Polyaniline-Decorated {001} Facets of Bi2O2CO3 Nanosheets: In Situ Oxygen Vacancy Formation and Enhanced Visible Light Photocatalytic Activity

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	Polyaniline-Decorated {001} Facets of Bi2O2CO3 Nanosheets: In Situ Oxygen Vacancy Formation and Enhanced Visible Light Photocatalytic Activity
	Zhao, ZY; Zhou, Y; Wang, F; Zhang, KH; Yu, S; Cao, K
刊名	ACS APPLIED MATERIALS & INTERFACES
	2015
卷号	7 期号:1 页码:730—737
关键词	SINGLE-CRYSTALLINE NANOSHEETS HYDROTHERMAL SYNTHESIS COMPOSITE BIOCL MICROSPHERES OXIDATION GRAPHENE BISMUTH WATER TIO2
英文摘要	Polyaniline (PANI)-decorated {001} facets of Bi2O2CO3 nanosheets were synthesized by a low-temperature chemical method. We demonstrate that the strong interfacial interactions between Bi2O2CO3 {001} facets and PANI could promote in situ formation of oxygen vacancy at the interface confirmed by both density functional theory calculations and electron spin resonance experiments, which is due to the high oxygen density characteristic of Bi2O2CO3 {001} facets. In addition, such interfacial interaction also leads to a 0.38 eV positive shifting of the valence band of Bi2O2CO3. Importantly, the decorated PANI can stabilize these interfacial oxygen vacancies. Therefore, the migration and separation of photogenerated carriers have been improved significantly evidenced by electrochemical impedance spectroscopy, photoluminescence, and nanosecond time-resolved fluorescence-decay spectra, resulting in a 4.5 times higher activity toward photodegradation of Rhodamine B and a 6 times higher photocurrent density compared to their corresponding bare Bi2O2CO3. The finding of the in situ oxygen vacancy formation at the interface could provide some hints for the deep understanding of the interactions between PANI and crystal facets of semiconductors to develop highly efficient photocatalysts.
收录类别	SCI
语种	英语
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/24534]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Zhao, ZY,Zhou, Y,Wang, F,et al. Polyaniline-Decorated {001} Facets of Bi2O2CO3 Nanosheets: In Situ Oxygen Vacancy Formation and Enhanced Visible Light Photocatalytic Activity[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(1):730—737.
APA	Zhao, ZY,Zhou, Y,Wang, F,Zhang, KH,Yu, S,&Cao, K.(2015).Polyaniline-Decorated {001} Facets of Bi2O2CO3 Nanosheets: In Situ Oxygen Vacancy Formation and Enhanced Visible Light Photocatalytic Activity.ACS APPLIED MATERIALS & INTERFACES,7(1),730—737.
MLA	Zhao, ZY,et al."Polyaniline-Decorated {001} Facets of Bi2O2CO3 Nanosheets: In Situ Oxygen Vacancy Formation and Enhanced Visible Light Photocatalytic Activity".ACS APPLIED MATERIALS & INTERFACES 7.1(2015):730—737.