Photocatalytic H2 production with CdS-based catalysts from a sulphide/sulphite substrate: An effort to develop MgO-supported catalysts

Subrahmanyam, M.; Supriya, V; Reddy, P. Ram

doi:10.1016/0360-3199(95)00046-1

Cited by 39 publications

(7 citation statements)

References 9 publications

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“…Some efforts have been made to improve the stability of metal sulfide, for example, by loading the noble metal (Pt) on the surface of CdS, incorporating the nanoparticles of metal sulfides into the interlayer photocatalysts [7][8][9]. Some authors also reported that photocatalytic properties of CdS could be modified by mixing with wide band gap semiconductors of chalcogenides such as ZnS [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Band structure-controlled solid solution of Cd1-xCd1-x ZnxSZnxS photocatalyst for hydrogen production by water splitting

Xing

Zhang

Yan

et al. 2006

International Journal of Hydrogen Energy

462

241

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Section: Introductionmentioning

confidence: 99%

Band structure-controlled solid solution of Cd1-xCd1-x ZnxSZnxS photocatalyst for hydrogen production by water splitting

Xing

Zhang

Yan

et al. 2006

International Journal of Hydrogen Energy

462

241

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“…CdS is active in visible light and its photoactivity can be improved by the addition of wide band gap semiconductors like ZnS. It is well known that doping of noble metals on CdS or ZnS can enhance the H 2 generation efficiency . However, using noble metals increase the costs of the process.…”

Section: Introductionmentioning

confidence: 99%

Concurrent Hydrogen Production and Hydrogen Sulfide Decomposition by Solar Photocatalysis

Priya

Kanmani

2016

CLEAN Soil Air Water

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Core-shell (CdS-ZnS)/TiO 2 nanoparticles (TiO 2 -core, CdS-ZnS À shell) were synthesized and their photocatalytic activity for hydrogen generation was compared with CdS, ZnS, and CdS-ZnS nanoparticles and TiO 2 nanorods. Physical characterization of the catalysts was carried out for particle size, molecular vibrations, band gap energy, specific surface area, and binding energy. Based on the results, core-shell formation between CdS-ZnS and TiO 2 was established. The CdS-ZnS/TiO 2 core-shell NPs exhibited high rates of hydrogen generation (29 mL/h) from water containing sulfide and sulfite ions. Photocatalytic generation of hydrogen with CdS-ZnS/TiO 2 core-shell nanoparticles was investigated by optimizing various operating variables as, e.g., the sulfide ion concentration, sulfite ion concentration, pH, catalyst concentration, light intensity and recycle flow rates in a 1 L laboratory scale tubular photoreactor. The maximum kinetic constant of 0.0038 min À1 was found at 0.05 M sulfide ion, 0.2 M sulfite ion, pH 11.3, and 500 mg/L photocatalyst. A final conversion of 30% was achieved under optimized conditions. This is a cleaner production method for generating H 2 and also an environmentally benign process.

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“…The semiconductor on an oxide support may have a bonding interaction between the interface and consequently affect the activity. Subrahmanyam et al 16 have reported the photocatalytic activity of CdS supported on MgO, Al 2 O 3 or Al 2 O 3 , modified with CaO/BaO. The catalysts were prepared by the conventional impregnation technique.…”

Section: Introductionmentioning

confidence: 99%

Activity of Cadmium Sulfide Photocatalysts for Hydrogen Production from Water: Role of Support

Arora

Sahu

Upadhyay

et al. 1999

Ind. Eng. Chem. Res.

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Alumina-supported cadmium sulfide photocatalysts for reduction of water to hydrogen were prepared by different techniques and characterized. The band gap, the dispersion of cadmium sulfide, and the contact between cadmium sulfide and alumina are affected by the preparation technique. Those preparation techniques that promote better dispersion of cadmium sulfide and give rise to a chemical interaction between cadmium sulfide and alumina impart a superior activity to the catalyst. The chemical interaction leads to decoration of cadmium sulfide surface by alumina which results in an intimate contact between them. Catalyst prepared by coprecipitation shows the intimate contact but has a poor dispersion of cadmium sulfide, whereas impregnation of alumina hydrogel results in a catalyst having both intimate contact between alumina and cadmium sulfide and better dispersion of cadmium sulfide; consequently, this results in enhanced activity.

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Photocatalytic H2 production with CdS-based catalysts from a sulphide/sulphite substrate: An effort to develop MgO-supported catalysts

Cited by 39 publications

References 9 publications

Band structure-controlled solid solution of Cd1-xCd1-x ZnxSZnxS photocatalyst for hydrogen production by water splitting

Band structure-controlled solid solution of Cd1-xCd1-x ZnxSZnxS photocatalyst for hydrogen production by water splitting

Concurrent Hydrogen Production and Hydrogen Sulfide Decomposition by Solar Photocatalysis

Activity of Cadmium Sulfide Photocatalysts for Hydrogen Production from Water: Role of Support

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