Facile preparation of Ce-doped TiO2/diatomite granular composite with enhanced photocatalytic activity

被引：31

作者：

Chen, Yan ^{[1
]}

Wu, Qiong ^{[1
]}

Zhou, Chao ^{[1
]}

Jin, Qiutong ^{[1
]}

机构：

[1] Liaoning Univ, Coll Environm, Shenyang 110036, Liaoning, Peoples R China

来源：

ADVANCED POWDER TECHNOLOGY | 2018年 / 29卷 / 01期

关键词：

Ce-doped; Hybrid; Diatomite; Mechanism; VISIBLE-LIGHT; TIO2; DEGRADATION; NITROGEN; PHARMACEUTICALS; NANOPARTICLES; ADSORPTION; OXIDATION; TITANIA; CERIUM;

D O I：

10.1016/j.apt.2017.10.017

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Granule-shaped Ce-doped TiO2/diatomite (GCTD) hybrid was prepared via sol-gel method. The physicochemical properties of this hybrid were characterized by various analytical methods. As carrier, diatomite was conducive to the dispersion of TiO2 nanoparticles, hindering their agglomeration process. Compared to TiO2, GCTD showed visible-light-driven photoactivity, which was evaluated by the degradation of oxytetracycline (OTC) and disinfection of three bacteria (Escherichia coli, Staphylococcus aureus and Klebsiella pneumonia) under visible light. The porous diatomite enhanced the photoactivity of TiO2 via the adsorption towards target pollutants. The reusability experiment was conducted for 5 times, and the results showed that GCTD exhibited good photo-stability and reusability. (C) 2017 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

引用

页码：106 / 116

页数：11

共 28 条

[1] Kinetic and mechanistic study of photocatalytic degradation of flame retardant Tris (1-chloro-2-propyl) phosphate (TCPP) [J].

Antonopoulou, M. ;

Karagianni, P. ;

Konstantinou, I. K. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2016, 192 :152-160

[2] Fabrication of magnetically recyclable Ce/N co-doped TiO2/NiFe2O4/diatomite ternary hybrid: Improved photocatalytic efficiency under visible light irradiation [J].

Chen, Yan ;

Liu, Kuiren .

JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 697 :161-173

[3] Preparation and characterization of nitrogen-doped TiO2/diatomite integrated photocatalytic pellet for the adsorption-degradation of tetracycline hydrochloride using visible light [J].

Chen, Yan ;

Liu, Kuiren .

CHEMICAL ENGINEERING JOURNAL, 2016, 302 :682-696

[4] Dual degradation of gaseous 1,2-dichlorobenzene and PCDD/Fs using Ce doped VxOy/TiO2 immobilized on cordierite [J].

Chen, Yan ;

Wu, Qiong ;

Liu, Kuiren .

CHEMOSPHERE, 2016, 154 :472-481

[5] Synthesis and characterisation of novel titania impregnated kaolinite nano-photocatalyst [J].

Chong, Meng Nan ;

Vimonses, Vipasiri ;

Lei, Shaomin ;

Jin, Bo ;

Chow, Chris ;

Saint, Chris .

MICROPOROUS AND MESOPOROUS MATERIALS, 2009, 117 (1-2) :233-242

[6] Enhancing Visible Light Photo-oxidation of Water with TiO2 Nanowire Arrays via Cotreatment with H2 and NH3: Synergistic Effects between Ti3+ and N [J].

Hoang, Son ;

Berglund, Sean P. ;

Hahn, Nathan T. ;

Bard, Allen J. ;

Mullins, C. Buddie .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (08) :3659-3662

[7] Immobilization of TiO2 on perlite granules for photocatalytic degradation of phenol [J].

Hosseini, S. N. ;

Borghei, S. M. ;

Vossoughi, M. ;

Taghavinia, N. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 74 (1-2) :53-62

[8] Silver-supporting Diatomite Preparation and Antibacterial Performance Test [J].

Hu, Fene ;

Wang, Zhijuan ;

Li, Junli .

FRONTIER OF NANOSCIENCE AND TECHNOLOGY, 2011, 694 :742-745

[9] Photo-catalytic preparation of silver-coated TiO2 particles for antibacterial applications [J].

Keleher, J ;

Bashant, J ;

Heldt, N ;

Johnson, L ;

Li, YZ .

WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY, 2002, 18 (02) :133-139

[10] Human pharmaceuticals in the aquatic environment: A challenge to green chemistry [J].

Khetan, Sushil K. ;

Collins, Terrence J. .

CHEMICAL REVIEWS, 2007, 107 (06) :2319-2364

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