Visible light induced hydrogen production from in situ generated colloidal rhodium-coated cadmium sulfide in surfactant vesicles

Tricot, Yves M.; Fendler, János H.

doi:10.1021/ja00320a063

Cited by 62 publications

(20 citation statements)

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“…Although many photocatalysts capable of splitting H 2 S have been developed, most of them are oxides with a wide bandgap, which are not highly efficient photocatalysts for hydrogen production under visible‐light irradiation 31–35. Some of the metal sulfides are attractive visible‐light‐driven photocatalysts because of their narrow bandgaps with valence bands at relatively negative potentials 36–40. CdS is an attractive material which has been extensively used as a photocatalyst for degradation of organic dyes.…”

Section: Introductionmentioning

confidence: 99%

“…[31][32][33][34][35] Some of the metal sulfi des are attractive visible-light-driven photocatalysts because of their narrow bandgaps with valence bands at relatively negative potentials. [36][37][38][39][40] CdS is an attractive material which has been extensively used as a photocatalyst for degradation of organic dyes. However, reports on the usage of the material in hydrogen generation are quite limited.…”

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confidence: 99%

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A Facile Template‐Free Approach for the Large‐Scale Solid‐Phase Synthesis of CdS Nanostructures and Their Excellent Photocatalytic Performance

Apte

Garaje

Mane

et al. 2011

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106

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The simple, template-free, low-temperature, large-scale synthesis of nanostructured CdS with the hexagonal wurtzite phase from bulk cadmium oxide under solid-phase conditions is demonstrated for the first time. The novel approach involves the homogenization of cadmium oxide (CdO) and thiourea in various stoichiometric ratios at moderate temperature. Among the different molar ratios of CdO and thiourea studied, the CdO/NH(2) CSNH(2) molar ratio of 1:2 is found to be the best to obtain highly pure CdS. The obtained CdS nanostructures exhibit excellent cubic morphology and high specific surface area with a particle size in the range of 5-7 nm. The bandgap of the nanostructured CdS is in the range of 2.42 to 2.46 eV due to its nanocrystalline nature. In photoluminescence studies, emission is observed at 520.34 and 536.42 nm, which is characteristic of the greenish-yellow region of the visible spectrum. Considering the bandgap of the CdS is within the visible region, the photocatalytic activity for H(2) generation and organic dye degradation are performed under visible-light irradiation. The maximum H(2) evolution of 2945 μmol h(-1) is obtained using nanostructured CdS prepared in the 1:2 ratio, which is three times higher than that of bulk CdS (1010 μmol h(-1) ). CdS synthesized using the 1:2 molar ratio shows maximum methylene blue degradation (87.5%) over a period of 60 min, which is approximately four times higher than that of bulk CdS (22%). This amazing performance of the material is due to its nanocrystalline nature and the high surface area of the CdS. The proposed simple methodology is believed to be a significant breakthrough in the field of nanotechnology, and the method can be further generalized as a rational preparation scheme for the large-scale synthesis of various other nanostructured metal sulfides.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

A Facile Template‐Free Approach for the Large‐Scale Solid‐Phase Synthesis of CdS Nanostructures and Their Excellent Photocatalytic Performance

Apte

Garaje

Mane

et al. 2011

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106

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“…1.8 x 10-7 Einstein s-1) of a deoxygenated solution containing Pt-deficient vesicles resulted in the reduction of R h ( b ~y ) ~3 +to R h ( b ~y ) ~+ (decay of h, , , . 306 and 320 nm),lb as shown in equations (1)-(5). The addition of K3Fe(CN)6 to the bulk solution did not affect the accumulation of R h ( b ~y ) ~+ inside the vesicle, i.e.…”

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confidence: 74%

Light-induced hydrogen evolution in oxidising media promoted by catalytic sites encapsulated by phospholipid membranes

Maier¹,

Shafirovich²

1985

J. Chem. Soc., Chem. Commun.

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“…Among these photocatalysts, CdS has received the most attentions, due to its superior light absorption and appropriate conduction-band level [5][6][7][8]. However, bare CdS photocatalyst usually suffers from photocorrosion [8,9], which can be improved by loading a cocatalyst such as noble metal (Pt [4,10], Au [11], and Rh [12,13]), WC [14], and WS 2 [15] on the surface of CdS. From the resources and environmental point of view, noble metal and tungsten are limited by their rare availability and high price.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Feather-Shaped MoS₂/CdS Photocatalyst for Effective Hydrogen Production

Liu

Quan

et al. 2013

International Journal of Photoenergy

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MoS2/CdS photocatalyst was fabricated by a hydrothermal method for H2production under visible light. This method used low toxic thiourea as a sulfur source and was carried out at 200°C. Thus, it was better than the traditional methods, which are based on an annealing process at relatively high temperature (above 400°C) using toxic H2S as reducing agent. Scanning electron microscopy and transmission electron microscopy images showed that the morphologies of MoS2/CdS samples were feather shaped and MoS2layer was on the surface of CdS. The X-ray photoelectron spectroscopy testified that the sample was composed of stoichiometric MoS2and CdS. The UV-vis diffuse reflectance spectra displayed that the loading of MoS2can enhance the optical absorption of MoS2/CdS. The photocatalytic activity of MoS2/CdS was evaluated by producing hydrogen. The hydrogen production rate on MoS2/CdS reached 192 μmol·h−1. This performance was stable during three repeated photocatalytic processes.

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Visible light induced hydrogen production from in situ generated colloidal rhodium-coated cadmium sulfide in surfactant vesicles

Cited by 62 publications

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A Facile Template‐Free Approach for the Large‐Scale Solid‐Phase Synthesis of CdS Nanostructures and Their Excellent Photocatalytic Performance

A Facile Template‐Free Approach for the Large‐Scale Solid‐Phase Synthesis of CdS Nanostructures and Their Excellent Photocatalytic Performance

Light-induced hydrogen evolution in oxidising media promoted by catalytic sites encapsulated by phospholipid membranes

Green Synthesis of Feather-Shaped MoS₂/CdS Photocatalyst for Effective Hydrogen Production

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Visible light induced hydrogen production from in situ generated colloidal rhodium-coated cadmium sulfide in surfactant vesicles

Cited by 62 publications

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A Facile Template‐Free Approach for the Large‐Scale Solid‐Phase Synthesis of CdS Nanostructures and Their Excellent Photocatalytic Performance

A Facile Template‐Free Approach for the Large‐Scale Solid‐Phase Synthesis of CdS Nanostructures and Their Excellent Photocatalytic Performance

Light-induced hydrogen evolution in oxidising media promoted by catalytic sites encapsulated by phospholipid membranes

Green Synthesis of Feather-Shaped MoS2/CdS Photocatalyst for Effective Hydrogen Production

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Green Synthesis of Feather-Shaped MoS₂/CdS Photocatalyst for Effective Hydrogen Production