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材料工程  2020, Vol. 48 Issue (11): 25-31    DOI: 10.11868/j.issn.1001-4381.2019.000705
  光催化专栏 本期目录 | 过刊浏览 | 高级检索 |
米粒状CaIn2O4/In2O3的静电纺丝法制备及其光催化性能
张钦库, 胡大伟, 闫翻辽, 左安志, 赵强
榆林学院 建筑工程学院, 陕西 榆林 719000
Structural and photocatalytic properties of rice granular CaIn2O4/In2O3 fabricated by electrospinning
ZHANG Qin-ku, HU Da-wei, YAN Fan-liao, ZUO An-zhi, ZHAO Qiang
School of Civil Engineering, Yulin University, Yulin 719000, Shaanxi, China
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摘要 以硝酸铟和硝酸钙为原料、聚乙烯吡咯烷酮为模板、乙醇为溶剂,采用静电纺丝法成功制备米粒状CaIn2O4/In2O3复合光催化剂。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、能谱分析(EDS)、透射电子显微镜(TEM)、紫外可见漫反射光谱(UV-vis DRS)和N2吸附-脱附曲线对制备的样品进行表征。探讨溶液的pH值和亚甲基蓝(MB)起始浓度对CaIn2O4/In2O3光催化活性的影响。结果表明:CaIn2O4/In2O3复合物由正交相CaIn2O4和立方相In2O3组成,粒径约为(650±140)nm,禁带宽度为3.48 eV,比表面积为17.2 m2·g-1。模拟太阳光照射120 min,对MB的降解率达92%,其降解过程服从一级动力学模型,且具有良好的循环使用稳定性。CaIn2O4与In2O3的耦合使得光催化剂的光生载流子得到有效分离,从而具备优良的光催化活性。
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张钦库
胡大伟
闫翻辽
左安志
赵强
关键词 CaIn2O4/In2O3光催化降解MB模拟太阳光    
Abstract:The rice granular CaIn2O4/In2O3was successfully synthesized via the electrospinning method using calcium nitrate and indium nitrate as the raw materials, polyvinylpyrrolidone (PVP-K30) as a template and ethanol as a solvent. The samples were characterized by X-ray diffraction (XRD),scanning electron microscope (SEM),energy spectrum analysis (EDS),transmission electron microscopy (TEM),UV-vis diffuse reflectance spectroscopy (UV-vis DRS) and N2 adsorption-desorption isotherm. The effect of pH value and the initial concentration of methylene blue(MB) on the photocatalytic performance of CaIn2O4/In2O3 was discussed. The results show that the composites consist of orthorhombic CaIn2O4 and cubic In2O3, with particle size of (650±140) nm, energy gap of 3.48 eV and specific surface area of 17.2 m2·g-1. The degradation rate of MB reaches 92% when it is irradiated by simulated sunlight for 120 min and the photocatalysis degradation process fits the first-order kinetic model. Meanwhile, CaIn2O4/In2O3 has an excellent reusability and stability. The coupling of CaIn2O4 and In2O3 enables the photogenerated carriers to be effectively separated and therefore produces CaIn2O4/In2O3 composites with excellent photocatalytic performance.
Key wordsCaIn2O4/In2O3    photocatalysis    degradation    MB    simulated sunlight
收稿日期: 2019-10-31      出版日期: 2020-11-20
中图分类号:  O643  
基金资助: 
通讯作者: 张钦库(1983-),男,副教授,博士,研究方向:水处理纳米材料,联系地址:陕西省榆林市榆阳区崇文路7号榆林学院建筑工程学院(719000),E-mail:zhangqk24@163.com     E-mail: zhangqk24@163.com
引用本文:   
张钦库, 胡大伟, 闫翻辽, 左安志, 赵强. 米粒状CaIn2O4/In2O3的静电纺丝法制备及其光催化性能[J]. 材料工程, 2020, 48(11): 25-31.
ZHANG Qin-ku, HU Da-wei, YAN Fan-liao, ZUO An-zhi, ZHAO Qiang. Structural and photocatalytic properties of rice granular CaIn2O4/In2O3 fabricated by electrospinning. Journal of Materials Engineering, 2020, 48(11): 25-31.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000705      或      http://jme.biam.ac.cn/CN/Y2020/V48/I11/25
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