To What Extent Do Graphene Scaffolds Improve the Photovoltaic and Photocatalytic Response of TiO2 Nanostructured Films?

被引：359

作者：

Ng, Yun Hau ^{[1
,2
,3
]}

Lightcap, Ian V. ^{[1
,2
]}

Goodwin, Kevin ^{[1
,2
]}

Matsumura, Michio ^{[3
]}

Kamat, Prashant V. ^{[1
,2
]}

机构：

[1] Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA

[2] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA

[3] Osaka Univ, Res Ctr Solar Energy Chem, Toyonaka, Osaka 5608531, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2010年 / 1卷 / 15期

关键词：

SENSITIZED SOLAR-CELLS; 2,4-DICHLOROPHENOXYACETIC ACID 2,4-D; CARBON NANOTUBE SCAFFOLDS; FUEL-CELLS; ANCHORING SEMICONDUCTOR; METAL NANOPARTICLES; EPITAXIAL GRAPHENE; METHANOL OXIDATION; OXIDE; REDUCTION;

D O I：

10.1021/jz100728z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Graphene-TiO2 nanocomposites synthesized via a solution-based method involving photocatalytic reduction of graphene oxide have been employed as photoanodes. Nearly 90% enhancement in the photocurrent is seen as reduced graphene oxide serves as electron collector and transporter. Additionally, the graphene TiO2 nanocomposite electrodes exhibit significant activity for the complete photocatalytic decomposition of 2,4-dichlorophenoxyacetic acid (2,4-D). Combined with safe, solution-based synthetic practices, the promising photocurrent and photocatalytic degradation rates provide the framework and motivation for the implementation of graphene-TiO2 nanocomposites on larger scales.

引用

页码：2222 / 2227

页数：6

共 43 条

[1] IMPROVED PHOTOCATALYST OF TIO2/SIO2 PREPARED BY A SOL-GEL SYNTHESIS [J].

ANDERSON, C ;

BARD, AJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (24) :9882-9885

[2] Chemical approach to the realization of electronic devices in epitaxial graphene [J].

Bekyarova, Elena ;

Itkis, Mikhail E. ;

Ramesh, Palanisamy ;

Haddon, Robert C. .

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2009, 3 (06) :184-186

[3] Chemical Modification of Epitaxial Graphene: Spontaneous Grafting of Aryl Groups [J].

Bekyarova, Elena ;

Itkis, Mikhail E. ;

Ramesh, Palanisamy ;

Berger, Claire ;

Sprinkle, Michael ;

de Heer, Walt A. ;

Haddon, Robert C. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (04) :1336-+

[4] Single-walled carbon nanotube scaffolds for dye-sensitized solar cells [J].

Brown, Patrick ;

Takechi, Kensuke ;

Kamat, Prashant V. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (12) :4776-4782

[5] Boosting fuel cell performance with a semiconductor photocatalyst:: TiO2/Pt-Ru hybrid catalyst for methanol oxidation [J].

Drew, K ;

Girishkumar, G ;

Vinodgopal, K ;

Kamat, PV .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (24) :11851-11857

[6] Fullerene-oligophenylenevinylene hybrids: Synthesis, electronic properties, and incorporation in photovoltaic devices [J].

Eckert, JF ;

Nicoud, JF ;

Nierengarten, JF ;

Liu, SG ;

Echegoyen, L ;

Barigelletti, F ;

Armaroli, N ;

Ouali, L ;

Krasnikov, V ;

Hadziioannou, G .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (31) :7467-7479

[7] The rise of graphene [J].

Geim, A. K. ;

Novoselov, K. S. .

NATURE MATERIALS, 2007, 6 (03) :183-191

[8] Carbon nanostructures in portable fuel cells: Single-walled carbon nanotube electrodes for methanol oxidation and oxygen reduction [J].

Girishkumar, G ;

Vinodgopal, K ;

Kamat, PV .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (52) :19960-19966

[9] Emerging Methods for Producing Monodisperse Graphene Dispersions [J].

Green, Alexander A. ;

Hersam, Mark C. .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2010, 1 (02) :544-549

[10] PREPARATION OF GRAPHITIC OXIDE [J].

HUMMERS, WS ;

OFFEMAN, RE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1958, 80 (06) :1339-1339

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