Solvothermal synthesis of three-dimensional CeO2 micropillows and their photocatalytic property

被引：2

作者：

Arul, Narayanasamy Sabari ^{[1
,2
]}

Mangalaraj, Devanesan ^{[2
]}

Han, Jeong In ^{[1
]}

机构：

[1] Dongguk Univ Seoul, Dept Chem & Biochem Engn, Seoul 100715, South Korea

[2] Bharathiar Univ, Dept Nanosci & Technol, Coimbatore 641046, Tamil Nadu, India

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2014年 / 8卷 / 07期

关键词：

CeO2; micropillows; solvothermal synthesis; surface area; photocatalysts; optical absorption; CERIA; MICROSPHERES; DEGRADATION; NANOPARTICLES; ORGANIZATION; ADSORPTION; SURFACE;

D O I：

10.1002/pssr.201409200

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three-dimensional (3D) CeO2 micropillows were synthesized by using solvothermal method. The pH of the precursor solution was adjusted to 10 by adding ammonium hydroxide. The structural, morphology and compositional characteristics of CeO2 micropillows were investigated by XRD, SEM, TEM and EDAX. XRD analysis showed the formation of CeO2 micropillows. BET analysis showed high specific surface area for the synthesized CeO2 micropillows (191 m(2) g(-1)). Optical absorption of CeO2 micropillows showed enhanced photoabsorption ability with the estimated band gap energy of 2.8 eV. The photodegradation rate of the CeO2 micropillows was found to be 87% and obeys pseudo-first-order equation. The photocatalytic results indicated that the CeO2 micropillows exhibit enhanced photocatalytic property towards azo dye acid orange 7 (AO7) under UV-Vis light illumination.(C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：643 / 647

页数：5

共 29 条

[1] Adsorption of gases in multimolecular layers [J].

Brunauer, S ;

Emmett, PH ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :309-319

[2] Single-crystal dendritic micro-pines of magnetic α-Fe2O3:: Large-scale synthesis, formation mechanism, and properties [J].

Cao, MH ;

Liu, TF ;

Gao, S ;

Sun, GB ;

Wu, XL ;

Hu, CW ;

Wang, ZL .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (27) :4197-4201

[3] Synthesis and room-temperature ferromagnetism of CeO2 nanocrystals with nonmagnetic Ca2+ doping [J].

Chen, Xiaobo ;

Li, Guangshe ;

Su, Yiguo ;

Qiu, Xiaoqing ;

Li, Liping ;

Zou, Zhigang .

NANOTECHNOLOGY, 2009, 20 (11)

[4] Hierarchically mesostructured doped CeO2 with potential for solar-cell use [J].

Corma, A ;

Atienzar, P ;

García, H ;

Chane-Ching, JY .

NATURE MATERIALS, 2004, 3 (06) :394-397

[5] Synthesis of novel CeO2 microspheres with enhanced solar light photocatalyic properties [J].

Feng, Ting ;

Wang, Xindong ;

Feng, Gensheng .

MATERIALS LETTERS, 2013, 100 :36-39

[6] Biodegradation of textile azo dyes by a facultative Staphylococcus arlettae strain VN-11 using a sequential microaerophilic/aerobic process [J].

Franciscon, Elisangela ;

Zille, Andrea ;

Dias Guirnaro, Fabio ;

Ragagnin de Menezes, Cristiano ;

Durrant, Regina Lucia ;

Cavaco-Paulo, Artur .

INTERNATIONAL BIODETERIORATION & BIODEGRADATION, 2009, 63 (03) :280-288

[7] Crystalline evolution of various CeO2 morphology via a solvothermal method [J].

Fu, Cong ;

Li, Ruixing ;

Tang, Qing ;

Li, Chengqiang ;

Yin, Shu ;

Sato, Tsugio .

RESEARCH ON CHEMICAL INTERMEDIATES, 2011, 37 (2-5) :319-327

[8] Active nonmetallic Au and Pt species on ceria-based water-gas shift catalysts [J].

Fu, Q ;

Saltsburg, H ;

Flytzani-Stephanopoulos, M .

SCIENCE, 2003, 301 (5635) :935-938

[9]

Ji P, 2011, MAT RES B, V46, P1092

[10] CeO2 mediated photocatalytic degradation studies of CI acid orange 7 [J].

Ji, Pengfei ;

Tian, Baozhu ;

Chen, Feng ;

Zhang, Jinlong .

ENVIRONMENTAL TECHNOLOGY, 2012, 33 (04) :467-472

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