Hydrothermal synthesis and photocatalytic properties of bismuth molybdate materials

被引：146

作者：

Li, HongHua ^{[1
]}

Li, KunWei ^{[1
]}

Wang, Hao ^{[1
]}

机构：

[1] Beijing Univ Sci & Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 116卷 / 01期

关键词：

Oxides; Chemical synthesis; Powder diffraction; Raman spectroscopy and scattering; SELECTIVE OXIDATION; CATALYTIC-OXIDATION; CRYSTAL-STRUCTURE; IN-SITU; BI2MOO6; CATALYST; GAMMA-PHASE; OXIDE; CONDUCTIVITY; PROPYLENE; CRYSTALLIZATION;

D O I：

10.1016/j.matchemphys.2009.02.058

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The three kinds of well-known bismuth molybdates alpha-Bi2Mo3O12, beta-Bi2Mo2O9, and gamma-Bi2MoO6 have been prepared employing mild hydrothermal methods. By tuning the Bi/Mo ratio and pH values, controlling formation of bismuth molybdates can be achieved. Low pH and high concentration of molybdenum lead to the formation of alpha-Bi2Mo3O12. High pH and high concentration of bismuth lead to the formation of gamma-Bi2MoO6. The pure form of the beta-phase can be prepared by calcining the hydrothermal product at 560 degrees C. Photophysical and photocatalytic studies show that Aurivillius structure gamma-Bi2MoO6 shows an intense absorption band in the visible light region and better photocatalytic activity than alpha-Bi2Mo3O12 and beta-Bi2Mo2O9 under visible light irradiation. The factors that result in different photocatalytic activities for three kinds of photocatalysts are discussed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：134 / 142

页数：9

共 50 条

[1] SCIENCE AT THE ATOMIC SCALE [J].

BALL, P ;

GARWIN, L .

NATURE, 1992, 355 (6363) :761-766

[2] CATALYTIC OXIDATION OF 1-BUTENE OVER BISMUTH MOLYBDATE CATALYSTS .4. DEPENDENCE OF ACTIVITY ON STRUCTURES OF CATALYSTS [J].

BATIST, PA ;

DERKINDE.AH ;

LEEUWENBURGH, Y ;

METZ, FAM ;

SCHUIT, GCA .

JOURNAL OF CATALYSIS, 1968, 12 (01) :45-+

[3] In situ study of the formation of crystalline bismuth molybdate materials under hydrothermal conditions [J].

Beale, AM ;

Sankar, G .

CHEMISTRY OF MATERIALS, 2003, 15 (01) :146-153

[4] Watching the crystallisation of complex oxides by in situ X-ray techniques [J].

Beale, Andrew M. ;

Reilly, Lee M. ;

Sankar, Gopinathan .

APPLIED CATALYSIS A-GENERAL, 2007, 325 (02) :290-295

[5] Simple solvothermal routes to synthesize nanocrystalline Bi2MoO6 photocatalysts with different morphologies [J].

Bi, Jinhong ;

Wu, Ling ;

Li, He ;

Li, Zhaohui ;

Wang, Xuxu ;

Fu, Xianzhi .

ACTA MATERIALIA, 2007, 55 (14) :4699-4705

[6] OXIDATION AND AMMOXIDATION OF PROPYLENE OVER BISMUTH MOLYBDATE CATALYST [J].

CALLAHAN, JL ;

GRASSELLI, RK ;

MILBERGER, EC ;

STRECKER, HA .

INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1970, 9 (02) :134-+

[7] SYNERGY EFFECTS IN THE CATALYTIC PROPERTIES OF BISMUTH MOLYBDATES [J].

CARSON, D ;

COUDURIER, G ;

FORISSIER, M ;

VEDRINE, JC ;

LAARIF, A ;

THEOBALD, F .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1983, 79 :1921-1929

[8] CRYSTAL-STRUCTURE OF BI2M02O9 - A SELECTIVE OXIDATION CATALYST [J].

CHEN, HY ;

SLEIGHT, AW .

JOURNAL OF SOLID STATE CHEMISTRY, 1986, 63 (01) :70-75

[9] PHASE-DIAGRAM OF THE SYSTEM BI2O3-MO03 [J].

EGASHIRA, M ;

MATSUO, K ;

KAGAWA, S ;

SEIYAMA, T .

JOURNAL OF CATALYSIS, 1979, 58 (03) :409-418

[10] IDENTIFICATION OF ACTIVE OXIDE IONS IN A BISMUTH MOLYBDATE SELECTIVE OXIDATION CATALYST [J].

GLAESER, LC ;

BRAZDIL, JF ;

HAZLE, MA ;

MEHICIC, M ;

GRASSELLI, RK .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1985, 81 :2903-2912

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