文献类型：期刊文献

英文题名：Single-atom Ni-N4 for enhanced electrochemical sensing

作者：Qin, Zhuhui[1,2,3];Tang, Bo[4];Zhang, Guiru[5];Zhu, Chongqing[4];Jiang, Kun[5];Zhang, Bowei[1,2,3];Xuan, Fu-Zhen[1,2,3]

机构：[1]East China Univ Sci & Technol, 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, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[4]Beijing Normal Univ, Coll Chem, Key Lab Theoret & Computat Photochem, Minist Educ, Beijing 100875, Peoples R China;[5]Shanghai Jiao Tong Univ, Interdisciplinary Res Ctr, Sch Mech Engn, Shanghai 200240, Peoples R China

年份：2024

卷号：17

期号：8

起止页码：7658

外文期刊名：NANO RESEARCH

收录：;EI(收录号：20242616316326);WOS:【SCI-EXPANDED(收录号:WOS:001252787800002)】；

基金：This work was supported by the National Key R&D Program of China (Nos. 2022YFA1505100 and 2022YFB4102000), the National Natural Science Foundation of China (Nos. 52105145, 12274124, and 22002088), the Shanghai Pilot Program for Basic Research (No. 22TQ1400100-6), and the Fundamental Research Funds for the Central Universities. Theoretical calculation was supported by Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University.

语种：英文

外文关键词：single-atom catalysts; chemical sensing; dopamine; uric acid

摘要：Single-atom catalysts (SACs) attract widespread attention in heterogeneous catalysis due to their maximum atomic utilization efficiency and unique physical and chemical properties. However, their applications in chemical sensing keep huge potential but remain unclear. Herein, a Ni-N-4-C SAC was synthesized for the trace detection of dopamine (DA) and uric acid (UA). The Ni-N-4-C SAC exhibited superior sensing performance compared to the Ni clusters. The detection range for DA and UA were 0.05-75 mu M and 5-90 mu M with detection limits of 0.027 and 0.82 mu M, respectively. Density functional theory (DFT) computations indicate that Ni-N-4-C has a lower reaction barrier during electrochemical process, indicating that the atomic Ni sites possess higher intrinsic activity than Ni clusters. Moreover, DA and UA show strong potential dependency on the Ni-N-4-C catalyst, indicating its applicability for their concurrent detection. This work extends the application of SACs in chemical sensing.