Muthusamy Kandasamy

National Energy University

Increasing prerequisites for sustainable energy storage and conversion technologies have necessitated the exploration of advanced materials with improved properties. Here, we present the synthesis and characterization of ZnO nanoparticles (NPs), ZnO/NiO, ZnO/Co 3 O 4 and ZnO/NiO/Co 3 O 4 NCs as promising bi-functional materials for dye-sensitized s...

A facile and green route was followed to synthesize copper oxide (CuO) nanostructures using Vitex negundo and Euphorbia milii leaf extracts. Structural, elemental, chemical, spectral and morphological features of the CuO nanostructures were determined by XRD, EDS, FTIR spectroscopy, UV–Vis spectrophotometer and FESEM, respectively. The CuO nanostru...

Dye-sensitized solar cells (DSSCs) were constructed using photoanodes of TiO2 nanoparticles (Degussa P25) calcinated at diverse temperatures. The calcinated TiO2 nanoparticles were characterized by X-ray diffraction (XRD) technique and N719 dye anchored TiO2 thin films were subjected to diffuse reflectance spectral and dye desorption studies. The b...

Light-induced photocatalytic degradation of ceftiofur sodium (CFS) has been assessed in the presence of plasmonic zinc oxide nanostructures (ZnONSTs), like, ZnO nanoparticles, ZnO nanorods (ZnONRs) and ZnO nanoflowers (ZnONFs). Silver nanoparticles (Ag NPs) loaded ZnO nanostructures (Ag-ZnONSTs) are obtained through seed-assisted chemical reaction...

Commercial solar selective absorbers prepared through several techniques have encountered drawbacks of necessitating complicated and expensive equipment, substantial materials requirement, and polluting environment. In this context, carbon incorporated metal oxide thin films have shown promise of low-cost, non-toxic, and efficient solar selective a...

The current generation of solar cells are playing a predominant role in the energy storage industries since they are found to be economic, abundant, and compact design for photovoltaic applications. In this context, composite materials based on perovskite zinc titanate nanoparticles (ZnTiO3 NPs) and perovskite zinc titanate-reduced graphene oxide n...

A simple biosynthesis process was followed for preparing zinc oxide nanorods (ZnO NRs) using Aerva lanata leaf extract as reducing and structure directing agents. The FE-SEM images displayed presence of ZnO NRs a mean diameter of ∼100 nm. The EDX spectrum ascertained purity of the ZnO NRs. The UV-Vis spectrum exhibited characteristic absorption ban...

A facile biosynthesis route was followed to prepare zinc oxide nanoparticles (ZnO NPs) using Euphorbia milii (E. milii) leaf constituents. The SEM images exhibited presence of spherical ZnO NPs and the corresponding TEM images disclosed that monodisperse nature of the ZnO NPs with diameter ranges between 12 and 20 nm. The Brunauer–Emmett–Teller (BE...

Background In dye-sensitized solar cell (DSSC), the semiconductor photoanode plays a vital role in gathering photo-excited electrons from the sensitizer. Generally, the photoconversion efficiency of photoanode is hampered by electron-hole recombination. To circumvent this, modification of TiO2 nanotubes with amine functionalized graphene oxide (GO)...

Proficient photoanode is always vital for obtaining high efficiency in dye-sensitized solar cell (DSSC). Herein, ethylenediamine functionalized TiO2 nanowires graphene oxide (TiO2 NW-NH2/GO) has been synthesized and incorporated with Ag nanoparticles. The prepared plasmonic nanocomposites are characterized by various techniques, such as, diffused r...

Amine-functionalized ZnO [email protected] oxide (ZnO-NR/NH2/GO) nanocomposites prepared by a facile solution route have been investigated through X-ray diffraction, diffuse reflectance spectra, Raman spectra, scanning electron microscopy and transmission electron microscopy. The amine-functionalized ZnO-NR/NH2/GO-2 nanocomposite exhibits very stro...

