文献类型：期刊文献

英文题名：In-situ Raman unveiled Nb-O-bond-dependency selectivity for methanol electro-oxidation at high current density

作者：Wang, Xinlin[1,2];Xiao, Chuqian[3];Li, Yuhang[3];Murayama, Toru[4,5];Ishida, Tamao[6,7];Lin, Mingyue[1,2];Xiu, Guangli[1]

机构：[1]East China Univ Sci & Technol, Shanghai Environm Protect Key Lab Environm Stand &, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[3]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[4]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[5]Tokyo Metropolitan Univ, Res Ctr Hydrogen Energy Based Soc, Grad Sch Urban Environm Sci, 1-1 Minami Osawa, Hachioji, Tokyo 1920397, Japan;[6]Yantai Univ, Shandong Appl Res Ctr Gold Nanotechnol Au SDARC, Sch Chem & Chem Engn, Yantai Key Lab Gold Catalysis & Engn, Yantai 264005, Peoples R China;[7]Tokyo Metropolitan Univ, Grad Sch Urban Environm Sci, Dept Appl Chem Environm, Hachioji, Tokyo 1920397, Japan

年份：2023

卷号：664

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：;EI(收录号：20230106317);WOS:【SCI-EXPANDED(收录号:WOS:001059118200001)】；

基金：This work is financially supported by the National Key Research and Development Program of China (No. 2022YFC3703503) , " the Fundamental Research Funds for the Central Universities " and Shanghai Municipal Bureau of Ecology and Environment (2022, HUHUANKE No. 30 and No. 33) . The authors are also grateful for the partial support of the J JSPS and National Natural Science Foundation of China (NSFC) under the Joint Research Program (JRP with NSFC, No. JPJSJRP20191804) , and the Japan Society for the Promotion of Science (JSPS) Grant-in-aid for Scientific Research (22H00282 and 23H01763) .

语种：英文

外文关键词：Niobium oxide; Methanol oxidation reaction; Formate; Electrocatalysis; Operando Raman spectroscopy

摘要：Selective methanol oxidation reaction (MOR) to value-added formate can maximize the energy utilization by replacing the high onset-potential and sluggish oxygen evolution reaction. However, to date, only first-row 3d transition metal oxides exhibit the capacity of selective MOR, motivating the design of new kinds of electrocatalysts to further enhance the performance. Here we develop amorphous Nb2O5 as an efficient electrocatalyst, for the first time, for selective MOR to formate, with a low operating potential of 1.47 V vs. RHE to achieve the industry-relevant current densities (>100 mA cm(-2)) with a formate Faradaic efficiency of similar to 100 %. We demonstrate, via operando Raman measurements, that this superior electrochemical MOR capacity originates from the in-situ induced short Nb-O bonds from the amorphous structure. Besides, the interface between amorphous Nb2O5 and nickel foam could also faciltate the MOR. This work may provide insights for designing novel transition metal oxides as efficient catalysts for selective MOR.