Effect of Ni doping on structural, optical and photocatalytic properties of Zn1-XNiXO nanoparticles prepared by different pH conditions

Abstract

Zn1-XNiXO (x = 0.00, 0.02, 0.04 & 0.06 mol %) nanoparticles were prepared by simple co-precipitation method. The influences of Ni doping on structure, morphology, optical and photocatalytic properties were investigated by means of Xray diffraction, scanning electron microscopy, UV–Vis spectrophotometer and photochemical reaction method. The obtained result shows that the prepared ZnO nanocrystals were hexagonal wurtzite structure and the average crystallite size decreases with increase of Ni doping. The increase of visible light absorption and increase of band gap were found with the increase of Ni doping concentration, which enable the sample harvest more photons to excite the electron from valence band. The photocatalytic properties of Ni doped ZnO nanocrystals shows enhanced activity that the pure ZnO nanocrystals. The photocatalytic activities were not significantly affected by the particle size and 0.04% Ni doped ZnO nanocrystals shows best catalytic activity than the other catalysts.

Experimental Investigation of Thermodynamics, Kinetics, and Equilibrium of Nickel Ion Removal from Wastewater Using Zinc Oxide Nanoparticles as the Adsorbent

“…The intensity of the peak at 1658.78 cm −1 is considerably diminished to 1597.06 cm −1 after Ni (II) loaded. The move of the peak from 1078.21 to 1080.14 cm −1 suggests the contribution of the C-O set in limited Ni (II).These results are in agreement with a pervious reported study [27]. c) Surface morphology test SEM measurement of the able to adsorb substances is the most significant estimation since the adsorption limit principally relies upon structure and porosity for the surface [20,27].…”

Effect of In2O3 Dopant on the Properties of V2O5 Thin Films Prepared by Vacuum Deposition on ITO Substrates

“…The band gap energy of pure and In 2 O 3 doped V 2 O 5 thin film has been calculated by using the relation Eg = hc/λ and the calculated values 3.96, 3.8 and 3.6 are correspond to pure, 4, and 8% In 2 O 3 doped V 2 O 5 thin films respectively. The observed Eg value is in good agreement with the Eg value determined in literature [26]. From these values it is concluded that the band gap energy decreases with In 2 O 3 doping, which shows a red shift in wavelength.…”

Phytogenic Synthesis and Characterization of NiO-ZnO Nanocomposite for the Photodegradation of Brilliant Green and 4-Nitrophenol

“…Due to industrial revolution, environmental pollution exponentially increases with passage of time by releasing carcinogenic and mutagenic hazardous wastes and their side products to aqueous environment [1,2]. Major contributors of water and air contamination are food, paper, textile, and pharmaceutical industries; among these, textile industries produce many toxic substances, and due to nonbiodegradability and stability of organic pollutants, they are considered deadly [3,4]. Different dyes such as methylene blue, golden yellow, and eriochrome black T have wide range of applications, but they are lethal for all life forms [5][6][7].…”