Crystallinity-dependent substitutional nitrogen doping in ZnO and its improved visible light photocatalytic activity

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	Crystallinity-dependent substitutional nitrogen doping in ZnO and its improved visible light photocatalytic activity
	Z. B. Yu; L. C. Yin; Y. P. Xie; G. Liu; X. L. Ma; H. M. Cheng
	2013
发表期刊	Journal of Colloid and Interface Science
ISSN	0021-9797
卷号	400 页码:18-23
摘要	Increasing visible light absorption of wide-bandgap photocatalysts (for example, ZnO and TiO2) plays a pivotal role in improving their photocatalytic activity. In this work, we show that substitutional nitrogen doping can be realized in semi-crystalline zinc oxide (ZnO) nanoparticles but fails for highly crystalline ZnO by heating the ZnO at a temperature of 400 degrees C in gaseous ammonia atmosphere. The results suggest that substitutional nitrogen for lattice oxygen is strongly dependent on the crystallinity of ZnO. The nitrogen doped ZnO obtained shows an improved visible light photocatalytic activity in the degradation of organic dyes due to its increased visible light absorption. The origin of the increased visible light absorption is theoretically attributed to the formed N 2p localized states in the bandgap. (C) 2013 Elsevier Inc. All rights reserved.
部门归属	[yu, zongbao ; yin, li-chang ; xie, yingpeng ; liu, gang ; ma, xiuliang ; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; liu, g (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; gangliu@imr.ac.cn
关键词	Zno Doping Photocatalysts Visible Light Augmented-wave Method Tio2 Nanoparticles Optical-properties Solar-cells Doped Zno Anatase Nanocrystals
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71655
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. B. Yu,L. C. Yin,Y. P. Xie,et al. Crystallinity-dependent substitutional nitrogen doping in ZnO and its improved visible light photocatalytic activity[J]. Journal of Colloid and Interface Science,2013,400:18-23.
APA	Z. B. Yu,L. C. Yin,Y. P. Xie,G. Liu,X. L. Ma,&H. M. Cheng.(2013).Crystallinity-dependent substitutional nitrogen doping in ZnO and its improved visible light photocatalytic activity.Journal of Colloid and Interface Science,400,18-23.
MLA	Z. B. Yu,et al."Crystallinity-dependent substitutional nitrogen doping in ZnO and its improved visible light photocatalytic activity".Journal of Colloid and Interface Science 400(2013):18-23.