Vijay Devra

Janki Devi Bajaj Govt. Girls College, Kota · chemistry

The release of organic pollutants and dyes into the environment by industries has had profound and harmful effects on both humans and ecosystems. Graphene oxide (GO) and its reduced form have been investigated for their effectiveness in removing pollutant dyes. GO nano-powder was synthesized using an improved version of Hummer’s method and subseque...

The key issues preventing the agricultural and food sectors from remaining sustainable include the growing global population, depleting land, and rising production costs. Natural resources can be used more effectively based on the use of nanobiosensors. To address the enormous need for foods and agricultural items for a constantly growing populatio...

Nanotechnology is a rapidly emerging scientific topic that has attracted a lot of interest in recent years due to its numerous applications. Nanotechnology is a method for using and manipulating materials at very small scales, typically between one and one hundred nanometers. As compared to the same materials at greater scales, the materials at thi...

Chemical, Material Sciences & Nano technology book series aims to bring together leading academic scientists, researchers and research scholars to exchange and share their experiences and research results on all aspects of Chemical, Material Sciences & Nano technology. The field of advanced and applied Chemical, Material Sciences & Nano technology...

Green chemistry and nanobiotechnology have great potential for generating new and significant products that are favorable to the environment, industry, and consumers. The nanoforms of metals and nanocomposites are more effective and efficient agents than their bulkier counterparts because of their distinctive physical, chemical, and optical propert...

The development of environmentally friendly material synthesis processes is important for expanding their biological applications. Currently, a variety of microbes have been utilized to fabricate metal sulfide nanoparticles (MSNPs). The uses of materials with well-defined chemical composition, size, and shape in several cutting-edge technological f...

Enternational Journals ofrupute in the atta of chemistiy ot Phato catalync Fhoto degradation and Ewirounenta Rajasthan ln his acaudetmic career specading ver about 20 war, be has spetjel any h alars, wrn pastgraduaze Organic, Phyical and laganuc (heustry, 1He is pertise n p e t t o y photheudr organuenetallk cot rata e altvaf snee ence, Govind iuru...

The eco-friendly synthesis of nanomaterials is currently playing an important role in environmental protection. Green nanoparticles (NPs) synthesis minimizes waste and makes the process sustainable. Green Fusion uses environmentally friendly reagents as reducing agents and sealing agents to reduce the risk of releasing toxic residues into the envir...

The use of viable cells in the green production of nanoparticles (NPs) is a promising and unique method in nanotechnology. The purpose of this work is to provide a comprehensive dissection on the use of various extracts of plant parts in the synthesis of bimetallic nanoparticles (BMNPs). In comparison to the physical and chemical methods, green nan...

Rice waste is one of the agricultural wastes that increased every year. Consequently, rice waste is ideal renewable resources for the production of nanomaterials as a substitute for harmful chemicals. Thus, a researcher in the major rice-producing areas developed eco-friendly sustainable perspective to replace the common practices for rice waste Ma...

Green technology is a rapidly growing scientific field, which, due to its plentiful applications, has drawn great interest over the last few years. It is a multidisciplinary field that, in contrast to chemical and physical methods used for the synthesis of nanoparticles, is safe, non-hazardous and environmentally friendly. Differences in the biomat...

In recent years, the biogenic synthesis of metal nanoparticles (MNPs) by using microorganisms and other biomolecule compounds in either an intracellular or extracellular route. Biogenic MNP synthesis, an alternative to pHysical and chemical properties, is safer, eco-friendly, non-toxic, and biocompatible. The plenty of vital enzymes and proteins as...

In nanotechnology, developing an environmentally friendly method for synthesizing iron nanoparticles (FeNPs) is an important aspect. According to recent studies, the use of secondary metabolites from plant leaf extract has recently emerged as a novel technology for synthesizing various nanoparticles. The leaf extract of Azadirachta indica was used...

Green chemistry has proven to be an effective way to synthesize metal nanoparticles. Nanoparticles are very important for the development of sustainable technology for the future, for humans and the environment. The synthesis of nanoparticles from plants is a green chemical approach that combines nanotechnology and plant biotechnology. The plant ex...

Nanotechnology is an interdisciplinary field that encompasses various disciplines of engineering, biology, physics and chemistry, which deals with nanoscale materials. It is a multiple areas field which covers diverse domains from the synthesis of nanoparticles (NPs) from plants is a green chemical approach that combines nanotechnology and plant bi...

