title: Ordered nanoporous silica with periodic 30-60 nm pores as an effective support for gold nanoparticle catalysts with enhanced lifetime.
abstract: We demonstrate that supermolecular templating allows tuning the pore size of ordered mesoporous materials in the once elusive range from 30 nm to more than 60 nm through simple control of synthetic variables (salt/supermolecule concentration and hydrothermal temperature). Gold nanoparticles (AuNPs) within the extra-large pores exhibit dramatically increased lifetime compared to those located within relatively small mesopores due to the enhanced mass diffusion that suppresses coke deposition on AuNPs.
authors.affiliation: Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang Province 310027, China.
authors.forename: Guicen
authors.initials: G
authors.lastname: Ma
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Yan
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Li
authors.forename: Liping
authors.initials: L
authors.lastname: Xiao
authors.forename: Zhangjun
authors.initials: Z
authors.lastname: Huang
authors.forename: Yanping
authors.initials: Y
authors.lastname: Lu
authors.forename: Jie
authors.initials: J
authors.lastname: Fan
mesh_terms: D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission
chemical_list: D006046:Gold