Fabrication of Au@α-Fe2O3 particles with an enhanced visible-light photocatalysis activity

被引：10

作者：

Lin, Qing ^{[1
]}

Xia, Shuyi ^{[1
]}

Li, Shuiping ^{[2
]}

Fu, Hailuo ^{[1
]}

Liang, Dong ^{[1
]}

Wang, Zhao ^{[1
]}

Zhang, Xiaojuan ^{[1
]}

机构：

[1] Jinling Inst Technol, Sch Mat Technol, Nanjing 211169, Peoples R China

[2] Yangzhou Univ, Coll Civil Sci & Engn, Yangzhou 225127, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2023年 / 307卷

基金：

中国国家自然科学基金;

关键词：

Au nanoparticle; poly(vinyl pyrrolidone); Photocatalytic property; ALPHA-FE2O3; DEGRADATION; HETEROSTRUCTURES; NANOPARTICLES; MORPHOLOGY; OXIDATION;

D O I：

10.1016/j.matchemphys.2023.128173

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Au nanoparticles deposited & alpha;-Fe2O3 (Au@& alpha;-Fe2O3) particles with a well-defined structure were fabricated by the hydrothermal and the magnetron sputtering methods. After deposited 4.6% Au, Au@& alpha;-Fe2O3 shows a new absorption peak at 550 nm in the UV-Vis spectrum, and its bandgap narrows from 2.20 to 1.93 eV. Moreover, the fluorescence intensity and electrochemical impedance of 4.6% Au@& alpha;-Fe2O3 decrease significantly, while the photocurrent increases from 0.20 to 0.56 & mu;A cm-2. Au nanoparticles extend the visible-light absorption performance and inhibit the recombination of electron-hole pairs of Au@& alpha;-Fe2O3 particles. The photocatalytic property of Au@& alpha;-Fe2O3 particles becomes more stable, and the photocatalytic efficiency of Au@& alpha;-Fe2O3 particles is about 1 time higher than that of & alpha;-Fe2O3 particles.

引用

页数：8

共 33 条

[31] Revisiting terephthalic acid and coumarin as probes for photoluminescent determination of hydroxyl radical formation rate in heterogeneous photocatalysis
Zerjav, Gregor
Albreht, Alen
Vovk, Irena
Pintar, Albin
[J]. APPLIED CATALYSIS A-GENERAL, 2020, 598
[32] Modification of polyvinylidene fluoride membrane with different shaped α-Fe2O3 nanocrystals for enhanced photocatalytic oxidation performance
Zhang, Enlei
Wang, Lijie
Zhang, Bengui
Xie, Yingpeng
Sun, Chuanbi
Jiang, Chao
Zhang, Ying
Wang, Guosheng
[J]. MATERIALS CHEMISTRY AND PHYSICS, 2018, 214 : 41 - 47
[33] Size effects of Ag nanoparticles on plasmon-induced enhancement of photocatalysis of Ag-α-Fe2O3 nanocomposites
Zhang, Shaofeng
Ren, Feng
Wu, Wei
Zhou, Juan
Sun, Lingling
Xiao, Xiangheng
Jiang, Changzhong
[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2014, 427 : 29 - 34

← 1 2 3 4 →