Nanosphere of Pb-modified bismuth-based borate photocatalysts

被引：5
|
作者：
Yang, Jie [1 ,2 ]
Pan, Xiaolong [1 ,2 ]
Quhe, Ruge [1 ,2 ]
Bi, Ke [1 ,2 ]
Lin, Sen [1 ,2 ]
Liang, Ce [1 ,2 ]
Yao, Chongchong [1 ,2 ]
Du, Yinxiao [3 ]
Liu, Jun [4 ]
Fan, Dongyu [1 ,2 ]
Yang, Hujiang [1 ,2 ]
Wang, Yonggang [1 ,2 ]
Lei, Ming [1 ,2 ]
机构：
[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
[2] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China
[3] Zhengzhou Inst Aeronaut Ind Management, Dept Math & Phys, Zhengzhou 450015, Peoples R China
[4] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
来源：
MICRO & NANO LETTERS | 2017年 / 12卷 / 07期
基金：
中国国家自然科学基金;
关键词：
catalysts; photodissociation; bismuth compounds; lead compounds; X-ray diffraction; ultraviolet spectra; visible spectra; scanning electron microscopy; transmission electron microscopy; X-ray photoelectron spectra; dyes; impurities; electron-hole recombination; doping profiles; nanofabrication; Pb-modified bismuth-based borate photocatalysts; nanosphere synthesis; one-step hydrothermal route; ultraviolet-vis diffuse reflectance; UV-vis diffuse reflectance; X-ray photoelectron spectroscopy; photocatalytic activity; rhodamine B decomposition; UV-light irradiation; Pb impurity; impurity energy level; electron-hole pairs; electronic properties; first-principle calculations; photocatalytic performance; doping concentration; Bi2-xPbxO2(BO2OH); VISIBLE-LIGHT PHOTOCATALYSIS; ELECTRONIC-STRUCTURE; FACILE ROUTE; 1ST-PRINCIPLES; MICROSPHERES; PERFORMANCE; EFFICIENT; BEHAVIOR; NANOSHEETS; BI2O2CO3;
D O I：
10.1049/mnl.2016.0762
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Bi2-xPbxO2(BO2OH) nanospheres are synthesised by means of one-step hydrothermal route by embedding Pb2+ to Bi2O22+ layers. The obtained materials are characterised by X-ray diffraction, ultraviolet (UV)-vis diffuse reflectance, scanning electron microscope, transmission electron microscopy and X-ray photoelectron spectroscopy. Photocatalytic activity is measured by decomposition of rhodamine B under UV-light irradiation. Photocatalytic performance is boosted after inducing Pb impurity into pure Bi2O2(BO2OH) lattice, because the impurity energy level could capture the holes and restrain the recombination of electron-hole pairs. Electronic properties of the fabricated nanospheres are investigated via first-principle calculations. The highest photocatalytic performance is found in the modified Bi2O2(BO2OH) with a doping concentration of Bi/Pb = 1.5/0.5, which outperformed the pure even the commercial P25.
引用
收藏
页码：430 / 434
页数：5
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