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Microwave-assisted synthesis of nitrogen-doped activated carbon as an oxygen reduction catalyst in microbial fuel cells
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wang, Haiman Liu, Luchang Zhou, Xiangtong Qu, Youpeng Zhang, Jie Feng, Yujie |
| Copyright Year | 2016 |
| Abstract | A nitrogen-doped activated carbon (NDAC) as a cathode catalyst in microbial fuel cells (MFCs) was synthesized by a microwave-assisted method using ammonium carbonate as a nitrogen source. The prepared NDAC showed a higher BET surface area of up to 1717.8 m2 g−1 and a total pore volume of 0.79 cm3 g−1. X-ray photoelectron spectroscopic analysis demonstrated that N was successfully doped on the surface of AC in three species, corresponding to pyrrolic N, pyridinic N and pyridine-N-oxide. Compared with untreated AC, the NDAC exhibited better electrocatalytic activity for the oxygen reduction reaction in rotating disk electrode tests, with a current density of 12.4 mA cm−2 at a set potential of −0.8 V (vs. SCE) (AC, 11.3 mA cm−2) and an electron transfer number of 3.14 (AC, n = 2.83). MFCs equipped with a NDAC cathode achieved a higher maximum power density of 471 ± 11 mW m−2 when fed with domestic wastewater, which was 1.3 times higher than that of the AC cathode. It also displayed long-term operation stability when dealing with real wastewater, indicating a promising cathode catalyst for MFCs towards practical applications. |
| Starting Page | 90410 |
| Ending Page | 90416 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C6RA14387C |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c6/ra/c6ra14387c/c6ra14387c1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C6RA14387C |
| Volume Number | 6 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
