Cs-doped α-Bi2O3 microplates: Hydrothermal synthesis and improved photochemical activities

被引：33

作者：

Huang, Yanlin ^{[1
]}

Qin, Jie ^{[1
]}

Hu, Changhao ^{[1
]}

Liu, Xuanxuan ^{[1
]}

Wei, Donglei ^{[2
,3
]}

Seo, Hyo Jin ^{[2
,3
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[2] Pukyong Natl Univ, Dept Phys, Busan 608737, South Korea

[3] Pukyong Natl Univ, Interdisciplinary Program Biomed Engn, Busan 608737, South Korea

来源：

APPLIED SURFACE SCIENCE | 2019年 / 473卷

基金：

新加坡国家研究基金会;

关键词：

Photocatalysis; Semiconductor; Optical properties; Microstructures; VISIBLE-LIGHT; PHOTOCATALYTIC ACTIVITY; BI2O3; TIO2; LUMINESCENCE; DEGRADATION; NANOPARTICLES; PERFORMANCE; FABRICATION; MORPHOLOGY;

D O I：

10.1016/j.apsusc.2018.12.165

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：

Cs-doped alpha-Bi2O3 was synthesized via a facile hydrothermal reaction. The phase formations of the samples were investigated via X-ray powder diffraction (XRD) patterns and structural refinements. The samples present well-crystalized microplates with smooth surfaces and a thickness about 300 nm. The experiments revealed that the undoped and Cs-doped alpha-Bi2O3 microplates could crystallized in a pure monoclinic phase. The band gap of alpha-Bi2O3 could be reduced via the Cs-doping in the lattices. The photocatalytic activity on photo-degradation of methylene blue (MB) was significantly improved with the Cs-doping. The effective photocatalysis was discussed on the improved visible-light response, the enhanced dispersion in the valence band composed of hybrid orbitals of Bi6s, O2p and Cs3d, and the lowered electron-hole recombination.

引用

页码：401 / 408

页数：8

共 52 条

[1]

[Anonymous], OPTICAL PROPERTIES S

[2] Self-integrated β-Bi2O3/Bi2O2.33@Bi2O2CO3 ternary composites: Formation mechanism and visible light photocatalytic activity [J].

Bian, Yuan ;

Ma, Yongjin ;

Shang, Yanyang ;

Tan, Pengfei ;

Pan, Jun .

APPLIED SURFACE SCIENCE, 2018, 430 :613-624

[3] THE LUMINESCENCE OF YTTRIA STABILIZED ZIRCONIA DOPED WITH BI2O3 [J].

BLASSE, G ;

ZHIRAN, H ;

WINNUBST, AJA ;

BURGGRAAF, AJ .

MATERIALS RESEARCH BULLETIN, 1984, 19 (08) :1057-1062

[4] Theoretical investigation of the pure and Zn-doped α and δ phases of Bi2O3 -: art. no. 205122 [J].

Carlsson, JM ;

Hellsing, B ;

Domingos, HS ;

Bristowe, PD .

PHYSICAL REVIEW B, 2002, 65 (20) :1-10

[5] Fabrication of mesh-like bismuth oxide single crystalline nanoflakes and their visible light photocatalytic activity [J].

Chen, Rui ;

Shen, Zhu-Rui ;

Wang, Hu ;

Zhou, Hui-Jing ;

Liu, Yu-Ping ;

Ding, Da-Tong ;

Chen, Tie-Hong .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (05) :2588-2596

[6] Optical and electrical properties of thermally oxidized bismuth thin films [J].

Condurache-Bota, S. ;

Tigau, N. ;

Rambu, A. P. ;

Rusu, G. G. ;

Rusu, G. I. .

APPLIED SURFACE SCIENCE, 2011, 257 (24) :10545-10550

[7] Sandwich heterostructures of antimony trioxide and bismuth trioxide films: Structural, morphological and optical analysis [J].

Condurache-Bota, Simona ;

Praisler, Mirela ;

Gavrila, Raluca ;

Tigau, Nicolae .

APPLIED SURFACE SCIENCE, 2017, 391 :59-65

[8] A simple preparation of carbon doped porous Bi2O3 with enhanced visible-light photocatalytic activity [J].

Dai, Gaopeng ;

Liu, Suqin ;

Liang, Ying .

JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 608 :44-48

[9] ELECTRONIC-STRUCTURE AND CHEMICAL BONDING IN BI2O3 [J].

EVARESTOV, RA ;

SHAPOVALOV, VO ;

VERYAZOV, VA .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1994, 183 (01) :K15-K17

[10] Hydrothermal synthesis of Sr-doped α-Bi2O3 nanosheets as highly efficient photocatalysts under visible light [J].

Faisal, M. ;

Ibrahim, Ahmed A. ;

Bouzid, Houcine ;

Al-Sayari, S. A. ;

Al-Assiri, M. S. ;

Ismail, Adel A. .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2014, 387 :69-75

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