Nhat Huy Nguyen

Ho Chi Minh City University of Technology (HCMUT) | HCMUT · Faculty of Environment and Natural Resources

Azo compounds, particularly azo dyes, are widely used but pose significant environmental risks due to their persistence and potential to form carcinogenic by-products. Advanced oxidation processes (AOPs) are effective in degrading these stubborn compounds, with Oxone activation being a particularly promising method. In this study, a unique nanohybr...

Bac Lieu, a region with diverse industries like handicrafts, agriculture, tourism, and a thriving marine economy, faces environmental challenges from climate change, resource exploitation, and rising air pollution due to vehicular, industrial, and agricultural emissions, along with waste management issues. The materials and methods employed in this...

PAN/Ag 2 S nanofibers prepared by combining conventional electrospinning technology and facile gas–solid reaction were used to activate peroxymonosulfate for Rhodamine B (RhB) degradation by photocatalysis using visible light. The material properties were analyzed by UV–Vis–NIR, XRD, SEM, FTIR, EIS, and BET techniques. The results indicated that Ag...

In this study, CoCr layered double hydroxide material (CoCr-LDH) was prepared and used as an effective catalyst for peroxymonosulfate (PMS) activation to degrade organics in water. The prepared CoCr-LDH material had a crystalline structure and relatively porous structure, as determined by various surface analyses. In Rhodamine B (RhB) removal, the...

Realizing the use of biogas as fuel or a gas engine, it is needed to upgrade to natural gas standards when it comes to pure biomethane, meaning impurities must be removed to a certain low concentration. Among these tasks, hydrogen sulfide (H2S) removal steadfastly gets the most attention. In the present work, partial catalytic oxidation was used to...

With the goal of finding low-cost materials that can completely substitute the precious- and noble-containing catalysts and be active toward the oxidation of CO at low temperatures (around 100 °C), transition metal oxide-doped cryptomelane (e.g., K-OMS-2, MeOx/K-OMS-2, and CuOx-MeOx/K-OMS-2; Me = Ni, Fe, Cd, Sn, Mn, Cr, Co, Zn, and Al) were obtaine...

This study focused on developing an adsorbent composite from rice husk and alum sludge to recover nutrients from wastewater, which could be used in the future for slow-release fertilizer production. A biochar-sludge composite (80B/20S) was created by modifying rice husk biochar with MgCl 2 and using acid-and heat-treated alum sludge to extract ammo...

The iron concentration in natural water of acid sulfate soils is usually determined by complicated methods of SMEWW 3111B:2017 or ISO 6332: 1988 E in the laboratory for acidified water samples at pH ∼2–3. Therefore, the rapid field determination of iron content in natural water is a very useful method because it limits the error and reduces the exp...

By using a simple co‐precipitation method, new Fe2O3‐based nanocatalysts (samples) were synthesized. The samples were composites of two or three transition metal oxides, MOx (M=Fe, Mn, Co, Ni, and Cu). The average size of CuO crystallites in the composites composed of two oxide components (CuO−Fe2O3) was about 14.3 nm, while in those composed of th...

In this study, we synthesized CuCoFe-LDH bilayer hydroxide catalysts in different Cu:Co:Fe ratios (1:1:1; 1:2:1, and 1:3:2) by hydrothermal method and applied them to activate PMS for decomposing levofloxacin. The obtained LDH samples were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and...

Even though transition metals can activate Oxone to degrade toxic contaminants, bimetallic materials possess higher catalytic activities because of synergistic effects, making them more attractive for Oxone activation. Herein, nanoscale CuCo-bearing N-doped carbon (CuCoNC) can be designed to afford a hollow structure as well as CuCo species by adop...

In this study, Fe 3 O 4 @TiO 2 was synthesized by a facile precipitation–impregnation method and applied as a magnetic photocatalyst for degrading synthetic and actual textile dyeing wastewater in the presence of peroxymonosulfate (PMS). In Rhodamine B (RhB) degradation, the removal efficiency reached 99.86% (for RhB) and 93.67% (for color) under o...

Ionic liquids (ILs) are increasingly adopted in various applications, leading to their release into the water environment, where they pose potential threats to ecology in view of toxicities. In order to remove 1-n-Butyl-3-Methylimidazolium (BMI) chloride, a well-known model IL, from water, urgent and crucial techniques are needed. Peroxydisulfate (...

