Controllable NO Release for Catheter Antibacteria from Nitrite Electroreduction over the Cu-MOF  

作　　者：Yibo Wang Yutian Qin Wei Li Yuting Wang Lina Zhu Meiting Zhao Yifu Yu 

机构地区：[1]Institute of Molecular Plus,Department of Chemistry,School of Science,Tianjin University,Tianjin 300072,China [2]Tianjin Key Laboratory of Molecular Optoelectronic Sciences,Department of Chemistry,Institute of Molecular Aggregation Science,Tianjin University,Tianjin 300072,China [3]College of Chemistry,Nankai University,Tianjin 300071,China [4]Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China

出　　处：《Transactions of Tianjin University》2023年第4期275-283,共9页天津大学学报（英文版）

基　　金：the financial support from National Postdoctoral Science Foundation of China(Nos.2021M702436 and BX2021211);Haihe Laboratory of Sustainable Chemical Transformations;National Natural Science Foundation of China(Nos.22101202 and 22071173);Tianjin Science and Technology Programme(Nos.20JCJQJC00050 and 22ZYJDSS00060)。

摘　　要：Implant-associated infections caused by biomedical catheters severely threaten patients'health.The use of electrochemical control on NO release from benign nitrite equipped in the catheter can potentially resolve this issue with excellent biocompatibility.Inspired by nitrite reductase,a Cu-BDC(BDC:benzene-1,4-dicarboxylic acid)catalyst with coordinated Cu(Ⅱ)sites was constructed as a heterogeneous electrocatalyst to control nitrite reduction to nitric oxide for catheter antibacteria.The combined results of in situ and ex situ tests unveil the key function of interconversion between Cu(Ⅱ)and Cu(Ⅰ)species in NO_(2)^(-)reduction to NO.After being incorporated into the actual catheter,the Cu-BDC catalyst exhibits high electrocatalytic activity toward NO_(2)^(-)reduction to NO and excellent antibacteria efficacy with a sterilizing rate of 99.9%,paving the way for the development of advanced metal-organic frameworks(MOFs)electrocatalysts for catheter antibacteria.

关 键 词：Heterogeneous electrocatalysis Nitrite electroreduction NO-releasing catheter Antibacterial MOF material 

分 类 号：TH77[机械工程—仪器科学与技术] O643.36[机械工程—精密仪器及机械]