Implant-associated infections caused by biomedical catheters severely threaten patientsʼ 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 NO2− reduction to NO. After being incorporated into the actual catheter, the Cu-BDC catalyst exhibits high electrocatalytic activity toward NO2− 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.
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We would like to acknowledge 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).
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All authors declare that there are no competing interests.
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Wang, Y., Qin, Y., Li, W. et al. Controllable NO Release for Catheter Antibacteria from Nitrite Electroreduction over the Cu-MOF. Trans. Tianjin Univ. 29, 275–283 (2023). https://doi.org/10.1007/s12209-023-00359-w