Preparation of carbon quantum dots/Bi12O17Cl2 semiconductor composite and its enhanced photocatalytic oxygen evolution performance

被引：8

作者：

Cui, Yumin ^{[1
]}

Hu, Dandan ^{[1
]}

Wang, Shouyue ^{[1
]}

Liu, Junlong ^{[1
]}

Shi, Ruijuan ^{[1
]}

Wang, Hongtao ^{[1
]}

机构：

[1] Fuyang Normal Coll, Sch Chem & Mat Engn, Anhui Prov Key Lab Degradat & Monitoring Pollut En, Fuyang 236037, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2023年 / 18卷 / 04期

关键词：

Carbon quantum dots (CQDs); Photocatalytic water splitting; Oxygen evolution; LIGHT; HETEROJUNCTION; FABRICATION; EFFICIENT; PHOTOLUMINESCENCE; DEGRADATION; DOTS;

D O I：

10.1016/j.ijoes.2023.100047

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel carbon quantum dots (CQDs)/Bi12O17Cl2 semiconductor composite was synthesized by a simple room-temperature precipitation method, in which the strong interaction between CQDs and Bi12O17Cl2 formed, and it was characterized by XRD, Raman spectroscopy, TEM, XPS, UV-vis DRS, N2 adsorption/desorption and electrochemical measurements. The performance of the CQDs/Bi12O17Cl2 composite for photocatalytic oxygen evolution from water splitting was studied under visible light irradiation at room temperature. The results indicated that the rate of oxygen evolution increased firstly and then decreased with the increase of CQDs content. A maximum oxygen evolution rate of 677 & mu;mol h-1 g-1 was achieved for the CQDs/Bi12O17Cl2 composite in which 5 mL CQDs solution was dispersed. Compared with the single Bi12O17Cl2, the CQDs/Bi12O17Cl2 composites with a relatively high specific surface area and large pore volume displayed much higher charge separation efficiency under visible light. The excellent photocatalytic oxygen evolution performance of the CQDs/Bi12O17Cl2 semiconductor composites is attributed to its strong visible-light absorption capability, high charge separation efficiency, and the more positive valence band position.

引用

页数：8

共 37 条

[1] BiOI/Bi12O17Cl2: A novel heterojunction composite with outstanding photocatalytic and photoelectric performances [J].

Bi, Changjiang ;

Cao, Jing ;

Lin, Haili ;

Wang, Yunjian ;

Chen, Shifu .

MATERIALS LETTERS, 2016, 166 :267-270

[2] In-situ constructing Bi2S3 nanocrystals-modified Bi12O17Cl2 nanosheets with features of rich oxygen vacancies and reinforced photocatalytic performance [J].

Chang, Fei ;

Yan, Wenjing ;

Lei, Bin ;

Zhang, Xiaoya ;

Chen, Hongyu ;

Hu, Xuefeng ;

Liu, Xiaoqi .

SEPARATION AND PURIFICATION TECHNOLOGY, 2020, 235

[3] In-situ establishment of binary composites α-Fe2O3/Bi12O17Cl2 with both photocatalytic and photo-Fenton features [J].

Chang, Fei ;

Wu, Feiyan ;

Zheng, Jiaojiao ;

Cheng, Wenbo ;

Yan, Wenjing ;

Deng, Baoqing ;

Hu, Xuefeng .

CHEMOSPHERE, 2018, 210 :257-266

[4] Ag/Bi12O17Cl2 composite: A case study of visible-light-driven plasmonic photocatalyst [J].

Chang, Fei ;

Wang, Xiaofang ;

Luo, Jieru ;

Wang, Jie ;

Xie, Yunchao ;

Deng, Baoqing ;

Hu, Xuefeng .

MOLECULAR CATALYSIS, 2017, 427 :45-53

[5] Photoluminescence and photocatalytic properties of BiOCl and Bi24O31Cl10 nanostructures synthesized by electrolytic corrosion of metal Bi [J].

Chen, G. ;

Fang, G. L. ;

Tang, G. D. .

MATERIALS RESEARCH BULLETIN, 2013, 48 (03) :1256-1261

[6] Built-in electric field for photocatalytic overall water splitting through a TiO2/BiOBr P-N heterojunction [J].

Chi, Qianqian ;

Zhu, Genping ;

Jia, Dongmei ;

Ye, Wei ;

Wang, Yikang ;

Wang, Jun ;

Tao, Ting ;

Xu, Fuchun ;

Jia, Gan ;

Li, Wenhao ;

Gao, Peng .

NANOSCALE, 2021, 13 (08) :4496-4504

[7] Construction of atomic-level charge transfer channel in Bi12O17Cl2/MXene heterojunctions for improved visible-light photocatalytic performance [J].

Cui, Song-Song ;

Liu, Xuan ;

Shi, Yin-Biao ;

Ding, Ming-Ye ;

Yang, Xiao-Fei .

RARE METALS, 2022, 41 (07) :2405-2416

[8] TiO2 nanobelts with anatase/rutile heterophase junctions for highly efficient photocatalytic overall water splitting [J].

Ding, Lei ;

Yang, Shaorui ;

Liang, Zhangqian ;

Qian, Xiu ;

Chen, Xiaoyue ;

Cui, Hongzhi ;

Tian, Jian .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2020, 567 :181-189

[9] Novel I-doped Bi12O17Cl2 photocatalysts with enhanced photocatalytic activity for contaminants removal [J].

Guo, Minna ;

He, Heng ;

Cao, Jing ;

Lin, Haili ;

Chen, Shifu .

MATERIALS RESEARCH BULLETIN, 2019, 112 :205-212

[10] Carbon quantum dots-modified Z-scheme Bi12O17Cl2/NiAl-LDH for significantly boosting photocatalytic CO2 reduction [J].

Guo, Rui-Tang ;

Bi, Zhe-xu ;

Lin, Zhi-dong ;

Hu, Xing ;

Wang, Juan ;

Chen, Xin ;

Pan, Wei-guo .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2022, 627 :343-354

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