| Title | Graphene oxide and H-2 production from bioelectrochemical graphite oxidation |
| Authors | Lu, Lu Zeng, Cuiping Wang, Luda Yin, Xiaobo Jin, Song Lu, Anhuai Ren, Zhiyong Jason |
| Affiliation | Univ Colorado, Dept Civil Environm & Architectural Engn, Boulder, CO 80309 USA. Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA. Univ Wyoming, Dept Civil & Architectural Engn, Laramie, WY 82071 USA. Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China. |
| Keywords | HYDROCARBON-CONTAMINATED SOIL MICROBIAL ELECTROLYSIS CELLS FUNCTIONALIZED GRAPHENE COMMODITY CHEMICALS GREEN APPROACH FUEL-CELLS CARBON ELECTROSYNTHESIS EXFOLIATION COMMUNITY |
| Issue Date | 2015 |
| Publisher | SCIENTIFIC REPORTS |
| Citation | SCIENTIFIC REPORTS.2015,5. |
| Abstract | Graphene oxide (GO) is an emerging material for energy and environmental applications, but it has been primarily produced using chemical processes involving high energy consumption and hazardous chemicals. In this study, we reported a new bioelectrochemical method to produce GO from graphite under ambient conditions without chemical amendments, value-added organic compounds and high rate H-2 were also produced. Compared with abiotic electrochemical electrolysis control, the microbial assisted graphite oxidation produced high rate of graphite oxide and graphene oxide (BEGO) sheets, CO2, and current at lower applied voltage. The resultant electrons are transferred to a biocathode, where H-2 and organic compounds are produced by microbial reduction of protons and CO2, respectively, a process known as microbial electrosynthesis (MES). Pseudomonas is the dominant population on the anode, while abundant anaerobic solvent-producing bacteria Clostridium carboxidivorans is likely responsible for electrosynthesis on the cathode. Oxygen production through water electrolysis was not detected on the anode due to the presence of facultative and aerobic bacteria as O-2 sinkers. This new method provides a sustainable route for producing graphene materials and renewable H-2 at low cost, and it may stimulate a new area of research in MES. |
| URI | http://hdl.handle.net/20.500.11897/416728 |
| ISSN | 2045-2322 |
| DOI | 10.1038/srep16242 |
| Indexed | SCI(E) PubMed |
| Appears in Collections: | 地球与空间科学学院 造山带与地壳演化教育部重点实验室 |
