Experimental investigation on plant extract-induced biosynthesis of Nickel nanoparticles Nimish Kumar, Anjali Singh, Vijay Devra Next Nanotechnology, 2025 Here, we describe the phytosynthesis of nickel nanoparticles (NiNPs) utilizing an extract from the leaves of Azadirachta indica as a reducing and capping agent. The optimal conditions for synthesizing stable NiNPs were pH 6.8, temperature 70°C, and 5 % leaf extract and [NiNO 3 .6H 2 O] = 1.0×10 −3 mol dm −3 . The X-ray diffraction (XRD) analysis revealed a face-centered cubic crystalline structure, and the Transmission Electron Microscope (TEM) and Scanning Electron Microscope (SEM) analyses verified a triangular form with particles ranging in size from 7 to 18 nm. The study examined the impact of reactant concentrations, reaction temperature, and solution pH on the nickel nanoparticle fabrication method. The following are the ideal parameters for synthesis: 5 % leaf extract, pH = 6.8, temperature = 70 °C, and [NiNO 3 .6H 2 O] = 1.0×10 −3 mol dm −3 . Plant biomolecules induce the reduction of nickel ions to NiNPs and function as a capping and stabilizing agent, as confirmed by the FTIR technique. The findings indicated that the synthesis of NiNPs from A. indica leaf extracts are safe technology and may have significant impacts on the industrial synthesis of metallic nanoparticles .
Metal-free adsorption and photodegradation methods for methylene blue dye removal using different reduction grades of graphene oxide Sanju Mahich, Yogesh Kumar Saini, Vijay Devra, Kanika Aggarwal, Anuj Kumar, Dinesh Kumar, Amanpal Singh, Yogendra Arya Heliyon, 2024 /g and a corresponding enhancement in pore volume from 0.118 to 0.128 cc/g after reduction. The adsorption and photocatalytic degradation behavior of pristine GO and reduced graphene oxides (rGOs) were examined using methylene blue dye. The pristine GO demonstrated impressive adsorption capability, effectively removing the dye by 85.78 % within just 15 min and achieving nearly 97 % removal after 4 h. In contrast, the highest photocatalytic degradation of methylene blue, about 47.58 %, was attained for the rGO sample reduced at 150 °C under the illumination of visible light.
Nano-Biofertilizers Synthesis and Applications in Agroecosystems Preeti Bairwa, Nimish Kumar, Vijay Devra, Kamel Abd-Elsalam Agrochemicals, 2023 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 properties. Green technology is a rapidly growing scientific field that has recently received attention due to its many applications. Different nanoparticle dimensions, sizes, and bioactivities will develop as a consequence of changes in the biomaterials employed for synthesis. The existing understanding of several green synthesis methods, that depend on different plant components and microorganisms for the production of nanoparticles, is summarized in the current review. Employing these materials minimizes synthesis costs while minimizing the use of hazardous chemicals and promoting “biosynthesis.” To produce metal nanoparticles efficiently, bio-reduction is influenced by the abundance of essential enzymes, proteins, and biomolecules. Rapid biosynthetic regeneration makes this characteristic sufficient for their employment in a range of situations. In this review, we explore the biosynthesis of nanomaterials and their potential in sustainable agriculture. Biosynthesized nanofertilizers, or bionanofertilizers, are a revolutionary new class of fertilizer that has been developed with the help of nanotechnology. These fertilizers offer many advantages over traditional fertilization methods and can be used to increase crop yields while reducing the environmental impact of fertilizers. Bionanofertilizer are an inexpensive way to increase plant growth and production, and to improve the use of nutrients by plants and the health of the soil. According to our survey, nanotechnology presents a wide range of prospects by offering a cutting-edge and environmentally friendly alternative in the agricultural sector.
Experimental Investigation on Green Synthesis of Bimetallic Nanoparticles by Using Plant Extract: A Review Preeti Bairwa, Vijay Devra, R Tomar, P Chauhan, V Shrivastava, et al. Nanoworld Journal, 2022 Preeti Bairwa and Vijay Devra 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).
Kinetics and mechanism of silver(I) catalyzed oxidation of valine by cerium(IV) in acid perchlorate medium Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2010
Mechanistic aspects of oxidation of alanine by OsVIII in aqueous alkaline medium. A kinetic model Journal of the Indian Chemical Society, 2010
Kinetics and mechanism of uncatalyzed and silver(I) catalyzed oxidation of lysine by cerium(IV) in acid perchlorate medium Journal of the Indian Chemical Society, 2009
Kinetics and mechanism of silver(I) catalyzed oxidation of alanine by cerium(IV) in perchloric acid medium Journal of the Indian Chemical Society, 2005
