Chemical bath deposition of well-aligned ZnO nanorod arrays on Ag rods for photoelectrocatalytic degradation of rhodamine B

Abstract

Phone: þ86 150 9328 3484, Fax: þ86 371 6776 6629ZnO nanorod arrays (NAs) were prepared by a simple two-step process on the Ag rods. The X-ray diffraction and HRTEM characterizations indicated that ZnO nanorods were hexagonal wurtzite single crystalline structure. Photoelectrocatalytic performances of Ag rods with ZnO NAs (ZnO NAs/Ag rods) were studied systematically for the removal of rhodamine B (RhB). Under the optimal condition, the photoelectrocatalytic efficiency was nearly twice the photocatalytic efficiency, which can be attributed to the more efficient separation of photo-generated carriers. Our results show that ZnO NAs/Ag rods should be a promising photoelectrode for photoelectrocatalysis progress.

All‐Inorganic CsPbBr3/Cs4PbBr6 Perovskite/ZnO for Detection of NO with Enhanced Response and Low‐Work Temperature

“…Morphologies, structures and components of materials XRD patterns and SEM of ZnO are shown in Figure S1 and Figure S2 (Supporting information). Similar to previous reports, [23] the diffraction peaks are indexed to the hexagonal wurtzite-structured ZnO (PDF#36-1451) and the samples are rod-like arrays with an average diameter of 60 nm approximately. [24] As shown in Figure 1a, XRD patterns of the as-prepared CsPbBr 3 /Cs 4 PbBr 6 show that all the observed diffraction peaks can be attributed to the diffraction of CsPbBr 3 (PDF#54-0751) and Cs 4 PbBr 6 (PDF#73-2478) respectively, indicating that the asprepared products are CsPbBr 3 /Cs 4 PbBr 6 composites.…”

Photoelectrocatalytic Degradation of Methylene Blue Using ZnO Nanorods Fabricated on Silicon Substrates

“…As mentioned in the introduction, Han et al 30 A control experiment was conducted by studying the degradation of this dye under UV-ABC irradiation in the absence of electrodes. In this case, about 39% removal of MB was obtained.…”

“…When the potential is applied a reduction of the recombination the photo-generated electron-hole pairs occurs and consequently an increase of the PC efficiency is obtained. 28,29 Nevertheless, at the best of our knowledge, only a few studies are found in the literature using ZnO nanostructures as a photoanode for PEC, including the studies of Hunge et al 6 , Han et al 30 , Liu et al 31 , Lin et al 32 , Suryavanshi et al 33 , and Sarwar et al 34 These employ nanostructured ZnO as photoanodes for PEC. In addition, only the work of Han et al 30 used ZnO synthesized by CBD as a photoanode for PEC applications.…”

Ni–Al layered double hydroxide-coupled layered mesoporous titanium dioxide (Ni–Al LDH/LM-TiO2) composites with integrated adsorption-photocatalysis performance

“…For the treatment of industrial wastewater, the traditionally used technologies are mainly chemical, physicochemical, and biological methods, including electrocatalytic degradation, [1][2][3][4] ultrasonic treatment, 5,6 biological occulation, 7,8 adsorption, 9,10 and photocatalytic degradation. [11][12][13][14][15][16] Photocatalytic degradation, namely, photocatalytic oxidation technology, which uses sunlight and simulated natural light as light sources to act on semiconductor catalysts to produce photogenerated electrons and holes, and reacts with O 2 , H 2 O, and other active substances to generate hydroxyl radicals, superoxide radicals, and other active substances, and eventually decomposes pollutants into harmless inorganic small molecules.…”