期刊
ACS ES&T ENGINEERING
卷 2, 期 6, 页码 1116-1129出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsestengg.2c00009
关键词
Environmental photocatalysis; Photoelectrochemical (PEC) reaction; Solar water treatment; Redox transformation; Advanced oxidation processes
资金
- Leading Researcher Program - Korea government (MSIT) through the National Research Foundation of Korea (NRF) [NRF-2020R1A3B2079953]
- Brain Pool Program (Brain Pool Program) - Korea government (MSIT) through the National Research Foundation of Korea (NRF) [2019H1D3A1A01070035]
- National Research Foundation of Korea [2019H1D3A1A01070035] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The circulation and transformation of resource/energy and the self-cleaning of contaminated environments are driven by solar radiation. Photo(electro)catalysis, which mimics nature's solar conversion processes, is being intensively studied as a key technology for sustainable development. This perspective introduces an integrated approach that combines oxidation and reduction conversions of various substances in a single system by designing photocatalytic materials and systems. The ideal integrated photo(electro)catalytic process should fully utilize the oxidative and reductive powers of semiconductors to improve photoefficiency.
The global circulation and transformation of resource/energy and the self-cleaning of contaminated environments are largely driven by solar radiation through various photochemical and photosynthetic mechanisms. Photo(electro)catalysis is an active engineering method that mimics nature's solar conversion processes and is being intensively investigated as a key technology that can provide solutions for sustainable development. However, because the majority of photo(electro)catalysis is focused on the oxidative (or reductive) conversion of a target compound, which underutilizes the power of the counter charge carrier, the solar materials and reactions need to be systematically designed and implemented to make the photosystems more practically viable. This perspective describes an integrated approach that combines the oxidation and reduction conversions of various organic and inorganic substances in a single system by carefully designing photocatalytic materials and systems. The ideal integrated photo(electro)catalytic process should utilize both the oxidative and reductive powers of semiconductors in their full capacity to make the overall process more photoefficient and less demanding of external chemical inputs such as auxiliary oxidants and reductants. We introduce various photo(electro)catalytic redox conversions (e.g., reactive oxygen species, reactive halogen species, hydrogen peroxide, nitrate, and ammonium) and their combinations and discuss challenges and perspectives in realizing solar-based environmental remediation.
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