Surface sensitization of β-Bi2O3: deposition of Bi2S3 nanocrystals by SILAR method

被引：0

作者：

Zhang F. ^{[1
]}

Wang J. ^{[1
]}

Wang Y. ^{[2
]}

Jiang L. ^{[1
]}

机构：

[1] School of Metallurgy and Environment, Central South University, Changsha

[2] Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2022年 / 53卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Bi[!sub]2[!/sub]S[!sub]3[!/sub] nanocrystals; Photoelectrochemical catalysis; SILAR; β-Bi[!sub]2[!/sub]O[!sub]3[!/sub;

D O I：

10.11817/j.issn.1672-7207.2022.02.005

中图分类号：

学科分类号：

摘要：

A layered porous β-Bi2O3 photoanode was prepared on the fluorine-doped tin oxide(FTO) glass by the chemical bath deposition method. To improve the photoelectrochemical(PEC) performance, bismuth sulfide nanocrystals were in situ prepared on the surface of β-Bi2O3 by the successive ion layer adsorption reaction method (SILAR). Bi2S3 nanocrystals would act as sensitizer and expand the light absorption ability of the pristine Bi2O3. The results reveal that Bi2S3/β-Bi2O3 heterojunction is constructed, which can significantly enhance the optical response of the material to visible light. At the light intensity of 100 mW/cm2 and bias potential of 1.2 V (vs RHE), the photocurrent density of the as-prepared Bi2S3/β-Bi2O3 photoanode reaches 2.6 mA/cm2 in 1 mol/L Na2SO4 solution, showing promoted PEC activity. © 2022, Central South University Press. All right reserved.

引用

页码：409 / 417

页数：8

共 30 条

[1] YANG Xin, LIAN Xiaojuan, LIU Shangjun, Et al., Visible light photoelectrochemical properties of β-Bi2O3 nanoporous films: a study of the dependence on thermal treatment and film thickness, Applied Surface Science, 282, pp. 538-543, (2013)
[2] GUAN Zichao, WANG Haipeng, WANG Xia, Et al., Fabrication of heterostructured β-Bi2O3-TiO2 nanotube array composite film for photoelectrochemical cathodic protection applications, Corrosion Science, 136, pp. 60-69, (2018)
[3] KIM M W, JOSHI B, SAMUEL E, Et al., Highly nanotextured β-Bi2O3 Pillars by electrostatic spray deposition as photoanodes for solar water splitting, Journal of Alloys and Compounds, 764, pp. 881-889, (2018)
[4] SALOMAO P E A, GOMES D S, FERREIRA E J C, Et al., Photoelectrochemical hydrogen production from water splitting using heterostructured nanowire arrays of Bi2O3/BiAl oxides as a photocathode, Solar Energy Materials and Solar Cells, 194, pp. 276-284, (2019)
[5] CHEN Lang, HE Jie, YUAN Qing, Et al., Environmentally benign synthesis of branched Bi2O3-Bi2S3 photocatalysts by an etching and re-growth method, Journal of Materials Chemistry A, 3, 3, pp. 1096-1102, (2015)
[6] DACHRAOUI O, MERINO J M, MAMI A, Et al., Annealing study and thermal investigation on bismuth sulfide thin films prepared by chemical bath deposition in basic medium, Applied Physics A, 124, 2, pp. 1-11, (2018)
[7] YAN Sang, CAO Xi, DAI Guangdong, Et al., Facile one-pot synthesis of novel hierarchical Bi2O3/Bi2S3 nanoflower photocatalyst with intrinsic p-n junction for efficient photocatalytic removals of RhB and Cr(VI), Journal of Hazardous Materials, 381, (2020)
[8] YU Chongfei, YANG Pengyan, Luna TIE, Et al., One-pot fabrication of β-Bi2O3@Bi2S3 hierarchical hollow spheres with advanced sunlight photocatalytic RhB oxidation and Cr(VI) reduction activities, Applied Surface Science, 455, pp. 8-17, (2018)
[9] KIM J H, LIM T, PARK J Y, Et al., Understanding and improving photoelectrochemical performance of Bi2O3/Bi2S3 composite, New Journal of Chemistry, 43, 30, pp. 11893-11902, (2019)
[10] WANG Fengxia, YE Cui, MO Shi, Et al., Enhanced photoelectrochemical sensing based on novel synthesized Bi2S3@Bi2O3 nanosheet heterostructure for ultrasensitive determination of L-cysteine, Analytical and Bioanalytical Chemistry, 411, 14, pp. 3059-3068, (2019)

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