Membrane surface modification with TiO2-graphene oxide for enhanced photocatalytic performance

被引：245

作者：

Gao, Yong ^{[1
,2
]}

Hu, Meng ^{[1
]}

Mi, Baoxia ^{[1
]}

机构：

[1] Univ Maryland, Dept Civil & Environm Engn, College Pk, MD 20742 USA

[2] Jiangsu Univ Technol, Sch Chem & Environm Engn, Changzhou 213001, Jiangsu, Peoples R China

来源：

JOURNAL OF MEMBRANE SCIENCE | 2014年 / 455卷

基金：

美国国家科学基金会;

关键词：

Photocatalysis; Sunlight; Graphene oxide; TiO2; Surface modification; Layer-by-layer assembly; TIO2-REDUCED GRAPHENE OXIDE; TIO2; NANOCOMPOSITES; REDUCTION; COMPOSITE; PURIFICATION; DEGRADATION; TECHNOLOGY; SEPARATION; FILMS;

D O I：

10.1016/j.memsci.2014.01.011

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Taking advantage of the unique property of graphene oxide (GO) nanomaterials in expanding the light response range of TiO2, we modified the surface of water filtration membranes with TiO2-GO to enhance their photocatalytic activities under both UV and sunlight irradiations. A layer-by-layer approach was employed to sequentially deposit TiO2 nanoparticles and GO nanosheets on a polysullone base membrane, with GO partially reduced via ethanol/UV post-treatment. The grafting of TiO2-GO on the membrane surface was confirmed through the analysis of QCM-D measurements and SEM images. We then studied the photocatalytic properties of the surface-modified membranes in both batch and filtration experiments using methylene blue (MB) as a representative organic contaminant. Compared with polysulfone membranes surface-modified with TiO2 and GO, respectively, the TiO2-GO membrane exhibited significantly improved MB photodegradation kinetics under UV (about 60-80% faster) and sunlight (3-4 Limes faster). Besides, the membrane flux increased as a result of the photo-enhanced hydrophilicity and contaminant degradation. Therefore, surface modification by TiO2-GO grafting provides a very promising route to the fabrication of high-performance photocatalytic membranes for sustainable water treatment. (C) 2014 Elsevier B.V. All rights reserved

引用

页码：349 / 356

页数：8

共 47 条

[21] Enhanced visible light photocatalytic activity of C-N-codoped TiO2 films for the degradation of microcystin-LR [J].

Liu, Guanglong ;

Han, Changseok ;

Pelaez, Miguel ;

Zhu, Duanwei ;

Liao, Shuijiao ;

Likodimos, Vlassis ;

Kontos, Athanassios G. ;

Falaras, Polycarpos ;

Dionysiou, Dionysios D. .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2013, 372 :58-65

[22] Self-Assembling TiO2 Nanorods on Large Graphene Oxide Sheets at a Two-Phase Interface and Their Anti-Recombination in Photocatalytic Applications [J].

Liu, Jincheng ;

Bai, Hongwei ;

Wang, Yinjie ;

Liu, Zhaoyang ;

Zhang, Xiwang ;

Sun, Darren Delai .

ADVANCED FUNCTIONAL MATERIALS, 2010, 20 (23) :4175-4181

[23] Microwave-assisted synthesis of TiO2-reduced graphene oxide composites for the photocatalytic reduction of Cr(VI) [J].

Liu, Xinjuan ;

Pan, Likun ;

Lv, Tian ;

Zhu, Guang ;

Lu, Ting ;

Sun, Zhuo ;

Sun, Changqing .

RSC ADVANCES, 2011, 1 (07) :1245-1249

[24] Hydrophilic modification of poly(ether sulfone) ultrafiltration membrane surface by self-assembly of TiO2 nanoparticles [J].

Luo, ML ;

Zhao, JQ ;

Tang, W ;

Pu, CS .

APPLIED SURFACE SCIENCE, 2005, 249 (1-4) :76-84

[25] Formation of appropriate sites on nanofiltration membrane surface for binding TiO2 photo-catalyst: Performance, characterization and fouling-resistant capability [J].

Mansourpanah, Y. ;

Madaeni, S. S. ;

Rahimpour, A. ;

Farhadian, A. ;

Taheri, A. H. .

JOURNAL OF MEMBRANE SCIENCE, 2009, 330 (1-2) :297-306

[26] Improved Synthesis of Graphene Oxide [J].

Marcano, Daniela C. ;

Kosynkin, Dmitry V. ;

Berlin, Jacob M. ;

Sinitskii, Alexander ;

Sun, Zhengzong ;

Slesarev, Alexander ;

Alemany, Lawrence B. ;

Lu, Wei ;

Tour, James M. .

ACS NANO, 2010, 4 (08) :4806-4814

[27] Hydrogen Bond Networks in Graphene Oxide Composite Paper: Structure and Mechanical Properties [J].

Medhekar, Nikhil V. ;

Ramasubramaniam, Ashwin ;

Ruoff, Rodney S. ;

Shenoy, Vivek B. .

ACS NANO, 2010, 4 (04) :2300-2306

[28] Enhanced chemical interaction between TiO2 and graphene oxide for photocatalytic decolorization of methylene blue [J].

Min, YuLin ;

Zhang, Kan ;

Zhao, Wei ;

Zheng, FangCai ;

Chen, YouCun ;

Zhang, YuanGuang .

CHEMICAL ENGINEERING JOURNAL, 2012, 193 :203-210

[29] UV-assisted photocatalytic synthesis of TiO2-reduced graphene oxide with enhanced photocatalytic activity in decomposition of sarin in gas phase [J].

Mohamed, R. M. .

DESALINATION AND WATER TREATMENT, 2012, 50 (1-3) :147-156

[30] Design of graphene-based TiO2 photocatalysts-a review [J].

Morales-Torres, Sergio ;

Pastrana-Martinez, Luisa M. ;

Figueiredo, Jose L. ;

Faria, Joaquim L. ;

Silva, Adrian M. T. .

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2012, 19 (09) :3676-3687

← 1 2 3 4 5 →