This work reports the successful synthesis and application of α-Cu-FeOOH in heterogeneous Fenton treatment of actual textile dyeing wastewater. The material characteristics were analyzed by SEM, EDX, BET, FTIR, and XRD methods. In heterogeneous Fenton tests, the highest TOC and color removal efficiencies were found to be 46.88 and 37.98%, respectiv...

Ferrate is recently known as a green agent since it provides simultaneously oxidation, coagulation, and disinfection processes for water treatment without harm to the natural environment. However, its application in aquaculture wastewater treatment is still rarely found. In this study, chemical wet oxidation method was utilized to synthesize solid...

This study focused on the production, characterization, and application of biochar from coconuthusks as an effective and cheap adsorbent for the removal of heavy metals (i.e. Pb, Fe, Mn,and Cr) in water. The biochar was produced by pyrolysis of coconut husk at 600 °C in oxygen-free conditions and then characterized by various surface analysis techn...

Một số kim loại chuyển tiếp (như Fe và Mn, thường tồn tại trong bùn thải) có thể được tận dụng như vật liệu tiềm năng (chất hấp phụ hoặc chất xúc tác) để loại bỏ các chất ô nhiễm hữu cơ trong nước thông qua các quá trình oxy hóa nâng cao. Trong nghiên cứu này, bùn thải khô từ nhà máy cấp nước được cacbon hóa ở các nhiệt độ khác nhau (200, 300, 400,...

In this study, cellulose aerogel (CA) was synthesized from coir by the sol-gel method and applied for methylene blue (MB) removal in water. The CA materials have relatively low densities of 46.36–58.53 mg/cm3. In particular, the CA material with a coir content of 30 g/L composed of many porous fibers had the highest porosity of 96.97% and methylene...

In this study, the CuCoFe-LDH catalyst was synthesized by hydrothermal method and applied to degrade levofloxacin (LFX) by peroxymonosulfate (PMS) activation. The physicochemical properties of the synthesized samples were analyzed by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-...

In this study, specific generation of 1O2 was achieved by activation of peroxymonosulfate (PMS) using N-doped porous carbon with Fe nanoparticles (NPC-Fe), synthesized by carbonizing MIL-88B(Fe) metal-organic frameworks modified with ionic liquid. Fe(II) in the catalyst was found to react with PMS to form •O2-, and Pyridinic N promoted the conversi...

In this work, a green, novel, fast, and facile approach for synthesizing a SiO 2 /C nanocomposite series from rice husk (RH) through quenching and grinding techniques has been reported along with its application for the adsorptive removal of Reactive Red 120 (RR120) dye from an aqueous solution. The effect of carbonization temperature on the textur...

Designing defects-rich hollow heterostructure bimetal sulfides is considered as an efficient strategy for accelerated monopersulfate (MPS) activation. Herein, mono-step sulfidation was employed to develop sulfur vacancy (SV)-rich hollow oxygen-doped Co9S8/Fe7S8 (O-CSFS). SV and oxygen doping-induced highly electroactive sites, low charge resistance...

As sunscreens, benzophenones (BPs), are regarded as emerging contaminants, most of studies are focused on removal of 2-hydroxy-4-methoxybenzophenone (BP-3), which, however, has been employed for protecting skin. Another major class of BPs, which is used to prevent UV-induce degradation in various products, is completely neglected. Thus, this presen...

Wastewater containing an azo dye Orange G (OG) causes massive environmental pollution, thus it is critical to develop a highly effective, environmental-friendly, and reusable catalyst in peroxymonosulfate (PMS) activation for OG degradation. In this work, we successfully applied a magnetic MnFe2O4/α-MnO2 hybrid fabricated by a simple hydrothermal m...

Mechanism for the degradation of glyphosate herbicide in water by peroxymonosulfate activation using Co 3 O 4 /g-C 3 N 4 .

Designing high-performance TiO2-based photocatalysts with reduced bandgap is obligatory towards utilizing abundant sunlight. In this study, a novel hybrid was fabricated by interfacial polymerization of polyaniline (PANi) and polypyrrole (PPy)...

Nanotechnology is an emerging field that plays a vital role in the elimination of environmental pollutants. Nanomaterials have been applied for controlling and remediating contaminates (air, soil, and water) because of some of their advanced properties such as large specific surface area. Some nanomaterials based on transition metals can serve as o...

