Journal
CHEMICAL ENGINEERING JOURNAL
Volume 473, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2023.145162
Keywords
Photocatalytic fuel cell; Solar energy; Electricity; Hydrogen generation; Wastewater treatment
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Solar energy is crucial for life and activities on Earth. Photocatalysis based on solar energy has the potential to solve environmental pollution, energy crisis, and global warming. Photocatalytic fuel cells (PFCs) are particularly promising in light-driven wastewater remediation and energy generation. This review comprehensively assesses recent progress in material development, system configurations, and reaction processes, and highlights the significance of PFCs as alternatives to traditional technologies.
Solar energy is a crucial source that sustains all life and activities on Earth. Photocatalysis based on solar energy is an exciting technology with great potential for solving complex problems, including environmental pollution, energy crisis, and global warming. Over the past few decades, significant efforts have been made in developing photocatalytic techniques. One particularly promising area is the use of photocatalytic fuel cells (PFCs) for lightdriven wastewater remediation and energy generation, which has gained considerable attention due to its ability to simultaneously remove organic pollutants and generate electricity/hydrogen using sunlight alone. In this review, we comprehensively assess recent progress in the development of photoanode/photocathode materials, cathode materials, system configurations, and radical reaction processes. We also summarize five key strategies to improve system dynamics and charge transfer properties. By highlighting the significance of designing and implementing PFCs as alternatives to traditional technologies, we provide insights into future research directions necessary for the advancement of highly efficient PFCs. Furthermore, we extensively discuss the challenges, perspectives, and future studies for various PFC or hybrid systems, and also the cost analysis of PFC based wasterwater treatment technique. Addressing challenges related to catalyst design, charge carrier dynamics, mass transport, system integration, and scalability, along with exploring environmental applications, advanced characterization techniques, combining with machine learning, system optimization, and control, will pave the way for the successful implementation and widespread adoption of PFCs.
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