Hydrogen photoproduction under visible irradiation of Au-TiO2/activated carbon

被引：36

作者：

Matos, Juan ^{[1
,2
]}

Marino, Tiziana ^{[1
]}

Molinari, Raffaele ^{[3
]}

Garcia, Hermenegildo ^{[1
]}

机构：

[1] Univ Politecn Valencia, Inst Tecnol Quim, UPV CSIC, Valencia 46022, Spain

[2] Venezuelan Inst Sci Res, Caracas, Venezuela

[3] Univ Calabria, Dept Chem Engn & Mat, I-87036 Arcavacata Di Rende, CS, Italy

来源：

APPLIED CATALYSIS A-GENERAL | 2012年 / 417卷

关键词：

H-2; photoproduction; TiO2; Au-based catalysts; Activated carbon; PHOTOCATALYTIC ACTIVITY; ACTIVATED CARBONS; DEGRADATION; TIO2; TITANIA; LIGHT; PHOTODEGRADATION; PHENOL; 4-CHLOROPHENOL; SURFACE;

D O I：

10.1016/j.apcata.2011.12.047

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：

The photoproduction of hydrogen has been performed under visible light irradiation of Au-TiO2/activated carbon (AC) materials prepared by different activation methods. Results were compared against those obtained under ultraviolet irradiation. Characterization of TiO2, AC and Au-TiO2/AC was performed by adsorption-desorption N-2 isotherms, surface pH (pH(PZC)), infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectronic spectroscopy (XPS), diffuse reflectance UV-vis spectroscopy (DR/UV-vis), and transmission electron microscopy (TEM). The present results showed that functional groups on the carbon surface are responsible to enhance 2.6 times the photocatalytic activity of Au nanoparticles deposited on TiO2. Characterization suggests that carboxylate anions detected on surface of some AC interact with metallic center at TiO2 and this surface interaction would be responsible of the enhancement in the photoactivity. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：263 / 272

页数：10

共 37 条

[1]

Andrew P., 1983, Carbon, V21, P53

[2] Characterization and photocatalytic activity of Au/TiO2 thin films for azo-dye degradation [J].

Arabatzis, IM ;

Stergiopoulos, T ;

Andreeva, D ;

Kitova, S ;

Neophytides, SG ;

Falaras, P .

JOURNAL OF CATALYSIS, 2003, 220 (01) :127-135

[3] TiO2 activation by using activated carbon as a support -: Part II.: Photoreactivity and FTIR study [J].

Araña, J ;

Doña-Rodríguez, JM ;

Rendón, ET ;

Cabo, CGI ;

González-Díaz, O ;

Herrera-Melián, JA ;

Pérez-Peña, J ;

Colón, G ;

Navío, JA .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2003, 44 (02) :153-160

[4] STRUCTURAL INVESTIGATIONS OF THE GRAPHITE-INTERCALATION COMPOUNDS OF THE DICHLORIDES OF THE II-B-ELEMENTS (ZN, CD, HG) [J].

BEHRENS, P ;

BEUTHIEN, H ;

EICKHOFF, HP ;

METZ, W ;

NIEMANN, W .

SYNTHETIC METALS, 1988, 23 (1-4) :95-100

[5] Adsorption of gases in multimolecular layers [J].

Brunauer, S ;

Emmett, PH ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :309-319

[6] Nanocrystalline CeO2 increases the activity of an for CO oxidation by two orders of magnitude [J].

Carrettin, S ;

Concepción, P ;

Corma, A ;

Nieto, JML ;

Puntes, VF .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (19) :2538-2540

[7] Effect of TiO2 acidic pre-treatment on the photocatalytic properties for phenol degradation [J].

Colón, G ;

Sánchez-España, JM ;

Hidalgo, MC ;

Navío, JA .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2006, 179 (1-2) :20-27

[8] Influence of L-type activated carbons on photocatalytic activity of TiO2 in 4-chlorophenol photodegradation [J].

Cordero, Tulynan ;

Duchamp, Christian ;

Chovelon, Jean-Marc ;

Ferronato, Corinne ;

Matos, Juan .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2007, 191 (2-3) :122-131

[9] Surface nano-aggregation and photocatalytic activity of TiO2 on H-type activated carbons [J].

Cordero, Tulynan ;

Chovelon, Jean-Marc ;

Duchamp, Christian ;

Ferronato, Corinne ;

Matos, Juan .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 73 (3-4) :227-235

[10] Influence of Excitation Wavelength (UV or Visible Light) on the Photocatalytic Activity of Titania Containing Gold Nanoparticles for the Generation of Hydrogen or Oxygen from Water [J].

Gomes Silva, Claudia ;

Juarez, Raquel ;

Marino, Tiziana ;

Molinari, Raffaele ;

Garcia, Hermenegildo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (03) :595-602

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