Preparation of titanium dioxide porous thin films via photopolymerization of the colloidal TiO2 dispersion

被引：3

作者：

Chang, Wenkai ^{[1
]}

Xu, Fujian ^{[1
]}

Mu, Xueyan ^{[1
]}

Ji, Lili ^{[1
]}

Ma, Guiping ^{[1
,2
]}

Wang, Kemin ^{[3
]}

Nie, Jun ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Key Lab Beijing City Preparat & Proc Novel Polyme, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, Changzhou Inst Adv Mat, Changzhou 213164, Peoples R China

[3] Changzhou Univ, Jiangsu Prov Key Lab Solar Cell Mat & Technol, Changzhou 213164, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2013年 / 140卷 / 2-3期

基金：

中国国家自然科学基金;

关键词：

Thin films; Coatings; Fourier transform infrared spectroscopy (FTIR); Phase transitions; PHASE; CRYSTALLIZATION; NANOPARTICLES; KINETICS; COATINGS; BEHAVIOR;

D O I：

10.1016/j.matchemphys.2013.04.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Titanium dioxide (TiO2) thin films with porous structures have been successfully achieved by photopolymerization stimulating the particle dispersion combined TiO2 colloid with photoinitiator and monomer. The photopolymerization monomer Pentaerythritol Triacrylate (PETA) and photoinitiator 2-Hydroxy-2-methyl-propiophenone (HMPP) are added to the TiO2 colloidal solution to form the new colloidal TiO2 dispersion. After coating the dispersion on the substrate, the coating is cured with UV light. With the evaporation of solvent and the formation of microgels induced by polymerization, a phase separation occurs in the system. A porous TiO2 film with various pore sizes from mesoporous to macroporous could be produced after heat treatment. The morphology and size of pores could be tuned by changing the process of phase separation, which is controlled by the composition of colloidal TiO2 dispersion. The content of photoinitiator and the temperature of heat treatment were decided by UV-vis absorption spectra and thermal analysis (DTA-TGA), respectively; Real-Time Fourier-transform infrared (RT-FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray diffractometer (XRD) and high-resolution transmission electron microscopy (HR-TEM) were used to characterize the TiO2 films. The as-prepared TiO2 porous films exhibited higher photocatalytic activity for degradation methylene blue in comparison with conventional TiO2 dense film due to its porous structure. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：665 / 673

页数：9

共 42 条

[1] Photopolymerization kinetics of multifunctional monomers [J].

Andrzejewska, E .

PROGRESS IN POLYMER SCIENCE, 2001, 26 (04) :605-665

[2]

Anseth KS, 1995, ADV POLYM SCI, V122, P177

[3] Promises and problems of mesoscale materials chemistry or why meso? [J].

Antonietti, M ;

Ozin, GA .

CHEMISTRY-A EUROPEAN JOURNAL, 2004, 10 (01) :28-41

[4] HIGH-PURITY, MONODISPERSE TIO2 POWDERS BY HYDROLYSIS OF TITANIUM TETRAETHOXIDE .1. SYNTHESIS AND PHYSICAL-PROPERTIES [J].

BARRINGER, EA ;

BOWEN, HK .

LANGMUIR, 1985, 1 (04) :414-420

[5] Reactivity of Monovinyl (Meth)acrylates Containing Cyclic Carbonates [J].

Berchtold, Kathryn A. ;

Nie, Jun ;

Stansbury, Jeffrey W. ;

Bowman, Christopher N. .

MACROMOLECULES, 2008, 41 (23) :9035-9043

[6] TiO2 films prepared by ultrasonic spray pyrolysis of nanosize precursor [J].

Blesic, MD ;

Saponjic, ZV ;

Nedeljkovic, JM ;

Uskokovic, DP .

MATERIALS LETTERS, 2002, 54 (04) :298-302

[7] 3D hexagonal (R-3m) mesostructured nanocrystalline titania thin films: Synthesis and characterization [J].

Materials Chemistry Research Group, Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ont. M5S 3H6, Canada ;

不详 ;

不详 .

Adv. Funct. Mater., 2006, 13 (1731-1738) :1731-1738

[8] Experimental and theoretical investigations of porous structure formation in electrospun fibers [J].

Dayal, Pratyush ;

Liu, Jing ;

Kumar, Satish ;

Kyu, Thein .

MACROMOLECULES, 2007, 40 (21) :7689-7694

[9] Reactive ballistic deposition of porous TiO2 films:: Growth and characterization [J].

Flaherty, David W. ;

Dohnalek, Zdenek ;

Dohnalkova, Alice ;

Arey, Bruce W. ;

McCready, David E. ;

Ponnusamy, Nachimuthu ;

Mullins, C. Buddie ;

Kay, Bruce D. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (12) :4765-4773

[10] Preparation and reversible photo-crosslinking/photo-cleavage behavior of 4-methylcoumarin functionalized hyperbranched polyester [J].

Fu, Qi ;

Cheng, Liangliang ;

Zhang, Yong ;

Shi, Wenfang .

POLYMER, 2008, 49 (23) :4981-4988

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