Enhanced photocatalytic activity of graphene oxide decorated on TiO2 films under UV and visible irradiation

被引：102

作者：

Yoo, Dae-Hwang ^{[1
,2
]}

Tran Viet Cuong ^{[3
]}

Pham, Viet Hung ^{[3
]}

Chung, Jin Suk ^{[3
]}

Khoa, Nguyen Tri ^{[1
,2
]}

Kim, Eui Jung ^{[3
]}

Hahn, Sung Hong ^{[1
,2
]}

机构：

[1] Univ Ulsan, Dept Phys, Ulsan 680749, South Korea

[2] Univ Ulsan, Energy Harvest Storage Res Ctr, Ulsan 680749, South Korea

[3] Univ Ulsan, Dept Chem Engn, Ulsan 680749, South Korea

来源：

CURRENT APPLIED PHYSICS | 2011年 / 11卷 / 03期

关键词：

Photocatalytic activity; TiO2 thin films; Graphene oxide; RE sputtering method;

D O I：

10.1016/j.cap.2010.11.077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photocatalytic TiO2 films were prepared using RF magnetron sputtering and three kinds of graphene oxide (GO) solutions with different concentration of 0.05 mg GO, 0.03 mg GO, and 0.01 mg GO in 10 ml ethanol were coated on TiO2 films, respectively. Structures and morphologies of the samples were examined by AFM, SEM, and Raman and photocatalytic properties under UV and visible irradiation were examined respectively. The efficiency of the photodegradation is enhanced when TiO2 thin film was coated with GO, it is related to its giant pi-conjugation system and two-dimensional planar structure and efficient charge separation by coating GO. The maximum photodegradation rate was observed for TiO2 thin film coated with 0.03 mg GO. It is attributed to the increase of absorbance and scattering of photons through excess carbon in the photosystem. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：805 / 808

页数：4

共 6 条

[1] Honeycomb Carbon: A Review of Graphene [J].

Allen, Matthew J. ;

Tung, Vincent C. ;

Kaner, Richard B. .

CHEMICAL REVIEWS, 2010, 110 (01) :132-145

[2] PEGylated nanographene oxide for delivery of water-insoluble cancer drugs [J].

Liu, Zhuang ;

Robinson, Joshua T. ;

Sun, Xiaoming ;

Dai, Hongjie .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (33) :10876-+

[3] Fast and simple fabrication of a large transparent chemically-converted graphene film by spray-coating [J].

Pham, Viet Hung ;

Cuong, Tran Viet ;

Hur, Seung Hyun ;

Shin, Eun Woo ;

Kim, Jae Seong ;

Chung, Jin Suk ;

Kim, Eui Jung .

CARBON, 2010, 48 (07) :1945-1951

[4] One-step synthesis of superior dispersion of chemically converted graphene in organic solvents [J].

Viet Hung Pham ;

Tran Viet Cuong ;

Nguyen-Phan, Thuy-Duong ;

Hai Dinh Pham ;

Kim, Eui Jung ;

Hur, Seung Hyun ;

Shin, Eun Woo ;

Kim, Sunwook ;

Chung, Jin Suk .

CHEMICAL COMMUNICATIONS, 2010, 46 (24) :4375-4377

[5] TiO2-graphene nanocomposites.: UV-assisted photocatalytic reduction of graphene oxide [J].

Williams, Graeme ;

Seger, Brian ;

Kamat, Prashant V. .

ACS NANO, 2008, 2 (07) :1487-1491

[6] P25-Graphene Composite as a High Performance Photocatalyst [J].

Zhang, Hao ;

Lv, Xiaojun ;

Li, Yueming ;

Wang, Ying ;

Li, Jinghong .

ACS NANO, 2010, 4 (01) :380-386

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