Prof. Shan Ren

Xi’an Jiaotong University, China

E-mail: shanren@xjtu.edu.cn

Bio

Shan Ren is a Professor at the School of Energy and Power Engineering, Xi’an Jiaotong University. He is a Young Top-notch Talent of Xi’an Jiaotong University, a Chongqing Young Top-notch Talent, and a recipient of the Outstanding Youth Science Foundation of Shaanxi Province. His research mainly focuses on the detection and control of multiple pollutants in industrial flue gas and the resource utilization of solid waste. He has received several science and technology awards, including the First Prize of Chongqing Science and Technology Progress Award and the Second Prize of Chongqing Natural Science Award. He has published more than 150 SCI-indexed papers in journals such as Angewandte Chemie International Edition, Environmental Science & Technology, and Chemical Engineering Journal, including 10 ESI highly cited papers, and has been granted more than 20 Chinese invention patents.

Title

Facet-dependent reactivity of CeO2 to promote NH3-SCR and CO oxidation

Abstract

Simultaneous removal of NOx and CO is crucial for industrial flue gas purification. In this work, facet-dependent CeO2 nanostructures with different exposed crystal facets were synthesized to investigate their dual-functional catalytic performance in NH3-SCR and CO oxidation. By tuning the morphology and oxygen vacancy concentration, CeO2 nanorods exposing high-energy {110} facets exhibited abundant oxygen vacancies, enhanced surface acidity, and improved redox properties, leading to superior NO and CO conversion. Experimental characterizations combined with DFT calculations revealed that the exposed facets strongly influence oxygen vacancy formation, NH3 activation, and CO oxidation pathways. The results provide insights into the rational design of multifunctional CeO2-based catalysts for efficient simultaneous abatement of NOx and CO.