In emergency cases such as disasters, supplying enough safe drinking water is one of the most urgent needs for human life. This research aimed to develop a chemical- and electricity-free drinking water treatment system based on microfiltration and catalysts of Ag and Ag-TiO2-SiO2 coated on glass spheres in both dark and sunlight conditions. The sys...

Differences in the structural morphology of heterogeneous catalysts, oxygen vacancy (OV), and lattice defect degree could induce different catalytic performances due to the possession of different active sites and abundance of unpaired electrons. Despite this, few studies on in-depth discussion and detailed comparison of the influence of these fact...

In this work, Mn2O3 synthesized from Mn-MIL-100 was used as an efficient PMS activator for Rhodamine B (RhB) removal in water. The materials were characterized by XRD, FITR, SEM, EDX, and BET analyses. Results showed that the prepared Mn2O3 had better PMS activation efficiency than Mn2+, Mn3O4, MnO2, and commercial Mn2O3. In RhB removal, the highes...

In this study, RHA was activated by HF solution at room temperature, grafted with 3-[2-(2-aminoethylamino)ethylamino]propyl-trimethoxysilane to form an adsorbent (TRIARHA), and applied for adsorption of CO2 in the gas phase. Surface analyses such as XRD, FTIR, and SEM-mapping confirmed the successful synthesis of TRI-ARHA. For CO2 removal, adsorpti...

While a few [rad]OH-based oxidation technologies have been used for eliminating the highly toxic pesticide Carbofuran (CFR), very few studies have ever assessed SO4[rad]−-based oxidation technologies for degrading CFR. Even though monopersulfate (MPS) is increasingly used for producing SO4[rad]− and cobalt (Co) is the most useful element for activa...

A porous Fe 3 O 4 /bentonite nanocomposite (FBC) was successfully synthesized via an efficient and green co‐precipitation reaction under ultrasonic assistance. The FBC material was characterized by XRD, BET, FTIR and SEM and employed for removing methylene blue from the aqueous solution. The results showed that this nanocomposite owned a reasonably...

Clays (especially bentonite) are widely used as barriers in landfills to prevent contamination of subsoil and groundwater by leachate containing heavy metals or toxic organics. However, the future application of bentonite nanomaterials is still limited due to complicated and expensive preparation process requiring several steps, toxic chemical agen...

As the extensively-employed UV stabilizer, 2,4-dihydroxybenzophenone (benzophenone-1 (BP1)) has been proven an endocrine disruptor, developing of useful technologies for eliminating BP1 is highly desired. Because SO4•−-based oxidation technologies are promising for eliminating emerging pollutants, cobalt (Co) is an extremely useful catalyst for per...

This study aimed to treat river water for domestic water supply purposes in the South of Vietnam by photocatalysis. Since the pre-treatment of traditional coagulation was effective in removing turbidity and other pollutants, the photocatalytic step was mainly applied for the removal of organics and disinfection of pathogens. The titanium nanotubes...

In this study, the pure and calcined forms of Degussa TiO2 were applied for photocatalytic removal of doxycycline - a broad-spectrum tetracycline antibiotic. The calcination of TiO2 at 500 °C enhanced the photocatalytic efficiency of the TiO2 under optimal operational conditions of 5 ppm of doxycycline, 0.25 g/L of TiO2, pH 6.5, 120 min, and room t...

In this study, a hydrated iron-alum oxides-contained cation exchange resin (HIAO/225H) was synthesized for the first time from natural alum-ferric water of acid sulfate soil to improve the water quality. The HIAO/225H material was then characterized by FTIR, XRD, SEM, and EDX-mapping techniques and applied for phosphate and hardness removal tests....

A novel silver@silver chloride/carbon nanofiber (Ag@AgCl/CNF) hybrid was synthesized by electrospinning, heat treament, and subsequent in-situ chemical oxidation strategy. The synthesized materials were characterized using XRD, FTIR, UV-Vis DRS, SEM, and EDX. The experimental results reveal that the electrospun AgNO3/PAN was carbonized and reduced...

In this study, amine-functionalized rice husk ash (TRI-ARHA) was prepared and successfully applied as a multipurpose adsorbent for simultaneous removal of organics (i.e., methyl orange, MO), nitrate, and phosphate in wastewater with adsorption capacities of around 16.6 mgMO/g, 32.9 mgNO3 --N/g, and 13.4 mgPO4 3--P/g. These capacities were superior...