The goal of the research was to devise a simple and environment-friendly approach to synthesize iron nanoparticles (FeNPs) and evaluate the catalytic activity of biosynthesized FeNPs for the degradation of the cationic dye Malachite Green (MG) in the presence of Peroxomonosulphate (PMS). Different instrumental approaches were used to characterize g...

SARS-CoV-2 and the sickness it produces, COVID-19 sparked a global epidemic in just a few months. To create effective treatment options, virologists, biologists, pharmacists, materials scientists, and physicians are working together. This virus is to blame for the ongoing epidemic that causes severe respiratory issues and pneumonia because of human...

Iron nanoparticles are recently gaining great interest in environmental remediation circles. Iron nanoparticles (FeNPs) were synthesized by extract of Azadirachta Indica (Neem) leaves. The synthesized particles were characterized by U.V. Visible spectrophotometric and Fourier transforms infrared spectrophotometric technique. The results indicates t...

Heterogeneous acid catalysts are active in a wide range of applications. In this review, an overview is given of the current knowledge available about the fly ash supported solid acid catalysts and their catalytic activity in various organic transformations. Atom effective, cost effective recyclable and environmentally benign like attributes makes...

Today, water is one of the major issues confronting humanity and we are facing crises as regarding the quantity and quality of water supply. The escalation in the global population and the quest for continued development is leading to conflicting pressure on water resources. Such resources are the ultimate recipient of pollution from various socioe...

Highly stable dispersion of nanosized copper particles was prepared by chemical reduction method. Chemical reduction of copper salts by L-ascorbic acid is a new and green approach in which L-ascorbic acid is used as reducing and capping agent in aqueous medium. This approach is the most effective and is also economical. The effects of reactant conc...

Pharmaceuticals, especially fluoroquinolone antibiotics, have received increasing global concern, since they have been recognize as emerging environmental pollutants. Degradation of antibiotics, such as oxidative degradation by metal oxides, often plays an important role in the elimination of antibiotics from the environment. The kinetics of oxidat...

The Cu(II) catalyzed oxidation of levofloxacin by hexacyanoferrate(III) has been investigated spectrophotometrically in an aqueous alkaline medium at 25˚C. The stoichiometry for the reaction indicates that, the oxidation of one mole of levofloxacin requires two moles of hexacyanoferrate(III). The reaction exhibited first order kinetics with respect...

The kinetic and mechanistic investigation of oxidation of levofloxacin (LF) has been studied by permanganate ion in aqueous sulphuric acid medium at 25°C. The reaction followed first-order kinetics with respect to [LF], and [H+] in their lower concentrations range, tending to zero-order at their higher concentrations. The effect of added products a...

The study was primarily focused on novel, simple and environmentally benign technique for the synthesis of copper nanoparticles (CuNPs) and find out catalytic activity in CuNPs/ Peroxomonosulfate (PMS) system for degradation of Methyl Orange (MO). Green synthesized CuNPs were characterized by different instrumental techniques and results indicate s...

Present study describes the fabrication of CuNPs (copper nanoparticles ascorbic acid) use as a reducing as well as capping agent. Size of CuNPs was depending on the various concentration of L AA. The synthesized CuNPs have resistance to oxidation by atmospheric oxygen for two months. were studied by spectrophotometric techniques. The average sizes...

In this paper, we report on the synthesis of copper nanoparticles (Cunps) through a single route of chemical reduction method. The effect of different concentration of reducing agent on the morphology of Copper nanoparticles was investigated. The synthesized copper nanoparticles were characterized by UV-Visible spectrophotometer, Fourier Transform...

The osmium(VIII) catalysed reaction between L-valine and hexacyanoferrate (III) [HCF(III)] in alkaline medium has a stoichiometry of 1: 2 with zero order dependence on [HCF(III)]. The reaction is first order with respect to [catalyst] and [alkali] and fractional with [substrate]. No effect of added product was observed. A mechanism involving the fo...

In the field of nanotechnology, developing an environmentally friendly method for the synthesis of iron nanoparticles (FeNPs) an important aspect. The use of secondary metabolites from plant leaf extract has recently emerged as a novel technology for the synthesis of various nanoparticles, according to recent studies. The leaf extract of Azadiracht...

