Bi2S3 anchored ZnS/ZnO nanorod arrays photoanode for enhanced visible light driven photo electrochemical properties

Sadhasivam, S.; Anbarasan, N.; Mukilan, Murugan; Palanisamy, Masilamani; Jeganathan, K.

doi:10.1016/j.ijhydene.2020.08.026

Cited by 25 publications

(14 citation statements)

References 48 publications

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“…Figure a shows the Zn 2p core-level XP spectrum, wherein the doublet at binding energies (B.E.s) of 1045.1 and 1021.9 eV is attributed to the Zn 2p 1/2 and Zn 2p 3/2 emission lines, respectively. The splitting of 23.2 eV between the Zn 2p 1/2 and Zn 2p 3/2 features is in line with reports in the literature, indicating Zn in the ZnS/Bi 2 S 3 /ZnO NRs having a divalent state. , The asymmetric line shape of the contribution in the O 1s core-level XPS spectrum is the convolution of two components at B.Es. of 531.6 and 530.2 eV, respectively (Figure b).…”

Section: Resultssupporting

confidence: 91%

“…The splitting of 23.2 eV between the Zn 2p 1/2 and Zn 2p 3/2 features is in line with reports in the literature, indicating Zn in the ZnS/Bi 2 S 3 /ZnO NRs having a divalent state. 36,37 The asymmetric line shape of the contribution in the O 1s core-level XPS spectrum is the convolution of two components at B.Es. of 531.6 and 530.2 eV, respectively (Figure 4b).…”

Section: Structural and Compositional Characterizationmentioning

confidence: 99%

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Highly Efficient Recovery of H₂ from Industrial Waste by Sunlight-Driven Photoelectrocatalysis over a ZnS/Bi₂S₃/ZnO Photoelectrode

Popescu

Gerthsen

et al. 2022

ACS Appl. Mater. Interfaces

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Hydrogen (H 2 ) fuel production from hazardous contaminants is not only of economic importance but also of significance for the environment and health. Hydrogen production is exemplified in this work by using bismuth sulfide (Bi 2 S 3 ) sandwiched in between zinc sulfide (ZnS) and zinc oxide (ZnO) as dual-heterojunction photoelectrode to photoelectrochemically extract H 2 from sulfide-and sulfite-containing wastewater, which is emitted in enormous quantities from the petrochemical industries. The H 2 evolution rate over the ZnS/Bi 2 S 3 /ZnO photoelectrode under solar illumination amounts to 112.8 μmol cm −2 h −1 , of which the photocurrent density in the meantime reaches 10.7 mA cm −2 , by far exceeding those reported for additional Bi 2 S 3 -based counterparts in the literature. Such superior performance is ascribed on one hand to the broadband sunlight-harvesting ability of Bi 2 S 3 that gives rise to respectable photoexcited electron−hole pairs. These photogenerated charge carriers are subsequently rectified by the built-in electric field at the ZnS/Bi 2 S 3 and Bi 2 S 3 /ZnO heterojunctions to flow in the opposite directions to well circumvent the recombination losses and, most importantly, in turn contribute substantially to the H 2 evolution reaction.

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Section: Resultssupporting

confidence: 91%

Section: Structural and Compositional Characterizationmentioning

confidence: 99%

Highly Efficient Recovery of H₂ from Industrial Waste by Sunlight-Driven Photoelectrocatalysis over a ZnS/Bi₂S₃/ZnO Photoelectrode

Popescu

Gerthsen

et al. 2022

ACS Appl. Mater. Interfaces

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“…Forming dual-bandgap (heterojunction and homojunction) nanoarray structures that combine advantages of the two constituents has been recognized as another attractive method for promoting charge transport. [47,[186][187][188] In addition to having the advantages mentioned above for single-bandgap nanoarray structures, dual-bandgap nanoarray structures can also promote charge separation to minimize the energy-wasteful electronhole recombination owing to the built-in electric field formed at the interfacial region of two constituents. [176,189,190] Compared to the single-bandgap systems, dual-bandgap systems with an ideal theoretical efficiency of 41% are more likely to achieve the minimum efficiency requirement of 10% for practical solar water splitting.…”

Section: Dual-bandgap Nanoarray Structuresmentioning

confidence: 99%

Nanoarray Structures for Artificial Photosynthesis

Tian

Zhao

et al. 2021

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Conversion and storage of solar energy into fuels and chemicals by artificial photosynthesis has been considered as one of the promising methods to address the global energy crisis. However, it is still far from the practical applications on a large scale. Nanoarray structures that combine the advantages of nanosize and array alignment have demonstrated great potential to improve solar energy conversion efficiency, stability, and selectivity. This article provides a comprehensive review on the utilization of nanoarray structures in artificial photosynthesis of renewable fuels and high value‐added chemicals. First, basic principles of solar energy conversion and superiorities of using nanoarray structures in this field are described. Recent research progress on nanoarray structures in both abiotic and abiotic–biotic hybrid systems is then outlined, highlighting contributions to light absorption, charge transport and transfer, and catalytic reactions (including kinetics and selectivity). Finally, conclusions and outlooks on future research directions of nanoarray structures for artificial photosynthesis are presented.

