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Summary: A Bi2S3/g-C3N4 heterojunction photocatalyst has been developed for efficiently decomposing toxic organic pollutants using natural sunlight. The Bi2S3/g-C3N4 heterojunction enhances the photocatalytic efficiency by broadening the optical reactivity and enhancing charge-carrier transportation. The decomposition rate of rhodamine B dye on CNBiS10 nanoparticles is four times higher than that of pristine g-C3N4 and Bi2S3 nanoparticles under natural solar radiations.
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Summary: Photocatalysis is a promising technology that converts solar energy into chemical energy. In this research, an S-scheme heterojunction was constructed by combining CeO2 nanoparticles and AgIO4 nanorods, resulting in strong oxidative and reductive power. The fabricated heterojunctions showed high efficiency in decomposing RhB dye, and the S-scheme mechanism explained the charge transport and redox power generation. The research provides valuable insights for the fabrication of heterojunctions for water pollutant eradication.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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Liuyang Zhang et al.
Summary: This article presents the superiority and design criteria of the emerging S-scheme heterojunction in photocatalysis. By overcoming the challenges faced by single photocatalysts through the construction of heterojunctions, the S-scheme heterojunction has demonstrated its potential in improving photocatalysis. The critical understanding of the curved Fermi level in the S-scheme heterojunction interface and the current challenges and prospects of S-scheme heterojunction photocatalysts are also discussed.
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Zi-Jun Chen et al.
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INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Review
Chemistry, Physical
Wangwei Ren et al.
Summary: Semiconductor heterojunctions, especially SnO2/g-C3N4 heterojunction, have great potential in the field of photocatalysis, especially visible-light-driven photocatalysis. This review summarizes the synthesis methods of SnO2/g-C3N4 heterojunction and highlights the modification strategies of morphology control, defect introduction, and multiple structural optimization. Furthermore, the possible mechanisms and applications of SnO2/g-C3N4 heterojunction in environment remediation and energy conversion are discussed, along with the challenges and perspectives.
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Summary: In this study, a magnetically recoverable photocatalyst of Fe3O4@CdS@CQDs ternary core-shell heterostructures was fabricated and applied for selective alcohol oxidation coupled with H2O2 production. The photocatalyst exhibited distinct advantages of full solar spectral absorption, efficient charge separation, and high stability, and showed excellent performance in converting benzyl alcohol to benzaldehyde accompanied with H2O2 production.
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Summary: A new opinion on general design standards for S-scheme heterojunction photocatalyst was recently presented, and four types of S-scheme heterojunctions were analyzed. Specifically, the critical understanding of the curved Fermi level at the interface of S-scheme heterojunction contributes to strengthening and promoting the basic theory of photocatalysis.
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Summary: The challenge of converting intermittent sunlight energy into a low-cost alternative fuel source has been successfully addressed by synthesizing a novel polyaniline/g-C(3)N4 heterojunction, resulting in significant improvements in visible light absorption and limiting the electron-hole recombination rate during photocatalysis reactions. By incorporating 3 wt% polyaniline, the nanocomposite showed enhanced decomposition of bisphenol and higher evolution of hydrogen gas compared to pristine g-C3N4. The proposed S-scheme structure of polyaniline/g-C3N4 heterojunction demonstrated efficient transfer of photogenerated electrons, leading to the production of eco-friendly species.
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Soraya Ihaddaden et al.
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Zhichao Miao et al.
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Sie Shing Wong et al.
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Mohamed A. Ahmed et al.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
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Shugang Pan et al.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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Mohamed S. Hamdy et al.
Summary: Direct Z-scheme heterojunctions have shown exceptional reactivity in recent years in various photocatalytic processes. A hybrid polyaniline/ZnO heterojunction was synthesized for removal of fluorescein dye and production of hydrogen gas under visible light source. The key factor in optimizing hydrogen gas production and photocatalytic degradation is the amount of polyaniline. The results suggest that polyaniline enhances light absorption and provides additional electrons for the production of H2 gas.
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