One-Pot Hydrothermal Route to Synthesize the Bi-doped Anatase TiO2 Hollow Thin Sheets with Prior Facet Exposed for Enhanced Visible-Light-Driven Photocatalytic Activity

One-Pot Hydrothermal Route to Synthesize the Bi-doped Anatase TiO2 Hollow Thin Sheets with Prior Facet Exposed for Enhanced Visible-Light-Driven Photocatalytic Activity
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一锅水热法合成双掺杂锐钛矿型 TiO2 中空薄片(具有暴露的前刻面以增强可见光驱动的光催化活性)

DOI:
10.1021/acs.iecr.6b00618
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发表时间:
2016-05
影响因子:
4.2
通讯作者:
Liu Xiaoheng
Liu Xiaoheng
中科院分区:
工程技术3区
文献类型:
--
作者:
Wang Weiwei;Zhu Dan;Shen Zhi;Peng Jin;Luo Jie;Liu Xiaoheng

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采用简单的一锅水热合成路线制备了暴露{001}面的铋掺杂(Bi掺杂)锐钛矿型TiO2中空薄片。控制 BiVO4 前驱体浓度对于调节 TiO2 中空薄片催化剂的形貌和 Bi 掺杂浓度起着关键作用。通过在可见光照射(>400 nm)下光降解不同有机染料(包括亚甲基蓝(MB)、甲基橙(MO)、罗丹明-B(RhB)和对硝基苯胺(PNA))来评估所制备的催化剂的光催化活性。结果表明,TiO2 中 0.8 原子% Bi 的最佳掺杂剂实现了最佳的光催化活性,特别是对 PNA 具有更高的光降解性,这可归因于光致电荷分离和转移以及载流子的低本体重组的结果。这次讨论表明,用于太阳能转换的新型 TiO2 纳米结构的设计可以很容易...
A simple one-pot hydrothermal synthesis route has been employed to fabricate the bismuth-doped (Bi-doped) anatase TiO2 hollow thin sheets with {001} facets exposed. Controlling BiVO4 precursor concentration plays a key role in tuning the morphology and the Bi doping concentration of TiO2 hollow thin sheet catalysts. The photocatalytic activity of as-prepared catalysts was evaluated through the photodegradation of different organic dyes under visible light irradiation (>400 nm), including methylene blue (MB), methyl orange (MO), rhodamine-B (RhB), and p-nitroaniline (PNA). Results showed that the optimal dopant of 0.8 atom % Bi in TiO2 achieved the best photocatalytic activity, especially for possessing a much higher photodegradation of PNA, which could be ascribed to the results of photoinduced charge separation and transfer combined with low bulk recombination of charge carriers. This discussion demonstrates that the design of new TiO2 nanostructures for application in solar energy conversion could be ea...
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