|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
|Source Publication||Journal of Colloid and Interface Science
|Abstract||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.|
; 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.
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.
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.
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.
|Files in This Item:||
||There are no files associated with this item.
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.