Background Valorization of biomass is a critical step towards sustainable utilization of renewable bio-resources. Among numerous bio-derivatives, vanillyl alcohol (VAA) appears as an attractive bio-derivative as VAA can be derived from lignin, and then transformed to vanillin (VNL), a versatile and high-value-added molecule. Nevertheless, the oxida...

Management of healthcare solid waste, especially hazardous medical waste, is an important and necessary action due to its potential risks to the environment and public health. In recent years, environmental protection and management agencies have made great efforts when combining waste collection, treatment, and management. In this study, the curre...

In this study, we prepared aluminum oxide/hydroxide on a cation exchange resin and applied it for removing Cadmium (Cd) in water. The characteristics of the synthesized materials were determined by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy. The Cd removal tests...

Nitrogen-containing phenolic contaminants (NCPCs) represent typical pollutants of industrial wastewaters. As catalytic reduction of NCPCs is a useful technique and Cu is an efficient metal catalyst, Cu-carboxylate frameworks (CuCF) are favorable materials. However, they are in powder form, making them difficult to use; thus, in this study, CuCF was...

This study conducted a field investigation in the behavior of visitors in the pagoda and burning incense as well as its air pollution situation in Vietnam, and revealed that 92% of people used stick form for offering incense and mainly burning either 1 or 3 sticks/time. Incense smoke exposure caused aroma, comfortable, eye irritation, or hard to br...

Background As 2-phenylbenzimidazole-5-sulfonic acid (PSA) is increasingly consumed as a sunscreen agent, release of PSA to water bodies has caused threats to aquatic ecology, such as endocrine disruption, and reproductive inhibition. While Oxone-derived sulfate radicals are useful for treating such emerging contaminants, and cobalt is the most capa...

Background Peroxymonosulfate (PMS) activation emerges as a very promising technology for the decomposition of recalcitrant in wastewater and it is necessary to understand the mechanisms of PMS activation and organic decomposition for the development of effective catalysts. Methods Fe3O4-CoCO3/rGO was synthesized through a one-step solvothermal met...

In this study, a facile low-temperature hydrothermal method was applied for the synthesis of bismuth subcarbonate nanoplates (Bi2O2CO3). The material was then characterized by FTIR, XRD, SEM, BET, and TGA. The applicability of Bi2O2CO3 was evaluated via the treatment of methyl blue (MB) in water by adsorption and photocatalytic degradation. The exp...

In this study, the background subtraction of cyclic voltammetry of a low oxidation peak at NiO based electrode is employed for the determination of glucose in human serum in 0.1 M NaOH medium with 2 linear ranges of 10 to 100 μM and 100 to 2000 μM with a detection limit of 2 μM and sensitivities of 2942.2 and 754.2 μAcm ⁻² mM ⁻¹ , respectively. As...

In this study, we aimed to synthesize ZnO nanomaterial and applied it for phosphate removal in aqueous solutions. ZnO material was prepared by a sonochemical route which is a simple and efficient method for large-scaled production of ZnO in nanosize. The surface characteristics and material structure of ZnO were determined via using electron scanni...

In this study, a potential adsorbent was synthesized from iron salt and cation exchange resin (FeOOH@CR) and applied for phosphate adsorption in batch experiments. The characteristics of FeOOH@CR materials before and after phosphate adsorption were determined by FTIR, XRD, and SEM. The factors affecting the adsorption process such as reaction time,...

This work reports a comprehensive study on the mechanisms for material formation, charge separation, persulfate activation, and photocatalytic degradation of fluoroquinolone antibiotics (e.g., ofloxacin (OFX), levofloxacin (LFX), and ciprofloxacin (CFX))...

Every year, thousands of tons of plant protection product (PPP) containers are indiscriminately discharged into the environment as toxic waste that has a negative impact on the land, water, and air environment as well as public health. This study surveyed the use of PPPs in rice cultivation, and the generation of hazardous waste (HW) when using pes...

This study investigates the ability of a self-fabricated bio-trickling filter using commercial polyurethane foam as bio-media for treatment of odor-causing gases (e.g., ammonia, hydrogen sulfide, and mercaptans) under different nitrogen loadings in gas and liquid phases. The experimental results showed that the biological filter operating with a ga...

