Porous Structure of Mesoporous Silica Studied by Positron Annihilation Lifetime Spectroscopy

Yang Xi; Wei Chang Hao; Dan Ni Wang; Tian Min Wang; Run Sheng Yu; Bao Yi Wang; Long Wei

doi:10.4028/www.scientific.net/MSF.607.207

Paper Titles

Tungsten Oxide Nanostructures Growth in HFCVD System by Slow Positron Beam
p.195

Positron Annihilation in Carbon Nanotubes
p.198

Formation of Ordered Pores Determined by Positronium Time of Flight Spectroscopy
p.201

Influence of Sintering Temperature on Defects in Porous Silica Monoliths Studied by Positron Annihilation Techniques
p.204

Porous Structure of Mesoporous Silica Studied by Positron Annihilation Lifetime Spectroscopy
p.207

Temperature Dependence of Free Volume in Epoxy/Rectorite Nanocomposites by Positron Annihilation
p.210

Influence of Temperature on Intratrack Processes and Ps Formation and Behaviour in Liquid Water
p.213

Freezing of Nanodroplets: Phase Transition of Organic Liquids Confined in Nanopores Studied by Positron Annihilation Spectroscopy
p.218

Positron Method for Diagnostics of Carcinogens
p.223

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Porous Structure of Mesoporous Silica Studied by Positron Annihilation Lifetime Spectroscopy

Abstract:

In this paper, a series of mesoporous silica particles with different pore diameters were fabricated using tetraethyl orthosilicate (TEOS) as the network precursor, hexadecyl trimethyl ammonium bromide (CTAB) as a structure directing agent and 1,3,5-Trimethylbenzene (TMB) as a pore enlarge reagent. Compared with SAXRD and BET, the PALS may not only show the mesoporous information but also provide the structure information of microporous.