文献类型：期刊文献

英文题名：Atomic Pd Sites on Ceo2 Nanorods for Highly Selective Hydrogen Peroxide Generation and Efficient Degradation of Organic Pollutants

作者：Wei, Hehe[1]; Chai, Manqing[1]; Su, Zixiang[1]; Zhu, Haiwei[3]; Gong, Xue-Qing[2]; Xing, Runjia[1]; Wang, Qiang[1]

机构：[1] State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Center for Computational Chemistry, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [2] School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; [3] Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240208690)

语种：英文

外文关键词：Catalyst selectivity - Cerium oxide - Coordination reactions - Electrocatalysis - Electrolytic reduction - Ketones - Nanorods - Organic pollutants - Oxidation - Oxygen - Palladium compounds

摘要：Electrochemical synthesis of hydrogen peroxide (H2O2) has been emerging as a green alternative technology of the traditional anthraquinone process, though the selectivity and yield of H2O2 are still hindered by the current catalysts with high cost or difficulties of precise and specific coordination environments. Herein, the boosted selectivity of electrochemical synthesis toward H2O2 with 82% Faradaic efficiency and high stability for >20 h is manufactured by the atomic Pd sites being supported on the CeO2 nanorods (Pd1/CeO2). The fabrication of atomically dispersed Pd sites and charge redistribution between Pd1 and CeO2 support result in the enhancement of OOH* coverage, confirmed by in-situ characterization techniques, thereby improving the H2O2 selectivity compared with Pd nanoparticles supported on CeO2 and pure CeO2 catalysts. Furthermore, with a promising H2O2 yield of 462 mmol gcatalyst-1 h-1 and 5.2 wt.% concentration at 0.1 V vs. RHE, Pd1/CeO2 shows efficient on-site degradation of Rhodamine B and tetracycline. ? 2024, The Authors. All rights reserved.