ZnTi hydrotalcite nanosheet catalyst and application of catalyst in hydrogen preparation by photoactivating and decomposing water

A nanosheet and catalyst technology, which is applied in the field of ZnTi hydrotalcite nanosheet catalyst and its photocatalytic water splitting to produce hydrogen, can solve the problems of low photocatalytic efficiency, achieve excellent semiconductor characteristics, simple synthesis conditions, and easy large-scale industrial production Effect
CN102872918AInactive Publication Date: 2013-01-16BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2013-01-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a ZnTi hydrotalcite nanosheet catalyst belonging to the technical field of novel catalytic material preparation and an application of the catalyst in hydrogen preparation by photoactivating and decomposing water. According to the invention, the ZnTi hydrotalcite nanosheet catalyst is synthesized through the anti-phase microelusion method and applied to the field of hydrogen preparation by decomposing water. The method realizes controllability of a microelustion environment by adjusting and controlling the proportions of surface active agent and water; the hydrotalcite is crystallizes and grows in microelusion; and the particle size of the hydrotalcite can be effectively controlled to range from 40 nm to 100 nm. The solvent used in the method is low in cost and simple to operate and can be recycled; and the hydrotalcite nanosheet catalyst has the advantages of simple synthesizing conditions, cheap raw materials and easiness in large scale industrial production. The ZnTi hydrotalcite synthesized according to the invention has an excellent semi-conductor property, is three times quicker than a traditional micron-sized powder catalyst in hydrogen preparation performance by decomposing water under full spectrum, and is hopefully expected to be widely applied to the fields like photoactivation, adsorption and additives.
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Description

technical field

[0001] The invention belongs to the technical field of nano-catalysts, and in particular relates to a ZnTi hydrotalcite nano-sheet catalyst and its application to photocatalytically decompose water to prepare hydrogen. Background technique

[0002] Due to the increasingly serious energy crisis, the use of renewable energy to produce clean energy—hydrogen energy has become a research hotspot in various countries. The key to solving such problems is to find suitable high-performance catalysts. Hydrotalcites (LDHs) are an important class of anionic layered clay materials. The divalent and trivalent metal cations of the laminates are highly dispersed in the laminates and form an ordered main structure with covalent bonds with hydroxyl groups. The researchers adjusted different types of metal ions through rational design, which endowed the material with multifunctional properties. The ZnTi hydrotalcite formed by introducing Zn and Ti into the hydrotalcite laminat...

Claims

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