Статья

Chromium-doped bismuth titanate nanosheets as enhanced visible-light photocatalysts with a high percentage of reactive {110} facets

Jungang HouSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, ChinaRui CaoSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, ChinaZheng WangSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, ChinaShuqiang JiaoSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, ChinaHongmin ZhuSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, China

2011en

ABI

Аннотация

Single-crystalline chromium doped bismuth titanate (Bi4Ti3−xCrxO12, x = 0.0–0.5) nanosheets with exposed {110} facets have been synthesized via a facile hydrothermal process. The Bi4Ti3−xCrxO12nanosheets possess well-defined tetragonal shapes with landscape dimension of 100–300 nm and thickness of 10–30 nm. The in-plane surfaces of the nanosheets lies on {001}, and the side surfaces are (110) and (10). Extension of the light absorption from the ultraviolet region to the visible-light region arises from the Cr 2p levels confirmed by XPS spectra. The Bi4Ti2.6Cr0.4O12 nanosheets with high stability showed the highest photocatalytic performance of H2 evolution from water under visible-light irradiation. Furthermore, the heterostructures by using the NiOx nanoparticles tightly coupled on the surface of Bi4Ti2.6Cr0.4O12 nanosheets, exhibited an enhanced photocatalytic activity due to the decrease in the recombination rate of the photoinduced electrons and holes, demonstrating that NiOx/Bi4Ti2.6Cr0.4O12 nanosheet is a promising candidate as a visible light photocatalyst.

Перевод пока недоступен

Идентификаторы

DOI: 10.1039/c0jm04374e

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar