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Phosphorous-Modified TiO2 with Excellent Thermal Stability and Its Application to the Degradation of Pollutants in Water
Jin Chen; Qiu Shunchen; Zhu Yuexiang; Xie Youchang
2011-07-01
Source PublicationCHINESE JOURNAL OF CATALYSIS
ISSN0253-9837
Volume32Issue:7Pages:1173-1179
AbstractThe phosphorous-modified TiO2(P-TiO2) was synthesized by a hydrothermal method. The as-prepared P-TiO2 was evaluated for the degradation of methylene blue, the dechlorination of 4-chlorophenol, and the inactivation of Escherichia colt. In all these experiments, P-TiO2 shows superior activity compared with pure TiO2 and even better activity than the commercially available P25 in most cases. By carrying out methylene blue degradation in the presence of different scavengers, center dot OH radicals were found to be the dominant reactive oxidizing species. The excellent performance of P-TiO2 was correlated with its pronounced ability to generate center dot OH radicals under illumination. We also found that P-TiO2 is extraordinarily stable against annealing. Its transformation from anatase to rutile does not occur until calcination as high as 950 degrees C. This phase transformation is retarded since the phosphate species on the surface of the particles acts as a barrier to grain boundary nucleation. This peculiar feature of P-TiO2 gives it reliable performance during water decontamination even after calcination at 900 degrees C since it retains a 100% anatase phase at this stage.
KeywordPhosphorous Modification Titanium Dioxide Photocatalysis Thermal Stability Antibacterial
DOI10.1016/S1872-2067(10)60229-X
Indexed BySCI
Language英语
WOS IDWOS:000293319300010
PublisherSCIENCE PRESS
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/71740
Collection中国科学院化学研究所
Corresponding AuthorZhu Yuexiang
AffiliationPeking Univ, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Jin Chen,Qiu Shunchen,Zhu Yuexiang,et al. Phosphorous-Modified TiO2 with Excellent Thermal Stability and Its Application to the Degradation of Pollutants in Water[J]. CHINESE JOURNAL OF CATALYSIS,2011,32(7):1173-1179.
APA Jin Chen,Qiu Shunchen,Zhu Yuexiang,&Xie Youchang.(2011).Phosphorous-Modified TiO2 with Excellent Thermal Stability and Its Application to the Degradation of Pollutants in Water.CHINESE JOURNAL OF CATALYSIS,32(7),1173-1179.
MLA Jin Chen,et al."Phosphorous-Modified TiO2 with Excellent Thermal Stability and Its Application to the Degradation of Pollutants in Water".CHINESE JOURNAL OF CATALYSIS 32.7(2011):1173-1179.
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