{"title":"优化光阳极和生物阴极之间的电子传递动力学,提高光催化燃料电池的碳中性污染物去除率","authors":"Xiaofei Gu, Jianyu Han, Zhi Wang, Yixin Hong, Tianyi Huang, Yafeng Wu, Yuanjian Zhang, Songqin Liu","doi":"10.1039/d4ta05290k","DOIUrl":null,"url":null,"abstract":"Photocatalytic fuel cells (PFCs) can harness energy from organic waste for electricity generation. However, incorporating CO2 reduction into PFC to achieve carbon neutrality remains significant challenges due to substantial thermodynamic and kinetic barriers. Herein, a PFC is constructed using formate dehydrogenase (FDH)-based biocathode and S-scheme heterojunction TiO2/CdS engineered photoanode. The resulting PFC integrates photoanodic pollutant degradation with bio-cathodic CO2 reduction to achieve formate production rate of 7.13 mol·h-1 with high selectivity and CO2 recovery efficiency of 76.1%, which is the best value in the reported PFC. Furthermore, PFC demonstrates a peak power and current density of 186.3 W cm-2 and 1361.6 A cm-2, respectively. The best performance of PFC is achieved due to the ultrafast electron transfer on the biocathode and the efficient carrier separation of the photoanode. The collaborative dynamics between the photoanode and biocathode lower the CO2 reduction potential, enhancing the reaction kinetics of CO2 reduction to formate.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":null,"pages":null},"PeriodicalIF":10.7000,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimization of Electron Transfer Kinetics Between Photoanode and Biocathode for Enhanced Carbon-Neutral Pollutant Removal in Photocatalytic Fuel Cells\",\"authors\":\"Xiaofei Gu, Jianyu Han, Zhi Wang, Yixin Hong, Tianyi Huang, Yafeng Wu, Yuanjian Zhang, Songqin Liu\",\"doi\":\"10.1039/d4ta05290k\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Photocatalytic fuel cells (PFCs) can harness energy from organic waste for electricity generation. However, incorporating CO2 reduction into PFC to achieve carbon neutrality remains significant challenges due to substantial thermodynamic and kinetic barriers. Herein, a PFC is constructed using formate dehydrogenase (FDH)-based biocathode and S-scheme heterojunction TiO2/CdS engineered photoanode. The resulting PFC integrates photoanodic pollutant degradation with bio-cathodic CO2 reduction to achieve formate production rate of 7.13 mol·h-1 with high selectivity and CO2 recovery efficiency of 76.1%, which is the best value in the reported PFC. Furthermore, PFC demonstrates a peak power and current density of 186.3 W cm-2 and 1361.6 A cm-2, respectively. The best performance of PFC is achieved due to the ultrafast electron transfer on the biocathode and the efficient carrier separation of the photoanode. The collaborative dynamics between the photoanode and biocathode lower the CO2 reduction potential, enhancing the reaction kinetics of CO2 reduction to formate.\",\"PeriodicalId\":82,\"journal\":{\"name\":\"Journal of Materials Chemistry A\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":10.7000,\"publicationDate\":\"2024-10-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Chemistry A\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1039/d4ta05290k\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4ta05290k","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Optimization of Electron Transfer Kinetics Between Photoanode and Biocathode for Enhanced Carbon-Neutral Pollutant Removal in Photocatalytic Fuel Cells
Photocatalytic fuel cells (PFCs) can harness energy from organic waste for electricity generation. However, incorporating CO2 reduction into PFC to achieve carbon neutrality remains significant challenges due to substantial thermodynamic and kinetic barriers. Herein, a PFC is constructed using formate dehydrogenase (FDH)-based biocathode and S-scheme heterojunction TiO2/CdS engineered photoanode. The resulting PFC integrates photoanodic pollutant degradation with bio-cathodic CO2 reduction to achieve formate production rate of 7.13 mol·h-1 with high selectivity and CO2 recovery efficiency of 76.1%, which is the best value in the reported PFC. Furthermore, PFC demonstrates a peak power and current density of 186.3 W cm-2 and 1361.6 A cm-2, respectively. The best performance of PFC is achieved due to the ultrafast electron transfer on the biocathode and the efficient carrier separation of the photoanode. The collaborative dynamics between the photoanode and biocathode lower the CO2 reduction potential, enhancing the reaction kinetics of CO2 reduction to formate.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.