Construction of a Cascade Catalyst of Nanocoupled Living Red Blood Cells for Implantable Biofuel Cell
| Autor: | He Wang, Lin Yang, Xiangli Ru, Huifeng Chen, Ge Li, Peng Liu, Ying Cao, Zhengyu Bai |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
inorganic chemicals
Erythrocytes Indoles Materials science Bioelectric Energy Sources Polymers Swine 02 engineering and technology 010402 general chemistry Electrocatalyst 01 natural sciences Catalysis Nanomaterials Glucose Oxidase Cascade reaction Animals General Materials Science Glucose oxidase In situ polymerization Electrodes biology Nanotubes Carbon Hydrogen Peroxide 021001 nanoscience & nanotechnology 0104 chemical sciences Oxygen Glucose Chemical engineering Biofuel Cascade biology.protein 0210 nano-technology Oxidation-Reduction |
| Zdroj: | ACS Applied Materials & Interfaces. 13:28010-28016 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | The broad applications of implantable glucose biofuel cells (GBFCs) have become very attractive in biomedical sciences. The key challenge of GBFCs is eliminating the inevitable product H2O2 generated from the oxidation of glucose when glucose oxidase (GOx) is used as a catalyst while improving the performance of GBFCs. In this work, the cascade electrocatalyst, RBCs@NPDA was obtained through the in situ polymerization of dopamine to form nanopolydopamine (NPDA) on the surface of red blood cells (RBCs). The RBCs@NPDA can catalyze both fuels of H2O2 and O2, so as to generate a high cathodic current (0.414 mA cm-2). Furthermore, when RBCs@NPDA was used as a cathodic catalyst in the membraneless GBFC, it exhibited the cascade catalytic activity in the reduction of O2-H2O2 and minimized the damage to RBCs caused by the high concentration of H2O2. The mechanism research indicates that RBCs@NPDA integrates the property of NPDA and RBCs. Specifically, NPDA plays a catalase-like role in catalyzing the decomposition of H2O2, while RBCs play a laccase-like role in electrocatalyzing the O2 reduction reaction. This work offers the cascade catalyst for improving the performance of implantable GBFC and presents a strategy for constructing catalysts using living cells and nanomaterials to replace deformable and unstable enzymes in other biofuel cells. |
| Databáze: | OpenAIRE |
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