Preparation and properties of a magnetic-nanometer TiO2/Fe3O4 composite photocatalyst

被引：0

作者：

Chen, JY ^{[1
]}

Peng, TZ

机构：

[1] Zhejiang Univ, Dept Chem, Xixi Campus, Hangzhou 310028, Peoples R China

[2] Zhejiang Univ Technol, Sch Vocat & Tech, Hangzhou 310014, Peoples R China

来源：

ACTA CHIMICA SINICA | 2004年 / 62卷 / 20期

关键词：

nanometer-TiO2; magnetic Fe3O4; composite material; photo-catalysis;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel magnetic-nanometer titanium dioxide/ferriferous oxide (TiO2/Fe3O4) composite photocatalyst was prepared. The photoactive TiO2 was deposited onto the surface of magnetic Fe3O4 cores using a sol-gel coating technique. The morphological structure of the photocatalyst particles was characterized by XRD and TEM analysis. The nanometer-TiO2 disperses uniformly and enwraps the Fe3O4 magnetic cores to form composite particles with a size of 30 similar to 50 nm. The photocatalyst shows properties of absorptive wavelengh red-shift and absorbance increase. The new composite photocatalyst is a highly effective decoloring agent in wastewater with a dyestuff of active bright red, which can be recovered and reused.

引用

页码：2093 / 2097

页数：5

共 23 条

[1] PHOTODEGRADATION OF PENTACHLOROPHENOL CATALYZED BY SEMICONDUCTOR PARTICLES
BARBENI, M
PRAMAURO, E
PELIZZETTI, E
BORGARELLO, E
SERPONE, N
[J]. CHEMOSPHERE, 1985, 14 (02) : 195 - 208
[2] Implications of heat treatment on the properties of a magnetic iron oxide-titanium dioxide photocatalyst
Beydoun, D
Amal, R
[J]. MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2002, 94 (01): : 71 - 81
[3] DEN C, 1992, J MOL CATAL, V6, P15
[4] Fujishima A., 2000, J PHOTOCH PHOTOBIO C, V1, P1, DOI DOI 10.1016/S1389-5567(00)00002-2
[5] Preparation and characterization of a magnetically separated photocatalyst and its catalytic properties
Gao, Y
Chen, BH
Li, HL
Ma, YX
[J]. MATERIALS CHEMISTRY AND PHYSICS, 2003, 80 (01) : 348 - 355
[6] PHOTOCATALYTIC ACTIVITY OF ULTRA-FINE RUTILE IN METHANOL WATER SOLUTION AND DEPENDENCE OF ACTIVITY ON PARTICLE-SIZE
HARADA, H
UEDA, T
[J]. CHEMICAL PHYSICS LETTERS, 1984, 106 (03) : 229 - 231
[7] ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS
HOFFMANN, MR
MARTIN, ST
CHOI, WY
BAHNEMANN, DW
[J]. CHEMICAL REVIEWS, 1995, 95 (01) : 69 - 96
[8] Preparation and characterization of FexOy-TiO2 via sonochemical synthesis
Huang, WP
Tang, XH
Felner, I
Koltypin, Y
Gedanken, A
[J]. MATERIALS RESEARCH BULLETIN, 2002, 37 (10) : 1721 - 1735
[9] JIN HF, 2001, APPL CHEM, V18, P636
[10] KEIICHI T, 1991, CHEM PHYS LETT, V187, P73

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