Morphology, photoluminescence and gas sensing of Ce-doped ZnO microspheres

被引：20

作者：

Li, Yan ^{[1
]}

Liu, Jin-cheng ^{[1
]}

Lian, Xiao-xue ^{[1
]}

Lu, Tan ^{[1
]}

Zhao, Fang-xian ^{[1
]}

机构：

[1] Civil Aviat Univ China, Coll Sci, Tianjin 300300, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2015年 / 25卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Ce-doping; ZnO; morphology; microspheres; gas sensing; photoluminescence; PHOTOCATALYTIC ACTIVITY; NANOSHEETS; EMISSION; NANORODS; GROWTH; FILMS; OXIDES; SOL;

D O I：

10.1016/S1003-6326(15)64006-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Ce-doped ZnO microspheres were solvothermally prepared, and their microstructure, morphology, photoluminescence, and gas sensing were investigated by X-ray diffractometer, field emission scanning electron microscopy, transmission electron microscopy, fluorescence spectrometer and gas sensing analysis system. The results showed that the Ce-doped ZnO microspheres were composed of numerous nanorods with a diameter of 70 nm and a wurtzite structure. Ce-doping could cause a morphological transition from loose nanorods assembly to a tightly assembly in the microspheres. Compared with pure ZnO, the photoluminescence of the Ce-doped microspheres showed red-shifted UV emission and an enhanced blue emission. Particularly, the Ce-doped ZnO sensors exhibited much higher sensitivity and selectivity to ethanol than that of pure ZnO sensor at 320 degrees C. The ZnO microspheres doped with 6% Ce (mole fraction) exhibited the highest sensitivity (about 30) with rapid response (2 s) and recovery time (16 s) to 50x10(-6) ethanol gas.

引用

页码：3657 / 3663

页数：7

共 33 条

[1] Photocatalytic degradation of 2,4,6-trichlorophenol using lanthanum doped ZnO in aqueous suspension [J].

Anandan, S. ;

Vinu, A. ;

Mori, T. ;

Gokulakrishnan, N. ;

Srinivasu, P. ;

Murugesan, V. ;

Ariga, K. .

CATALYSIS COMMUNICATIONS, 2007, 8 (09) :1377-1382

[2] Synthesis and defect-related emission of ZnO based light emitting device with homo- and heterostructure [J].

Bian, Jiming ;

Liu, Weifeng ;

Sun, Jingchang ;

Liang, Hongwei .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2007, 184 (1-3) :451-454

[3] Ce-doped ZnO nanorods based low operation temperature NO2 gas sensors [J].

Chang, Chi-Jung ;

Lin, Chang-Yi ;

Chen, Jem-Kun ;

Hsu, Mu-Hsiang .

CERAMICS INTERNATIONAL, 2014, 40 (07) :10867-10875

[4] The dye adsorption optimization of ZnO nanorod-based dye-sensitized solar cells [J].

Fang, Xiang ;

Li, Yan ;

Zhang, Shuai ;

Bai, Li ;

Yuan, Ningyi ;

Ding, Jianning .

SOLAR ENERGY, 2014, 105 :14-19

[5] Interaction between thin-film tin oxide gas sensor and five organic vapors [J].

Gong, H ;

Wang, YJ ;

Teo, SC ;

Huang, L .

SENSORS AND ACTUATORS B-CHEMICAL, 1999, 54 (03) :232-235

[6] Ce-induced single-crystalline hierarchical zinc oxide nanobrushes [J].

Gong, He-Chun ;

Zhong, Jia-Fu ;

Zhou, Shao-Min ;

Zhang, Bin ;

Li, Zhao-Han ;

Du, Zu-Liang .

SUPERLATTICES AND MICROSTRUCTURES, 2008, 44 (02) :183-190

[7] Solution-grown zinc oxide nanowires [J].

Greene, Lori E. ;

Yuhas, Benjamin D. ;

Law, Matt ;

Zitoun, David ;

Yang, Peidong .

INORGANIC CHEMISTRY, 2006, 45 (19) :7535-7543

[8] Synthesis and conductive properties of Ga-doped ZnO nanosheets by the hydrothermal method [J].

Guo, Jing ;

Zheng, Ji ;

Song, Xinzhao ;

Sun, Kun .

MATERIALS LETTERS, 2013, 97 :34-36

[9] Gas sensing properties of hydrothermally grown ZnO nanorods with different aspect ratios [J].

Gurav, K. V. ;

Gang, M. G. ;

Shin, S. W. ;

Patil, U. M. ;

Deshmukh, P. R. ;

Agawane, G. L. ;

Suryawanshi, M. P. ;

Pawar, S. M. ;

Patil, P. S. ;

Lokhande, C. D. ;

Kim, J. H. .

SENSORS AND ACTUATORS B-CHEMICAL, 2014, 190 :439-445

[10] Interplay between O2 and SnO2:: Oxygen ionosorption and spectroscopic evidence for adsorbed oxygen [J].

Gurlo, Alexander .

CHEMPHYSCHEM, 2006, 7 (10) :2041-2052

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