Topic
Photochemistry
About: Photochemistry is a research topic. Over the lifetime, 1 publications have been published within this topic.
Papers
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TL;DR: In this paper , a photo-Fenton system for the degradation of tetracycline (TC) was designed to improve the H2O2 decomposition performance of the Z-scheme heterojunction.
Abstract: Herein, Fe-g-C3N4/Bi2WO6 Z-scheme heterojunction is elaborately designed to build a photo-Fenton system for the degradation of tetracycline (TC). In this study, the H2O2 decomposition performance of the Z-scheme heterojunction has been improved due to the doping of iron, improve photogenerated electrons transportability and facilitate spread of radicals, according to the efficacy analyses, and trapping experiment, ESR analysis as well as degradation pathways of TC. Moreover, DFT theoretical results suggest that the Z-scheme transfer route coupled with the generated photo–Fenton process builds a Z-scheme-charge-transfer platform for remarkable degradation of emerging pollutants, and the formation of Fe-N4 sites induces a spin polarization of the material and also introduces a defect state in the original forbidden band, which leads to extremely activity for the removal of TC in the photo-Fenton system. The study shows that 1O2 and •O2− are the main active species participating in the degradation process.
155 citations
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TL;DR: In this paper , tetra (4-carboxyphenyl) porphyrin (TCPP) and graphene quantum dots (GQDs) were loaded on the surface of Bi2MoO6 (BMO) to fabricate novel Z-scheme heterojunctions of TCPP/G/BMO.
115 citations
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TL;DR: In this paper, a peroxymonosulfate (PMS) activation system employing the SA Co-N-C(30) as a high-efficiency catalyst was demonstrated, which can efficiently degrade CQP in a wide pH range (3-11).
105 citations
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TL;DR: In this paper , a peroxymonosulfate (PMS) activation system employing the SA Co-N-C(30) as a high-efficiency catalyst was demonstrated, which can efficiently degrade CQP in a wide pH range (3-11).
105 citations
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TL;DR: In this paper , a synergistic function between single Pd atoms (Pd1) and Pd nanoparticles(PdNPs) on graphitic carbon nitride (C3N4) for photocatalytic CO2 methanation is presented.
Abstract: Selective photoreduction of carbon dioxide (CO2) into carbon‐neutral fuels such as methane (CH4) is extremely desirable but remains a challenge since sluggish multiple proton–electron coupling transfer and various C1 intermediates are involved. Herein, a synergistic function between single Pd atoms (Pd1) and Pd nanoparticles (PdNPs) on graphitic carbon nitride (C3N4) for photocatalytic CO2 methanation is presented. The catalyst achieves a high selectivity of 97.8% for CH4 production with a yield of 20.3 µmol gcat.−1 h−1 in pure water. Mechanistic studies revealed that Pd1 sites activated CO2, while PdNPs sites boosted water (H2O) dissociation for increased H* coverage. The H* produced by PdNPs migrate to the Pd1 sites to promote multiple proton–electron coupling transfer via hydrogen spillover. Moreover, the adjacent Pd1 and PdNPs effectively stabilized intermediates such as *CHO, thereby favoring the pathway for CH4 production. This work provides a new perspective into the development of selective photocatalytic CO2 conversion through the artful design of synergistic catalytic sites.
102 citations