Preparation, characterisation and activity evaluation of CaCO3/ZnO photocatalyst

被引：10

作者：

Chen, Shifu ^{[1
]}

Yang, Yunguang ^{[1
]}

Ji, Mingsong ^{[1
]}

Liu, Wei ^{[1
]}

机构：

[1] Huaibei Normal Univ, Dept Chem, Huaibei 235000, Anhui, Peoples R China

来源：

JOURNAL OF EXPERIMENTAL NANOSCIENCE | 2011年 / 6卷 / 03期

关键词：

photocatalyst; CaCO3; ZnO; preparation; characterisation; activity; ZNO THIN-FILMS; DEGRADATION; PROPERTY; SURFACE;

D O I：

10.1080/17458080.2010.509873

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photocatalyst CaCO3/ZnO with high activity was prepared by coprecipitation method using (NH4)(2)CO3, Zn(NO3)(2) and Ca(NO3)(2) as raw materials. The photocatalyst was characterised by X-ray powder diffraction, terephthalic acid photoluminescence probing technique (TA-PL), UV-vis diffuse reflectance spectroscopy and the fluorescence emission spectra. The photocatalytic activity of the photocatalyst was evaluated by photocatalytic oxidation of methyl orange and rhodamine B. The results showed that the photocatalytic activity of the photocatalyst was much higher than that of pure ZnO. The best mole ratio of Ca/Zn in the sample was 1 : 2, and its intensity of TA-PL was the strongest. The effect of heat treatment condition on the photocatalytic activity of the photocatalyst was investigated. The best preparation condition was about 650 degrees C for 7 h. Compared with pure ZnO, the photoabsorption wavelength range of the CaCO3/ZnO extends towards visible light and improves the utilisation of the total spectrum. The possible mechanisms of influence of CaCO3 on the photocatalytic activity of CaCO3/ZnO were also discussed.

引用

页码：324 / 336

页数：13

共 34 条

[1] Preparation, characterization, and photocatalytic performance of NdPW12O40/TiO2 composite catalyst [J].

Cai Tiejun ;

Yue Ming ;

Wang Xianwen ;

Deng Qian ;

Peng Zhenshan ;

Zhou Wenhui .

CHINESE JOURNAL OF CATALYSIS, 2007, 28 (01) :10-16

[2] Degradation pathways and efficiencies of acid blue 1 by photocatalytic reaction with ZnO nanopowder [J].

Chen, Chiing-Chang ;

Fan, Huan-Jung ;

Jan, Jeng-Lyan .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (31) :11962-11972

[3]

[陈桂光 Chen Guiguang], 2005, [过程工程学报, The chinese journal of process engineering], V5, P66

[4] Preparation and activity evaluation of p-n junction photocatalyst NiO/TiO2 [J].

Chen Shifu ;

Zhang Sujuan ;

Liu Wei ;

Zhao Wei .

JOURNAL OF HAZARDOUS MATERIALS, 2008, 155 (1-2) :320-326

[5] The preparation of coupled SnO2/TiO2 photocatalyst by ball milling [J].

Chen Shifu ;

Chen Lei ;

Gao Shen ;

Cao Gengyu .

MATERIALS CHEMISTRY AND PHYSICS, 2006, 98 (01) :116-120

[6] Preparation, characterization and activity evaluation of p-n junction photocatalyst p-CaFe2O4/n-ZnO [J].

Chen Shifu ;

Zhao Wei ;

Liu Wei ;

Zhang Huaye ;

Yu Xiaoling .

CHEMICAL ENGINEERING JOURNAL, 2009, 155 (1-2) :466-473

[7] Preparation, characterization and activity evaluation of p-n junction photocatalyst p-NiO/n-ZnO [J].

Chen Shifu ;

Zhao Wei ;

Liu Wei ;

Zhang Sujuan .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2009, 50 (03) :387-396

[8] Preparation, characterization and activity evaluation of p-n junction photocatalyst p-ZnO/n-TiO2 [J].

Chen Shifu ;

Zhao Wei ;

Liu Wei ;

Zhang Sujuan .

APPLIED SURFACE SCIENCE, 2008, 255 (05) :2478-2484

[9] Theory of carbon doping of titanium dioxide [J].

Di Valentin, C ;

Pacchioni, G ;

Selloni, A .

CHEMISTRY OF MATERIALS, 2005, 17 (26) :6656-6665

[10] Electrical characterisation of phosphorus-doped ZnO thin films grown by pulsed laser deposition [J].

Doggett, B. ;

Chakrabarti, S. ;

O'Haire, R. ;

Meaney, A. ;

McGlynn, E. ;

Henry, M. O. ;

Mosnier, J. P. .

SUPERLATTICES AND MICROSTRUCTURES, 2007, 42 (1-6) :74-78

← 1 2 3 4 →