Open AccessFabrication and testing of engineered forms of self-assembled monolayers on mesoporous silica (SAMMS) material
Author(s) -
Shas V. Mattigod,
J. Liu,
Glen E. Fryxell,
S. Baskaran,
Maogang Gong,
ZhenZhou Nie,
Xinxin Feng,
K. Thomas Klasson
Publication year - 1998
Language(s) - English
Resource type - Reports
DOI - 10.2172/663547
Subject(s) - monolayer , materials science , mesoporous silica , adsorption , fabrication , mesoporous material , rod , thiol , self assembly , nanotechnology , chemical engineering , chemistry , organic chemistry , catalysis , medicine , alternative medicine , pathology , engineering
A number of engineered forms such as flexible extrudates, beads, and rods were fabricated using thiol-SAMMS (Self-Assembled Monolayers on Mesoporous Silica) and tested for their mercury adsorption capacities. The flexible extrudate form had a mercury adsorption capacity of 340 mg/g but was found to be structurally unstable. A structurally sound bead form of thiol-SAMMS was fabricated with 5, 10, 25, and 40% by weight clay binder (attapulgite) and successfully functionalized. A structurally stable but non-optimized rod form of thiol-SAMMS was also fabricated. Bench-scale processes were developed to silanize and functionalize mesoporous silica beads made with attapulgite clay binder. Contact angle measurements were conducted to assess the degree of surface coverage by functional groups on mesoporous silica materials