Visible light-driven photoelectrocatalytic degradation of acid yellow 17 using Sn3O4 flower-like thin films supported on Ti substrate (Sn3O4/TiO2/Ti)

被引：36

作者：

Huda, A. ^{[1
,2
]}

Suman, P. H. ^{[2
]}

Torquato, L. D. M. ^{[2
]}

Silva, Bianca F. ^{[2
]}

Handoko, C. T. ^{[1
]}

Gulo, F. ^{[1
]}

Zanoni, M. V. B. ^{[2
]}

Orlandi, M. O. ^{[2
]}

机构：

[1] Sriwijaya Univ, Grad Program, Dept Environm Sci, Palembang 30139, Indonesia

[2] Sao Paulo State Univ UNESP, Inst Chem, BR-14800060 Araraquara, SP, Brazil

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2019年 / 376卷

基金：

巴西圣保罗研究基金会;

关键词：

Sn3O4; Microwave-assisted hydrothermal synthesis; Visible-light photocatalysis; Photoelectrocatalysis; Dye degradation; AQUEOUS-SOLUTION; DYE; HETEROSTRUCTURES; NANOSTRUCTURES; PHOTOCATALYSTS; NANOBELTS;

D O I：

10.1016/j.jphotochem.2019.01.039

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This article reports a new method for preparing mixed valence tin oxide (Sn3O4) flower-like nanostructures using a microwave-assisted route. Thin-film Sn3O4/TiO2/Ti electrodes demonstrated highly efficient visible light driven photocatalytic degradation of monoazo acid yellow 17 (AY17) dye, reaching 95% color removal after 60 min at pH 2. Moreover, under low bias potential (0.5 V), the photoelectrocatalytic efficiency increased to 97% color removal and 83% removal of total organic carbon at a kinetic rate almost 3-fold higher than in photocatalysis. Liquid chromatography mass spectrometry was used to identify intermediate formation, and oxidation performance was proposed for photocatalytic and photoelectrocatalytic degradation with no organics identified after 120 min of treatment. The results indicate that Sn3O4/TiO2/Ti photoelectrodes offer a simple, green method for wastewater treatment employing visible light source.

引用

页码：196 / 205

页数：10

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