Immobilization of PDMS-SiO2-TiO2 composite for the photocatalytic degradation of dye AO-7

被引：22

作者：

Xu, Feigao ^{[1
]}

Tan, Wencheng ^{[2
]}

Liu, Heng ^{[2
]}

Li, Dan ^{[2
]}

Li, Yuexiang ^{[1
]}

Wang, Min ^{[1
]}

机构：

[1] Nanchang Univ, Coll Chem, Nanchang 330031, Peoples R China

[2] Sch Resources Environm & Chem Engn, Nanchang 330031, Jiangxi, Peoples R China

来源：

WATER SCIENCE AND TECHNOLOGY | 2016年 / 74卷 / 07期

关键词：

PDMS-SiO2-TiO2; composite; photocatalytic efficiency; supports; titanium dioxide; TITANIUM-DIOXIDE; HETEROGENEOUS PHOTOCATALYSIS; STONE PROTECTION; PDMS-OH; TIO2; TEOS; PERFORMANCE; CATALYST; WATER; CONSOLIDATION;

D O I：

10.2166/wst.2016.260

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Crack-free PDMS-SiO2-TiO2 composite as photocatalyst was prepared for degrading dyes by using thin-film fixed bed reactor. The hydrophobic surface of the photocatalyst loaded with PDMS-SiO2-TiO2 composite could be considered as an extractant for organic pollutants. The effect of different supports including pumice stone, medicinal stone, and fiberglass for photocatalytic efficiency were compared. Under the same condition, it was found that the photocatalytic degradation effect of dyes was best when PDMS-SiO2-TiO2 composite was fixed on pumice stone rather than medicinal stone or fiberglass. Furthermore, when pumice stone was used as the support for PDMS-SiO2-TiO2 composite, the photocatalytic degradation effect of dyes hardly decreased after five cycles.

引用

页码：1680 / 1688

页数：9

共 31 条

[21] Photodegradation of alachlor with the TiO2 film immobilised on the glass tube in aqueous solution [J].

Ryu, CS ;

Kim, MS ;

Kim, BW .

CHEMOSPHERE, 2003, 53 (07) :765-771

[22] TEOS-colloidal silica-PDMS-OH hybrid formulation used for stone consolidation [J].

Salazar-Hernandez, Carmen ;

Puy Alquiza, Maria Jesus ;

Salgado, Patricia ;

Cervantes, Jorge .

APPLIED ORGANOMETALLIC CHEMISTRY, 2010, 24 (06) :481-488

[23] Photocatalytic treatment of water containing imazalil using an immobilized TiO2 photoreactor [J].

Santiago, Dunia E. ;

Espino-Estevez, M. R. ;

Gonzalez, Gabriel V. ;

Arana, J. ;

Gonzalez-Diaz, O. ;

Dona-Rodriguez, J. M. .

APPLIED CATALYSIS A-GENERAL, 2015, 498 :1-9

[24] Immobilisation of titanium dioxide onto supporting materials in heterogeneous photocatalysis: A review [J].

Shan, Ang Ying ;

Ghazi, Tinia Idaty Mohd. ;

Rashid, Suraya Abdul .

APPLIED CATALYSIS A-GENERAL, 2010, 389 (1-2) :1-8

[25] Synthesis of inorganic-organic hybrid materials from TEOS, TBT and PDMS [J].

Téllez, L ;

Rubio, J ;

Rubio, F ;

Morales, E ;

Oteo, JL .

JOURNAL OF MATERIALS SCIENCE, 2003, 38 (08) :1773-1780

[26] PHOTOCATALYTIC DEGRADATION OF ORGANIC CONTAMINANTS IN WATER WITH TIO2 SUPPORTED ON POLYTHENE FILMS [J].

TENNAKONE, K ;

TILAKARATNE, CTK ;

KOTTEGODA, IRM .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1995, 87 (02) :177-179

[27] Photocatalytic properties of titanium dioxide sputtered on a nanostructured substrate [J].

Turkevych, I. ;

Pihosh, Y. ;

Goto, A. ;

Kasahara, A. ;

Tosa, A. ;

Kato, S. ;

Takehana, K. ;

Takamasu, T. ;

Kido, G. ;

Koguchi, N. .

THIN SOLID FILMS, 2008, 516 (09) :2387-2391

[28] Effect of the addition of hydroxyl-terminated polydimethylsiloxane to TEOS-based stone protective materials [J].

Xu, Feigao ;

Li, Dan .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2013, 65 (02) :212-219

[29] Effects of addition of colloidal silica particles on TEOS-based stone protection using n-octylamine as a catalyst [J].

Xu, Feigao ;

Li, Dan ;

Zhang, Qingjian ;

Zhang, Hean ;

Xu, Junying .

PROGRESS IN ORGANIC COATINGS, 2012, 75 (04) :429-434

[30] Effect of the addition of hydroxyl-terminated polydimethylsiloxane to TEOS-based stone consolidants [J].

Zarraga, Ramon ;

Cervantes, Jorge ;

Salazar-Hernandez, Carmen ;

Wheeler, George .

JOURNAL OF CULTURAL HERITAGE, 2010, 11 (02) :138-144

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