文献类型：期刊文献

英文题名：A longitudinally expanded Ni-based metal-organic framework with enhanced double nickel cation catalysis reaction channels for a non-enzymatic sweat glucose biosensor

作者：Xuan, Xiaoyang[1,2];Qian, Min[1];Pan, Likun[3];Lu, Ting[3];Han, Lu[3];Yu, Huangze[3];Wan, Lijia[3];Niu, Yueping[1,2];Gong, Shangqing[1,2]

机构：[1]East China Univ Sci & Technol, Sch Sci, Dept Phys, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Engn Res Ctr Hierarch Nanomat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[3]East China Normal Univ, Sch Phys & Elect Sci, Shanghai Key Lab Magnet Resonance, Shanghai 200062, Peoples R China

年份：2020

卷号：8

期号：39

起止页码：9094

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY B

收录：;EI(收录号：20204209365867);WOS:【SCI-EXPANDED(收录号:WOS:000577910400010)】；

基金：This work is sponsored by the National Natural Science Foundation of China (61804054), the Natural Science Foundation of Shanghai (18ZR1410400), the Shanghai Sailing Program (17YF1403300), the Shanghai Aerospace Science and Technology Innovation Fund (SAST2019-067), the Fundamental Research Funds for the Central Universities (222201714017), and the Social Development Program of Shanghai (17DZ1200900, 18DZ2252400).

语种：英文

外文关键词：Catalysis - Nickel compounds - Positive ions - Chronoamperometry - Glucose - Solid electrolytes - Signal to noise ratio - Cyclic voltammetry

摘要：Nickel-based metal-organic frameworks (Ni-MOFs) have attracted increasing attention in non-enzymatic glucose sensing. However, the insufficient active Ni cation sites from a stacked MOF layer, the unclear Ni catalysis mechanism, and the severe liquid alkaline electrolyte remain challenging for practical applications. In this work, the sonication-induced longitudinal-expansion of Ni-MOFs increases the active nickel ion sites, which not only enhances the current response to glucose detection, but also shows the oxidation peak evolution of nickel ions with different sonication times, revealing the mechanism of different glucose detection channels. The Ni-MOF sonicated for 60 min (60 min Ni-MOF) displays enhanced Ni(iii)/Ni(ii) and more significant Ni(iv)/Ni(iii) double nickel cation channels for catalyzing glucose into glucolactone compared to the 0 min Ni-MOF (without sonication), showing optimized glucose detection ability with a high sensitivity of 3297.10 mu A mM(-1)cm(-2), a low detection limit of similar to 8.97 mu M (signal-to-noise = 3) and a wide linear response range from 10 to 400 mu M from the cyclic voltammetry test as well as a high sensitivity of 3.03 mu A mM(-1)cm(-2), a low detection limit of similar to 1.16 mu M (signal-to-noise = 3) and a wide linear response range from 10 to 2000 mu M from the chronoamperometry test. More importantly, an all-solid-state glucose biosensor using a PVA/NaOH solid-state electrolyte and a disposable 60 min Ni-MOF working electrode is assembled for non-enzymatic sweat glucose detection.