title: Opening and blocking the inner-pores of halloysite.
abstract: Aggregation and dispersion behaviours of halloysite nanotubes (HNTs) were influenced by pH. The meso- and micro-porosity of halloysite were determined by N2 gas physisorption. The blocking and opening of halloysite nanotube pores with acid, neutral, and base treatment were detected in a micro- and mesoporous matrix of tunable porosity. The inner pores of HNTs were opened with base treatment, but were closed with acid or neutral treatment.
authors.affiliation: Department of Chemistry, Hanyang University, Seoul 133-791, Korea.
authors.forename: Yongho
authors.initials: Y
authors.lastname: Joo
authors.forename: Jae Hyun
authors.initials: JH
authors.lastname: Sim
authors.forename: Yangjun
authors.initials: Y
authors.lastname: Jeon
authors.forename: Sang Uck
authors.initials: SU
authors.lastname: Lee
authors.forename: Daewon
authors.initials: D
authors.lastname: Sohn