M/TiO<sub>2</sub> (M = Fe, Co, Ni, Cu, Zn) catalysts for photocatalytic hydrogen production under UV and visible light irradiation

Díaz, L.; Rodrı́guez, V.D.; González‐Rodríguez, M. Rosario; Rodríguez‐Castellón, Enrique; Algarra, Manuel; Núñez, P.; Moretti, Elisa

doi:10.1039/d0qi01311k

Cited by 28 publications

(18 citation statements)

References 51 publications

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“…From this point of view, the heterostructure concept with the incorporation of a cocatalyst or bicatalyst has not been applied to Ta-containing SrZrO 3 yet, opening new opportunities to design SrZrO 3 -based photocatalysts. 20,21 Coupling a narrow band gap to a wide band gap semiconductor enhances light absorption in the visible spectrum. 22,23 In essence, this entails band gap tunability via band alignment to reduce the recombination of photogenerated charges.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Hydrogen Evolution from Water Splitting on Ta₂O₅/SrZrO₃ Heterostructures Decorated with Cu_xO/RuO₂ Cocatalysts

Huerta-Flores

Ruiz‐Zepeda

Eyövge

et al. 2022

ACS Appl. Mater. Interfaces

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Photocatalytic H2 generation by water splitting is a promising alternative for producing renewable fuels. This work synthesized a new type of Ta2O5/SrZrO3 heterostructure with Ru and Cu (RuO2/Cu x O/Ta2O5/SrZrO3) using solid-state chemistry methods to achieve a high H2 production of 5164 μmol g–1 h–1 under simulated solar light, 39 times higher than that produced using SrZrO3. The heterostructure performance is compared with other Ta2O5/SrZrO3 heterostructure compositions loaded with RuO2, Cu x O, or Pt. Cu x O is used to showcase the usage of less costly cocatalysts to produce H2. The photocatalytic activity toward H2 by the RuO2/Cu x O/Ta2O5/SrZrO3 heterostructure remains the highest, followed by RuO2/Ta2O5/SrZrO3 > Cu x O/Ta2O5/SrZrO3 > Pt/Ta2O5/SrZrO3 > Ta2O5/SrZrO3 > SrZrO3. Band gap tunability and high optical absorbance in the visible region are more prominent for the heterostructures containing cocatalysts (RuO2 or Cu x O) and are even higher for the binary catalyst (RuO2/Cu x O). The presence of the binary catalyst is observed to impact the charge carrier transport in Ta2O5/SrZrO3, improving the solar to hydrogen conversion efficiency. The results represent a valuable contribution to the design of SrZrO3-based heterostructures for photocatalytic H2 production by solar water splitting.

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Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Hydrogen Evolution from Water Splitting on Ta₂O₅/SrZrO₃ Heterostructures Decorated with Cu_xO/RuO₂ Cocatalysts

Huerta-Flores

Ruiz‐Zepeda

Eyövge

et al. 2022

ACS Appl. Mater. Interfaces

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“…S30 ). Although ∼60 times lower than those of Pt-loaded COF-BBT, this rate is roughly comparable to the state of the art using non-precious-metal-based co-catalysts [ 44 , 45 ].…”

Section: Resultsmentioning

confidence: 67%

Highly crystalline and water-wettable benzobisthiazole-based covalent organic frameworks for enhanced photocatalytic hydrogen production

Huang

Qin

et al. 2022

National Science Review

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Two-dimensional covalent organic frameworks are promising for photocatalysis by virtue of their structural and functional diversity, but generally suffer from low activities relative to their inorganic competitors. To fulfil their full potential requires a rational tailoring of their structures at different scales as well as their surface properties. Herein, we demonstrate benzobisthiazole-based covalent organic frameworks as a superior photocatalyst for hydrogen production. The product features high crystallinity with ordered 2.5 nm-wide cylindrical mesopores and great water wettability. These structural advantages afford our polymeric photocatalyst with fast charge carrier dynamics as evidenced by a range of spectroscopic characterizations, and excellent catalytic performances when suspended in solution or supported on melamine foams. Under the visible light irradiation, it enables efficient and stable hydrogen evolution with a production rate of 487 μmol h–1 (or a mass-specific rate of 48.7 mmol g–1 h–1) — far superior to the previous state of the art. We also demonstrate that the hydrogen production can be stoichiometrically coupled with the oxidation conversion of biomass as exemplified by the conversion of furfuryl alcohol to 2-furaldehyde.

