Preparation and photocatalytic properties of hollow spheres-like Zn-doped CuO/CuAl2O4 composite photocatalysts

被引：0
|
作者：
Li, Xiao-Yan [1 ,2 ]
Yan, Jian-Hui [1 ,2 ]
Zhang, Li [1 ,2 ]
Zhou, Ming-Jie [2 ]
Liu, You-Nian [1 ]
机构：
[1] College of Chemistry and Chemical Engineering, Central South University, Changsha
[2] School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang
来源：
Wuji Cailiao Xuebao/Journal of Inorganic Materials | 2014年 / 29卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Degradation; Hollow sphere; Hydrothermal process; Photocatalysis; Zn-CuO/CuAl[!sub]2[!/sub]O[!sub]4[!/sub;
D O I：
10.15541/jim20140008
中图分类号：
学科分类号：
摘要：
Zn-doped CuO/CuAl2O4 composite hollow spheres with high specific surface area were synthesized by hydrothermal method, using glucose as template and Zn(NO3)2·6H2O, Cu(NO3)2·3H2O, Al(NO3)3·9H2O as raw materials. The samples were characterized by XRD, SEM, HRTEM, BET, DRS and PL spectra. The results showed that Zn- doped CuO/CuAl2O4 composites possessed hollow microspheres shape with specific surface area up to 214.97 m2/g and diameter of about 2 μm after calcined at 600℃. The Zn doped photocatalysts exhibited enhanced absorption intensity, decreased electron-hole recombination. Further photocatalytic activities of the samples were greatly increased. The influences of calcination temperature and Zn doping content on photocatalytic activities of the samples were investigated by measuring the degradation rate of methyl orange (MO) under simulated sunlight irradiation. The sample doped with 0.5wt% Zn which was calcined at 600℃ showed the highest efficiency. Under visible light irradiation for 60 min, the decolorizing efficiency of 25 mg/L MO by 0.5 g/L photocatalyst reached 97%.
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页码：1055 / 1060
页数：5
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共 22 条
  • [1] Li F.H., Lin H., Li J.F., Et al., Influence of LiF on the infrared transmissivity of magnesia alumina spinel transparent ceramics, Journal of Inorganic Materials, 27, 4, pp. 417-421, (2012)
  • [2] Torkian L., Amini M.M., Bahrami Z., Synthesis of nano crystalline MgAl<sub>2</sub>O<sub>4</sub> spinel powder by microwave assisted combustion, Journal of Inorganic Materials, 26, 5, pp. 550-554, (2011)
  • [3] Bayal N., Jeevanandam P., Synthesis of metal aluminate nanoparticles by Sol-Gel method and studies on their reactivity, 516, pp. 27-32, (2012)
  • [4] Naderi M., Shamirian A., Edrisi M., Synthesis, characterization and photocatalytic properties of nanoparticles CuAl<sub>2</sub>O<sub>4</sub> by pechini method using taguchi statistical design, 58, 2, pp. 557-563, (2011)
  • [5] Edrisi M., Tajik S., Soleymani M., Synthesis of CuAl<sub>2</sub>O<sub>4</sub> nanoparticles by mixed chelates thermolysis and homogeneous precipitation using solubility difference reactions
  • [6] taguchi optimization and photocatalytic application, Journal of Materials Science: Materials in Electronics, 24, 10, pp. 3914-3920, (2013)
  • [7] Liang C.X., Li X.Y., Qu Z.P., Et al., The role of copper species on Cu/γ-Al<sub>2</sub>O<sub>3</sub> catalysts for NH<sub>3</sub>-SCO reaction, Applied Surface Science, 258, 8, pp. 3738-3743, (2012)
  • [8] Shang H.X., Tian Y., Wang X.T., Et al., Photocatalytic H<sub>2</sub> evolution from glycerol solution over Bi<sup>3+</sup>-doped TiO<sub>2</sub> nanoparticles, Journal of Inorganic Materials, 27, 12, pp. 1283-1288, (2012)
  • [9] Yin J., Zang Y.S., Yue C., Et al., Ag nanoparticle/ZnO hollow nanosphere arrays: large scale synthesis and surface plasmon resonance effect induced Raman scattering enhancement, 22, 16, pp. 7902-7909, (2012)
  • [10] Zhao G., Liu S.W., Lu Q.F., Synthesis of TiO<sub>2</sub>/Bi<sub>2</sub>WO<sub>6</sub> nanofibers with electrospinning technique for photocatalytic methyl blue degradation, 66, 3, pp. 406-412, (2013)
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