Bismuth oxide cocatalyst and copper oxide sensitizer in Cu2O/TiO2/Bi2O3 ternary photocatalyst for efficient hydrogen production under solar light irradiation

Vattikuti, S.V. Prabhakar; Mandari, Kotesh Kumar; Chennaiahgari, Manvitha; Sharma, Mangalampalli V. Phanikrishna; Valluri, Durga Kumari; Byon, Chan

doi:10.1016/j.ceramint.2018.03.262

Cited by 70 publications

(22 citation statements)

References 43 publications

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“…Cu 2 O/Bi 2 WO 6 hybrids were used for photocatalytic production of alkanes and hydrogen gas when butyric acid was used as electron donor . A ternary composite containing Cu 2 O has also been synthesized to extend absorption in the visible region . Therefore, the above research provides a comprehensive method for the utilization of solar light for photocatalytic hydrogen production and the simultaneous degradation of harmful substances.…”

Section: Design Of Cu‐based Cocatalysts For Photocatalytic Hydrogen Ementioning

confidence: 99%

Recent Advances in Cu‐Based Cocatalysts toward Solar‐to‐Hydrogen Evolution: Categories and Roles

et al. 2019

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Solar-to-hydrogen production is one of the most promising solutions for global energy shortages and the environmental crisis because it utilizes solar energy to the fullest extent. Photocatalytically splitting water to hydrogen involves three crucial processes: solar light harvesting, charge separation/migration, and the catalytic H 2 production reaction. In the past few years, much attention is paid to investigating noble metal cocatalysts for solar photoreduction, but much less attention is paid to transition metal-based cocatalysts. Nevertheless, great and significant advances are achieved using a copperbased cocatalyst for solar-to-hydrogen evolution, as it possesses a suitable binding energy for the hydrogen intermediate according to density functional theory calculations. This review summarizes recent studies and progress on the copper-based cocatalytic materials as well as discusses the roles and functional mechanisms for photocatalytic H 2 evolution. It begins with discussing basic principles for the use of cocatalysts for photocatalytic hydrogen evolution and points out opportunities to use non-noble metal cocatalysts for hydrogen evolution. Then, it explains the construction and structural features of a photocatalysis system with semiconductor-Cu-based cocatalyst, and how the functional mechanisms work to enhance the hydrogenproduction-related reactions. Finally, some challenges and perspectives are also given to promote further exploration of this emerging research area. Usually, the following three parts are considered: 1) improving

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Section: Design Of Cu‐based Cocatalysts For Photocatalytic Hydrogen Ementioning

confidence: 99%

Recent Advances in Cu‐Based Cocatalysts toward Solar‐to‐Hydrogen Evolution: Categories and Roles

et al. 2019

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“…10 In addition, introducing an oxide semiconductor can also introduce some unexpected properties, such as enhanced light adsorption and better conductivity. 15,16 Among these oxide semiconductors, cupric oxide (CuO) has attracted the attention of more and more researchers owing to its excellent properties, such as its low cost, it is easily obtained, and it is environmentally friendly. 17,18 Moreover, CuO is a p-type semiconductor, which has a very small band-gap (1.2-1.7 eV).…”

Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic degradation of organic contaminants over a CuO/g-C₃N₄ p–n heterojunction under visible light irradiation

et al. 2021

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“…However, its application in the visible range of the solar spectrum is limited by the low quantum yield and the wide band gap of TiO 2 (i.e., 3.2 eV for anatase) [ 6 , 7 , 8 , 9 ]. Several strategies have been developed to expand the response of TiO 2 into the visible range spectra namely, the addition of electron donors [ 10 ], noble metals [ 11 ], metal ion or anion doping [ 12 , 13 ], dye sensitization [ 14 ], synthesis of TiO 2 with exposed {001} facets [ 15 ], heterojunction with different types of active materials [ 16 , 17 ], combination with carbon materials [ 18 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Functionalized Graphene Derivatives and TiO2 for High Visible Light Photodegradation of Azo Dyes

et al. 2020

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Functionalized graphene derivatives including graphene oxide (GO), reduced graphene oxide (rGO), and heteroatom (nitrogen/sulphur (N/S) or boron (B))-doped graphene were used to synthesize composites with TiO2 (T). The photocatalytic performance of composites was assessed for the degradation of Orange G dye (OG) under simulated solar light. All the prepared graphene derivatives—TiO2 composites showed better photocatalytic performance than bare TiO2. A higher photocatalytic activity was found for the composites containing GO and N/S co-doped rGO (kapp = 109.2 × 10−3 and 48.4 × 10−3 min−1, for GO-T and rGONS-T, respectively). The influence of both initial solution pH and the reactive species involved in the OG degradation pathway were studied. The photocatalytic activity of the samples decreased with the increase of the initial pH (from 3.0 to 10.0) due to the occurrence of electrostatic repulsive forces between the photocatalysts surface and the molecules of OG, both negatively charged. The use of selective scavengers showed that although the photogenerated holes dominate the degradation mechanism, radicals and singlet oxygen also participate in the OG degradation pathway. In addition, reutilization experiments indicated that the samples were stable under the reaction conditions used.

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Bismuth oxide cocatalyst and copper oxide sensitizer in Cu2O/TiO2/Bi2O3 ternary photocatalyst for efficient hydrogen production under solar light irradiation

Cited by 70 publications

References 43 publications

Recent Advances in Cu‐Based Cocatalysts toward Solar‐to‐Hydrogen Evolution: Categories and Roles

Recent Advances in Cu‐Based Cocatalysts toward Solar‐to‐Hydrogen Evolution: Categories and Roles

Enhanced photocatalytic degradation of organic contaminants over a CuO/g-C₃N₄ p–n heterojunction under visible light irradiation

Functionalized Graphene Derivatives and TiO2 for High Visible Light Photodegradation of Azo Dyes

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Bismuth oxide cocatalyst and copper oxide sensitizer in Cu2O/TiO2/Bi2O3 ternary photocatalyst for efficient hydrogen production under solar light irradiation

Cited by 70 publications

References 43 publications

Recent Advances in Cu‐Based Cocatalysts toward Solar‐to‐Hydrogen Evolution: Categories and Roles

Recent Advances in Cu‐Based Cocatalysts toward Solar‐to‐Hydrogen Evolution: Categories and Roles

Enhanced photocatalytic degradation of organic contaminants over a CuO/g-C3N4 p–n heterojunction under visible light irradiation

Functionalized Graphene Derivatives and TiO2 for High Visible Light Photodegradation of Azo Dyes

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Enhanced photocatalytic degradation of organic contaminants over a CuO/g-C₃N₄ p–n heterojunction under visible light irradiation