title: Mesoporous silica coating on carbon nanotubes: layer-by-layer method.
abstract: It is of great interest to develop a simple, general, and easy-handling procedure for mesoporous silica coating. A facile, single-step method to coat iron oxide nanoparticles has been reported by Hyeon's group. However, up to present, this method only successfully applied to those zero-dimensional nanostructures heavily capped by cetyltrimethyl ammonium bromide (CTAB); no others are reported. It is unknown how this simple method is feasible in coating those nanostructures not capped by CTAB. Herein, using carbon nanotubes (CNTs) as the model, through an analogous layer-by-layer assembly method, many more CTAB molecules were found to anchor to CNTs, on which uniform mesoporous silica shells can successfully be formed by Hyeon's coating method. We believe that this contribution will pave the way for advancing the single-step method to become a general protocol in the mesoporous silica coating field.
authors.affiliation: Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, PR China.
authors.forename: Xiaoyong
authors.initials: X
authors.lastname: Deng
authors.forename: Ping
authors.initials: P
authors.lastname: Qin
authors.forename: Man
authors.initials: M
authors.lastname: Luo
authors.forename: Erlei
authors.initials: E
authors.lastname: Shao
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
authors.forename: Xing
authors.initials: X
authors.lastname: Yang
authors.forename: Yanwen
authors.initials: Y
authors.lastname: Wang
authors.forename: Haifa
authors.initials: H
authors.lastname: Shen
authors.forename: Zheng
authors.initials: Z
authors.lastname: Jiao
authors.forename: Minghong
authors.initials: M
authors.lastname: Wu
mesh_terms: D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D002593:Cetrimonium Compounds; D037742:Nanotubes, Carbon; D012822:Silicon Dioxide; D000077286:Cetrimonium