Copper sulfides based photocatalysts for degradation of environmental pollution hazards: A review on the recent catalyst design concepts and future perspectives

Sudhaik, Anita; Raizada, Pankaj; Rangabhashiyam, S.; Singh, Archana; Nguyen, Van‐Huy; Le, Quyet Van; Khan, Aftab Aslam Parwaz; Hu, Chechia; Huang, Chao-Wei; Ahamad, Tansir; Singh, Pardeep

doi:10.1016/j.surfin.2022.102182

Cited by 39 publications

(12 citation statements)

References 120 publications

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“…Further, the diffused reflectance spectra of the SA-CuS samples were collected to analyze the band gap of the SA-CuS, as shown in Figure a. The band gap of ∼1.6 eV was estimated for SA-CuS@pH7.4 and SA-CuS@pH10 using the Kubelka–Munk method. , However, when the pH was increased to 13 (i.e., SA-CuS@pH13), the band gap was approximated to be ∼1.9 eV. Further, ultraviolet photoelectron spectroscopy (UPS) was used to understand the work function and the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) of the SA-CuS photocatalyst (Figure S7).…”

Section: Resultsmentioning

confidence: 99%

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

2023

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The use of visible light to propel chemical reactions is an exciting area of study that is crucial in the current socioeconomic environment. However, various photocatalysts have been developed to harness visible light, which consume high energy during synthesis. Thus, synthesizing photocatalysts at gel–liquid interfaces in ambient conditions is of scientific importance. Herein, we report an environmentally benign sodium alginate gel being used as a biopolymer template to synthesize copper sulfide (CuS) nanostructures at the gel–liquid interface. The driving force for the synthesis of CuS nanostructures is varied by changing the pH of the reaction medium (i.e., pH 7.4, 10, and 13) to tailor the morphology of CuS nanostructures. The CuS nanoflakes obtained at pH 7.4 transform into nanocubes when the pH is raised to 10, and the nanostructures deform at the pH of 13. Fourier transform infrared spectroscopy (FTIR) confirms all the characteristic stretching of sodium alginate, whereas the CuS nanostructures are crystallized in a hexagonal crystal system, as revealed by the powder X-ray diffraction analysis. The high-resolution X-ray photoelectron spectroscopy (XPS) spectra show the +2 and −2 oxidation states of copper (Cu) and sulfur (S) ions, respectively. The CuS nanoflakes physisorbed a higher concentration of greenhouse CO2 gas. Owing to a lower band gap of CuS nanoflakes synthesized at a pH of 7.4, compared to other CuS nanostructures prepared at pH 10 and 13, CuS photocatalytically degrades 95% of crystal violet and 98% of methylene blue aqueous dye solutions in 60 and 90 min, respectively, under blue light illumination. Additionally, sodium alginate–copper sulfide (SA-CuS) nanostructures synthesized at a pH of 7.4 demonstrate excellent performance in photoredox reactions to convert ferricyanide to ferrocyanide. The current research opens the door to developing new photocatalytic pathways for a wide range of photochemical reactions involving nanoparticle-impregnated alginate composites prepared on gel interfaces.

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Section: Resultsmentioning

confidence: 99%

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

2023

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“…They are widely used in photocatalysis, electrocatalysis, lithium batteries, capacitors, and bacterial mineralization. − These are closely related to their advantages such as low cost, a simple production process, low storage conditions and strong physical and chemical stabilities. These sulfides can be divided into three types: CuS, Cu x S (1 < x < 2), and Cu 2 S. According to current reports, Cu x S (1 < x < 2) includes but is not limited to the following types: Cu 1.12 S, Cu 1.40 S, Cu 1.60 S, Cu 1.75 S, Cu 1.8 S, and Cu 1.90 S. − Several typical crystal structures are shown in Figure a. Theoretically, CuS, Cu x S (1 < x < 2), and Cu 2 S are suitable photocatalysts.…”

