期刊
DALTON TRANSACTIONS
卷 42, 期 31, 页码 11242-11251出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3dt51293b
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资金
- National Natural Science Foundation of China [51272070, 21031001, 20971040, 21001042, 21101060, 51102082]
- Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China [708029]
- Research Fund for the Doctoral Program of Higher Education of China [20112301110002]
- Special Fund of Technological Innovation Talents in Harbin City [2012RFQXG111]
Hierarchical flower-like TiO2 with an anatase-rutile heterojunction was prepared by a hydrothermal process in the presence of titanium trichloride and poly(sodium-p-styrenesulfonate) (PSS). The morphology evolution process and formation mechanism of the as-obtained products were investigated in detail. It was found that morphology and crystalline phase can be easily adjusted by changing the reaction time or solution system. On the basis of this hierarchical nanoflower structure, a visible light sensitive Ag/hierarchical flower-like TiO2 plasmonic photocatalyst was fabricated. The obtained composite exhibited significantly visible-light photocatalytic activity, which could be attributed to the existence of a large number of uniformly distributed Ag-TiO2 effective nanojunctions, enhanced visible light-harvesting and improved charge separation due to the migration across the anatase-rutile interface.
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