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Incorporating transition metal-facilitated photocatalytic systems for efficient hydrogen evolution

A transition metal, photocatalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc., can solve the problem of sulfurous acid gas management High cost, inability to recover hydrogen sulfide energy content, inability to produce hydrogen, etc.

Inactive Publication Date: 2018-07-13
KING ABDULLAH UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many problems with this process, for example, the management cost of sulfurous acid gas is high
In addition to this, the process cannot recover the energy content of hydrogen sulfide, nor can it produce hydrogen in high demand

Method used

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  • Incorporating transition metal-facilitated photocatalytic systems for efficient hydrogen evolution
  • Incorporating transition metal-facilitated photocatalytic systems for efficient hydrogen evolution
  • Incorporating transition metal-facilitated photocatalytic systems for efficient hydrogen evolution

Examples

Experimental program
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Embodiment 1

[0039] 1,2-ethanedithiol (EDT) and nickel(II) nitrate hexahydrate (Ni(NO 3 ). 6H 2 O, greater than or equal to 98.5%) is available from Sigma-Aldrich. Sodium sulfide nonahydrate (Na 2 S. 9H 2 O, greater than or equal to 98%) and cadmium acetate dihydrate (Cd(OAc)2.9H2O, greater than or equal to 98%) are available from Acros Organics. All chemicals were used without further purification. The synthesis of cadmium sulfide nanocrystals involves mixing 400 mL of Na2S (0.14 M) aqueous solution and 500 mL of Cd(OAc) 2 (0.14M) aqueous solutions were mixed together and mixing occurred with good stirring. After stirring for approximately 24 hours, the solution was filtered to obtain a solid, which was washed with deionized water. This cleaning process is repeated several times. The obtained yellow solid was then dispersed in 100 mL of deionized water, and then transferred to a polytetrafluoroethylene-lined stainless steel autoclave for hydrothermal treatment. After being heate...

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Abstract

It is an object of the present invention to provide a method, at least in part, for improving the performance of photocatalysts (semiconductor photocatalysts) by incorporating a metal (for example, a metal ion of a late transition metal, such as Nickel) adheres to the surface of the semiconductor (photocatalyst). More specifically, 1,2-ethanedithiol (EDT) acts as an excellent molecule for adhering a transition metal complex such as nickel (Ni2+ ion) to the surface of a semiconductor material used to form a cadmium sulfide surface linking agent (organic ligand). The photocatalyst has a special role in hydrogen evolution from hydrogen sulfide.

Description

[0001] Cross References to Related Applications [0002] This application is based upon and claims priority to US Provisional Patent Application No. 61 / 874,063, published September 5, 2013, which is hereby incorporated by reference as if set forth herein. technical field [0003] The present invention relates to photocatalyst materials (semiconductor photocatalysts) and, more particularly, to a method that binds the photocatalyst surface and a metal (for example, nickel ions or other transition metal ions) via a linker (organic ligand) ), to enhance the effect of photocatalysts, thus providing photocatalytically enhanced systems for efficient hydrogen evolution and other uses in photocatalytic applications. Background technique [0004] The natural gas industry and refineries produce a large amount of hydrogen sulfide (H 2 S). Some sour gas wells may contain more than 30% hydrogen sulfide. Hydrogen sulfide is naturally corrosive and damages the integrity of pipelines. Hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/03B01J23/06B01J35/00B01J37/04B01J31/02B01J23/755
CPCB01J37/038B01J37/04B01J23/06B01J23/755B01J27/043B01J31/2273B01J31/2278B01J31/226B01J2531/847Y02E60/36B01J35/39C01B3/065
Inventor 高部和宏塔伊尔杰·伊西姆杰W·L·俞西尔瓦诺·德尔高博W·徐
Owner KING ABDULLAH UNIV OF SCI & TECH
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