Preparation of monodispersed spherical titania-octadecylamine particles containing silane-coupling reagents

Kota Shiba, Soh Sato, Makoto Ogawa

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Well-defined spherical titania-octadecylamine (titania-ODA) (titania: titanium dioxide) hybrid particles containing silane-coupling reagents including aminopropyl, sulfanylpropyl, octadecyl, and phenyl groups (molar Ti:silane-coupling reagent ratio of 50:1) were prepared by sol-gel reaction of titanium tetraisopropoxide with the aid of a flow reactor. Average particle sizes were 520, 380, 540, and 510 nm for aminopropyl, sulfanylpropyl, octadecyl, and phenyl group containing particles, respectively. ODA was removed by washing the as-synthesized products with acidic EtOH, resulting in the formation of organosilyl group containing nanoporous titania. The porosity was investigated by the nitrogen adsorption/desorption isotherms (BET surface area of 250 to 400 m 2g -1) and the surface hydrophilicity/hydrophobicity is discussed based on the water and benzene vapor adsorption/desorption isotherms. Crystallization of anatase within the spherical particles is possible by postsynthetic hot water or hydrothermal treatment.

Original languageEnglish
Pages (from-to)1040-1047
Number of pages8
JournalBulletin of the Chemical Society of Japan
Volume85
Issue number9
DOIs
Publication statusPublished - 2012

Fingerprint

Silanes
Isotherms
Desorption
Adsorption
Water
Hydrophilicity
Hydrophobicity
Crystallization
Benzene
Washing
Sol-gels
Nitrogen
Porosity
Particle size
Vapors
titanium dioxide
stearylamine

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Preparation of monodispersed spherical titania-octadecylamine particles containing silane-coupling reagents. / Shiba, Kota; Sato, Soh; Ogawa, Makoto.

In: Bulletin of the Chemical Society of Japan, Vol. 85, No. 9, 2012, p. 1040-1047.

Research output: Contribution to journalArticle

@article{545275302dc146efaab100d4d61c0d10,
title = "Preparation of monodispersed spherical titania-octadecylamine particles containing silane-coupling reagents",
abstract = "Well-defined spherical titania-octadecylamine (titania-ODA) (titania: titanium dioxide) hybrid particles containing silane-coupling reagents including aminopropyl, sulfanylpropyl, octadecyl, and phenyl groups (molar Ti:silane-coupling reagent ratio of 50:1) were prepared by sol-gel reaction of titanium tetraisopropoxide with the aid of a flow reactor. Average particle sizes were 520, 380, 540, and 510 nm for aminopropyl, sulfanylpropyl, octadecyl, and phenyl group containing particles, respectively. ODA was removed by washing the as-synthesized products with acidic EtOH, resulting in the formation of organosilyl group containing nanoporous titania. The porosity was investigated by the nitrogen adsorption/desorption isotherms (BET surface area of 250 to 400 m 2g -1) and the surface hydrophilicity/hydrophobicity is discussed based on the water and benzene vapor adsorption/desorption isotherms. Crystallization of anatase within the spherical particles is possible by postsynthetic hot water or hydrothermal treatment.",
author = "Kota Shiba and Soh Sato and Makoto Ogawa",
year = "2012",
doi = "10.1246/bcsj.20120013",
language = "English",
volume = "85",
pages = "1040--1047",
journal = "Bulletin of the Chemical Society of Japan",
issn = "0009-2673",
publisher = "Chemical Society of Japan",
number = "9",

}

TY - JOUR

T1 - Preparation of monodispersed spherical titania-octadecylamine particles containing silane-coupling reagents

AU - Shiba, Kota

AU - Sato, Soh

AU - Ogawa, Makoto

PY - 2012

Y1 - 2012

N2 - Well-defined spherical titania-octadecylamine (titania-ODA) (titania: titanium dioxide) hybrid particles containing silane-coupling reagents including aminopropyl, sulfanylpropyl, octadecyl, and phenyl groups (molar Ti:silane-coupling reagent ratio of 50:1) were prepared by sol-gel reaction of titanium tetraisopropoxide with the aid of a flow reactor. Average particle sizes were 520, 380, 540, and 510 nm for aminopropyl, sulfanylpropyl, octadecyl, and phenyl group containing particles, respectively. ODA was removed by washing the as-synthesized products with acidic EtOH, resulting in the formation of organosilyl group containing nanoporous titania. The porosity was investigated by the nitrogen adsorption/desorption isotherms (BET surface area of 250 to 400 m 2g -1) and the surface hydrophilicity/hydrophobicity is discussed based on the water and benzene vapor adsorption/desorption isotherms. Crystallization of anatase within the spherical particles is possible by postsynthetic hot water or hydrothermal treatment.

AB - Well-defined spherical titania-octadecylamine (titania-ODA) (titania: titanium dioxide) hybrid particles containing silane-coupling reagents including aminopropyl, sulfanylpropyl, octadecyl, and phenyl groups (molar Ti:silane-coupling reagent ratio of 50:1) were prepared by sol-gel reaction of titanium tetraisopropoxide with the aid of a flow reactor. Average particle sizes were 520, 380, 540, and 510 nm for aminopropyl, sulfanylpropyl, octadecyl, and phenyl group containing particles, respectively. ODA was removed by washing the as-synthesized products with acidic EtOH, resulting in the formation of organosilyl group containing nanoporous titania. The porosity was investigated by the nitrogen adsorption/desorption isotherms (BET surface area of 250 to 400 m 2g -1) and the surface hydrophilicity/hydrophobicity is discussed based on the water and benzene vapor adsorption/desorption isotherms. Crystallization of anatase within the spherical particles is possible by postsynthetic hot water or hydrothermal treatment.

UR - http://www.scopus.com/inward/record.url?scp=84866605310&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84866605310&partnerID=8YFLogxK

U2 - 10.1246/bcsj.20120013

DO - 10.1246/bcsj.20120013

M3 - Article

AN - SCOPUS:84866605310

VL - 85

SP - 1040

EP - 1047

JO - Bulletin of the Chemical Society of Japan

JF - Bulletin of the Chemical Society of Japan

SN - 0009-2673

IS - 9

ER -