α-Fe2O3 nanoclusters confined into UiO-66 for efficient visible-light photodegradation performance

被引：83
作者：
Zhang, Rongbin [1 ]
Du, Biao [1 ]
Li, Qiuchan [1 ]
Cao, Zuqiang [1 ]
Feng, Gang [1 ]
Wang, Xuewen [1 ]
机构：
[1] Nanchang Univ, Coll Chem, Inst Appl Chem, 999 Xuefu Rd, Nanchang 330031, Jiangxi, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2019年 / 466卷
关键词：
alpha-Fe2O3; Confining; UiO-66; Heterostructure; Photocatalysis; Visible-light; METAL-ORGANIC FRAMEWORKS; PHOTOCATALYTIC DEGRADATION; HYDROTHERMAL SYNTHESIS; Z-SCHEME; TIO2; NANOPARTICLES; BIVO4; OXIDE; OXIDATION;
D O I：
10.1016/j.apsusc.2018.10.048
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
alpha-Fe2O3 is narrow bandgap photocatalyst that is widely used for organic-pollutant photodegradation and photoelectrochemical conversion. However, alpha-Fe2O3 with short mean-free path exhibits low photocatalytic activity due to the high recombination rate of photoexcited carriers. Accordingly, the importance of controlling particle size to reduce the recombination rate of alpha-Fe2O3 is increasingly being recognized. In this study, UiO-66 with various pore diameters was employed to confine alpha-Fe2O3 growth. The alpha-Fe2O3 nanoclusters were encapsulated inside the UiO-66 cage through simple adsorption and thermal conversion. The structure and state of alpha-Fe2O3@UiO-66 were studied by SEM, TEM and XPS analyses. Results showed that alpha-Fe2O3@UiO-66 had significantly improved photodegradation efficiency for methylene blue under visible-light irradiation due to the confining effect on alpha-Fe2O3 nanoclusters and the synergistic effect between UiO-66 and alpha-Fe2O3.
引用
收藏
页码：956 / 963
页数：8
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