Nanostructured TiO2/Polypyrrole for Visible Light Photocatalysis

被引：120

作者：

Dimitrijevic, Nada M. ^{[1
,2
]}

Tepavcevic, Sanja ^{[2
]}

Liu, Yuzi ^{[2
]}

Rajh, Tijana ^{[2
]}

Silver, Sunshine C. ^{[1
]}

Tiede, David M. ^{[1
]}

机构：

[1] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

[2] Argonne Natl Lab, Nanosci & Technol Div, Argonne, IL 60439 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2013年 / 117卷 / 30期

关键词：

TIO2; NANOPARTICLES; DEGRADATION; POLYPYRROLE; OLIGOMERS; DYNAMICS; CHARGES; PHENOL; CARBON; SIZE;

D O I：

10.1021/jp405562b

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：

Stable TiO2/polypyrrole nanocomposites have been synthesized by a simple one-step hydrothermal method. The nanocomposites are capable of efficient visible-light photocatalysis driven by their morphology that utilizes a high concentration of 4.5 nm TiO2 nanoparticles electronically coupled to 200-300 nm polypyrrole granules. The polypyrrole acts as visible-light photosensitizer, and the photoactivity of nanocomposite arises from the electron transfer from excited polypyrrole to TiO2 nanopartides and further across nanocomposite interface. The visible-light photocatalysis is demonstrated by methylene blue degradation and by the production of H-2 from water with efficiency of 1 mmol H-2 g(catalyst)(-1) h(-1)wt %(Pt)(-1).

引用

页码：15540 / 15544

页数：5

共 27 条

[1] Hole scavenger redox potentials determine quantum efficiency and stability of Pt-decorated CdS nanorods for photocatalytic hydrogen generation [J].

Berr, Maximilian J. ;

Wagner, Peter ;

Fischbach, Stefan ;

Vaneski, Aleksandar ;

Schneider, Julian ;

Susha, Andrei S. ;

Rogach, Andrey L. ;

Jaeckel, Frank ;

Feldmann, Jochen .

APPLIED PHYSICS LETTERS, 2012, 100 (22)

[2] ELECTROOXIDATION OF AROMATIC OLIGOMERS AND CONDUCTING POLYMERS [J].

DIAZ, AF ;

CROWLEY, J ;

BARGON, J ;

GARDINI, GP ;

TORRANCE, JB .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1981, 121 (APR) :355-361

[3] Effect of size and shape of nanocrystalline TiO2 on photogenerated charges.: An EPR study [J].

Dimitrijevic, Nada M. ;

Saponjic, Zoran V. ;

Rabatic, Bryan M. ;

Poluektov, Oleg G. ;

Rajh, Tijana .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (40) :14597-14601

[4] Dynamics of Localized Charges in Dopamine-Modified TiO2 and their Effect on the Formation of Reactive Oxygen Species [J].

Dimitrijevic, Nada M. ;

Rozhkova, Elena ;

Rajh, Tijana .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (08) :2893-2899

[5]

DUONGHONG D, 1982, J AM CHEM SOC, V104, P2977

[6] Towards TiO2-conducting polymer hybrid materials for lithium ion batteries [J].

Dziewonski, Pawel Marek ;

Grzeszczuk, Maria .

ELECTROCHIMICA ACTA, 2010, 55 (09) :3336-3347

[7] COLLOIDAL TIO2 CATALYZED PHOTO AND RADIATION CHEMICAL PROCESSES IN AQUEOUS-SOLUTION [J].

HENGLEIN, A .

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1982, 86 (03) :241-246

[8] Photocatalytic degradation pathway of methylene blue in water [J].

Houas, A ;

Lachheb, H ;

Ksibi, M ;

Elaloui, E ;

Guillard, C ;

Herrmann, JM .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 31 (02) :145-157

[9] Manipulation of Charge Transfer Across Semiconductor Interface. A Criterion That Cannot Be Ignored in Photocatalyst Design [J].

Kamat, Prashant V. .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2012, 3 (05) :663-672

[10] Review on Modified TiO2 Photocatalysis under UV/Visible Light: Selected Results and Related Mechanisms on Interfacial Charge Carrier Transfer Dynamics [J].

Kumar, S. Girish ;

Devi, L. Gomathi .

JOURNAL OF PHYSICAL CHEMISTRY A, 2011, 115 (46) :13211-13241

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