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Wang WK, Chen JJ, Li WW, et al. Synthesis of Pt-Loaded Self-Interspersed Anatase TiO2 with a Large Fraction of (001) Facets for Efficient Photocatalytic Nitrobenzene Degradation. ACS Appl Mater Interfaces. 2015;7(36):20349-59doi: 10.1021/acsami.5b06161.
Wang, W. K., Chen, J. J., Li, W. W., Pei, D. N., Zhang, X., & Yu, H. Q. (2015). Synthesis of Pt-Loaded Self-Interspersed Anatase TiO2 with a Large Fraction of (001) Facets for Efficient Photocatalytic Nitrobenzene Degradation. ACS applied materials & interfaces, 7(36), 20349-59. https://doi.org/10.1021/acsami.5b06161
Wang, Wei-Kang, et al. "Synthesis of Pt-Loaded Self-Interspersed Anatase TiO2 with a Large Fraction of (001) Facets for Efficient Photocatalytic Nitrobenzene Degradation." ACS applied materials & interfaces vol. 7,36 (2015): 20349-59. doi: https://doi.org/10.1021/acsami.5b06161
Wang WK, Chen JJ, Li WW, Pei DN, Zhang X, Yu HQ. Synthesis of Pt-Loaded Self-Interspersed Anatase TiO2 with a Large Fraction of (001) Facets for Efficient Photocatalytic Nitrobenzene Degradation. ACS Appl Mater Interfaces. 2015 Sep 16;7(36):20349-59. doi: 10.1021/acsami.5b06161. Epub 2015 Sep 01. PMID: 26308282.
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ACS Appl Mater Interfaces. 2015 Sep 16;7(36):20349-59. doi: 10.1021/acsami.5b06161. Epub 2015 Sep 01.

Synthesis of Pt-Loaded Self-Interspersed Anatase TiO2 with a Large Fraction of (001) Facets for Efficient Photocatalytic Nitrobenzene Degradation.

ACS applied materials & interfaces

Wei-Kang Wang, Jie-Jie Chen, Wen-Wei Li, Dan-Ni Pei, Xing Zhang, Han-Qing Yu

Affiliations

  1. Department of Chemistry, University of Science & Technology of China , Hefei, 230026, China.

PMID: 26308282 DOI: 10.1021/acsami.5b06161

Abstract

TiO2 is capable of directly utilizing solar energy for sustainable energy harvest and water purification. Facet-dependent performance of TiO2 has attracted enormous interests due to its tunable photocatalytic activity toward photoredox transformations, but information about the noble-metal-loaded TiO2 for its facet-dependent photocatalytic performance, especially in pollutant degradation systems, is limited. In this work, inspired by our previous theoretical calculations about the roles of the crystal surface in Pt-loaded TiO2 in its enhanced photocatalytic capacity, TiO2 nanocrystals with interspersed polyhedron nanostructures and coexposed (001) and (101) surfaces as a support of Pt nanoparticles are prepared in a simple and relatively green route. Also, their performance for photocatalytic degradation of nitrobenzene (NB), a model organic pollutant, is explored. The experimental results demonstrate that the NB photodegradation and photoconversion efficiencies are significantly enhanced by uniformly loading Pt nanoparticles on the crystal surfaces, but the Pt nanoparticles deposited on only the (101) surface have no contribution to the improved NB photodegradation. Furthermore, the liquid chromatography mass spectrometry results also show that NB photodegradation tends to proceed on the (001) surface of Pt/TiO2 for the generation of nitrophenol intermediates through the photooxidation pathway. This work provides a new route to design and construct advanced photocatalysts toward pollutant photoredox conversions and deepens our fundamental understanding about crystal surface engineering.

Keywords: crystal surface; nitrobenzene; noble-metal deposition; photocatalysis; titanium dioxide

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