The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 2014
Filed:
Mar. 27, 2012
Wensheng Yang, Beijing, CN;
Jie Sun, Beijing, CN;
Haimei Liu, Beijing, CN;
Xu Chen, Beijing, CN;
Xue Duan, Beijing, CN;
Wensheng Yang, Beijing, CN;
Jie Sun, Beijing, CN;
Haimei Liu, Beijing, CN;
Xu Chen, Beijing, CN;
Xue Duan, Beijing, CN;
Beijing University of Chemical Technology, Beijing, CN;
Abstract
The present invention relates to a method for preparing graphene using the two-dimensional confined space between the layers of inorganic layered materials. Such method comprises the following steps: mix a soluble salt of a divalent metal ion M, a soluble salt of a trivalent metal ion M', a soluble salt of a chain alkyl anion Aand a carbon source molecule C and dissolve them in deionized and CO-eliminated water to prepare a mixed salt solution; mix the mixed salt solution with an alkali solution under nitrogen protection and subject them to reaction and crystallization under nitrogen, and filter the suspension obtained thereafter and wash the filter cake with deionized water until the pH of the filtrate is 7 to 7.5, and then dry the filter cake to obtain layered double hydroxides with an intercalated structure; under an inert atmosphere or a reducing atmosphere, calcinate the layered double hydroxides with an intercalated structure to provide a calcinated product; add the calcinated product into a hydrochloric acid solution for ultrasonic treatment, and separate the solution by centrifugation and wash the precipitate obtained by centrifugation with deionized water until the pH of the filtrate is 6.5 to 7 to obtain the graphene.