Section: Synthesis Of Cu-based Semiconductor Nanomaterialsmentioning

confidence: 99%

“…The loading of precious metals promotes the effective separation of photogenerated carriers through quantum effects and excellent surface properties. It has been reported that the loading of single atoms on the semiconductor surface can effectively improve charge sensitivity, improve electrical conductivity, and expand light absorption. ,, …”

Section: Application Of Cu-based Semiconductor Nanomaterials In Photo...mentioning

confidence: 99%

“…Photocatalytic mechanisms showing different types: (a) Type-I (straddling) heterostructure, (b) Type-II (staggered) heterostructure, (c) Type-III (broken) heterostructure, (d) p–n junction, (e) all-solid-state Z-scheme, and (f) direct Z-scheme. Reproduced with permission from ref . Copyright 2022 Elsevier.…”

Section: Application Of Cu-based Semiconductor Nanomaterials In Photo...mentioning

confidence: 99%

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Design, Synthesis, and Diverse Applications of Cu-Based Photocatalysts: A Review

Du,

Tang,

et al. 2024

Crystal Growth & Design

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With the increasing variety of Cu-based semiconductor nanomaterials and the development of synthesis technology, the crystal shape and morphology of semiconductor materials have become controllable factors. Due to their low price, abundant reserves, and suitable band gap, Cu-based semiconductor nanomaterials have bright application prospects for the treatment of photocatalytic environments. A comprehensive summary of the basic theory and research progress of Cu-based semiconductor nanomaterials, such as crystal design, morphology control, and photocatalytic modification strategies and mechanisms, is indispensable. However, a comprehensive review of this aspect has not been reported recently. This review summarizes the synthetic methods of copper oxides (CuO, Cu 2 O), copper sulfides (CuS, Cu x S, Cu 2 S), copper selenides (CuSe, Cu 2−x Se, Cu 2 Se), as well as other novel Cu-based semiconductor nanomaterials such as CuFe 2 O 4 , Cu 3 N, Cu 5 V 2 O 10 , CuCo 2 O 4 , CuWO 4 , Cu 3 P, and the application strategies and mechanisms in photocatalytic removal of pollutants, photocatalytic hydrogen evolution, and photocatalytic reduction of CO 2 . The summary of synthesis methods and crystal surface control is beneficial for the preparation of better catalysts. We firmly believe that this review can provide valuable information for the further development of Cu-based semiconductor nanomaterials.

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“…In the past years, 2D materials have shown promising results towards the removal of pollutants present in water. 12,13 Among this family of 2D materials, while carbon-based materials are well explored, the nanosheets of hBN, which are also called white graphene, are still not very well studied and tested for the above-mentioned application. 14 The unique properties of hBN like significant surface area, high chemical stability, polarity of the B-N bond, presence of high structural defects, and ease of doping with other transition series metal ions make it an emerging material for the treatment of contamination of water.…”

Section: Introductionmentioning

confidence: 99%

Functional hBN decorated Ni(OH)₂ nanosheets synthesized for remarkable adsorption performance for the elimination of fluoride ions

Choudhary¹,

Singh²,

Giri³

et al. 2023

Dalton Trans.

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Copper sulfides based photocatalysts for degradation of environmental pollution hazards: A review on the recent catalyst design concepts and future perspectives

Cited by 39 publications

References 120 publications

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

Design, Synthesis, and Diverse Applications of Cu-Based Photocatalysts: A Review

Functional hBN decorated Ni(OH)₂ nanosheets synthesized for remarkable adsorption performance for the elimination of fluoride ions

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Copper sulfides based photocatalysts for degradation of environmental pollution hazards: A review on the recent catalyst design concepts and future perspectives

Cited by 39 publications

References 120 publications

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

Design, Synthesis, and Diverse Applications of Cu-Based Photocatalysts: A Review

Functional hBN decorated Ni(OH)2 nanosheets synthesized for remarkable adsorption performance for the elimination of fluoride ions

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Functional hBN decorated Ni(OH)₂ nanosheets synthesized for remarkable adsorption performance for the elimination of fluoride ions