Today, water is one of the major issues confronting humanity and we are facing crises as regarding the quantity and quality of water supply. The escalation in the global population and the quest for continued development is leading to conflicting pressure on water resources. Such resources are the ultimate recipient of pollution from various socioe...

Soluble colloidal manganese dioxide was formed by reduction of potassium permanganate with sodium thiosulphate in neutral aqueous medium at 25 ºC. The obtained nano-sized colloidal manganese dioxide was found to be dark reddish-brown in color and stable for several months. The formation of manganese dioxide was confirmed by UV-visible spectrophotom...

The present study reports stable dispersed nano-sized iron nanoparticles (FeNPs) were prepared by the biosynthesis process without any protecting gas. The biomolecules present in leaf extract act as reducing and stabilizing agent in an aqueous medium. The formation of FeNPs was characterized by UV visible spectrophotometric and Fourier transform in...

Pharmaceuticals, especially antibiotics, have received increasing global concern, due to their intensive use in the environment and potential harm to ecological system as well as human health. Among various antibiotics, fluoroquinolones are of extreme interest, since they are broad-spectrum antibacterials with agrowing demand in hospitals, househol...

The present study reports the green synthesis of Silver nanoparticles (AgNPs) using Azadirachta indica (neem) leaf broth as reducing and capping agent in aqueous solution. The effect of different temperature on the morphology of dispersed AgNPs was studied. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) analysis resul...

B. Sc part III Physical Chemistry

The presence and accumulation of antibacterial drugs in environment, may pose threats to the ecosystem and human health. Hence, oxidation process is of significant to minimize possibility of health risk. The present study aimed to uncatalyzed and Cu(II) catalyzed oxidative degradation of antibacterial drug ofloxacin by hexacyanoferrate(III) in aque...

The present study includes the Azadirachta indica (neem) induced Silver nanoparticles (AgNPs) by green synthesis as reducing and capping agent. Synthesized AgNPs were characterized by different instrumental techniques such as XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy), TEM (Transmission Electron Microscopy), Zetasizer, UV-Visible a...

The main objective of this work was to prepare anti-pollutant and photocatalyst. Titanium dioxide nanoparti-cles by simple ethylene glycol route to synthesize titanium dioxide nanoparticles at industrial level. In this work TiO2 was prepared by sol-gel route in presence of titanium n-butoxide (TNBT) as TiO2 precursor, n-butanol as dilutant and EG a...

Text Book for B. Sc part III ( Physical chemistry)

Development of an eco-friendly process for the synthesis of copper nanoparticles (CuNPs) is an important aspect in the field of nanotechnology. In recent years the utilization of secondary metabolites from plant leaf broth has emerged as a novel technology for the synthesis of various nanoparticles. In this report, copper nanoparticles were synthes...

The present study reports the highly stable dispersednanosized copper particles (CuNPs) was prepared by the biosynthesis process. The reduction of copper salts by Azadirachta indica (neem) leaf broth is a new and green approach, in which biomolecules present in leaf broth is act as reducing and stabilizing agent in aqueous medium. The effect of rea...

The Kinetic and mechanism of oxidation of ofloxacin by permanganate ion in acidic medium have been studied at 30±1ºC.The Stoichiometry has been observed to be 2:5 in terms of mole ratio of permanganate ion and ofloxacin consumed. The reaction shows first order with respect to oxidant and fractional order in both the substrate and hydrogen ion conce...

The study was primarily focused on novel, simple and environmentally benign technique for the synthesis of copper nanoparticles (CuNPs) and comparing the catalytic activity in CuNPs/Peroxodisulfate (PDS) and CuNPs/ Peroxomonosulfate (PMS) process for degradation of Methyl Orange (MO). Green synthesized CuNPs were characterized by different instrume...

The study was primarily focused on novel, simple and environmentally benign technique for the synthesis of copper nanoparticles (CuNPs) and comparing the catalytic activity in CuNPs/Peroxodisulfate (PDS) and CuNPs/Peroxomonosulfate (PMS) process for degradation of Methyl Orange (MO). Green synthesized CuNPs were characterized by different instrumen...

B.Sc. part III Text Book ( Physical Chemistry

Pharmaceuticals, especially fluoroquinolone antibiotics, have received increasing global concern, due to their intensive use in the environment and potential harm to ecological system as well as human health. Degradation of antibiotics, such as oxidative degradation by metal oxides, often plays an important role in the elimination of antibiotics fr...

