| Building electrode with three-dimensional macroporous interface from biocompatible polypyrrole and conductive graphene nanosheets to achieve highly efficient microbial electrocatalysis | |
Yang, Liming; Yi, Genping; Hou, Yanan; Cheng, Haoyi ; Luo, Xubiao; Pavlostathis, Spyros G.; Luo, Shenglian; Wang, Aijie
| |
| 2019-09-15 | |
| Source Publication | BIOSENSORS & BIOELECTRONICS
 |
| ISSN | 0956-5663 |
| Volume | 141Pages:- |
| Abstract | Bioelectrochemical systems (BESs) possess a great potential for simultaneous wastewater treatment and energy recovery. Rational construction of electrode materials could significantly improve the BESs performance. Three-dimensional macroporous electrode interface with high conductivity is highly desirable but challenging. In this work, we report a hierarchically nanostructured reduced graphene oxide nanosheets-polypyrrole (rGO@PPy) electrode via one-step electrodeposition technique. The prepared electrode was comprehensively studied by scanning/transmission electron microscopy, Raman spectroscopy, X-ray diffraction and electrochemical measurements, which showed that the rGO@PPy possessed a three-dimensional macroporous interconnecting scaffold with superior conductivity. The rGO@PPy electrode was utilized in Geobacter sulfurreducens inoculated BESs, and the maximum current density was 4.10 +/- 0.02 mA cm(-2), which is 8-fold higher than that of a rGO electrode (0.51 +/- 0.03 mA cm(-2)), and is among the best performance reported for two-dimensional electrodes. The improved performance is ascribed to ultrahigh biomass concentration induced by best match scale between rGO@PPy and microbes, excellent extracellular electron transfer, as well as enhanced microbial affinity through the adequate exposure of biocompatible PPy layers. This work demonstrated a synergistic effect between rGO and PPy for the BESs performance improvement, and provided a new insight to design and fabricate a high-performance bioelectrode. |
| Department | 中国科学院环境生物技术重点实验室 |
| Keyword | Microbial electrocatalysis Electrode interface Graphene Polypyrrole Microbial colonization Electron transfer |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/43342 |
| Collection | 中国科学院环境生物技术重点实验室 |
| Affiliation | 1.Nanchang Hangkong Univ, Key Lab Jiangxi Prov Persistent Pollutants Contro, Nanchang 330063, Jiangxi, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China 3.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA |
| Recommended Citation GB/T 7714 | Yang, Liming,Yi, Genping,Hou, Yanan,et al. Building electrode with three-dimensional macroporous interface from biocompatible polypyrrole and conductive graphene nanosheets to achieve highly efficient microbial electrocatalysis[J]. BIOSENSORS & BIOELECTRONICS,2019,141:-. |
| APA | Yang, Liming.,Yi, Genping.,Hou, Yanan.,Cheng, Haoyi.,Luo, Xubiao.,...&Wang, Aijie.(2019).Building electrode with three-dimensional macroporous interface from biocompatible polypyrrole and conductive graphene nanosheets to achieve highly efficient microbial electrocatalysis.BIOSENSORS & BIOELECTRONICS,141,-. |
| MLA | Yang, Liming,et al."Building electrode with three-dimensional macroporous interface from biocompatible polypyrrole and conductive graphene nanosheets to achieve highly efficient microbial electrocatalysis".BIOSENSORS & BIOELECTRONICS 141(2019):-. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Building electrode w（3468KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment