文献类型：期刊文献

英文题名：High-Density Dual-Structure Single-Atom Pt Electrocatalyst for Efficient Hydrogen Evolution and Multimodal Sensing

作者：Chu, Tianshu[1,2];Wang, Guiying[1,2];Zhang, Xiangyu[1,2];Jia, Yanyan[3,4,5];Dai, Sheng[3,4,5];Liu, Xinzhi[6];Zhang, Li[7,8];Yang, Xuan[7,8];Zhang, Bowei[1,2];Xuan, Fu-Zhen[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[4]Chinese Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Joint Int Res Lab Precis Chem & Mol Engn,Inst Fine, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[6]Tsinghua Univ, Dept Precis Instruments, State Key Lab Precis Measurement & Instruments, Beijing 100084, Peoples R China;[7]Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Key Lab Mat Chem Energy Convers & Storage, Wuhan 430074, Peoples R China;[8]Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Hubei Key Lab Mat Chem & Serv Failure, Wuhan 430074, Peoples R China

年份：2024

卷号：24

期号：31

起止页码：9666

外文期刊名：NANO LETTERS

收录：;EI(收录号：20243216824024);WOS:【SCI-EXPANDED(收录号:WOS:001281440500001)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 52105145, No. 12274124), the Shanghai Pilot Program for Basic Research (No. 22TQ1400100-6), the Science and Technology Commission of Shanghai Municipality (22ZR1415700), the Shanghai Rising-star Program (20QA1402400), and the Fundamental Research Funds for the Central Universities. L.Z. and X.Y. acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 22204054) and the HUST Academic Frontier Youth Team grant (Grant No. 2019QYTD11). Additional support was provided by the Frontiers Science Center for Materiobiology and Dynamic Chemistry and the Feringa Nobel Prize Scientist Joint Research Center at the East China University of Science and Technology. We thank Prof. Teri W. Odom at Northwestern University, USA, for her support on the original material synthesis.

语种：英文

外文关键词：Single atoms; Two-dimensional materials; Hydrogenevolution; Multimodal sensing; Machine learning

摘要：Herein, we report a high-density dual-structure single-atom catalyst (SAC) by creating a large number of vacancies of O and Ti in two-dimensional (2D) Ti3C2 to immobilize Pt atoms (SA Pt-Ti3C2). The SA Pt-Ti3C2 showed excellent performance toward the pH-universal electrochemical hydrogen evolution reaction (HER) and multimodal sensing. For HER catalysis, compared to the commercial 20 wt % Pt/C, the Pt mass activities of SA Pt-Ti3C2 at the overpotentials of similar to 30 and 110 mV in acid and alkaline media are 45 and 34 times higher, respectively. More importantly, during the alkaline HER process, an interesting synergetic effect between Pt-C and Pt-Ti sites that dominated the Volmer and Heyrovsky steps, respectively, was revealed. Moreover, the SA Pt-Ti3C2 catalyst exhibited high sensitivity (0.62-2.65 mu A mu M-1) and fast response properties for the multimodal identifications of ascorbic acid, dopamine, uric acid, and nitric oxide under the assistance of machine learning.