Anatase crystal growth and photocatalytic characteristics of hot water-treated polyethylene oxide-titania nanohybrids

Yun Mo Sung; Yong Ji Lee; Seong Min Lee

doi:10.1016/j.jcrysgro.2004.03.056

Anatase crystal growth and photocatalytic characteristics of hot water-treated polyethylene oxide-titania nanohybrids

Yun Mo Sung, Yong Ji Lee, Seong Min Lee

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

13 Citations (Scopus)

Abstract

Hybrid polyethylene oxide (PEO)-TiO₂ and pure TiO₂ powders were synthesized using a sol-gel route and hot water treated at 90°C. Anatase phase formation characteristics were investigated and compared for each powder using X-ray diffraction (XRD). Hybrid powder showed enhanced anatase formation kinetics and thus high crystallinity with anatase phase compared to pure TiO₂. Enhanced kinetics and crystallinity of hybrids was discussed based upon the increased surface area coming from dissolution of PEO during hot water treatment, which in turn induced formation and rearrangement of increased number of free Ti-OH bonds. By condensation reaction of Ti-OH bonds resultant Ti-O-Ti bonds would readily form and grow into anastase crystals. Hybrid powder showed well-developed anatase crystals leading to much enhanced photocatalytic properties compared to pure TiO₂ powder.

Original language	English
Pages (from-to)	312-316
Number of pages	5
Journal	Journal of Crystal Growth
Volume	267
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jcrysgro.2004.03.056
Publication status	Published - 2004 Jun 15
Externally published	Yes

Bibliographical note

Funding Information:
This study was supported by Korea Science & Engineering Foundation (KOSEF) through a basic science program (R05-2003-000-10503-0) in 2003. Professor W.-S. Chae at Daejin University helped performing experiments for photocatalytic properties.

Keywords

A1. Nanostructures
A2. Hydrothermal crystal growth
B2. Semiconducting materials

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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10.1016/j.jcrysgro.2004.03.056

Cite this

@article{97c548203f5d44e39402a3032d7ff722,

title = "Anatase crystal growth and photocatalytic characteristics of hot water-treated polyethylene oxide-titania nanohybrids",

abstract = "Hybrid polyethylene oxide (PEO)-TiO2 and pure TiO2 powders were synthesized using a sol-gel route and hot water treated at 90°C. Anatase phase formation characteristics were investigated and compared for each powder using X-ray diffraction (XRD). Hybrid powder showed enhanced anatase formation kinetics and thus high crystallinity with anatase phase compared to pure TiO2. Enhanced kinetics and crystallinity of hybrids was discussed based upon the increased surface area coming from dissolution of PEO during hot water treatment, which in turn induced formation and rearrangement of increased number of free Ti-OH bonds. By condensation reaction of Ti-OH bonds resultant Ti-O-Ti bonds would readily form and grow into anastase crystals. Hybrid powder showed well-developed anatase crystals leading to much enhanced photocatalytic properties compared to pure TiO2 powder.",

keywords = "A1. Nanostructures, A2. Hydrothermal crystal growth, B2. Semiconducting materials",

author = "Sung, {Yun Mo} and Lee, {Yong Ji} and Lee, {Seong Min}",

note = "Funding Information: This study was supported by Korea Science & Engineering Foundation (KOSEF) through a basic science program (R05-2003-000-10503-0) in 2003. Professor W.-S. Chae at Daejin University helped performing experiments for photocatalytic properties.",

year = "2004",

month = jun,

day = "15",

doi = "10.1016/j.jcrysgro.2004.03.056",

language = "English",

volume = "267",

pages = "312--316",

journal = "Journal of Crystal Growth",

issn = "0022-0248",

publisher = "Elsevier B.V.",

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T1 - Anatase crystal growth and photocatalytic characteristics of hot water-treated polyethylene oxide-titania nanohybrids

AU - Sung, Yun Mo

AU - Lee, Yong Ji

AU - Lee, Seong Min

N1 - Funding Information: This study was supported by Korea Science & Engineering Foundation (KOSEF) through a basic science program (R05-2003-000-10503-0) in 2003. Professor W.-S. Chae at Daejin University helped performing experiments for photocatalytic properties.

PY - 2004/6/15

Y1 - 2004/6/15

N2 - Hybrid polyethylene oxide (PEO)-TiO2 and pure TiO2 powders were synthesized using a sol-gel route and hot water treated at 90°C. Anatase phase formation characteristics were investigated and compared for each powder using X-ray diffraction (XRD). Hybrid powder showed enhanced anatase formation kinetics and thus high crystallinity with anatase phase compared to pure TiO2. Enhanced kinetics and crystallinity of hybrids was discussed based upon the increased surface area coming from dissolution of PEO during hot water treatment, which in turn induced formation and rearrangement of increased number of free Ti-OH bonds. By condensation reaction of Ti-OH bonds resultant Ti-O-Ti bonds would readily form and grow into anastase crystals. Hybrid powder showed well-developed anatase crystals leading to much enhanced photocatalytic properties compared to pure TiO2 powder.

AB - Hybrid polyethylene oxide (PEO)-TiO2 and pure TiO2 powders were synthesized using a sol-gel route and hot water treated at 90°C. Anatase phase formation characteristics were investigated and compared for each powder using X-ray diffraction (XRD). Hybrid powder showed enhanced anatase formation kinetics and thus high crystallinity with anatase phase compared to pure TiO2. Enhanced kinetics and crystallinity of hybrids was discussed based upon the increased surface area coming from dissolution of PEO during hot water treatment, which in turn induced formation and rearrangement of increased number of free Ti-OH bonds. By condensation reaction of Ti-OH bonds resultant Ti-O-Ti bonds would readily form and grow into anastase crystals. Hybrid powder showed well-developed anatase crystals leading to much enhanced photocatalytic properties compared to pure TiO2 powder.

KW - A1. Nanostructures

KW - A2. Hydrothermal crystal growth

KW - B2. Semiconducting materials

UR - http://www.scopus.com/inward/record.url?scp=2942603243&partnerID=8YFLogxK

U2 - 10.1016/j.jcrysgro.2004.03.056

DO - 10.1016/j.jcrysgro.2004.03.056

M3 - Article

AN - SCOPUS:2942603243

SN - 0022-0248

VL - 267

SP - 312

EP - 316

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

IS - 1-2

ER -

Anatase crystal growth and photocatalytic characteristics of hot water-treated polyethylene oxide-titania nanohybrids

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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