ZnO and TiO2 1D nanostructures for photocatalytic applications

Optimized photodegradation of Bisphenol A in water using ZnO, TiO<sub>2</sub> and SnO<sub>2</sub> photocatalysts under UV radiation as a decontamination procedure

“…Furthermore, many reports showed that ZnO has similar photodegradation mechanism as TiO 2 so that under UV light superoxide radicals ( q O − 2 ) and hydroxyl radicals ( q OH) are generated in water, accelerating the oxidation of organic contaminants (Mills and Le Hunte, 1997;Rusmidah et al, 2010;Yamaguchi et al, 1998). These properties make the ZnO catalyst more susceptible to absorbing UV light below 380 nm as well as a visible spec- trum range when it mixed with different materials (Guo et al, 2011). The GC-MS results for already degraded samples showed concentrations of both butylated hydroxytoluene and chlorohydroquinone as the major degradation byproducts at 88 % confidence.…”

Visible Light Assisted Photocatalytic Activity of Co-doped ZnO, In-Doped ZnO and (Co, In) co- doped ZnO Nanoparticles

“…Large amounts of colored wastewater are discharged into the natural bodies, releasing toxic and potentially carcinogenic substances, can cause serious harm to the aquatic life [1][2][3]. ZnO is a low-cost alternative photocatalyst for the photodegradation of several dyes owing to its high photosensitivity and thermal stability [4][5][6][7][8][9][10]. In order to improve the photo -response of ZnO doping or surface modification with transition, metal cations have been considered as a possible way to shift the optical absorption towards the visible region [11][12][13][14][15].…”

“…Moreover, the simultaneous doping of two kinds of an atom into ZnO has attracted considerable interest. Nano-crystalline catalyst Co-BiVO 4 [18] showed a high photocatalytic activity under visible light. M-BiVO 4 (M=Ag, Co, and Ni) [19] ascribed to the incorporation of Co into the crystal of BiVO 4 .…”

Experimental statistic design applied for obtaining Zn:xCe by microwave-assisted hydrothermal method with photocatalytic property

“…Zinc oxide is an intrinsic n-type semiconductor with band gap E g = 3.37 eV and large binding energy 60 meV, which crystallizes in the hexagonal system with wurtzite type [4,5]. Because of the high photocatalytic activity, low cost, and present ecological aspects [6,7], ZnO has been widely used as photocatalyst [8].…”