Effects of size on the photocatalytic properties of high-index faceted pseudocubic and rhombohedral α-Fe2O3 nanocrystals

被引：2
|
作者：
Wang, Zhuan [1 ]
Xie, Wenyu [2 ]
Yang, Bo [1 ]
Song, Li [1 ]
Zhao, Xueying [1 ]
Khan, Aslam [1 ]
Yue, Fan [1 ]
Su, Xintai [3 ]
Yang, Chao [1 ]
机构：
[1] Xinjiang Univ, Coll Chem & Chem Engn, Minist Key Lab Oil & Gas Fine Chem, Urumqi 830046, Peoples R China
[2] Guangdong Univ Petrochem Technol, Guangdong Prov Key Lab Petrochem Pollut Proc & Co, Sch Environm Sci & Engn, Maoming 525000, Guangdong, Peoples R China
[3] South China Univ Technol, Key Lab Pollut Control & Ecosyst Restorat Ind Clu, Minist Educ, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
来源：
RSC ADVANCES | 2019年 / 9卷 / 68期
关键词：
DRIVEN WATER OXIDATION; METAL-ORGANIC FRAMEWORKS; GROWTH-MECHANISM; GRAPHENE OXIDE; FE2O3; CO; NANOPARTICLES; SHAPE; NANOSHEETS; CATALYSTS;
D O I：
10.1039/c9ra08561k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Size-controlled and high-index faceted alpha-Fe2O3 nanocrystals with pseudocubic and rhombohedral morphologies were synthesized through the hydrothermal treatment of beta-FeOOH at different pHs. The size effect on the photocatalytic oxygen evolution efficiency of high-index faceted alpha-Fe2O3 nanocrystals was investigated. Rhombohedral alpha-Fe2O3 (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.
引用
收藏
页码：40024 / 40030
页数：7
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