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Section: Introductionmentioning

confidence: 99%

“…[21] MoS 2 and Bi 2 S 3 are considered desirable catalysts or cocatalysts in the photocatalytic system due to their morphology tuning and low bandgaps, which improve their light harvesting, optical properties, and charge mechanism transfer. [13,[22][23][24][25][26][27][28][29] Multidimensional structure architecture results in a higher surface area and optimal interfacial interaction of semiconducting photocatalysts, contributing to higher photocatalytic efficiency by accelerating electron and hole transportation, and impeding their recombination. [11,24,[30][31][32] The conversion of CO 2 to a specific product is highly desirable for energy conversion.…”

mentioning

confidence: 99%

Construction of Bi₂S₃/TiO₂/MoS₂ S‐Scheme Heterostructure with a Switchable Charge Migration Pathway for Selective CO₂ Reduction

et al. 2021

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Switching between the redox potential of an appropriate semiconductor heterostructure could show critical applications in selective CO2 reduction. Designing a semiconductor photocatalyst with a wavelength‐dependent response is an effective strategy for regulating the direction of electron flow and tuning the redox potential. Herein, the switching mechanism between two charge migration pathways and redox potentials in a Bi2S3/TiO2/MoS2 heterostructure by regulating the light wavelength is achieved. In situ irradiated X‐ray photoelectron spectroscopy (ISI‐XPS), electron spin resonance (ESR), photoluminescence (PL), and experimental scavenger analyses prove that the charge transport follows the S‐scheme approach under UV–vis–NIR irradiation and the heterojunction approach under vis–NIR irradiation, confirming the switchable feature of the Bi2S3/TiO2/MoS2 heterostructure. This switchable feature leads to the reduction of CO2 molecules to CH3OH and C2H5OH under UV–vis–NIR irradiation, while CH4 and CO are produced under Vis–NIR irradiation. Interestingly, the apparent quantum efficiency of the optimal composite at λ = 600 nm is 4.23%. This research work presents an opportunity to develop photocatalysts with switchable charge transport and selective CO2 reduction.

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Bi2S3 anchored ZnS/ZnO nanorod arrays photoanode for enhanced visible light driven photo electrochemical properties

Cited by 25 publications

References 48 publications

Highly Efficient Recovery of H₂ from Industrial Waste by Sunlight-Driven Photoelectrocatalysis over a ZnS/Bi₂S₃/ZnO Photoelectrode

Highly Efficient Recovery of H₂ from Industrial Waste by Sunlight-Driven Photoelectrocatalysis over a ZnS/Bi₂S₃/ZnO Photoelectrode

Nanoarray Structures for Artificial Photosynthesis

Construction of Bi₂S₃/TiO₂/MoS₂ S‐Scheme Heterostructure with a Switchable Charge Migration Pathway for Selective CO₂ Reduction

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Bi2S3 anchored ZnS/ZnO nanorod arrays photoanode for enhanced visible light driven photo electrochemical properties

Cited by 25 publications

References 48 publications

Highly Efficient Recovery of H2 from Industrial Waste by Sunlight-Driven Photoelectrocatalysis over a ZnS/Bi2S3/ZnO Photoelectrode

Highly Efficient Recovery of H2 from Industrial Waste by Sunlight-Driven Photoelectrocatalysis over a ZnS/Bi2S3/ZnO Photoelectrode

Nanoarray Structures for Artificial Photosynthesis

Construction of Bi2S3/TiO2/MoS2 S‐Scheme Heterostructure with a Switchable Charge Migration Pathway for Selective CO2 Reduction

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Highly Efficient Recovery of H₂ from Industrial Waste by Sunlight-Driven Photoelectrocatalysis over a ZnS/Bi₂S₃/ZnO Photoelectrode

Highly Efficient Recovery of H₂ from Industrial Waste by Sunlight-Driven Photoelectrocatalysis over a ZnS/Bi₂S₃/ZnO Photoelectrode

Construction of Bi₂S₃/TiO₂/MoS₂ S‐Scheme Heterostructure with a Switchable Charge Migration Pathway for Selective CO₂ Reduction