A continuous-flow disinfection reactor combining gel-derived Ag–TiO2–SiO2 nanomaterial immobilized on glass beads and compound parabolic collectors was applied as an enhanced and efficient system for drinking water treatment under sunlight. The bactericidal tests were conducted from 10:00 am to 2:00 pm with an illuminance of natural sunlight from 1...

In this report, we successfully synthesized NiCoFe layered double oxide (NiCoFe-LDO) by heating a hydrothermally prepared NiCoFe layered double hydroxide in the air at 400-700 °C. The morphology, crystal structure, surface area, elemental composition and environment, functional groups, thermal stability, and magnetic properties of the materials wer...

In this study, the CuCoFe-layered double hydroxide was employed for the degradation of glyphosate in water via peroxymonosulfate (PMS) activation. Scanning electron microscopy, X-ray powder diffraction, energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, and Brunauer-Emmett-Teller analyses were used to characterize the ma...

While CeO2 is a promising catalyst for soot elimination, it is essential to develop CeO2 with higher contact areas, and reactivity for effective soot oxidation as catalytic soot oxidation is dominantly controlled by structures, and surficial properties of catalysts. In this study, a Ce-Metal organic frameworks (MOFs) consisting of Ce and trimesic a...

As CeO2 is a useful catalyst for soot elimination, it is important to develop CeO2 with higher contact areas, and reactivities for efficient soot oxidation and catalytic soot oxidation are basically controlled by structures and surface properties of catalysts. Herein, a Ce-Metal organic framework (MOFs) consisting of Ce and benzene-1,3,5-tricarboxy...

In this study, cobalt ferrite coated carbon felt (CoFe2O4/CF) was synthesized by solvothermal method and applied as cathode for electro-Fenton (EF) treatment of tartrazine (TTZ) in water. The materials were characterized by SEM, XRD, FTIR, CV, and EIS to explore their physical, chemical, and electrical properties. The effects of solvothermal temper...

In this study, we report a facile and effective approach for large-scale production of nitrogen-doped TiO2 nanocrystals (UNTs) by a combination of ultrasonic irradiation and electrochemistry at room temperature using NH4NO3 electrolyte as the nitrogen source. The as-prepared UNTs were then characterized by X-ray diffraction, Raman spectroscopy, X-r...

In this study, Mn2O3/MIL-100(Fe) composite was successfully synthesized by the hydrothermal method and applied for photocatalytic removal of rhodamine B (RhB) in water. The physical and chemical properties of the synthesized materials were characterized by XRD, FTIR, SEM, UV-visible, and BET analyses. Experimental results showed a great enhancement...

Photocatalysis is usually considered as one of the most effective methods for treating non-biodegradable pollutants commonly found in textile wastewater. In this study, the photocatalyst of g-C3N4/MIL-53(Fe) was synthesized by the hydrothermal method and applied for the removal of Rhodamine B (RhB) in water. The photocatalytic material was characte...

Waste Cooking Oil (WCO) can be a alternative for petroleum-based fuel. In this work, green biofuel was produced via cracking process of high acid value (AV) waste cooking oils (WCOs) over spent fluid catalytic cracking (SFCC) catalyst collected from Binh Son Refireny. The influences of temperature (450 – 520°C), catalyst-to-WCO ratio (1.5 – 3.5), a...

This work focuses on determining the effect of material synthesis conditions and studying on kinetic, isothermal and thermodynamic parameters of nitrate and phosphate adsorption by triamine-bearing porous silica (TRI-P- ) material. The innovation of this study is to improve the surface of through chemical corrosion reaction with hydrofluoric acid (...

Valorization of lignin derivative, vanillic alcohol (VL), to vanillic aldehyde (VE) represents a critical move towards sustainable utilizastion of lignocellulosic biomass. As conversion of VL into VE requires the specific oxidation of alcohol moiety of VL into an aldehyde moiety, it iscrucial to develop effective processes to selectively oxidize th...

In this study, we proposed and tested a green method for producing microcrystalline cellulose (MCC) with high quality from waste banana pseudo-stem (BPS) after fruit harvesting. The MCC was synthesized by treating BPS with sulfuric acid, sodium hydroxide, and H2O2 solution. The produced MCC material was then characterized by scanning electron micro...

This study reports for the first time on the synthesis of novel resin@P-Ag 2 O material and its application for reducing the chloride effect on COD determination of high salinity water. This engineered core–shell nanomaterial with cationic ion exchange resin core and porous Ag 2 O shell was prepared by facile ion exchange and silver oxidation metho...