Zinc oxide nanoparticles (ZnO NPs) are obtained through biological method using phytochemicals present in leaf extract of Ficus carica (F. carica) tree. The scanning electron microscope images have indicated formation of small spherical ZnO NPs in the form of clusters whose diameter ranges between 30 and 40 nm having mean diameter of 35 nm. The ene...

Plasmonic silver nanoparticles loaded strontium titanate nanocomposites (Ag-SrTiO3 NC) with diverse weight percentages (0.5, 1.5, 2.5 and 5 wt%) of Ag nanoparticles (Ag NPs) are synthesized by a facile chemical reduction method. The prepared nanocomposites are characterized using diffuse reflectance spectroscopy, X-ray diffractometry, photoluminesc...

Copper oxide (CuO) nanostructures were synthesized through a simple and low-cost wet chemical synthesis method using copper nitrate trihydrate as precursor and sodium hydroxide (NaOH) as stabilizing agent. Scanning electron microscopy analysis revealed formation of diverse CuO nanostructures as a consequence of varying the concentration of NaOH in...

Monodispersed silver quantum dots (Ag QDs) of sub 5 nm range are prepared through a facile and size-controllable green synthesis route using sweet lime (Citrus limetta) peel (SLP) extract. Powder X-ray diffraction studies confirm the formation of face-centered-cubic structured Ag QDs which is corroborated by selected area electron diffraction. The...

Hierarchical copper oxide (CuO) microspheres were prepared by Moringa oleifera (M. oleifera) leaf extract assisted green synthesis method. The structural, chemical, and morphology features of the hierarchical CuO microspheres were inspected by XRD, FTIR, SEM and EDAX techniques. The XRD pattern unveiled the formation of monoclinic crystal structure...

A facile, fluorine-free and non-toxic one-pot solvothermal technique was adopted to synthesis TiO2 nanoflowers with anatase phase having 98% highly exposed {0 0 1} facets (TiO2 {0 0 1} NFs). The morphology, grain size and crystallinity of pure TiO2 {0 0 1} NFs and reduced graphene oxide (RGO) sheets modified TiO2 {0 0 1} NFs (RGO-TiO2 {0 0 1} NFs)...

Zinc oxide-cobalt oxide nanocomposites (ZnO–Co3O4 NCs) with diverse concentrations (0.03, 0.06, 0.09 and 0.12 M) of Co²⁺ ions were synthesized by a simple chemical co-precipitation method. The effect of Co²⁺ ions concentration on the optical, structural, morphological and chemical properties of the ZnO–Co3O4 NCs was investigated by UV-Vis spectroph...

Reduced graphene oxide wrapped copper oxide (rGO-CuO) thin films were prepared by room temperature chemical oxidation of copper substrates and subsequent dip-coating technique. Structural, morphological and chemical analysis of the as-prepared thin films were performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersiv...

Green synthesis of hierarchical copper oxide (CuO) microleaf bundles was performed using Hibiscus cannabinus (H. cannabinus) leaf extract and characterized through X-ray diffractometry (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDAX), transmission electron microscopy (TEM) and Fourier transform infrared (FTIR)...

Copper oxide (CuO) nanostructures were synthesized using Cynodon dactylon and Cyperus rotundus grass extracts. XRD analysis revealed formation of end-centered monoclinic structured CuO with high crystallinity. SEM images of CuO nanostructure prepared by C. dactylon grass extract disclosed rice spikelet-like morphology, while CuO nanostructure synth...

p class="abstract"> Background: Metabolic syndrome (MS) is a constellation of risk factors like central obesity, atherogenic dyslipidemia, hypertension and glucose intolerance.Psoriasis is associated with MS and this may be contributed by various inflammatory mediators like interleukin 6 and tumor necrosis factor α which are increased in psoriasis....

The sensitization of ZnO nanoparticles thin film with a natural substance curcumin and its use as photoanode in a solid-state dye-sensitized solar cell (SS-DSSC) employing TiO2 nanofiller modified polyethylene oxide (PEO) polymer electrolyte is reported. The diffuse reflectance spectrum (DRS) of the curcumin dye adsorbed ZnO thin film has exhibited...