Manganese oxide/functionalised carbon nanotubes nanocomposite as catalyst for oxygen reduction reaction in microbial fuel cell
| Autor: | Kee Shyuan Loh, Jun Xing Leong, Manal Ismail, Wan Ramli Wan Daud, Swee Su Lim, Mostafa Ghasemi, Kien Ben Liew |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Microbial fuel cell
Materials science Nanocomposite Renewable Energy Sustainability and the Environment Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Carbon nanotube Condensed Matter Physics law.invention Catalysis Fuel Technology chemistry Chemical engineering law Hydrothermal synthesis Cyclic voltammetry Carbon Faraday efficiency |
| Zdroj: | International Journal of Hydrogen Energy. 40:11625-11632 |
| ISSN: | 0360-3199 |
| Popis: | Manganese oxide/functionalised carbon nanotubes (MnO2/f-CNT) nanocomposite is believed to be a good catalyst for oxygen reduction reaction (ORR) in a neutral solution; especially in a microbial fuel cell. The unique interaction between MnO2 and f-CNT will enhance the electron transfer process and facilitate the ORR. MnO2/f-CNT nanocomposite was fabricated by in-situ hydrothermal synthesis method. The MnO2/f-CNT was characterised by the field emission scanning electron microscope (FESEM). Raman spectra has proved there is more carbon defect on the surface of CNT after functionalization. XRD pattern showed amorphous MnO2 crystal existed in MnO2/f-CNT catalyst. This study further employed cyclic voltammetry (CV) techniques to investigate catalytic activity. Lastly, microbial fuel cell test showed that MnO2/f-CNT displayed higher power density (520 mW m−2) compared to CNT (275 mW m−2) and f-CNT (440 mW m−2). Moreover, the coulombic efficiency (28.65%) and COD removal value (86.6%) of MFC with MnO2/f-CNT catalyst was higher amongst the three catalysts tested. This study concluded that MnO2/f-CNT can be a good catalyst in microbial fuel cell application. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect