The Effect of Alkaline Earth Metal Ion Dopants on Photocatalytic Water Splitting by NaTaO3 Powder

被引：96

作者：

Iwase, Akihide ^{[1
]}

Kato, Hideki ^{[1
,2
]}

Kudo, Akihiko ^{[1
]}

机构：

[1] Tokyo Univ Sci, Dept Appl Chem, Shinjyuku Ku, Tokyo 1628601, Japan

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

CHEMSUSCHEM | 2009年 / 2卷 / 09期

基金：

日本学术振兴会;

关键词：

doping; nanostructures; photocatalysis; surface chemistry; water splitting; O-2; H-2;

D O I：

10.1002/cssc.200900160

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Alkaline earth metal ions (Ca, Sr, and Ba) are doped into a NaTaO3 photocatalyst, yielding fine particles and surface structures with nanometer-scale "steps." The formation of the surface nanostep structure depends on the amount of doped Sr and Ba. The photocatalytic water splitting over NaTaO3 is enhanced: NaTaO3 doped with 0.5 and 1.0 mol% of Sr shows high activities for photocatalytic water splitting without loading of a co-catalyst, and the photocatalytic activity is further improved by loading with a NiO co-catalyst.

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收藏

页码：873 / 877

页数：5

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共 10 条

[1] Photocatalytic water splitting by RuO2-loaded metal oxides and nitrides with d0- and d10-related electronic configurations [J].

Inoue, Yasunobu .

ENERGY & ENVIRONMENTAL SCIENCE, 2009, 2 (04) :364-386

[2] Formation of surface nano-step structures and improvement of photocatalytic activities of NaTaO3 by doping of alkaline earth metal ions [J].

Iwase, A ;

Kato, H ;

Okutomi, H ;

Kudo, A .

CHEMISTRY LETTERS, 2004, 33 (10) :1260-1261

[3] Highly efficient water splitting into H2 and O2 over lanthanum-doped NaTaO3 photocatalysts with high crystallinity and surface nanostructure [J].

Kato, H ;

Asakura, K ;

Kudo, A .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (10) :3082-3089

[4] NICKEL-LOADED K4NB6O17 PHOTOCATALYST IN THE DECOMPOSITION OF H2O INTO H-2 AND O-2 - STRUCTURE AND REACTION-MECHANISM [J].

KUDO, A ;

SAYAMA, K ;

TANAKA, A ;

ASAKURA, K ;

DOMEN, K ;

MARUYA, K ;

ONISHI, T .

JOURNAL OF CATALYSIS, 1989, 120 (02) :337-352

[5] Heterogeneous photocatalyst materials for water splitting [J].

Kudo, Akihiko ;

Miseki, Yugo .

CHEMICAL SOCIETY REVIEWS, 2009, 38 (01) :253-278

[6] Highly efficient water splitting over K3Ta3B2O12 photocatalyst without loading cocatalyst [J].

Kurihara, T ;

Okutomi, H ;

Miseki, Y ;

Kato, H ;

Kudo, A .

CHEMISTRY LETTERS, 2006, 35 (03) :274-275

[7] Time-Resolved Infrared Absorption Study of NaTaO3 Photocatalysts Doped with Alkali Earth Metals [J].

Maruyama, Motoji ;

Iwase, Akihide ;

Kato, Hideki ;

Kudo, Akihiko ;

Onishi, Hiroshi .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (31) :13918-13923

[8] Photocatalytic water splitting on nickel intercalated A(4)Ta(x)Nb(6-x)O(17) (A=K, Rb) [J].

Sayama, K ;

Arakawa, H ;

Domen, K .

CATALYSIS TODAY, 1996, 28 (1-2) :175-182

[9] REVISED EFFECTIVE IONIC-RADII AND SYSTEMATIC STUDIES OF INTERATOMIC DISTANCES IN HALIDES AND CHALCOGENIDES [J].

SHANNON, RD .

ACTA CRYSTALLOGRAPHICA SECTION A, 1976, 32 (SEP1) :751-767

[10] A highly active photocatalyst for overall water splitting with a hydrated layered perovskite structure [J].

Takata, T ;

Shinohara, K ;

Tanaka, A ;

Hara, M ;

Kondo, JN ;

Domen, K .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1997, 106 (1-3) :45-49