The Cu(II)-catalyzed oxidation of ciprofloxacin (CIP) by hexacyanoferrate(III) (HCF) has been investigated spectrophotometrically in an aqueous alkaline medium at 40°C. The stoichiometry for the reaction indicates that the oxidation of 1 mol of CIP requires 2 mol of HCF. The reaction exhibited first-order kinetics with respect to [HCF] and less tha...

The Cu(II) catalyzed oxidation of levofloxacin by hexacyanoferrate(III) has been investigated spectrophotometrically in an aqueous alkaline medium at 25˚C. The stoichiometry for the reaction indicates that, the oxidation of one mole of levofloxacin requires two moles of hexacyanoferrate(III). The reaction exhibited first order kinetics with respect...

The kinetics and mid (NA) by permanganate ion in alkaline medium have been studied at 40 ± 1°C. The Stoichiometry was observed to be 2:1 in terms of mole ratio of permanganate ion and nalidixic acid consumed. The reaction shows first order with respect to oxidant and fractional order in both the substrate and alkali concentration. The oxidation rea...

The development of competent green chemistry methods for synthesis of metal nanoparticles has become a main focus of researchers. In this study we report the green synthesis of silver nanoparticles (AgNps) by reduction of silver nitrate, using leaf broth of Azadirakta indica (Neem). The plant leaf broth simultaneously acts as reducing agent as well...

The development of competent green chemistry methods for synthesis of metal nanoparticles has become a main focus of researchers. In this study we report the green synthesis of silver nanoparticles (AgNps) by reduction of silver nitrate, using leaf broth of Azadirakta indica (Neem). The plant leaf broth simultaneously acts as reducing agent as well...

The undertaken study describes the synthesis of copper nanoparticles (Cunps) in an aqueous medium using ascorbic acid as a reducing agent via the chemical reduction method. The synthesized copper nanoparticles have resistance to oxidation by atmospheric oxygen for two months. The copper nanoparticles were characterized by UV–Visible spectrophotomet...

The synthesis and catalytic properties of copper nanoparticles (Cunps) were reported using L-ascorbic acid as reducing and capping agent in aqueous medium. The effect of different concentrations of L-ascorbic acid on the particle size of Cunps was investigated. The synthesized Cunps were characterized by UV-Visible spectrophotometer, scanning elect...

The kinetics of oxidation of lysine with chromium (VI) has been studied in perchloric acid medium. The oxidation product was identified as chromium (III) and 5-aminopentanaldehyde. The reaction is first order with respect to chromium (VI) and less than unit order in lysine concentration. Increase in acid concentration accelerates the reaction rate....

Kinetics of manganese(II) catalysed oxidation of serine by cerium(IV) has been studied in Sulphuric acid medium at 45 • C. The reaction follows first order kinetics with respect to [Mn(II)] while negative effect was observed for the variation of [H + ] on the rate of reaction. The reaction exhibits first order kinetics with respect to serine at its...

The oxidation of ciprofloxacin (CIP) by permanganate ion in aqueous sulphuric acid medium at constant ionic strength (I = 0.05 mol dm-3) has been investigated spectrophotometrically at 525 nm. Order with respect to substrate, oxidant and acid concentrations were determined. Product characterization of reaction mixture indicates the formation of maj...

The kinetics of Mn (II) catalyzed oxidation of alanine with Cerium (IV) has been studied in Sulphuric acid medium at 40 o C. The reaction is first order with respect to Ce (IV) and Mn (II) and positive fractional order with respect to alanine. The rate of reaction increases with increasing H + concentration and decreases with the increase of [HSO 4...

The reaction of valine with ceric ion has been kinetically studied in aqueous sulphuric acid medium in the presence of palladium(II) as catalyst using a spectrophotometric method at 45 • C temperature. The reaction was studied under pseudo first order conditions with respect to cerium(IV). The results exhibits first order each in cerium(IV) and pal...

Synthesis of a highly active solid oxidative catalyst has been reported by loading of vanadium on mechanically activated fly ash through wet impregnation method. The catalytic activity of prepared catalyst was measured by gas phase, solvent free selective oxidation of toluene using molecular oxygen as oxidant in a vapor phase micro-reactor under no...

