Synergetic PVA degradation and H2 evolution in photocatalytic fuel cells using Ag@Fe2O3 cathode

2024, Volume 18, Issue 1

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Frontiers of Chemical Science and Engineering >> 2024, Volume 18, Issue 1 doi: 10.1007/s11705-023-2374-0

Synergetic PVA degradation and H₂ evolution in photocatalytic fuel cells using Ag@Fe₂O₃ cathode

1. College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China 2. Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information, Nanjing Normal University, Nanjing 210023, China 3. Department of Physics, Hamline University, St. Paul 55104, USA

Received: 2023-09-08 Revised: 2023-10-09 Accepted: 2023-12-01 Available online: 2024-01-15

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Abstract

In a dual-chamber photocatalytic fuel cell device, polyvinyl alcohol degradation and H₂ evolution were concurrently achieved. The setup involved commercial P25 as the photoanode and Ag@Fe₂O₃ nanoparticles as the cathode. Additionally, the feasibility of a Fenton-like reaction in the cathode, utilizing Fe²⁺ ions and pumped O₂, was demonstrated. Different cathode materials, polyvinyl alcohol types, and pH values’ effects were assessed on device performance. Quenching tests highlighted photoinduced holes (h⁺) and OH· radicals as pivotal contributions to polyvinyl alcohol degradation. Long-term stability of the device was established through cycling experiments.

Keywords

photocatalytic fuel cell ; PVA ; Ag@Fe₂O₃ ; cathode materials ; Fenton-like reaction

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