As catalytic hydrogenation is validated as one of the most useful approach to reduce a potential carcinogenic bromate in water, the usage of continuous purge H2 gas and precious metal catalysts are typically required, making it less feasible for practical implementation. Since sodium borohydride (NaBH4) represents a potential alternative source for...

This work evaluates the ability to degrade Enrofloxacin (ENR) in synthetic high concentration wastewater by the photocatalytic method using pure TiO 2 nanomaterials. The material properties, including morphology, crystalline structure, UV-Vis absorption, and surface acidity-basicity, were also characterized. The treatment efficiency of 50 mgENR/L r...

Nước rỉ rác là nước thải từ bãi chôn lấp chứa các thành phần ô nhiễm ở nồng độ cao. Do đó, việc xử lý nước rỉ rác cần một hệ thống phức tạp bao gồm các quá trình hóa học, hóa lý, sinh học và xử lý nâng cao. Nồng độ cao của amoniac trong nước rỉ rác ngăn cản sự phát triển của các vi sinh vật trong xử lý sinh học nên cần loại bỏ amoni xuống nồng độ t...

The treatment of wastewater from the textile industry containing organic dyes faces many challenges since these compounds resist the biodegradation process in conventional treatment units. Among the physicochemical processes, photocatalysis is considered a facile, cheap, and environmental-friendly technology for treating persistent organic pollutan...

A novel iron-alum oxide nanomaterial was synthesized from naturally polluted water of acid sulfate soil by a hydrothermal method under microwave assistance. The characterizations (e.g., XRD, TEM, BET, FTIR, and XAS) and application of the novel iron-alum oxide nanomaterial with a flower-like morphology were also reported. For textile wastewater tre...

Indoor air pollution caused by combustion is a common problem in low-and middle-income countries which negatively affects human health. In Asian countries, burning incense in temples, pagodas, or residences is popular. This study consists of three contents (i) monitoring air quality parameters, including total volatile organic compounds (TVOCs), pa...

In this study, we synthesized and modified titanate nanotubes (TNTs) under different conditions of acid rinsing and calcination. The produced materials were then characterized by transmission electron microscopy, X-ray diffraction, ultraviolet-visible spectroscopy, temperature programmed desorption, inductively coupled plasma atomic emission spectr...

Resource recovery in wastewater treatment is the major challenge for achieving sustainable development. Further than only treatment, the recovery and reuse of nitrogen (N) and phosphorus (P) as a slow release fertilizer from actual swine wastewater (SW) was performed in this study. The development of a novel techique of converting soft sludge into...

Nowadays, antibiotics are used with increasing frequency to meet the needs of human life. The excretion of humans and animals in the livestock industry into the environment generates emerging pollutants with a potentially high risk for cancer, antibiotic resistance, and ecological imbalance. Among strategy for antibiotic removal, advanced oxidation...

The reverse osmosis (RO) water desalination system powered by the photovoltaic (PV) unit is commonly used to produce drinking water due to their reasonable price. This review focused to display different designs of small-scale PV powered brackish water RO (PV-BWRO) systems that were installed to improve the water productivity at remote areas. The c...

In natural water, colloidal particles play an important role in the transport of organic compounds, including pollutants. The analysis of colloidal particles creates more bases for the selection of river water treatment technology, making the treatment more efficient. In this study, the size and zeta potential of colloidal particles in Saigon river...

In this study, oxygenated graphene nanosheets (OGNs) was successfully synthesized by a simple electrochemical exfoliation approach and applied for removing methylene blue (MB) in aqueous solution. The surface morphology and structure of the OGNs were characterized by scanning electron microscopy, transmission electron microscopy, Raman, and X-ray p...

In this work, we introduced a model of glucose reaction at the electrode and determined the reduction potential of CuOOH/CuO redox couple at CuO nanowires/ITO electrode (CNIE) via an empirical study. The cyclic voltage scanning of CNIE to glucose in different concentrations of NaOH electrolyte solution was conducted using the background subtraction...

In this study, eggshell powder-chitosan gel (EPCG) material was synthesized and tested as an adsorbent for two commercial reactive dyes in batch and dynamic modes. The EPCG material was a novel core-shell material in which the eggshell core particles were coated by a thin layer of chitosan. SEM images of dried EPCG powder showed a porous structure...