Novel method of square wave voltammetry for deposition of Bi2S3 thin film: Photocatalytic reduction of hexavalent Cr in single and binary mixtures

Chahkandi, Mohammad; Zargazi, Mahboobeh

doi:10.1016/j.jhazmat.2019.120879

Cited by 37 publications

(14 citation statements)

References 44 publications

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“…In the last few decades, rapid industrialization of electroplating, leather making, and pigment processing technologies has led to the release of increasing amounts of Cr 6+ into the with a narrow bandgap (≈1.3 eV), can be synthesized with good crystallinity through facile one-pot hydrothermal method, and was demonstrated to form heterojunction with In 2 S 3 . [20,21] For instance, Fu et al fabricated hierarchical Bi 2 S 3 nanoflower/ In 2 S 3 nanosheet composites with high visible-light photocatalytic activity through a one-step synthesis method. [22] Similarly, hierarchical Bi 2 S 3 /In 2 S 3 core-shell microspheres were fabricated by Fu and co-workers through growth rate controlled process with enhanced photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Bi₂S₃–In₂S₃ Heterostructures for Efficient Photoreduction of Highly Toxic Cr⁶⁺ Enabled by Facet‐Coupling and Z‐Scheme Structure

Wang

Karuturi

Zan

2021

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environment, which is defined as one of most toxic pollutants by the United States Environmental Protection Agency due to its high solubility. [1][2][3] With 100 times higher toxicity than Cr 3+ , Cr 6+ poses a great threat to the ecosystem, particularly from its biological recycling. [4] Thus the concentration of Cr 6+ in industrial wastewater needs to be strictly controlled before it can be safely discharged. Many methodsThe ORCID identification number(s) for the author(s) of this article can be found under

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Section: Introductionmentioning

confidence: 99%

Bi₂S₃–In₂S₃ Heterostructures for Efficient Photoreduction of Highly Toxic Cr⁶⁺ Enabled by Facet‐Coupling and Z‐Scheme Structure

Wang

Karuturi

Zan

2021

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“…The exploitation of photocatalysts is one of the keys to realize the high‐performance application of photocatalytic technology 10‐12 . Up to now, various semiconductor photocatalysts have been developed, including metal oxides (TiO 2 , Bi 2 O 3 , etc), 13‐16 metal sulfides (MoS 2 , Bi 2 S 3 , etc), 17‐21 multi‐component oxides (Bi 2 WO 6 , SrTiO 3 , etc), 22‐25 metal selenides (MoSe 2 , CdSe, etc), 26‐29 metal phosphides (Co 2 P, Ni 2 P, etc), 30‐32 metal phosphates (Ag 3 PO 4 , BiPO 4 , etc), 33,34 metal halides (AgBr, etc), 35‐37 metal oxyhalides (BiOBr, BiOCl, etc), 38‐40 metal‐free materials (SiC, g‐C 3 N 4 , etc) 41‐43 and so on. Among them, the semiconductor with a band gap of Eg ≥ 3 eV are called wide‐band‐gap photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Bi‐based photocatalysts for light‐driven environmental and energy applications: Structural tuning, reaction mechanisms, and challenges

Chen

Liu

Cui

et al. 2020

EcoMat

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Environmental pollution and energy crisis have become major challenges to sustainable development of human society. Solar-driven photocatalytic technology is regarded as an extremely attractive solution to environmental remediation and energy conversion. Unfortunately, practical applications of traditional photocatalysts are restricted owing to the poor absorption of visible light, insufficient charge separation and undefined reaction mechanism. Therefore, developing novel visible light photocatalysts and exploring their modification strategies are significant in the area of photocatalysis. Bi-based photocatalysts have attracted wide attention due to unique geometric structures, tunable electronic structure and decent photocatalytic activity under visible light. At present, Bi-based photocatalysts can be mainly classified as bismuth metal, binary oxides, bismuth oxyhalogen, multicomponent oxides and binary sulfides, and so forth. Although they can be used as independent photocatalysts for environmental purification and energy development, their efficiency is not ideal. Therefore, many efforts have been made to enhance their photocatalytic performance in the past few decades. Significant progresses in determining the fundamental properties of photocatalysts, improving the photocatalytic performance and understanding the photocatalytic mechanism in important reactions have been made benefited from the various new developed concepts and approaches. This review introduces the structural properties of Bi-based photocatalysts in detail and summarizes the design and modification strategy for improving the photocatalytic performance, including metal/ Peng Chen and Hongjing Liu contributed equally to this work.

