Enhancing hydrogen evolution by photoelectrocatalysis of water splitting over a CdS flowers-loaded TiO2 nanotube array film on the Ti foil substrate

Zhang, Yuyuan; Hu, Huawen; Kang, Wanwen; Qiu, Guojian; Liang, Ruiyin; Deng, Licheng; Yuan, Haoran

doi:10.1016/j.ceramint.2020.04.062

Cited by 43 publications

(14 citation statements)

References 56 publications

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“…The validity of the method applied was proved in our previous paper [27]. A similar water-displacing method was used by Zhang et al to measure the volume of hydrogen generated [54]. Before starting each irradiation, the system was checked regarding gas leakage.…”

Section: Photochemical Experimentsmentioning

confidence: 95%

Effects of Preparation Conditions on the Efficiency of Visible-Light-Driven Hydrogen Generation Based on Ni(II)-Modified Cd0.25Zn0.75S Photocatalysts

et al. 2022

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Hydrogen as an environmentally friendly fuel can be produced by photocatalytic procedures from aqueous systems, utilizing H2S, an industrial side-product, by conversion and storage of renewable solar energy. Although composites of CdS and ZnS prepared by co-precipitation are very efficient in heterogeneous photocatalytic H2 generation, the optimal conditions for their synthesis and the effects of the various influencing factors are still not fully clarified. In this work, we investigated how the efficiency of Cd0.25Zn0.75S composites modified with Ni(II) was affected by the doping method, Ni-content, hydrothermal treatment, and presence of a complexing agent (ammonia) used in the preparation. The composition, optical, and structural properties of the photocatalysts prepared were determined by ICP, DRS, XRD, TEM, and STEM-EDS. Although hydrothermal treatment proved preferable for Ni-free composites, Ni-modification was more efficient for untreated composites precipitated from ammonia-containing media. The best efficiency (14.9% quantum yield at 380 nm irradiation, 109.8 mmol/g/h hydrogen evolution rate) achieved by surface modification with 0.1–0.3% Ni(II) was 15% and 20% better than those for hydrothermally treated catalyst and similarly prepared Pt-modified one, respectively. Structural characterization of the composites clearly confirmed that the Ni2+ ions were not embedded into the CdS-ZnS crystal lattice but were enriched on the surface of particles of the original catalyst in the form of NiO or Ni(OH)2. This co-catalyst increased the efficiency by electron-trapping, but its too high amount caused an opposite effect by diminishing the excitable surface of the CdS-ZnS particles.

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Section: Photochemical Experimentsmentioning

confidence: 95%

Effects of Preparation Conditions on the Efficiency of Visible-Light-Driven Hydrogen Generation Based on Ni(II)-Modified Cd0.25Zn0.75S Photocatalysts

et al. 2022

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“…In the Figure some of the traditional photocatalysts, namely TiO 2 and Fe 2 O 3 are also reported [ 7 , 9 ]. Clearly, many other examples of efficient alternative photocatalytic materials could be found in literature, (e.g., metal dichalcogenides and oxides [ 63 ] as well as hybrid structures [ 64 , 65 , 66 ]) however the discussion of those alternatives lies outside the focus of this minireview. Figure 3 highlights the excellent tunability of Pb-free MHPs properties, in particular the water reduction ability related to the relative position of their CB; typically, negative enough for H 2 generation.…”

Section: Pb-free Perovskites For H 2 Evolutionmentioning

confidence: 99%

Lead-Free Metal Halide Perovskites for Hydrogen Evolution from Aqueous Solutions

et al. 2021

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Metal halide perovskites (MHPs) exploitation represents the next big frontier in photovoltaic technologies. However, the extraordinary optoelectronic properties of these materials also call for alternative utilizations, such as in solar-driven photocatalysis, to better address the big challenges ahead for eco-sustainable human activities. In this contest the recent reports on MHPs structures, especially those stable in aqueous solutions, suggest the exciting possibility for efficient solar-driven perovskite-based hydrogen (H2) production. In this minireview such works are critically analyzed and classified according to their mechanism and working conditions. We focus on lead-free materials, because of the environmental issue represented by lead containing material, especially if exploited in aqueous medium, thus it is important to avoid its presence from the technology take-off. Particular emphasis is dedicated to the materials composition/structure impacting on this catalytic process. The rationalization of the distinctive traits characterizing MHPs-based H2 production could assist the future expansion of the field, supporting the path towards a new class of light-driven catalysts working in aqueous environments.

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“…As a sustainable energy conversion technique, photocatalysis has received increasing attention in the fields of degrading organic pollutants, [1][2][3][4][5][6][7][8] water splitting, [9][10][11] organic synthesis, CO 2 reduction, 12,13 and so on. To date, the design and preparation of semiconductor photocatalysts has primarily been a topic in the photocatalysis field.…”

Section: Introductionmentioning

confidence: 99%

Construction of a hydrangea-like Bi₂WO₆/BiOCl composite as a high-performance photocatalyst

Jiang¹,

Wang

et al. 2022

New J. Chem.

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Enhancing hydrogen evolution by photoelectrocatalysis of water splitting over a CdS flowers-loaded TiO2 nanotube array film on the Ti foil substrate

Cited by 43 publications

References 56 publications

Effects of Preparation Conditions on the Efficiency of Visible-Light-Driven Hydrogen Generation Based on Ni(II)-Modified Cd0.25Zn0.75S Photocatalysts

Effects of Preparation Conditions on the Efficiency of Visible-Light-Driven Hydrogen Generation Based on Ni(II)-Modified Cd0.25Zn0.75S Photocatalysts

Lead-Free Metal Halide Perovskites for Hydrogen Evolution from Aqueous Solutions

Construction of a hydrangea-like Bi₂WO₆/BiOCl composite as a high-performance photocatalyst

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Enhancing hydrogen evolution by photoelectrocatalysis of water splitting over a CdS flowers-loaded TiO2 nanotube array film on the Ti foil substrate

Cited by 43 publications

References 56 publications

Effects of Preparation Conditions on the Efficiency of Visible-Light-Driven Hydrogen Generation Based on Ni(II)-Modified Cd0.25Zn0.75S Photocatalysts

Effects of Preparation Conditions on the Efficiency of Visible-Light-Driven Hydrogen Generation Based on Ni(II)-Modified Cd0.25Zn0.75S Photocatalysts

Lead-Free Metal Halide Perovskites for Hydrogen Evolution from Aqueous Solutions

Construction of a hydrangea-like Bi2WO6/BiOCl composite as a high-performance photocatalyst

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Construction of a hydrangea-like Bi₂WO₆/BiOCl composite as a high-performance photocatalyst