Mechanism of photodecomposition of H2O2 on TiO2 surfaces under visible light irradiation

CORC > 化学研究所 > 中国科学院化学研究所

	Mechanism of photodecomposition of H2O2 on TiO2 surfaces under visible light irradiation
	Li, XZ; Chen, CC; Zhao, JC
刊名	LANGMUIR
	2001-06-26
卷号	17 期号:13 页码:4118-4122
ISSN号	0743-7463
英文摘要	Photodecomposition of hydrogen peroxide on TiO2 surfaces under visible irradiation (lambda > 420 nm) was investigated, and an interesting result was found that small organic compounds such as salicylic acid were degraded in the presence of TiO2 and H2O2 under visible irradiation, although either TiO2 or H2O2 alone cannot absorb visible light to decompose H2O2 or small organic compounds. Furthermore, the effects of H2O2 concentration, pH, and the wavelength of irradiation light on the degradation of H2O2 were studied. The photodegradation of H2O2 occurred via a zero-order process, and (OH)-O-. radicals were detected by electron paramagnetic resonance experiments in visible-light-irradiated aqueous TiO2 suspensions. A reaction mechanism for the decomposition of H2O2 on the TiO2 surfaces is proposed involving a photoinduced electron transfer of the surface complexes of =Ti-IV-OOH.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000169460000050
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/78001]
专题	中国科学院化学研究所
通讯作者	Zhao, JC
作者单位	Acad Sinica, Lab Photochem, Ctr Mol Sci, Inst Chem, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Li, XZ,Chen, CC,Zhao, JC. Mechanism of photodecomposition of H2O2 on TiO2 surfaces under visible light irradiation[J]. LANGMUIR,2001,17(13):4118-4122.
APA	Li, XZ,Chen, CC,&Zhao, JC.(2001).Mechanism of photodecomposition of H2O2 on TiO2 surfaces under visible light irradiation.LANGMUIR,17(13),4118-4122.
MLA	Li, XZ,et al."Mechanism of photodecomposition of H2O2 on TiO2 surfaces under visible light irradiation".LANGMUIR 17.13(2001):4118-4122.