Photoelectrocatalytic activity of a hydrothermally grown branched Zno nanorod-array electrode for paracetamol degradation

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題名:	Photoelectrocatalytic activity of a hydrothermally grown branched Zno nanorod-array electrode for paracetamol degradation
作者:	林進榮;Lin, Chin Jung;Liao, Shu-Jun;Kao, Li-Cheng;Liou, Sofia Ya Hsuan
貢獻者:	工學院環境工程研究所
關鍵詞:	acetaminophen;Acetaminophen - chemistry;additives;ammonia;Arrays;Branched;carboxylic acids;Catalysis;Degradation;Drug Residues;Electrodes;nanoparticles;Nanorod;nanorods;Nanostructure;Nanotubes;Oxidation-Reduction;Paracetamol;photocatalysis;Photocatalytic;Photochemistry;Photoelectrocatalytic;pollutants;Specific surface;surface area;Wurtzite;X-Ray Diffraction;Zinc oxide;Zinc Oxide - chemistry;ZnO
日期:	2015-06-01
上傳時間:	2026-04-23 15:07:15 (UTC+8)
出版者:	Elsevier;Netherlands: Elsevier B.V
摘要:	摘要： [Display omitted] •Hierarchical branched ZnO nanorod-array electrode was obtained by a solution route.•The branched structures result in light-trapping effect, and allow the reactants to access the surface easily.•3-fold increase in reaction rate of photoelectro-degradation of paracetamol. Hierarchical branched ZnO nanorod (B-ZnR) arrays as an electrode for efficient photoelectrocatalytic degradation of paracetamol were grown on fluorine-doped tin oxide substrates using a solution route. The morphologic and structural studies show the ZnO trunks are single-crystalline hexagonal wurtzite ZnO with a [0001] growth direction and are densely covered by c-axis-oriented ZnO branches. The obvious enhancement in photocurrent response of the B-ZnR electrode was obtained than that in the ZnO nanoparticle (ZnO NP) electrode. For the photoelectrocatalytic degradation of paracetamol in 20h, the conversion fraction of the drug increased from 32% over ZnO NP electrode to 62% over B-ZnR arrays with about 3-fold increase in initial reaction rate. The light intensity-dependent photoelectrocatalytic experiment indicated that the superior performance over the B-ZnR electrode was mainly ascribed to the increased specific surface area without significantly sacrificing the charge transport and pollutant diffusion efficiencies. Two aromatic intermediate compounds were observed and eventually converted into harmless carboxylic acids and ammonia. Hierarchical tree-like ZnO arrays can be considered effective alternatives to improve photoelectro degradation rates without the need for expensive additives. 其他題名： J Hazard Mater 出版者： Netherlands: Elsevier B.V 出版日期： 2015-06-30 出處： Journal of Hazardous Materials, 2015-06, Vol.291, p.9-17 版權： 2015 Elsevier B.V. 版權： Copyright © 2015 Elsevier B.V. All rights reserved. 識別號： ISSN: 0304-3894 識別號： ISSN: 1873-3336 識別號： EISSN: 1873-3336 識別號： DOI: 10.1016/j.jhazmat.2015.02.035 識別號： PMID: 25748997
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