Synergistic vacancy defects and bandgap engineering in an Ag/S co-doped Bi<sub>2</sub>O<sub>3</sub>-based sulfur oxide catalyst for efficient hydrogen evolution

Su, Zhengjie; Wu, Xinru; Kuo, Dong-Hau; Yang, Baoqian; Wu, Binghong; Chen, Longyan; Zhang, Pengkun; Lin, Jinguo; Lu, Dongfang; Chen, Xiaoyun

doi:10.1039/d3ta07726h

Cited by 16 publications

(1 citation statement)

References 66 publications

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“…The smaller the conduction band (CB) value of the photocatalyst, the better its ability to transfer electrons and the better it is for photocatalytic nitrogen xation. [61][62][63] From Fig. 4b, the band gap value (E g ) of CoTiOS-3 is 2.77 eV, and the valence band (E VB ) of CoTiOS-3 is calculated to be 2.43 eV according to the equation…”

Section: Optical Property Analysismentioning

confidence: 99%

Synergism of heterovalent valence state and oxygen vacancy defect engineering in Co/S co-doped TiO₂ for nitrogen photoreduction to ammonia

Chen,

Zhang,

Kuo

et al. 2024

J. Mater. Chem. A

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Section: Optical Property Analysismentioning

confidence: 99%

Synergism of heterovalent valence state and oxygen vacancy defect engineering in Co/S co-doped TiO₂ for nitrogen photoreduction to ammonia

Chen,

Zhang,

Kuo

et al. 2024

J. Mater. Chem. A

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Synergistic Hydrogen Peroxide‐Driven Cation Valence Regulation and La/O Co‐Doped SnS‐Based Oxysulfide Catalyst for Efficient Catalytic Reduction of Toxic Organics and Cr(VI) Under Dark

Zhang,

et al. 2024

Advanced Sustainable Systems

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A novel La/O co‐doped SnS oxysulfide catalyst (labeled SnLaOS) with heterovalent tin states and sulfur vacancy defects is successfully synthesized for effective catalytic reduction of toxic organics heavy metal ions with NaBH4 in the dark. La/O co‐doped and hydrogen peroxide‐driven SnLaOS catalyst with suitable heterovalent Sn2+/Sn4+ states and sulfur vacancy defects exhibited excellent catalytic reduction capability. The 100 mL 20 ppm of 4‐nitrophenol (4‐NP) and 50 ppm of rhodamine‐B (RhB), methylene blue (MB), methyl orange (MO), and Cr(VI) solution are entirely reduced by 5 mg SnLaOS‐3 within 10, 12, 12, 16, and 14 min, respectively, with durable stability. Synergistic transition metal La3+‐cation and O2−‐anion co‐doped SnS adjusted the energy bandgap and introduced sulfur vacancy defects, and the hydrogen peroxide‐driven regulated the SnLaOS with suitable Sn4+/Sn2+ states ratio. The sulfur vacancies in SnLaOS provide active sites for adsorbed proton for pollutants reduction, and heterovalent Sn2+/Sn4+ states in SnLaOS facilitates electrons efficient transfer through electron hopping between Sn2+ and Sn4+ for pollutants reduction. This study provides a novel efficient catalyst for the water pollutants treatment.

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Heterovalent State and Oxygen Vacancy Defect Structure‐Associated V/S Co‐Doped SnO₂ for Catalytic Reduction of Organic and Cr⁶⁺ Pollutants in the Dark

