• 专利标题:   Preparation of silica-based surface carboxylated graphene oxide self-assembled composite film, involves processing silicon wafer, cleaning, obtaining silicon wafer with silica-based surface, adding graphene oxide solution, and cleaning.
  • 专利号:   CN103058710-A, CN103058710-B
  • 发明人:   HUA C, CHENG X, LI P, CHENG H, SHU D, WANG C
  • 专利权人:   UNIV SHANGHAI JIAOTONG
  • 国际专利分类:   C04B041/50, C01B031/04
  • 专利详细信息:   CN103058710-A 24 Apr 2013 C04B-041/50 201364 Pages: 6 Chinese
  • 申请详细信息:   CN103058710-A CN10011688 11 Jan 2013
  • 优先权号:   CN10011688

▎ 摘  要

NOVELTY - A silicon wafer is subjected to processing, cleaned, dried, and the silicon wafer is provided into a Piranha solution to soak. The silicon wafer is taken out from the Piranha solution, cleaned, and dried, to obtain product (A). The obtained product (A) is cleaned, dried, provided into a graphene oxide solution to carry out carboxylation reaction, to obtain product (B). The product (B) is taken out, cleaned, dried, and carrying out heat preservation on the product (B), to obtain silica-based surface carboxylated graphene oxide self-assembled composite film. USE - Preparation of silica-based surface carboxylated graphene oxide self-assembled composite film (claimed). ADVANTAGE - The method enables economical preparation of silica-based surface carboxylated graphene oxide self-assembled composite film having friction coefficient of 0.18-0.22 and wear life of more than 2400 seconds, by a simple process. DETAILED DESCRIPTION - A silicon wafer is subjected to processing, cleaned, dried, and the silicon wafer is provided into a Piranha solution to soak. The silicon wafer is taken out from the Piranha solution, cleaned, dried, and the silicon wafer is added into a silane solution to carry out self-assembling reaction, to obtain product (A). The obtained product (A) is taken out, cleaned, and dried, to obtain silicon wafer with silica-based surface on which an aminosilane film is arranged. The obtained product is provided into a graphene oxide solution to carry out carboxylation reaction, to obtain product (B). The product (B) is taken out, cleaned, dried, and carrying out heat preservation on the product (B), to obtain silica-based surface carboxylated graphene oxide self-assembled composite film.