Preparation, Characterization and Photocatalytic Activity of ZnO and Mn Doped ZnO Nanoparticles

Abstract

The present study deals with the synthesis and characterizations of zinc oxide and manganese doped zinc oxide nanoparticles. The nanoparticles were synthesized by using simple hydrothermal technique and characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and transmission electron microscopy (TEM). The XRD analysis of different samples revealed the presence of wurtzite phase of all the samples. The TEM analysis revealed the spherical or hexagonal shape of the crystalline particles with smooth surfaces. Further the effect of manganese doping on the photocatalytic performance was also investigated. For the photocatalytic experiments, the degradation of Direct Blue 15 dye in aqueous phases was examined under UVand solar irradiation.

Manganese-Doped Zinc Oxide Nanostructures as Potential Scaffold for Photocatalytic and Fluorescence Sensing Applications

“…Furthermore, the high solubility of ZnO [46], wide direct band gap energy of 3.37 eV, and large exciton binding energy of 60 meV [47,48] are properties that show improvements due to the large magnetic moment of the Mn atom. The solution combustion synthesis route was utilized in the present paper, as this is a time and energy-saving single-step facile process for the bulk production of nanoparticles [49,50]. The as-synthesized Mn-doped ZnO nanomaterial has been utilized for the fabrication of a luminescence chemical sensor for the detection of ciprofloxacin as well as the degradation of methyl orange as an Azo dye in aqueous medium.…”

Photocatalytic degradation of the antibiotic levofloxacin using highly crystalline TiO2 nanoparticles

“…is one of the most promising techniques for the complete degradation of organic compounds. [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] Among various heterogeneous semiconductor photocatalysts, TiO 2 possesses a special place due to its inertness, long term stability, non-toxicity, low-cost synthesis and easy recovery by filtration and centrifugation methods, wide band gap (E bg = 3.2 eV for anatase phase) and several other excellent properties. 43,44 Due to these aforementioned properties, TiO 2 has been widely used for the effective photocatalytic degradation of various dyes and other organic pollutants.…”

Synthesis, Structural and Optical Properties of Mn Doped ZnO with its Photocatalytic Activity

“…Hence, the Mn is assumed to be a profound donor in ZnO. Many research groups have examined the properties of ZnO powder and ZnO doped with selected transition metal ions [19][20][21][22]. The preparation method and the ambient conditions affect the characteristic properties of metal oxide semiconductors.…”

“…The preparation method and the ambient conditions affect the characteristic properties of metal oxide semiconductors. Different methods of synthesis such as hydrothermal [22], sol-gel [23], co-precipitation [24], combustion [25], solvo-thermal [26] etc. are used to prepare doped and undoped ZnO.…”

“…Of late, the significant interest in UV/light induced chemical reactions on the transition metal-doped ZnO in slurry is increasing. The studies are fewer in number and therefore the effect of dopant on ZnO is still ambiguous [22,27]. A group of researchers reported that the photocatalytic activity, upon irradiation with UV of MnXZn(1-X)O increases up to x = 2 mol %.…”