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

页码：40024 / 40030

页数：7

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