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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
Source PublicationJournal of Colloid and Interface Science
ISSN0021-9797
Volume400Pages:18-23
AbstractIncreasing 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.
description.department[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
KeywordZno Doping Photocatalysts Visible Light Augmented-wave Method Tio2 Nanoparticles Optical-properties Solar-cells Doped Zno Anatase Nanocrystals
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71655
Collection中国科学院金属研究所
Recommended Citation
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.
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