The room temperature synthesis of a CuO-Bi-BiOBr ternary Z-scheme photocatalyst for enhanced sunlight driven alcohol oxidation

Bisht, Narendra Singh; Mehta, S.P.S.; Sahoo, Nanda Gopal; Dandapat, Anirban

doi:10.1039/d1dt00158b

Cited by 22 publications

(20 citation statements)

References 75 publications

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“…Recent literature shows a few examples of Z-scheme composites based on copper oxides. The CuO-Bi-BiOBr system was studied for enhanced sunlight driven alcohol oxidation [ 189 ]. In this case, bismuth particles act as an electron mediator and connector between the BiOBr and CuO.…”

Section: Copper Oxide Based Materialsmentioning

confidence: 99%

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Baran¹,

Visibile

Busch

et al. 2021

Molecules

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This work aims at reviewing the most impactful results obtained on the development of Cu-based photocathodes. The need of a sustainable exploitation of renewable energy sources and the parallel request of reducing pollutant emissions in airborne streams and in waters call for new technologies based on the use of efficient, abundant, low-toxicity and low-cost materials. Photoelectrochemical devices that adopts abundant element-based photoelectrodes might respond to these requests being an enabling technology for the direct use of sunlight to the production of energy fuels form water electrolysis (H2) and CO2 reduction (to alcohols, light hydrocarbons), as well as for the degradation of pollutants. This review analyses the physical chemical properties of Cu2O (and CuO) and the possible strategies to tune them (doping, lattice strain). Combining Cu with other elements in multinary oxides or in composite photoelectrodes is also discussed in detail. Finally, a short overview on the possible applications of these materials is presented.

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Section: Copper Oxide Based Materialsmentioning

confidence: 99%

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Baran¹,

Visibile

Busch

et al. 2021

Molecules

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“…As displayed in Fig. 4a, the binding energies at 159.07 and 164.31 eV were are classi ed as Bi 4f 7/2 and Bi 4f 5/2 for the bulk BTO, suggesting Bi presented as trivalent oxidation state, while it was located at 158.79 eV and 164.09 eV for the AB-2, respectively (Bisht et al, 2021). The individual peaks at 26.06, 27.76 and 29.23 eV were elucidated as Ta 4f 7/2 , Ta 4f 5/2 of Ta 5+ and Ta 4f 5/2 of Ta 4+ oxidation state (Fig.…”

Section: Morphologies and Structure Of As-prepared Photocatalystsmentioning

confidence: 94%

“…Currently, tantalate photocatalysts have established substantial public attention in that the very positive VB involving tantalum (Ta) 5d orbital (Zhuk et al, 2022). Particularly, such as Bi 3 TaO 7 , the hybridized VB is priorly composed of O 2p and Bi 6s orbitals, causing a shrank band gap energy and an ultrahigh oxidative activity (Bisht et al, 2021, Geng et al, 2022. Additionally, Bi 3 TaO 7 possesses a tuning band gap of 2.76-2.87 eV that makes it absorb visible light (Song et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Facile construction of Z-scheme AgCl/Bi3TaO7 photocatalysts for effective removal of tetracycline under visible-light irradiation

Guo

et al. 2023

Environ Sci Pollut Res

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A string of AgCl/Bi 3 TaO 7 two-component composite was synthesized by hydrothermal and depositionprecipitation process initially. The photocatalytic activities of mixed-phase AgCl/Bi 3 TaO 7 were evaluated toward the decomposition of tetracycline (TC). Among these as-prepared materials, AgCl/Bi 3 TaO 7 nanocomposites when the molar ratio of baked materials between AgCl and Bi 3 TaO 7 was 1:5 presented the optimal photocatalytic quantum e ciency for TC dissociation (86.82%) with visible light exposure, which was 1.69 and 2.38 folders than that of single Bi 3 TaO 7 and AgCl, respectively. What's more, it illustrated that the photogenerated carriers were markedly isolated on account of the formation of heterojunction con rmed by EIS analysis. Meanwhile, radical trapping experiments implied that the photo-induced holes (h + ), hydroxyl radical (•OH) and superoxide radical (•O-2) were the major active species. The escalated photocatalytic activity could be ascribed to the unique construction of Z-scheme AgCl/Bi 3 TaO 7 heterojunction, which could expedite charge separation and transmission, cement light absorption capability and retain the strong redox ability of photogenerated electrons and holes. Our nding suggests that AgCl/Bi 3 TaO 7 nanocomposites possess great potential for photocatalytic oxidation of residual TC in the wastewater e uents and the reported strategy can contribute to the development of novel high-performance photocatalyst.

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Section: Introductionmentioning

confidence: 99%

Facile construction of Z-scheme AgCl/Bi3TaO7 photocatalysts for effective removal of tetracycline under visible-light irradiation

Guo

et al. 2023

Preprint

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A string of AgCl/Bi3TaO7 two-component composite was synthesized by hydrothermal and deposition-precipitation process initially. The photocatalytic activities of mixed-phase AgCl/Bi3TaO7 were evaluated toward the decomposition of tetracycline (TC). Among these as-prepared materials, AgCl/Bi3TaO7 nanocomposites when the molar ratio of baked materials between AgCl and Bi3TaO7 was 1:5 presented the optimal photocatalytic quantum efficiency for TC dissociation (86.82%) with visible light exposure, which was 1.69 and 2.38 folders than that of single Bi3TaO7 and AgCl, respectively. What's more, it illustrated that the photogenerated carriers were markedly isolated on account of the formation of heterojunction confirmed by EIS analysis. Meanwhile, radical trapping experiments implied that the photo-induced holes (h+), hydroxyl radical (·OH) and superoxide radical (·O-2) were the major active species. The escalated photocatalytic activity could be ascribed to the unique construction of Z-scheme AgCl/Bi3TaO7 heterojunction, which could expedite charge separation and transmission, cement light absorption capability and retain the strong redox ability of photogenerated electrons and holes. Our finding suggests that AgCl/Bi3TaO7 nanocomposites possess great potential for photocatalytic oxidation of residual TC in the wastewater effluents and the reported strategy can contribute to the development of novel high-performance photocatalyst.

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The room temperature synthesis of a CuO-Bi-BiOBr ternary Z-scheme photocatalyst for enhanced sunlight driven alcohol oxidation

Abstract: Room temperature synthesis of all solid state Z-scheme CuO doped BiOBr (CuO-Bi-BiOBr) photocatalyst has been described. These CuO-Bi-BiOBr ternary heterojunctions exhibit efficient photocatalytic activities towards selective alcohol oxidations. The structure,...

Cited by 22 publications

References 75 publications

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Facile construction of Z-scheme AgCl/Bi3TaO7 photocatalysts for effective removal of tetracycline under visible-light irradiation

Facile construction of Z-scheme AgCl/Bi3TaO7 photocatalysts for effective removal of tetracycline under visible-light irradiation

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