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“…65 In this system, the electrons at the VB of C−TiO 2 were excited and transported to the CB by light illumination, which can reduce the oxidized Cu 2+ to Cu metal. 66 Therefore, the SPR effect of Cu is the main contributor for the improvement of CO 2 reduction performance of the C−TiO 2 −Cu photocatalyst. The contribution Cu for the C−TiO 2 mainly originated from three points, as shown in Figure 6d.…”

Section: Migration Mechanism Of Charge Carriersmentioning

confidence: 99%

Netted C-Doped TiO₂ Mesoporous Nanostructure Decorated by Cu Nanoparticles for Photocatalytic CO₂ Reduction

Tai

Sun

Wang

et al. 2022

ACS Appl. Nano Mater.

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Acquiring an anatase TiO 2 catalyst with tiny size and high crystallinity for excellent photocatalytic performance still remains a huge challenge. Herein, a mesoporous C-doped TiO 2 netted nanostructure is successfully synthesized by a vacuum dipping and calcination method, where the thin film of multiwalled carbon nanotubes is skillfully utilized as the confinement template to suppress the grain growth and phase transfer. In addition, small Cu nanoparticles are deposited on the surfaces of the TiO 2 by an electronic beam evaporation way. The obtained C−TiO 2 −Cu photocatalyst exhibits high CH 4 and CO production rates of 8.8 and 60.3 μmol/g/h, respectively, which are excellent among the TiO 2 -based photocatalysts. This high performance originates from the following synergistic effects. This good crystalline and small size can facilitate the charge separation, while this unique netted mesoporous structure will provide sufficient sites for the reaction. Moreover, the C doping can enhance light absorption and the plasmonic Cu can inject hot electrons into TiO 2 , which will increase the amounts of electrons and promote their transfer.

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M/TiO₂ (M = Fe, Co, Ni, Cu, Zn) catalysts for photocatalytic hydrogen production under UV and visible light irradiation

Abstract: In order to improve the photocatalytic response of the TiO2 to the UV and visible light for hydrogen photoproduction, low cost M/TiO2 semiconductor catalysts were prepared by impregnation method of...

Cited by 28 publications

References 51 publications

Enhanced Photocatalytic Hydrogen Evolution from Water Splitting on Ta₂O₅/SrZrO₃ Heterostructures Decorated with Cu_xO/RuO₂ Cocatalysts

Enhanced Photocatalytic Hydrogen Evolution from Water Splitting on Ta₂O₅/SrZrO₃ Heterostructures Decorated with Cu_xO/RuO₂ Cocatalysts

Highly crystalline and water-wettable benzobisthiazole-based covalent organic frameworks for enhanced photocatalytic hydrogen production

Netted C-Doped TiO₂ Mesoporous Nanostructure Decorated by Cu Nanoparticles for Photocatalytic CO₂ Reduction

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M/TiO2 (M = Fe, Co, Ni, Cu, Zn) catalysts for photocatalytic hydrogen production under UV and visible light irradiation

Abstract: In order to improve the photocatalytic response of the TiO2 to the UV and visible light for hydrogen photoproduction, low cost M/TiO2 semiconductor catalysts were prepared by impregnation method of...

Cited by 28 publications

References 51 publications

Enhanced Photocatalytic Hydrogen Evolution from Water Splitting on Ta2O5/SrZrO3 Heterostructures Decorated with CuxO/RuO2 Cocatalysts

Enhanced Photocatalytic Hydrogen Evolution from Water Splitting on Ta2O5/SrZrO3 Heterostructures Decorated with CuxO/RuO2 Cocatalysts

Highly crystalline and water-wettable benzobisthiazole-based covalent organic frameworks for enhanced photocatalytic hydrogen production

Netted C-Doped TiO2 Mesoporous Nanostructure Decorated by Cu Nanoparticles for Photocatalytic CO2 Reduction

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M/TiO₂ (M = Fe, Co, Ni, Cu, Zn) catalysts for photocatalytic hydrogen production under UV and visible light irradiation

Enhanced Photocatalytic Hydrogen Evolution from Water Splitting on Ta₂O₅/SrZrO₃ Heterostructures Decorated with Cu_xO/RuO₂ Cocatalysts

Enhanced Photocatalytic Hydrogen Evolution from Water Splitting on Ta₂O₅/SrZrO₃ Heterostructures Decorated with Cu_xO/RuO₂ Cocatalysts

Netted C-Doped TiO₂ Mesoporous Nanostructure Decorated by Cu Nanoparticles for Photocatalytic CO₂ Reduction