文献类型：期刊文献

英文题名：Two-dimensional MOF-derived porous nanosheets dotted with in-situ MgO/ carbon heterostructure achieving striking performance in H2S catalytic oxidation at room temperature

作者：Chen, Shengwei[1];Liu, Chuanlei[3];Wang, Jun[1];Li, Qi[1];Zhang, Yongzheng[1];Ma, Cheng[4];Sun, Hui[1,3];Wang, Jitong[1,2,3];Qiao, Wenming[3];Ling, Licheng[3]

机构：[1]East China Univ Sci & Technol, Key Lab Green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China;[2]Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc Int, Nanning 530004, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Minist Educ, Sch Mat Sci & Engn, Key Lab Specially Funct Polymer Mat & Related Tech, Shanghai 200237, Peoples R China

年份：2025

卷号：366

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20250117636442);WOS:【SCI-EXPANDED(收录号:WOS:001400269100001)】；

基金：Acknowledgments This work is financially supported by the National Natural Science Foundation of China (Nos. U21A2060 and 22178116) , the Natural Sci-ence Foundation of Shanghai (No. 22ZR1417400) , and the Fundamental Research Funds for the Central Universities (222201817001,

语种：英文

外文关键词：Hydrogen sulfide; Catalytic oxidation; Porous carbon nanosheets; Metal-organic frameworks; Two-dimensional materials

摘要：H2S catalytic oxidation at room temperature is a promising scheme to satisfy industrial and environmental requirements. Herein, 2D magnesium-based MOF nanosheets were controllably synthesized through a facile bottom-up solvothermal method using PVP as a structure-directing agent. Further, in-situ omasum-like MOFderived porous nanosheets dotted with MgO/C heterostructures were obtained via one-step self-templating pyrolysis to avoid random blockage to porosity. The two-dimensional character endows the catalyst with fully exposed active sites and abundant interlayers to achieve ultrahigh activity and capacity with an unprecedented performance of 11.2 g H2S/g. DFT calculations reveal a lower barrier from 3O2 to 1O2 on defect carbon than that on pristine and hydrogen-saturated graphene. Ions and electrons may migrate directionally through the water film and the carbon substrate, respectively, constituting numerous circuits for rapid redox reactions. The advantages of in-situ-type catalysts are innovatively emphasized, and a potential guide to the rational design of catalysts is provided.