Photodeposition of amorphous MoS x cocatalyst on TiO 2 nanosheets with {001} facets exposed for highly efficient photocatalytic hydrogen evolution

Du, Fuying; Lü, Hao; Lu, Shengsen; Wang, Jie; Xiao, Yan; Xue, Weiran; Cao, Shun‐an

doi:10.1016/j.ijhydene.2017.12.181

Cited by 33 publications

(26 citation statements)

References 55 publications

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“…As far as comparison is possible, our absolute PHER values are lower than the literature values for copper and nickel sulfides [14,39]. Our values for molybdenum sulfide are lower than for amorphous MoS x reported in [10] but higher than observed earlier for the MoS 2 nanosheets [40]. However if approximately re-calculated for the same conditions (lamp power and slurry concentration, Table S2, Fig.…”

Section: Photocatalytic Her Activitycontrasting

confidence: 43%

“…Beside the efforts of fundamental understanding, great number of research works report on the empirical studies of novel catalysts combining titania and nanoparticles of various co-catalysts, aiming to enhance PHER performance. Much attention has been recently paid to the studies of layered sulfides on titania, particularly to the MoS 2 /TiO 2 composites [10], which has been recently reviewed [11]. MoS 2 is considered as a cheap alternative to platinum, both for electrochemical HER and PHER.…”

Section: Introductionmentioning

confidence: 99%

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Titania - Supported transition metals sulfides as photocatalysts for hydrogen production from propan-2-ol and methanol

Maheu

Puzenat

Geantet

et al. 2019

International Journal of Hydrogen Energy

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Section: Photocatalytic Her Activitycontrasting

confidence: 43%

Section: Introductionmentioning

confidence: 99%

Titania - Supported transition metals sulfides as photocatalysts for hydrogen production from propan-2-ol and methanol

Maheu

Puzenat

Geantet

et al. 2019

International Journal of Hydrogen Energy

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“…The highest yield and the highest enhancement factor are however measured with amorphous MoS X co-catalyst [21,40]. that the rate-determining step is gradually favored with the increase of the co-catalyst loading.…”

Section: Influence Of the Rus 2 Loadingmentioning

confidence: 86%

“…By contrast, RuS 2 is not the most studied transition metal sulfide co-catalyst. More attention has been recently paid to MoS 2 [20,21,[38][39][40], to NiS x [23,41,42] or to cheaper materials such as CuS [24,43]. However, we recently evidenced that among a series of seven transition metal sulfides deposited on TiO 2 , RuS 2 was one of the most efficient PHER co-catalyst [17].…”

Section: Table Of Content Introductionmentioning

confidence: 99%

Photocatalytic production of H2 is a multi-criteria optimization problem: Case study of RuS2/TiO2

et al. 2021

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Many parameters influence the photocatalytic production of H 2. Identifying and quantifying them is necessary for correct comparison of photocatalysts and right understanding of involved mechanism. In this work, we studied the photocatalytic dehydrogenation of isopropanol with titania-supported ruthenium disulfide. We studied the influence of seven parameters on the photocatalytic activity: the temperature, the composition of the reactive mixture, the mass of the photocatalyst, the flux and the energy of the incident photons, the co-catalyst loading and the nature of the support. Their influence was studied, not only on the rate of hydrogen production (or photon yield) but also on the apparent activation energy and on the preexponential factor, deduced from an Arrhenius law. The photon yield as a function of the co-catalyst loading show an optimum of activity. A 6.9 % photon yield was obtained at 0.84 wt% and = 3.65. The rate-determining step for the photocatalytic dehydrogenation of the isopropanol with RuS 2 /TiO 2 is, at optimal conditions, the electron transfer from TiO 2 to RuS 2. The latter is not favored because of the band diagrams of RuS 2 and TiO 2. The electron transfer can be optimized working with incident photons having a higher energy, thanks to a hot carrier effect observed in RuS 2 /TiO 2 .

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“…The report published by Yu et al. shows that the photocatalytic performance of TiO 2 , g‐C 3 N 4 and CdS is greatly improved with the incorporation of MoS x . The report published by Hai et al., showed that MoS 2 monolayers with poorly crystallinity synthesized through the liquid exfoliation, have higher properties than that of Pt .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ni−MoS_x/g‐C₃N₄ for Photocatalytic Hydrogen Evolution under Visible Light

Wang

et al. 2019

ChemCatChem

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Graphitic carbon nitride loaded with MoSx nanodots (MoSx/g‐C3N4) was synthesized through a sonochemical method. MoSx nanodots (3∼20 nm) are shown to have the same excellent co‐catalytic H2 evolution performance as that of Pt. Nevertheless, the photocatalytic activity of MoSx/g‐C3N4 decreased with time. To overcome this instability, we show that co‐incorporation of Ni can significantly reduce the photo‐corrosion. The rate of H2 evolution of Ni−MoSx/g‐C3N4 photocatalyst reaches a maximum of 5968 μmol h−1 g−1, which is 89 % higher than that of Pt/g‐C3N4. The element mapping images show that Ni is deposited on the surface of MoSx. The co‐presence of Ni and MoSx not only enhance optical light absorption by g‐C3N4, but also significantly improve the separation efficiency of photocarriers and thus the photocatalytic hydrogen evolution efficiency.

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Photodeposition of amorphous MoS x cocatalyst on TiO 2 nanosheets with {001} facets exposed for highly efficient photocatalytic hydrogen evolution

Cited by 33 publications

References 55 publications

Titania - Supported transition metals sulfides as photocatalysts for hydrogen production from propan-2-ol and methanol

Titania - Supported transition metals sulfides as photocatalysts for hydrogen production from propan-2-ol and methanol

Photocatalytic production of H2 is a multi-criteria optimization problem: Case study of RuS2/TiO2

Synthesis of Ni−MoS_x/g‐C₃N₄ for Photocatalytic Hydrogen Evolution under Visible Light

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Photodeposition of amorphous MoS x cocatalyst on TiO 2 nanosheets with {001} facets exposed for highly efficient photocatalytic hydrogen evolution

Cited by 33 publications

References 55 publications

Titania - Supported transition metals sulfides as photocatalysts for hydrogen production from propan-2-ol and methanol

Titania - Supported transition metals sulfides as photocatalysts for hydrogen production from propan-2-ol and methanol

Photocatalytic production of H2 is a multi-criteria optimization problem: Case study of RuS2/TiO2

Synthesis of Ni−MoSx/g‐C3N4 for Photocatalytic Hydrogen Evolution under Visible Light

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Synthesis of Ni−MoS_x/g‐C₃N₄ for Photocatalytic Hydrogen Evolution under Visible Light