摘要
Single-atom catalysts(SACs)have attracted extensive attention in the field of heterogeneous catalysis.However,the fabrication of SACs with high loading and hightemperature stability remains a grand challenge,especially on oxide supports.In this work,we have demonstrated that through strong covalent metal-support interaction,highloading and thermally stable single-atom Pt catalysts can be readily prepared by using Fe modified spinel as support.Better catalytic performance in N2O decomposition reaction is obtained on such SACs than their nanocatalyst counterpart and low-surface-area Fe2O3 supported Pt SACs.This work provides a strategy for the fabrication of high-loading and thermally stable SACs for applications at high temperatures.
近年来,单原子催化剂(SACs)在非均相催化领域引起了广泛的关注.然而,制备高负载量和高热稳定的单原子催化剂(特别是在以氧化物作为载体的情况下)仍然是巨大的挑战.在本工作中,我们证明通过强共价金属-载体相互作用(CMSI),使用铁改性的尖晶石作为载体,可制得高负载和高温热稳定的Pt单原子催化剂.对于N2O分解反应,此类单原子催化剂催化性能优于其相应的纳米催化剂和低表面积Fe2O3作为载体负载的Pt单原子催化剂.本工作为在高温下制备高载量和热稳定的单原子催化剂提供了新的策略.
作者
Kaipeng Liu
Yan Tang
Zhiyang Yu
Binghui Ge
Guoqing Ren
Yujing Ren
Yang Su
Jingcai Zhang
Xiucheng Sun
Zhiqiang Chen
Aiqin W ang
Jun Li
刘凯鹏;汤妍;喻志阳;葛炳辉;任国庆;任煜京;苏杨;张景才;孙秀成;陈志强;刘晓艳;乔波涛;李为臻;王爱琴;李隽(CAS Key Laboratory of Science and Technology on Applied Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China;Department of Chemistry&Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education,Tsinghua University,Beijing 100084,China;State Key Laboratory of Photocatalysis on Energy and Environment,College of Chemistry,Fuzhou University,Fuzhou 350002,China;Institute of Physical Science and Information Technology,Anhui University,Hefei 230601,China;Department of Chemistry,Southern University of Science and Technology,Shenzhen 518055,China)
基金
supported by the National Key Projects for Fundamental Research and Development of China(2016YFA0202801)
the National Natural Science Foundation of China(21673226
91645203 and 21590792)
the “Transformational Technologies for Clean Energy and Demonstration”
the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA21040200 and XDB17000000)
supported by the Tsinghua Xuetang Talents Program
