Preparation and characterization of SiO2/TiO2 core-shell particles with controlled shell thickness

Jae Won Lee; Sungmin Kong; Woo Sik Kim; Jinsoo Kim

doi:10.1016/j.matchemphys.2007.05.019

Preparation and characterization of SiO₂/TiO₂ core-shell particles with controlled shell thickness

Jae Won Lee
, Sungmin Kong
, Woo Sik Kim
, Jinsoo Kim

Research output: Contribution to journal › Article › peer-review

105 Citations (Scopus)

Abstract

SiO₂/TiO₂ core-shell particles with controlled shell thickness were prepared by a multistep coating process. The thickness of the titania coating layer was varied from 9 to 57 nm depending on the number of coating steps, from 1 to 5 times. The titania coating resulted in a rough and textured surface of the core-shell particles, increasing the specific surface areas 5-25 times depending on the coating thickness with respect to those of silica particles. FT-IR and XPS results confirmed the existence of Ti{single bond}O{single bond}Si chemical bonding at the interface between the titania coating layer and silica particle surface. The apparent surface coverage was estimated using isoelectric point data.

Original language	English
Pages (from-to)	39-44
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	106
Issue number	1
DOIs	https://doi.org/10.1016/j.matchemphys.2007.05.019
Publication status	Published - 15 Nov 2007

Bibliographical note

Funding Information:
This work was supported by KISTEP New Chemical Process Program under contract number 10023887.

Keywords

Coating
Core-shell
Hydrolysis
Silica
Sol-gel
Titania

Access to Document

10.1016/j.matchemphys.2007.05.019

Cite this

@article{1306efffdecf4f75bf7cb003a9143cc7,

title = "Preparation and characterization of SiO2/TiO2 core-shell particles with controlled shell thickness",

abstract = "SiO2/TiO2 core-shell particles with controlled shell thickness were prepared by a multistep coating process. The thickness of the titania coating layer was varied from 9 to 57 nm depending on the number of coating steps, from 1 to 5 times. The titania coating resulted in a rough and textured surface of the core-shell particles, increasing the specific surface areas 5-25 times depending on the coating thickness with respect to those of silica particles. FT-IR and XPS results confirmed the existence of Ti\{single bond\}O\{single bond\}Si chemical bonding at the interface between the titania coating layer and silica particle surface. The apparent surface coverage was estimated using isoelectric point data.",

keywords = "Coating, Core-shell, Hydrolysis, Silica, Sol-gel, Titania",

author = "Lee, \{Jae Won\} and Sungmin Kong and Kim, \{Woo Sik\} and Jinsoo Kim",

note = "Funding Information: This work was supported by KISTEP New Chemical Process Program under contract number 10023887.",

year = "2007",

month = nov,

day = "15",

doi = "10.1016/j.matchemphys.2007.05.019",

language = "English",

volume = "106",

pages = "39--44",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier BV",

number = "1",

}

TY - JOUR

T1 - Preparation and characterization of SiO2/TiO2 core-shell particles with controlled shell thickness

AU - Lee, Jae Won

AU - Kong, Sungmin

AU - Kim, Woo Sik

AU - Kim, Jinsoo

N1 - Funding Information: This work was supported by KISTEP New Chemical Process Program under contract number 10023887.

PY - 2007/11/15

Y1 - 2007/11/15

N2 - SiO2/TiO2 core-shell particles with controlled shell thickness were prepared by a multistep coating process. The thickness of the titania coating layer was varied from 9 to 57 nm depending on the number of coating steps, from 1 to 5 times. The titania coating resulted in a rough and textured surface of the core-shell particles, increasing the specific surface areas 5-25 times depending on the coating thickness with respect to those of silica particles. FT-IR and XPS results confirmed the existence of Ti{single bond}O{single bond}Si chemical bonding at the interface between the titania coating layer and silica particle surface. The apparent surface coverage was estimated using isoelectric point data.

AB - SiO2/TiO2 core-shell particles with controlled shell thickness were prepared by a multistep coating process. The thickness of the titania coating layer was varied from 9 to 57 nm depending on the number of coating steps, from 1 to 5 times. The titania coating resulted in a rough and textured surface of the core-shell particles, increasing the specific surface areas 5-25 times depending on the coating thickness with respect to those of silica particles. FT-IR and XPS results confirmed the existence of Ti{single bond}O{single bond}Si chemical bonding at the interface between the titania coating layer and silica particle surface. The apparent surface coverage was estimated using isoelectric point data.

KW - Coating

KW - Core-shell

KW - Hydrolysis

KW - Silica

KW - Sol-gel

KW - Titania

UR - https://www.scopus.com/pages/publications/34548828223

U2 - 10.1016/j.matchemphys.2007.05.019

DO - 10.1016/j.matchemphys.2007.05.019

M3 - Article

AN - SCOPUS:34548828223

SN - 0254-0584

VL - 106

SP - 39

EP - 44

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 1

ER -