Mesoporous tantalum oxide. 1. Characterization and photocatalytic activity for the overall water decomposition

被引：213

作者：

Takahara, Y ^{[1
]}

Kondo, JN ^{[1
]}

Takata, T ^{[1
]}

Lu, DL ^{[1
]}

Domen, K ^{[1
]}

机构：

[1] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

CHEMISTRY OF MATERIALS | 2001年 / 13卷 / 04期

关键词：

D O I：

10.1021/cm000572i

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：

Mesoporous Ta2O5 was synthesized by the ligand-assisted templating method, and its stability for use as a photocatalyst was studied by X-ray diffraction, Ne adsorption isotherm analysis, and transmission electron microscopy. The photocatalytic activity for the overall water decomposition on the mesoporous Ta2O5; was improved by NiO loading and pretreatment. The mesoporous structure was found to be maintained to some extent after loading of NiO (H-2 evolution site) and pretreatment for activation at a temperature as high as 673 K. Although the wall of mesoporous Ta2O5 was amorphous, the photocatalytic activity was higher than that of the crystallized Ta2O5.

引用

页码：1194 / 1199

页数：6

共 18 条

[1] Synthesis and characterization of hexagonally packed mesoporous tantalum oxide molecular sieves [J].

Antonelli, DM ;

Ying, JY .

CHEMISTRY OF MATERIALS, 1996, 8 (04) :874-881

[2] ION EXCHANGEABLE LAYERED NIOBATES AS A NOBLE SERIES OF PHOTOCATALYSTS [J].

DOMEN, K ;

EBINA, Y ;

KONDO, J .

RESEARCH ON CHEMICAL INTERMEDIATES, 1994, 20 (09) :895-908

[3] Photo- and mechano-catalytic overall water splitting reactions to form hydrogen and oxygen on heterogeneous catalysts [J].

Domen, K ;

Kondo, JN ;

Hara, M ;

Takata, T .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 2000, 73 (06) :1307-1331

[4] Effects of acceptor doping to KTaO3 on photocatalytic decomposition of pure H2O [J].

Ishihara, T ;

Nishiguchi, H ;

Fukamachi, K ;

Takita, Y .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (01) :1-3

[5] Highly efficient decomposition of pure water into H2 and O2 over NaTaO3 photocatalysts [J].

Kato, H ;

Kudo, A .

CATALYSIS LETTERS, 1999, 58 (2-3) :153-155

[6]

KATO H, 1999, CHEM LETT, P1027

[7] IR characterization of mesoporous tantalum oxide, Ta-TMS-1 [J].

Kondo, JN ;

Lu, LH ;

Takahara, Y ;

Maruya, K ;

Domen, K ;

Igarashi, N ;

Tatsumi, T .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 2000, 73 (05) :1123-1129

[8] Water splitting into H2 and O2 on new Sr2M2O7 (M = Nb and Ta) photocatalysts with layered perovskite structures:: Factors affecting the photocatalytic activity [J].

Kudo, A ;

Kato, H ;

Nakagawa, S .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (03) :571-575

[9] Photocatalytic decomposition of water into H-2 and O-2 over novel photocatalyst K3Ta3Si2O13 with pillared structure consisting of three TaO6 chains [J].

Kudo, A ;

Kato, H .

CHEMISTRY LETTERS, 1997, (09) :867-868

[10]

Nugent W.A., 1988, METAL LIGAND MULTIPL

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