Enhancing catalytic toluene oxidation over MnO2@Co3O4 by constructing a coupled interface

作     者：Quanming Ren Shengpeng Mo Jie Fan Zhentao Feng Mingyuan Zhang Peirong Chen Jiajian Gao Mingli Fu Limin Chen Junliang Wu Daiqi Ye 任泉明;莫胜鹏;樊洁;冯振涛;张明远;陈培榕;高加俭;付名利;陈礼敏;吴军良;叶代启

作者机构：School of Environment and EnergySouth China University of TechnologyGuangzhou 510006GuangdongChina National Engineering Laboratory for VOCs Pollution Control Technology and EquipmentSouth China University of TechnologyGuangzhou 510006GuangdongChina Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlGuangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency DisposalSouth China University of TechnologyGuangzhou 510006GuangdongChina School of Chemical and Biomedical EngineeringNanyang Technological University62 Nanyang DriveSingapore 637459Singapore 

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

年 卷 期：2020年第41卷第12期

页      面：1873-1883页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：国家重点研发计划(2017YFC0212805,2016YFC0204200) 国家自然科学基金(51878292,51878293,51678245) 广东省自然科学基金(2020A1515010929,2015B020236002,2014A030310431,2016A030311003) 广州市科技计划(201804020026) 广东省科技计划(2017B090901049) 

主　　题：MnO2@Co3O4 Toluene oxidation Synergistic effect Coupled interface In situ DRIFTS 

摘      要：Herein,a bottom-down design is presented to successfully fabricate ZIF-derived Co3O4,grown in situ on a one-dimensional(1D)α-MnO2 material,denoted as α-MnO2@*** synergistic effect derived from the coupled interface constructed betweenα-MnO2 and Co3O4 is responsible for the enhanced catalytic *** resultantα-MnO2@Co3O4 catalyst exhibits excellent catalytic activity at a T90%(temperature required to achieve a toluene conversion of 90%)of approximately 229℃,which is 47 and 28℃ lower than those of the pureα-MnO2 nanowire and Co3O4-b obtained via pyrolysis of ZIF-67,*** activity is attributed to the increase in the number of surface-adsorbed oxygen species,which accelerate the oxygen mobility and enhance the redox pairs of Mn^4+/Mn^3+ and Co^2+/Co^3+.Moreover,the result of in situ diffuse reflectance infrared Fourier transform spectroscopy suggests that the gaseous oxygen could be more easily activated to adsorbed oxygen species on the surface of α-MnO2@Co3O4 than on that of α-*** catalytic reaction route of toluene oxidation over theα-MnO2@Co3O4 catalyst is as follows:toluene→benzoate species→alkanes containing oxygen functional group→CO2 and *** addition,the α-MnO2@Co3O4 catalyst shows excellent stability and good water resistance for toluene ***,the preparation method can be extended to other 1D MnO2 materials.A new strategy for the development of high-performance catalysts of practical significance is provided.