title: Synthesis of mesoporous silica by a surface charge reversal route.
abstract: Pore size adjustable mesoporous silica was synthesized by adsorption of varying amounts of sodium dodecyl benzenesulfonate at the surface of silica activated by zinc ion via a novel surface charge reversal route. The pore size and volume can be adjusted from 5.9 to 13.76 nm and 0.88 to 1.08 cm(3) g(-1), respectively, with increasing the SDBS concentration from 0.77 to 3.08 mmol L(-1). Adsorption of Zn(2+) as a function of pH and N(2) adsorption/desorption isotherms demonstrated that the metal ions such as Zn(2+) could be readily removed with dilute nitric acid without apparent collapse of the pore structure at the proper range of SDBS concentration.
authors.affiliation: School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
authors.forename: Wei-Min
authors.initials: WM
authors.lastname: Zhang
authors.forename: Jia
authors.initials: J
authors.lastname: Liu
authors.forename: Zhong-Xi
authors.initials: ZX
authors.lastname: Sun
authors.forename: Bao-Qiang
authors.initials: BQ
authors.lastname: Fan
authors.forename: Zhen-Dong
authors.initials: ZD
authors.lastname: Yang
authors.forename: Wills
authors.initials: W
authors.lastname: Forsling