尺寸对高指数面伪立方和菱面体α-FeO纳米晶体光催化性能的影响。
Effects of size on the photocatalytic properties of high-index faceted pseudocubic and rhombohedral α-FeO nanocrystals.
作者信息
Wang Zhuan, Xie Wenyu, Yang Bo, Song Li, Zhao Xueying, Khan Aslam, Yue Fan, Su Xintai, Yang Chao
机构信息
Ministry Key Laboratory of Oil and Gas Fine Chemicals, College of the Chemistry and Chemical Engineering, Xinjiang University Urumqi 830046 China
Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology Maoming Guangdong 525000 China.
出版信息
RSC Adv. 2019 Dec 4;9(68):40024-40030. doi: 10.1039/c9ra08561k. eCollection 2019 Dec 2.
Size-controlled and high-index faceted α-FeO nanocrystals with pseudocubic and rhombohedral morphologies were synthesized through the hydrothermal treatment of β-FeOOH at different pHs. The size effect on the photocatalytic oxygen evolution efficiency of high-index faceted α-FeO nanocrystals was investigated. Rhombohedral α-FeO (pH 6.0) exhibits an outstanding apparent quantum yield of 9.93% and an oxygen evolution efficiency of 20.3%, which can be attributed to the optimal size and high-indexed {104} planes. This work provides a new idea for the design of high activity water oxidation catalysts, through the size optimization of high-index faceted materials.
通过在不同pH值下对β-FeOOH进行水热处理，合成了具有假立方和菱面体形态的尺寸可控且具有高指数刻面的α-FeO纳米晶体。研究了尺寸对高指数刻面α-FeO纳米晶体光催化析氧效率的影响。菱面体α-FeO（pH 6.0）表现出9.93%的出色表观量子产率和20.3%的析氧效率，这可归因于其最佳尺寸和高指数{104}面。这项工作通过对高指数刻面材料进行尺寸优化，为设计高活性水氧化催化剂提供了新思路。
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