Formation of ZnO nanowires by anodization under hydrodynamic conditions for photoelectrochemical water splitting

被引：40
作者：
Batista-Grau, P. [1 ]
Sanchez-Tovar, R. [1 ,2 ]
Fernandez-Domene, R. M. [1 ]
Garcia-Anton, J. [1 ]
机构：
[1] Univ Politecn Valencia, Inst Univ Seguridad Ind Radiofls & Medioambiental, IEC, Camino Vera S-N, E-46022 Valencia, Spain
[2] Univ Valencia, Dept Ingn Quim, Av Univ S-N, E-46100 Burjassot, Spain
来源：
SURFACE & COATINGS TECHNOLOGY | 2020年 / 381卷
关键词：
Zinc oxide; Anodization; Hydrodynamic conditions; Bicarbonate; Photoelectrocatalyst; Water splitting; ANODIC-OXIDATION; ZINC; PHOTOANODES;
D O I：
10.1016/j.surfcoat.2019.125197
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The present work studies the influence of hydrodynamic conditions (from 0 to 5000 rpm) during Zn anodization process on the morphology, structure and photoelectrocatalytic behavior of ZnO nanostructures. For this purpose, analysis with Confocal Laser-Raman Spectroscopy, Field Emission Scanning Electron Microscope (FE-SEM) and photoelectrochemical water splitting tests were performed. This investigation reveals that hydrodynamic conditions during anodization promoted the formation of ordered ZnO nanowires along the surface that greatly enhance its stability and increases the photocurrent density response for water splitting in a 159% at the 5000 rpm electrode rotation speed.
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页数：7
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