Preparation of Novel Mesoporous Silica Using a Self-Assembled Graphene Oxide Template.

Abstract:

:Novel mesoporous silicas rolled with silica sheets with 2D regular spacing were prepared using a self-assembled graphene oxide (GO) template formed by mixing GO with Pluronic123 (P123). Self-assembled GO templated mesoporous silicas (SGT-PMS) showed well-developed X-ray diffraction peaks with d-spacings of 9.8-10.8 nm depending on the amount of GO, indicating mesoporous structures. The specific surface areas increased from 603.8 to 861.2 m2g-1 on adding GO. The pore size distribution was in the range 5.1-5.8 nm and pore volume in the range 0.80-0.99 m3g-1. The SEM images of SGT-PMS showed irregular elliptical particles with various sizes. TEM images showed that the cross section of SGT-PMS particles comprises a roll of silica sheets with 2D regular spacing. The pore walls of SGT-PMS are firmer and thicker than those for PMS without GO as indicated by the corresponding intensities of Q3 and Q4 signals. These results were explained well by the self-assembled GO templating mechanism.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Park KW,Kwon OY

doi

10.1038/s41598-020-63017-4

subject

Has Abstract

pub_date

2020-04-10 00:00:00

pages

6173

issue

1

issn

2045-2322

pii

10.1038/s41598-020-63017-4

journal_volume

10

pub_type

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