文献类型：期刊文献

英文题名：Ternary Schottky-p-n heterojunction strategy for enhancing photothermal dry reforming of methane

作者：Zhang, Qingqing[1,2];Chen, Ziyu[1,2];Ye, Yutao[1,2];Xu, Chang[1,2];Liu, Cong[1];Cao, Xiaoming[3];Zhang, Jinlong[1,2];Lei, Juying[2];Ye, Ziwei[1,2];Wang, Lingzhi[1,2]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem, Feringa Nobel Prize Scientist Joint Res Ctr, State Key Lab Green Chem Engn & Ind catalysis,Key, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, Shanghai 200237, Peoples R China;[3]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, State Key Lab Synergist Chem Bio Synth, Shanghai 200240, Peoples R China

年份：2025

卷号：11

期号：29

外文期刊名：SCIENCE ADVANCES

收录：;EI(收录号：20253118895002);WOS:【SCI-EXPANDED(收录号:WOS:001531794500023)】；

基金：This work was supported by the National Key R&D Program of China (2022YFE0107900 to J.Z.), National Natural Science Foundation of China (22472056 to L.W. and 22461142136 to J.Z.), the Science and Technology Commission of Shanghai Municipality (24ZR1491000 to L.W., 22230780200 to J.Z., and 20DZ2250400 to J.Z.), the Innovation Program of Shanghai Municipal Education Commission (2021-01-07-00-02-E00106 to J.Z.), and the Fundamental Research Funds for the Central Universities (222201717003 to J.Z.).

语种：英文

外文关键词：Catalyst activity - Efficiency - Heterojunctions - Methane - Nickel oxide - Niobium oxide - Syngas production - Temperature

摘要：Breaking the trade-off between activity and stability in catalysts for dry reforming of methane has long remained a huge challenge. Here, we demonstrate a ternary Schottky-p-n (TSPN) heterojunction strategy based on Ni-NiO-Sr2Nb2O7 (NiOx/SNO) for photothermal dry reforming of methane. This approach achieves a stable syngas production rate of 10.54 moles per gram per hour, with a light-to-fuel efficiency of 28.3% and a CH4 turnover frequency of 18 per second at 500 degrees C generated by concentrated light irradiation. This low-temperature, high-rate activity benefits from the photoaccelerated CH4-to-H2 process facilitated by the synergistic effect of NiO and Ni0. Furthermore, the light-induced spatial separation of dual reduction sites for CO2 reduction (SNO) and H2 evolution (Ni0) suppresses the reverse water-gas shift (RWGS) reaction, ensuring continuous supply of active oxygen and improving reaction stability. This finding is expected to substantially promote low-temperature photothermal catalytic technology in enhancing the selective conversion efficiency of C1 molecules.