Surface characterization and photocatalytic reactivity of innovative Ti/TiO2 and Ti/Pt−TiO2 mesh photoelectrodes

作者: XZ Li , FB Li , None

DOI: 10.1023/A:1014761814254

关键词: Auxiliary electrodePlatinumTitaniumChemistryAnalytical chemistryMethyl orangeAnodizingNoble metalX-ray photoelectron spectroscopyWorking electrode

摘要: Novel Ti/TiO2 and Ti/Pt−TiO2 mesh photoelectrodes were produced by anodizing titanium in H2SO4 solution. Their structural surface morphology examined X-ray diffraction (XRD), scanning electronic microscopy (SEM) photoelectron spectroscopy (XPS). The analytical results indicated that the crystal structure, pore size affected significantly voltage current density applied anodization percentage platinum content. of XPS measurement showed binding energy O 1s Ti 2p increased slightly owing to deposition (Pt0, Pt2+ Pt4+) onto TiO2 surface. photoelectrocatalytic (PEC) oxidation methyl orange aqueous solution using meshes was investigated. experimental demonstrated prepared at 160 V 110 mA cm−2 achieved best PEC oxidation. efficiency could be further enhanced applying an electrical bias between working electrode counter electrode. An optimal found 0.6 V, while content 3.37%.

参考文章(9)
Dong Hyun. Kim, Marc A. Anderson, Photoelectrocatalytic degradation of formic acid using a porous titanium dioxide thin-film electrode. Environmental Science & Technology. ,vol. 28, pp. 479- 483 ,(1994) , 10.1021/ES00052A021
Hisao Hidaka, Jincai Zhao, Katsumi Kitamura, Kayo Nohara, Nick Serpone, Ezio Pelizzetti, Photodegradation of surfactants IX: The photocatalysed oxidation of polyoxyethylene alkyl ether homologues at TiO2-water interfaces Journal of Photochemistry and Photobiology A: Chemistry. ,vol. 64, pp. 103- 113 ,(1992) , 10.1016/1010-6030(92)85097-E
K. Vinodgopal, Surat Hotchandani, Prashant V. Kamat, Electrochemically assisted photocatalysis: titania particulate film electrodes for photocatalytic degradation of 4-chlorophenol The Journal of Physical Chemistry. ,vol. 97, pp. 9040- 9044 ,(1993) , 10.1021/J100137A033
XZ Li, HL Liu, PT Yue, YP Sun, None, Photoelectrocatalytic Oxidation of Rose Bengal in Aqueous Solution Using a Ti/TiO2 Mesh Electrode Environmental Science & Technology. ,vol. 34, pp. 4401- 4406 ,(2000) , 10.1021/ES000939K
AKIRA FUJISHIMA, KENICHI HONDA, Electrochemical Photolysis of Water at a Semiconductor Electrode Nature. ,vol. 238, pp. 37- 38 ,(1972) , 10.1038/238037A0
Hisao Hidaka, Tomotaka Shimura, Kazuhiko Ajisaka, Satoshi Horikoshi, Jincai Zhao, Nick Serpone, Photoelectrochemical decomposition of amino acids on a TiO2/OTE particulate film electrode Journal of Photochemistry and Photobiology A: Chemistry. ,vol. 109, pp. 165- 170 ,(1997) , 10.1016/S1010-6030(97)00137-8
K. Leitner, J. W. Schultze, U. Stimming, Photoelectrochemical Investigations of Passive Films on Titanium Electrodes Journal of The Electrochemical Society. ,vol. 133, pp. 1561- 1568 ,(1986) , 10.1149/1.2108969
Michael R. Hoffmann, Scot T. Martin, Wonyong. Choi, Detlef W. Bahnemann, Environmental Applications of Semiconductor Photocatalysis Chemical Reviews. ,vol. 95, pp. 69- 96 ,(1995) , 10.1021/CR00033A004
Amy L. Linsebigler, Guangquan. Lu, John T. Yates, Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results Chemical Reviews. ,vol. 95, pp. 735- 758 ,(1995) , 10.1021/CR00035A013