A simple method based on alkaline extraction followed by acid precipitation and acid dissolution has been developed to produce pure amorphous silica from perlite. The reaction parameters such as molar ratio of NaOH/SiO 2 , reaction time and reaction temperature are varied for obtaining maximum silica conversion. About 70.6 % pure precipitated silic...

The main objective of this work was to prepare anti-pollutant and photocatalyst. Titanium dioxide nanoparti-cles by simple ethylene glycol route to synthesize titanium dioxide nanoparticles at industrial level. In this work TiO2 was prepared by sol-gel route in presence of titanium n-butoxide (TNBT) as TiO2 precursor, n-butanol as dilutant and EG a...

The main aim of this research was to prepare nanoparticles of nickel oxide through a new mixed reverse microemulsion route. Quaternary microemulsion (water/surfactant/co-surfactant/oil-phase) was used to synthesize nickel oxide nanoparticles. The microemulsion was prepared by Tween-80, Aerosol-OT, n-Propanol, Cyclohexane, and Nickel Chloride. Previ...

This paper is a critical overview on chemical, structural, and morphological changes in fly ash properties with mechanical activation using high energy planetary ball mill and chemical activation by digesting with various mineral acids (HCl, HNO3, H2SO4 and HClO4) at 110oC. Mechanical activation results in increase in silica percentage, amorphous n...

The kinetics of the silver(I)-catalysed oxidation of valine with cerium(IV) has been studied in perchloric acid medium. An usual decrease in rate with increasing concentration of cerium(IV) is observed and the detailed quantitative analysis of this behaviour is presented on the basis of dimerisation of cerium(IV). The reaction exhibits fractional d...

The kinetics of oxidation of amino acids viz. glycine, alanine, and threonine with bismuth(V) in HClO4–HF medium have been studied. The kinetics of the oxidation of all these amino acids exhibit similar rate laws. The second-order rate constants were calculated to be 2.04 × 10−2 dm3 mol−1 and 2.72 × 10−2 dm3 mol−1 s−1 for glycine and alanine, respe...

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Kinetics of oxidation of alanine by osmium(VIII) was studied in alkaline medium at 25°C. The reaction was found to have first order dependence each in [OsVIII] and [alanine] and second order in [OH-], which changed to zero order at higher concentration of [OH-]. The main product of the oxidation is the corresponding aldehyde. Temperature variation...

The kinetics of the uncatalyzed and silver(I) catalyzed oxidation of lysine with cerium(IV) has been studied in perchloric acid medium. The reaction is second order, that is first order with respect to each reactant. The mode of electron transfer has been indicated through an adduct between Ag1 and lysine via oxygen atom of the carboxyl group rathe...

The present paper describes the kinetics and mechanism of oxidation of threonine by chromium (VI) in aqueous perchloric acid medium at 45°C. The reaction is first order with respect to oxidant, substrate and acid concentration. The effect of chloride ion and ionic strength were found to be negligible. The dependence of rate on temperature has been...

This study investigated the chemical modifications of coal fly ash treated with concentrated HClO 4. A solid acid catalyst PAFA was synthesized by the chemical treatment which was prepared from Perchloric acid activation. The physico-chemical modifications of PAFA catalyst was investigated by employing various analytical techniques such as XRF, XRD...

The kinetics of the silver(I) catalyzed oxidation of alanine with cerium(IV) has been studied in perchloric acid medium. An usual decrease in rate with increasing concentration of cerium(IV) is observed and the detailed quantitative analysis of this behaviour is presented on the basis of dimerization of cerium(IV). The reaction exhibits fractional...

The solution of bismuth(V) was prepared by digesting sodium bismuthate in aqueous phosphoric acid (3.0 mol dm−3), the resulting pink colour solution absorbs in the visible region at 530 nm (640 dm3 mol−1 cm−1). The stoichiometry of the oxidation of formic acid by bismuth(V) corresponds to the reaction as represented by the Eq. (1). (1)The observed...

Silver(I) catalyzed oxidation of aspartic acid by cerium(IV) was studied in acid perchlorate medium. The stoichiometry of the reaction is represented by the eq. (i) Dimeric cerium(IV) species has been indicated and employed in calculations of monomeric cerium(IV) species concentrations. The reaction is second-order and uncatalyzed reaction also si...