Highly efficient enzyme immobilization by nanocomposites of metal organic coordination polymers and carbon nanotubes for electrochemical biosensing
文献类型： 外文期刊
作者： Xu, Xiahong 1 ; Qi, Xin 3 ; Wang, Xinquan 1 ; Wang, Xiangyun 1 ; Wang, Qiang 1 ; Yang, Hua 1 ; Fu, Yingchun 2 ; Yao, Shou 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R China
2.Zhejiang Univ, Coll Biosyst Engn & Food Sci, Hangzhou 310058, Zhejiang, Peoples R China
3.Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China
关键词： Metal-organic coordination polymers;Multi-walled carbon nanotubes;Nanocomposites;Electrochemical biosensing;Glucose oxidase
期刊名称：ELECTROCHEMISTRY COMMUNICATIONS （ 影响因子：4.724； 五年影响因子：4.898 ）
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收录情况： SCI
摘要： New nanocomposites with multi-walled carbon nanotubes (MWCNTs) embedded in metal-organic coordination polymers (MOCPs) were successfully prepared as highly efficient matrices of enzyme immobilization for sensitive electrochemical biosensing. NaAuCl4 was pre-adsorbed on the MWCNTs to act as anchor sites to further coordinate with ligand benzenedithiol and form MOCPs. The formation of MWCNTs-MOCPs one-pot entrapped glucose oxidase (GOx) with a ratio close to 100% and exhibited enhanced mass-transfer over MOCPs. Thus MWCNTs-MOCPs-modified electrodes present superior enzymatic catalysis performance of greatly enhanced sensitivity (136 mu A cm(-2) mM(-1)) and magnitudes-lower detection limit (48 nM), being superior to most analogues.
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