A novel core–shell structured multiwall carbon nanotube–graphene oxide nanoribbon (MWCNT@GONR) and a nitrogen-doped MWCNT@GONR (N-MWCNT@GONR) were synthesized through a microwave energy-assisted unzipping process and utilized as anodes for Escherichia coli-based microbial fuel cells (MFCs) for the first time. To evaluate the electrochemical performance of the MFCs, we measured the electrochemical activity and charge transfer in MFCs with MWCNT, N-MWCNT@GONR, and MWCNT@GONR anodes. Compared to the MFC with the MWCNT anode (970 mW m⁻²), the MFCs with the N-MWCNT@GONR and MWCNT@GONR anodes exhibit higher power densities of up to 3444 and 3291 mW m⁻², respectively. Both the oxygen and nitrogen functional groups on the MWCNT@GONR and N-MWCNT@GONR contribute to good biocompatibility, which greatly enhances the charge transfer efficiency and biofilm formation on the anode surface. Our results suggest that MWCNT@GONR and N-MWCNT@GONR are outstanding and promising anode materials for MFCs.

中文翻译：

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核-壳结构的多壁碳纳米管-氧化石墨烯纳米带及其氮掺杂变体，作为高功率微生物燃料电池的阳极

通过微波能量辅助解压缩工艺合成了新颖的核壳结构多壁碳纳米管-氧化石墨烯纳米带（MWCNT @ GONR）和氮掺杂的MWCNT @ GONR（N-MWCNT @ GONR），并用作大肠杆菌的阳极的微生物燃料电池（MFC）。为了评估MFC的电化学性能，我们使用MWCNT，N-MWCNT @ GONR和MWCNT @ GONR阳极测量了MFC中的电化学活性和电荷转移。与具有MWCNT阳极的MFC（970 mW m ^-2）相比，具有N-MWCNT @ GONR和MWCNT @ GONR阳极的MFC具有更高的功率密度，分别高达3444和3291 mW m ^-2， 分别。MWCNT @ GONR和N-MWCNT @ GONR上的氧和氮官能团均有助于良好的生物相容性，从而大大提高了阳极表面的电荷转移效率和生物膜形成。我们的结果表明，MWCNT @ GONR和N-MWCNT @ GONR是出色且前景广阔的MFC阳极材料。