Atomically isolated Pd sites within Pd-S nanocrystals enable trifunctional catalysis for direct,electrocatalytic and photocatalytic syntheses of H_(2)O_(2)

作     者：Tang Yang Chengyong Yang Jiabo Le Zhiyong Yu Lingzheng Bu Leigang Li Shuxing Bai Qi Shao Zhiwei Hu Chih-Wen Pao Jun Cheng Yonggang Feng Xiaoqing Huang Tang Yang;Chengyong Yang;Jiabo Le;Zhiyong Yu;Lingzheng Bu;Leigang Li;Shuxing Bai;Qi Shao;Zhiwei Hu;Chih-Wen Pao;Jun Cheng;Yonggang Feng;Xiaoqing Huang

作者机构：State Key Laboratory of Physical Chemistry of Solid SurfacesCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Max-Planck-Institute for Chemical Physics of SolidsNöthnitzer Street 40Dresden 01187Germany “National Synchrotron Radiation Research Center”Hsinchu 30076TaiwanChina 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第3期

页      面：1861-1867页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：the National Key R&D Program of China(Nos.2017YFA0208200 and 2016YFA0204100) the National Natural Science Foundation of China(No.22025108) the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) the start-up supports from Xiamen University 

主　　题：Pd-S universality direct synthesis of H_(2)O_(2) oxygen reduction photocatalysis 

摘      要：Although high-efficiency production of hydrogen peroxide(H_(2)O_(2))can be realized separately by means of direct,electrochemical,and photocatalytic synthesis,developing versatile catalysts is particularly challenging yet ***,for the first time we reported that palladium-sulphur nanocrystals(Pd-S NCs)can be adopted as robust and universal catalysts,which can realize the efficient O_(2) conversion by three *** a result,Pd-S NCs exhibit an excellent selectivity(89.5%)to H_(2)O_(2)with high productivity(133.6 mol·kgcat^(−1)·h^(−1))in the direct synthesis,along with the significantly enhanced H_(2)O_(2)production activity and stability via electrocatalytic and photocatalytic *** is demonstrated that the isolated Pd sites can enhance the adsorption of O_(2) and inhibit its O–O bond dissociation,improving H_(2)O_(2)selectivity and reducing H_(2)O_(2)*** study confirms that the difference in surface atom composition and arrangement is the key factor for different ORR mechanisms on Pd NCs and Pd-S NCs.