Yang,

Wu,

et al. 2024

Advanced Sustainable Systems

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V/S co‐doped SnO2 bimetal sulfur‐oxides catalysts labeled as (Sn,V)1‐x(S,O)2‐y or (SnVSO) with heterovalent state and oxygen vacancy defect are prepared via a green and facile method. The presence of SnVSO in the heterovalent states of Sn4+/Sn2+ and V5+/V4+ facilitates the rapid transfer of the electrons. It improves the electronic charge lifetime, accelerating the efficiency of the catalytic reduction of pollutants. The V/S co‐doped SnO2 regulates the bandgap energy structure. The hydrazine adjusts the heterovalent metal states to reduce Sn4+ to Sn2+ and V5+ to V4+. Also, it introduces oxygen vacancies to SnVSO to maintain the charge equilibrium and increase the active surface reactive sites, which enhance the catalytic activity. The SnVSO‐3 prepared with 0.4 mL hydrazine exhibits excellent catalytic activity, which wholly reduces 20 ppm of 100 mL methyl orange (MO), rhodamine B (RhB), methylene blue (MB), hexavalent chromium (Cr6+), and 4‐nitrophenol (4‐NP) within 6 min. In addition, the SnVSO‐3 also has good stability after repeated 6 runs with a reduction efficiency of 96.8%. Therefore, the V/S co‐doped SnO2 sulfur oxide catalysts have a promising potential for reducing Cr6+ and organic pollutants.

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Synergistic vacancy defects and bandgap engineering in an Ag/S co-doped Bi₂O₃-based sulfur oxide catalyst for efficient hydrogen evolution

Abstract: Herein, an Ag/S co-doped Bi2O3-based sulfur oxide catalyst (labeled as BiAgSO) was prepared via a facile and green method. The BiAgSO catalyst with suitable Ag/S contents doping exhibited the super...

Cited by 16 publications

References 66 publications

Synergism of heterovalent valence state and oxygen vacancy defect engineering in Co/S co-doped TiO₂ for nitrogen photoreduction to ammonia

Synergism of heterovalent valence state and oxygen vacancy defect engineering in Co/S co-doped TiO₂ for nitrogen photoreduction to ammonia

Synergistic Hydrogen Peroxide‐Driven Cation Valence Regulation and La/O Co‐Doped SnS‐Based Oxysulfide Catalyst for Efficient Catalytic Reduction of Toxic Organics and Cr(VI) Under Dark

Heterovalent State and Oxygen Vacancy Defect Structure‐Associated V/S Co‐Doped SnO₂ for Catalytic Reduction of Organic and Cr⁶⁺ Pollutants in the Dark

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Synergistic vacancy defects and bandgap engineering in an Ag/S co-doped Bi2O3-based sulfur oxide catalyst for efficient hydrogen evolution

Abstract: Herein, an Ag/S co-doped Bi2O3-based sulfur oxide catalyst (labeled as BiAgSO) was prepared via a facile and green method. The BiAgSO catalyst with suitable Ag/S contents doping exhibited the super...

Cited by 16 publications

References 66 publications

Synergism of heterovalent valence state and oxygen vacancy defect engineering in Co/S co-doped TiO2 for nitrogen photoreduction to ammonia

Synergism of heterovalent valence state and oxygen vacancy defect engineering in Co/S co-doped TiO2 for nitrogen photoreduction to ammonia

Synergistic Hydrogen Peroxide‐Driven Cation Valence Regulation and La/O Co‐Doped SnS‐Based Oxysulfide Catalyst for Efficient Catalytic Reduction of Toxic Organics and Cr(VI) Under Dark

Heterovalent State and Oxygen Vacancy Defect Structure‐Associated V/S Co‐Doped SnO2 for Catalytic Reduction of Organic and Cr6+ Pollutants in the Dark

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Synergistic vacancy defects and bandgap engineering in an Ag/S co-doped Bi₂O₃-based sulfur oxide catalyst for efficient hydrogen evolution

Synergism of heterovalent valence state and oxygen vacancy defect engineering in Co/S co-doped TiO₂ for nitrogen photoreduction to ammonia

Synergism of heterovalent valence state and oxygen vacancy defect engineering in Co/S co-doped TiO₂ for nitrogen photoreduction to ammonia

Heterovalent State and Oxygen Vacancy Defect Structure‐Associated V/S Co‐Doped SnO₂ for Catalytic Reduction of Organic and Cr⁶⁺ Pollutants in the Dark