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| Electro-generation of hydrogen peroxide on the porous carbon fiber fabricated on the basis of collagen fiber—Investigation on the effect of acid treatment on its performance |
| LAN Yang1, WANG Kai1, DENG Yan1, LEI Miao1, MA Jun1,2, ZHAO Shi-lin1,2 |
1. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, P. R. China;
2. Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Chengdu, 610068, P.R. China |
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Abstract In the present work, orderly porous carbon fiber was fabricated on the basis of collagen fibers, a kind of biomass widely existed in the nature, to electro-generate hydrogen peroxide (H2O2) through oxygen oxidation reaction (ORR) with a satisfactory performance. The carbon fiber material was obtained through the procedures as follow:adsorption of iron ion onto collagen fiber via the complexation reaction between the iron ion and the function groups of collagen fiber, such as -COOH and -NH2, carbonization in the vacuum, and leaching of iron oxide by nitric acid. Meanwhile, the material's structure was thoroughly characterized by means of XRD、SEM、BET and so on. Finally, the elctro-chemical activity and efficiency for electro-genenation H2O2 of the material were investigated. It was found that porous carbon fiber was fabricated through the procedure described above, and the carbon material obtained by leaching iron oxide by nitric acid with a concentration of 1.0mol/L possess the optimal performance for electro-generation of H2O2,i.e. cumulative concentration of H2O2 reaching 148.81mg/L after oxygen oxidation reaction for 2.5h with the corrsponding current efficiency of 72.33%. It is anticipated that our work could provide new insights for the fabrication of a novel carbon fiber for in-situ electro-generation of hydrogen peroxide with improved performance.
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Received: 25 December 2017
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