Issue 40, 2013
From the journal:

Chemical Communications

Opening and blocking the inner-pores of halloysite†

Yongho Joo,ab   Jae Hyun Sim,c   Yangjun Jeon,a   Sang Uck Leed  and  Daewon Sohn*a  

* Corresponding authors

a Department of Chemistry, Hanyang University, Seoul 133-791, Korea
E-mail: dsohn@hanyang.ac.kr
Fax: +82 2 2299 0762
Tel: +822 2220 0933

b Department of Materials Science and Engineering, University of Wisconsin, Madison, WI 53706, USA

c Department of Chemistry, Virginia Tech., Blacksburg, VA 24061, USA

d Department of Chemistry, University of Ulsan, Ulsan 680-749, Korea

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.

Graphical abstract: Opening and blocking the inner-pores of halloysite

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Article information

DOI
https://doi.org/10.1039/C3CC40465J
Article type
Communication
Submitted
19 Jan 2013
Accepted
26 Mar 2013
First published
26 Mar 2013

Chem. Commun., 2013,49, 4519-4521

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Opening and blocking the inner-pores of halloysite

Y. Joo, J. H. Sim, Y. Jeon, S. U. Lee and D. Sohn, Chem. Commun., 2013, 49, 4519 DOI: 10.1039/C3CC40465J

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