Highly efficient hydrogen and ethylene glycol photoproduction from aqueous methanol solution by ZnS and an in situ spin trapping investigation

Chen, Liaohai; Gu, Wanzhen; Zhu, Xiangwei; Wang, Fudong; Song, Yongzhe; Hu, Jiulin

doi:10.1016/1010-6030(93)80155-3

Cited by 15 publications

(4 citation statements)

References 17 publications

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“…Actually Rabani (2002) and Martin (1972) have based Born-Mayer potential model and Robinson's rotation approximation to evaluate elastic constants, which is quite different from present Lennard-Jones potential approach. Although obtained order of the SOEC are same as others (Bagnall et al, 1997;Chen et al, 1993;Louail et al, 2004). Relative magnitude of C 11 , C 33 and C 44 are well presented by our theoretical approach.…”

Section: Higher Order Elastic Constantssupporting

confidence: 77%

“…Actually, their technological potential is very great. In addition to their use in optical devices operating in the short‐wavelength radiation range from red to ultra‐violet (Bagnall et al , 1997), in recent years, these materials have been used as catalysts when studying photochemical reactions (Chen et al , 1993). Owing to the possibility of intense photo excitation, especially between the top of the valence band and the bottom of the conduction band at the Γ point, they are used in solar cells (Lews, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Ultrasonic wave propagation in cadmium chalcogenides (CdS, CdSe and CdTe) compounds

Yadawa¹

2011

Multidiscipline Modeling in Materials and Structures

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Purpose -The purpose of this paper is to evaluate the second-and third-order elastic constants (SOEC and TOEC) and then velocities and attenuation of ultrasonic waves along unique direction in hexagonal II-VI group semiconductors, cadmium chalcogenides (CdS, CdSe and CdTe) compounds at room temperature and obtained the ultrasonic behaviour and mechanical properties of these compounds. Design/methodology/approach -Lennard-Jones potential approach is applied to evaluate the SOEC and TOEC. Findings -The value of ultrasonic attenuation of CdSe is smallest in comparison to other chosen materials. So, CdSe is more ductile and more pure than others. Thus, the mechanical properties of CdSe are better than those of CdS and CdTe, because CdSe has high-elastic constants and low-ultrasonic attenuation. Originality/value -Obtained results, together with other well-known physical properties, may expand future prospects for the industrial applications and study of these semiconductor materials.

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Section: Higher Order Elastic Constantssupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Ultrasonic wave propagation in cadmium chalcogenides (CdS, CdSe and CdTe) compounds

Yadawa¹

2011

Multidiscipline Modeling in Materials and Structures

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“…The decomposition products of simple aliphatic alcohols are carbon dioxide and water [1,[14][15][16][17][18][19]. On the basis of our current experimental results, the photocatalytic decomposition of glycols can be explained in terms of a standard H-atom abstraction mechanism involving surface-bound hydroxyl radical generated after photoexcitation.…”

Section: Mechanistic Implicationsmentioning

confidence: 90%

Heterogeneous photocatalytic degradation of ethylene glycol and propylene glycol

Kim

Hoffmann

2008

Korean J. Chem. Eng.

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The photocatalytic decomposition of ethylene glycol and propylene glycol was investigated by using UVilluminated TiO 2 and metal-loaded TiO 2 catalysts. The effects of pH, initial concentration, and wavelength of light on the decomposition rate of the glycols were explored. Platinum-and palladium-loaded TiO 2 catalysts enhanced the rates of photodecomposition compared to unloaded TiO 2 . The glycols were oxidized primarily to carbon dioxide and water. Formaldehyde was found to be an important reaction intermediate. A detailed chemical reaction mechanism for the destruction of ethylene glycol and propylene glycol in water via free radical pathway and trapped hole reactions at the particle surface is proposed.

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“…Hydrogen production under solar light irradiation with the assistance of semiconductor photocatalyst is one of the potential solutions to resolve the depletion of fossil fuels [1]. ZnS possesses high conduction band that is essential for photocatalytic hydrogen production [1] but ZnS is not active under visible light irradiation. Indium based sulfide material has gain interest due to the visible light active properties which can utilize most of the solar light energy.…”

Section: Introductionmentioning

confidence: 99%

Synergetic Effect of In and Ag Co-Doped ZnS for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation

Kimi

Yuliati²,

Shamsuddin³

2014

AMR

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Abstract. In (Indium) and Ag (Argentum) co-doped ZnS photocatalysts were successfully prepared by hydrothermal method to extend the light absorption of ZnS to the visible light region. The concentration of In was constant while for Ag was varied to optimize the photocatalytic activity. The In and Ag co-doped ZnS (Zinc Sulfide) photocatalysts showed smaller band gap energy compared to single doped In(0.1)-ZnS and undoped ZnS. The photocatalytic activity of In and Ag co-doped ZnS photocatalysts was evaluated from the amount of hydrogen produced. The hydrogen evolution rate from aqueous solution containing Na 2 SO 3 (Sodium Sulfite) and Na 2 S (Sodium Sulfide) as sacrificial reagent under visible light irradiation obtained from In and Ag co-doped ZnS is higher compared to the single doped In(0.1)-ZnS when optimum amount of Ag dopant was added. The highest photocatalytic activity is observed for In(0.1),Ag(0.01)-ZnS with hydrogen production rate of 26.82 µmol/h. The higher performance of this photocatalyst is ascribed to the extended visible light absorption, efficient charge separation as well as improved electron transfer associated with synergistic effect of appropriate amount of In and Ag co-doped ZnS.

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Highly efficient hydrogen and ethylene glycol photoproduction from aqueous methanol solution by ZnS and an in situ spin trapping investigation

Cited by 15 publications

References 17 publications

Ultrasonic wave propagation in cadmium chalcogenides (CdS, CdSe and CdTe) compounds

Ultrasonic wave propagation in cadmium chalcogenides (CdS, CdSe and CdTe) compounds

Heterogeneous photocatalytic degradation of ethylene glycol and propylene glycol

Synergetic Effect of In and Ag Co-Doped ZnS for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation

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