Construction of heterojunction Bi/Bi5O7I/Sn3O4 for efficient noble-metal-free Z-scheme photocatalytic H2 evolution

Xu, Longya; Chen, Wenqian; Ke, Shu-qiang; Zhang, Shaomei; Zhu, Min; Zhang, Yu; Shi, Wenyan; Horike, Satoshi; Tang, Liang

doi:10.1016/j.cej.2019.122810

Cited by 52 publications

(10 citation statements)

References 52 publications

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“…For instance, metallic Bi acts as a cocatalyst to improve the PHE in Bi/Bi 5 O 7 I/Sn 3 O 4 compared to the unmodified photocatalyst. 98 The PHE of the material was up to 326 μmol h −1 g −1 , which was 5 times higher than that of Sn 3 O 4 . If the loaded cocatalyst is earth abundant, cheap, nontoxic, enhances PHE, and can be recycled/reused, then the strategy of loading cocatalysts onto bismuth oxyhalides will enhance the overall material's sustainability.…”

Section: ■ Raw Materialsmentioning

confidence: 82%

Sustainable Production of Layered Bismuth Oxyhalides for Photocatalytic H₂ Production

Gordon

Chatterjee

Beena

et al. 2022

ACS Sustainable Chem. Eng.

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Bismuth oxyhalides (BiaObXc X = Cl, Br, I) are promising layered photocatalysts that can produce H2 using solar light. The layered crystal structures minimize electron–hole recombinations in these materials and provide compositional flexibilities that allow for band gap tuning. Current literature highlights developments in synthetic routes and improved performance metrics; however, an analysis of the sustainability of these compounds is missing. In this Perspective, we use the life cycle assessment framework as a guide to evaluate the sustainability of each stage of the bismuth oxyhalide life cycle, from raw material extraction (mining, refinement, purification) all the way through the end of the material’s life and consider ways to recycle and/or reuse the spent photocatalyst. Here, we gather and unite information from the bismuth oxyhalide field with information from the sustainability literature in the first attempt to evaluate the sustainabilities of these materials as photocatalysts for H2 production. We present our own perspective on the future of the field and make recommendations for researchers interested in this class of materials and photocatalysts more broadly.

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Section: ■ Raw Materialsmentioning

confidence: 82%

Sustainable Production of Layered Bismuth Oxyhalides for Photocatalytic H₂ Production

Gordon

Chatterjee

Beena

et al. 2022

ACS Sustainable Chem. Eng.

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“…As for the pristine CdS, the main diffraction peaks located at 2θ values of 24.76, 26.43, 28.10, 43.70, 47.79, and 51.83°indicate that the as-prepared CdS nanoparticles have a hexagonal structure (JCPDS 41-1049). 37 For metallic Mo nanoparticles, the main characteristic peaks at 40.31, 58.59, and 73.70°are well indexed to the (110), (200), and (211) planes of cubic Mo (JCPDS 42-1120), respectively. 28 No additional peaks related to impurities can be observed, suggesting the high purity of CdS and Mo nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

CdS/Metallic Mo Hybrid Photocatalysts with Highly Active Interfacial Mo–O–S Active Sites for Efficient Photocatalytic Hydrogen Evolution under Visible Light

et al. 2020

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Engineering an intimate interface with abundant active sites between a semiconductor and a cocatalyst is highly attractive in facilitating the charge separation and thus photocatalytic H 2 evolution performance of the resultant hybrid photocatalyst. Herein, we demonstrate that hybridizing CdS with metallic Mo nanoparticles leads to CdS/Mo photocatalysts with abundant interfacial Mo−O−S active sites resulting from the in situ reaction of surface S on CdS with native MoO x on Mo nanoparticles. The CdS/Mo hybrids exhibit a 23 times higher H 2 evolution rate (30.1 mmol h −1 g −1 ) than pristine CdS under visible light irradiation (≥420 nm), and the highest apparent quantum efficiency (AQE) obtained at 420 nm is as high as 43.2%. Interfacial Mo−O−S species are revealed to play an important role in promoting the charge separation on CdS and also serve as active sites for the H 2 evolution reaction. In parallel, comparative experiments indicate that the hybrid photocatalyst of metallic Mo with surface S-free TiO 2 or g-C 3 N 4 hardly exhibits enhanced H 2 evolution activities, further highlighting the important cocatalytic role of the in situ generated interfacial Mo−O−S active sites in photocatalytic H 2 evolution on CdS/Mo photocatalysts. This work emphasizes the potential of interfacial engineering in designing highly efficient photocatalysts for solar energy conversion.

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“…The tests were carried out with a conventional three-electrode system consisting of platinum-sheet electrode, saturated calomel electrode (SCE) and conductive glass coated with sample powder, which served as counter electrode, reference electrode and working electrode, respectively. The working electrode was prepared by a method which is similar to the literature reported by Ling et al 37 The ca. 10 mg catalyst and 5 w% solution of polyvinylidene fluoride in N -methyl pyrrolidone solution were fully grinded in a ratio of 9 : 1, and then coated on the conductive surface of conductive glass for vacuum drying at 60 °C for 12 h. Meanwhile, 0.5 M Na 2 SO 4 solution was used as the electrolyte.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of ZnIn₂S₄@Co₃S₄ particles derived from ZIF-67 for photocatalytic hydrogen production

et al. 2021

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Construction of heterojunction Bi/Bi5O7I/Sn3O4 for efficient noble-metal-free Z-scheme photocatalytic H2 evolution

Cited by 52 publications

References 52 publications

Sustainable Production of Layered Bismuth Oxyhalides for Photocatalytic H₂ Production

Sustainable Production of Layered Bismuth Oxyhalides for Photocatalytic H₂ Production

CdS/Metallic Mo Hybrid Photocatalysts with Highly Active Interfacial Mo–O–S Active Sites for Efficient Photocatalytic Hydrogen Evolution under Visible Light

Synthesis of ZnIn₂S₄@Co₃S₄ particles derived from ZIF-67 for photocatalytic hydrogen production

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Construction of heterojunction Bi/Bi5O7I/Sn3O4 for efficient noble-metal-free Z-scheme photocatalytic H2 evolution

Cited by 52 publications

References 52 publications

Sustainable Production of Layered Bismuth Oxyhalides for Photocatalytic H2 Production

Sustainable Production of Layered Bismuth Oxyhalides for Photocatalytic H2 Production

CdS/Metallic Mo Hybrid Photocatalysts with Highly Active Interfacial Mo–O–S Active Sites for Efficient Photocatalytic Hydrogen Evolution under Visible Light

Synthesis of ZnIn2S4@Co3S4 particles derived from ZIF-67 for photocatalytic hydrogen production

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Sustainable Production of Layered Bismuth Oxyhalides for Photocatalytic H₂ Production

Sustainable Production of Layered Bismuth Oxyhalides for Photocatalytic H₂ Production

Synthesis of ZnIn₂S₄@Co₃S₄ particles derived from ZIF-67 for photocatalytic hydrogen production