期刊
ACS APPLIED MATERIALS & INTERFACES
卷 6, 期 14, 页码 11698-11705出版社
AMER CHEMICAL SOC
DOI: 10.1021/am502481z
关键词
Bi2O2CO3; Ag2O; Ag2O/Bi2O2CO3; photocatalytic activity; p-n heterojunctions; visible light
资金
- National Natural Science Foundation of China [21371121, 21331004]
- Shanghai Chenguang-Project [13CG10]
- Nano-Project [12 nm0504300]
- Minhang District Developing Project
Ag2O/Bi2O2CO3 p-n heterojunctions are prepared with commercial Bi2O2CO3 as precursor via a simple photosynthesis process. The obtained Ag2O/Bi2O2CO3 p-n heterojunctions show higher photo-catalytic activity than that of pure n-Bi2O2CO3, and the obtained Ag2O/Bi2O2CO3 (AB-4) heterojunction exhibits the best photocatalytic activity under visible light (lambda > 400 nm), with which Rhodamine B, methyl blue and methyl orange can be completely degraded within 12 min. Photoluminescent spectra and photoelectrochemical measurement further indicate that the Ag2O/Bi2O2CO3 p-n heterojunctions greatly enhance the charge generation and suppress the charge recombination of photogenerated electron-hole pairs, which would be beneficial to improve their photocatalytic activity.
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