Patent · US Active

Titanium-dioxide-based double-layer hollow material, preparation method thereof, and application thereof in photocatalytic treatment of hydrogen sulfide

US10160659B2 · kind B2 · utility

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10Claims

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Assignee

Soochow University · CN

Inventors

Jianmei Lu · Suzhou, CN
Dongyun Chen · Suzhou, CN
Jun Jiang · Shanghai, CN

Key dates

Filing date	Dec 25, 2017
Grant date	Dec 25, 2018
Priority date	—
Expiry date	Dec 25, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2003/2241
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A preparation method of a titanium-dioxide-based double-layer hollow material includes the following steps: (1) using polystyrene nanospheres with particle size of 180 nm as a template, tetrabutyl titanate as a precursor, to prepare hollow titanium dioxide by calcining; (2) subjecting said hollow titanium dioxide to carboxylation modification to prepare carboxylated titanium dioxide; and (3) dispersing said carboxylated titanium dioxide in ethanol, using chromic nitrate nonahydrate as an assembly agent and trimesic acid as a crosslinking agent to carry out layer-by-layer self-assembly so as to prepare the titanium-dioxide-based double-layer hollow material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.