Low-cost and efficient visible-light-driven CaMg(CO_3)_2@Ag_2CO_3 microspheres fabricated via an ion exchange route

作     者：Jian Tian Zhen Wu Zhen Liu Changlin Yu Kai Yang Lihua Zhu Weiya Huang Yang Zhou 田坚;吴榛;刘珍;余长林;杨凯;朱丽华;黄微雅;周阳

作者机构：School of Metallurgy and Chemical Engineering Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi China School of Chemistry and Environmental Engineering Wuyi University Jiangmen 529020 Guangdong China State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou University Fuzhou 350002 Fujian China 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2017年第38卷第11期

页      面：1899-1908页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China(21567008,21607064,21707055,21763011) Program of Qingjiang Excellent Young Talents,Jiangxi University of Science and Technology Program of 5511 Talents in Scientific Technological Innovation of Jiangxi Province(20165BCB18014) Academic and Technical Leaders of the Main Disciplines in Jiangxi Province(20172BCB22018) Jiangxi Province Natural Science Foundation China(20161BAB203090,20161BAB213083,20171ACB21041) 

主　　题：Hard template Ion exchange CaMg(CO3)2@Ag2CO3 microspheres Photocatalytic performance 

摘      要：CaMg(CO3)2microspheres were prepared and used as hard templates to fabricate a series of CaMg(CO3)2@Ag2CO3composite microspheres via a fast and low‐cost ion exchange *** effects of ion exchange time and temperature on the physicochemical properties and photocatalytic activities of the composite microspheres were studied through photocatalytic degradation of Acid Orange II under xenon lamp *** obtained samples were analyzed by X‐ray diffraction,scanning electron microscopy,Fourier transform infrared spectroscopy,UV‐vis diffuse reflectance spectroscopy,N2physical adsorption,and photocurrent *** CaMg(CO3)2@Ag2CO3sample with the highest activity was obtained with an ion exchange time of4h and temperature of40°*** degradation rate of Acid Orange II by this sample reached83.3%after15min of light irradiation,and the sample also performed well in phenol *** CaMg(CO3)2@Ag2CO3produced under these ion exchange conditions showed a well‐ordered hierarchical morphology with small particle sizes,which was beneficial to light absorption and the transfer of photoelectrons(e-)and holes(h+)to the catalyst ***,the separation of photogenerated carriers over the composites was greatly improved relative to bare CaMg(CO3)*** the very low content of Ag2CO3(2.56%),excellent photocatalytic performance was obtained over the CaMg(CO3)2@Ag2CO3microspheres.