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

被引：66

作者：

Yu, Zongbao ^{[1
]}

Yin, Li-Chang ^{[1
]}

Xie, Yingpeng ^{[1
]}

Liu, Gang ^{[1
]}

Ma, Xiuliang ^{[1
]}

Cheng, Hui-Ming ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2013年 / 400卷

关键词：

ZnO; Doping; Photocatalysts; Visible light; OPTICAL-PROPERTIES; DOPED ZNO;

D O I：

10.1016/j.jcis.2013.02.046

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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.

引用

页码：18 / 23

页数：6

共 30 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[2] Influence of nitrogen doping on the defect formation and surface properties of TiO2 rutile and anatase -: art. no. 026103 [J].

Batzill, M ;

Morales, EH ;

Diebold, U .

PHYSICAL REVIEW LETTERS, 2006, 96 (02)

[3] IMPROVED TETRAHEDRON METHOD FOR BRILLOUIN-ZONE INTEGRATIONS [J].

BLOCHL, PE ;

JEPSEN, O ;

ANDERSEN, OK .

PHYSICAL REVIEW B, 1994, 49 (23) :16223-16233

[4] Enhanced nitrogen doping in TiO2 nanoparticles [J].

Burda, C ;

Lou, YB ;

Chen, XB ;

Samia, ACS ;

Stout, J ;

Gole, JL .

NANO LETTERS, 2003, 3 (08) :1049-1051

[5] Semiconductor-mediated photodegradation of pollutants under visible-light irradiation [J].

Chen, Chuncheng ;

Ma, Wanhong ;

Zhao, Jincai .

CHEMICAL SOCIETY REVIEWS, 2010, 39 (11) :4206-4219

[6] Titanium dioxide nanomaterials: Synthesis, properties, modifications, and applications [J].

Chen, Xiaobo ;

Mao, Samuel S. .

CHEMICAL REVIEWS, 2007, 107 (07) :2891-2959

[7] Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals [J].

Chen, Xiaobo ;

Liu, Lei ;

Yu, Peter Y. ;

Mao, Samuel S. .

SCIENCE, 2011, 331 (6018) :746-750

[8] Direct observation of nitrogen location in molecular beam epitaxy grown nitrogen-doped ZnO [J].

Fons, P ;

Tampo, H ;

Kolobov, AV ;

Ohkubo, M ;

Niki, S ;

Tominaga, J ;

Carboni, R ;

Boscherini, F ;

Friedrich, S .

PHYSICAL REVIEW LETTERS, 2006, 96 (04)

[9] Structural, electrical and optical properties of zinc nitride thin films prepared by reactive rf magnetron sputtering [J].

Futsuhara, M ;

Yoshioka, K ;

Takai, O .

THIN SOLID FILMS, 1998, 322 (1-2) :274-281

[10] ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS [J].

HOFFMANN, MR ;

MARTIN, ST ;

CHOI, WY ;

BAHNEMANN, DW .

CHEMICAL REVIEWS, 1995, 95 (01) :69-96

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