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“…As for S 2s (Fig. 4(f)), a broad peak at 225.0 eV can be attributed to the metal sulfide [25] . The optical absorption properties of the prepared samples were investigated by UV-vis diffuse reflectance spectrometer and presented in Fig.…”

Section: Photocatalytic Activitymentioning

confidence: 86%

CuS Nanosheet Decorated Bi₅O₇I Composite for the Enhanced Photocatalytic Reduction Activity of Aqueous Cr(VI)

Miao¹,

Chen²,

Zeng³

et al. 2021

Journal of Inorganic Materials

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Photocatalytic approach has been extensively explored to remove toxic Cr(VI) in wastewater owing to its high efficient, safe and low cost features. Fabricating semiconductor composite is supposed to be an effective approach to improve the poor photocatalytic activity of single component. The aim of this work was to synthesize, characterize and evaluate the photocatalytic activity of CuS nanosheets decorated CuS/Bi5O7I composites. The photocatalyst was prepared by a simple hydrothermal method, and characterized by different methods. Compared to pure Bi5O7I microrods and CuS nanoparticles, the as-prepared CuS/Bi5O7I composites exhibits more efficient photocatalytic reduction of aqueous Cr(VI). The reaction rate constant of 15wt% CuS/Bi5O7I catalyst was 20 times and 4.3 times of that of pristine Bi5O7I and CuS, respectively. BET, photoluminescence and EIS spectra measurement demonstrate that the improved photocatalytic activity may be attributed to the higher surface areas, broader light absorption region, improved separation and transfer efficiency of photo-induced electron-hole pairs. Moreover, a possible photocatalytic mechanism of CuS/ Bi5O7I catalyst is also proposed.

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Novel method of square wave voltammetry for deposition of Bi2S3 thin film: Photocatalytic reduction of hexavalent Cr in single and binary mixtures

Cited by 37 publications

References 44 publications

Bi₂S₃–In₂S₃ Heterostructures for Efficient Photoreduction of Highly Toxic Cr⁶⁺ Enabled by Facet‐Coupling and Z‐Scheme Structure

Bi₂S₃–In₂S₃ Heterostructures for Efficient Photoreduction of Highly Toxic Cr⁶⁺ Enabled by Facet‐Coupling and Z‐Scheme Structure

Bi‐based photocatalysts for light‐driven environmental and energy applications: Structural tuning, reaction mechanisms, and challenges

CuS Nanosheet Decorated Bi₅O₇I Composite for the Enhanced Photocatalytic Reduction Activity of Aqueous Cr(VI)

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Novel method of square wave voltammetry for deposition of Bi2S3 thin film: Photocatalytic reduction of hexavalent Cr in single and binary mixtures

Cited by 37 publications

References 44 publications

Bi2S3–In2S3 Heterostructures for Efficient Photoreduction of Highly Toxic Cr6+ Enabled by Facet‐Coupling and Z‐Scheme Structure

Bi2S3–In2S3 Heterostructures for Efficient Photoreduction of Highly Toxic Cr6+ Enabled by Facet‐Coupling and Z‐Scheme Structure

Bi‐based photocatalysts for light‐driven environmental and energy applications: Structural tuning, reaction mechanisms, and challenges

CuS Nanosheet Decorated Bi5O7I Composite for the Enhanced Photocatalytic Reduction Activity of Aqueous Cr(VI)

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Product

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Bi₂S₃–In₂S₃ Heterostructures for Efficient Photoreduction of Highly Toxic Cr⁶⁺ Enabled by Facet‐Coupling and Z‐Scheme Structure

Bi₂S₃–In₂S₃ Heterostructures for Efficient Photoreduction of Highly Toxic Cr⁶⁺ Enabled by Facet‐Coupling and Z‐Scheme Structure

CuS Nanosheet Decorated Bi₅O₇I Composite for the Enhanced Photocatalytic Reduction Activity of Aqueous Cr(VI)