Hierarchical mesoporous MoO2 hollow microspheres: Synthesis, mechanism and application in removing Cr (VI) from wastewater

被引：13

作者：

Hu, Hanmei ^{[1
,2
]}

Xu, Junchan ^{[1
]}

Deng, Chonghai ^{[3
]}

Ge, Xinqing ^{[1
]}

机构：

[1] Anhui Jianzhu Univ, Sch Mat & Chem Engn, Hefei 230022, Peoples R China

[2] Anhui Jianzhu Univ, Key Lab Funct Mol Design & Interface Proc, Hefei 230022, Peoples R China

[3] Hefei Univ, Dept Chem & Mat Engn, Hefei 230022, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2014年 / 51卷

基金：

中国国家自然科学基金;

关键词：

Oxides; Chemical synthesis; Crystal growth; Microstructure; SHAPE-CONTROLLED SYNTHESIS; TEMPLATE-FREE SYNTHESIS; ANODE MATERIAL; MOLYBDENUM; SPHERES; OXIDE;

D O I：

10.1016/j.materresbull.2013.12.056

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hierarchical MoO2 hollow microspheres have been successfully fabricated on a large scale through a convenient hydrothermal reductive process. MoO2 hollow microspheres are composed of subunits (nanospheres or nanoplates), which are actually self-aggregated by hundreds of tiny primary nanoparticles. BET nitrogen adsorption reveals that the MoO2 hollow microspheres have mesoporous shell with pore size of 5-20 nm. Reaction parameters, such as mole ratio of reactant, reaction temperature and time, were discussed in detail. Center-hollowing evolution process induced by Ostwald ripening was proposed to explain the formation mechanism of hierarchical MoO2 hollow microspheres. The adsorption ability of MoO2 hollow microspheres was evaluated by adsorbing Cr (VI) at room temperature. The experimental results indicated that MoO2 absorbent displayed higher adsorption capacity compared to activated carbon, which would be potential application in wastewater treatment. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：402 / 410

页数：9

共 38 条

[1]

Caruso F, 2001, ADV MATER, V13, P740, DOI 10.1002/1521-4095(200105)13:10<740::AID-ADMA740>3.0.CO

[2]

2-6

[3] Targeted Synthesis of Silicomolybdic Acid (Keggin Acid) inside Mesoporous Silica Hollow Spheres for Friedel-Crafts Alkylation [J].

Dou, Jian ;

Zeng, Hua Chun .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (39) :16235-16246

[4] Activity and stability studies of MoO2 catalyst for the partial oxidation of gasoline [J].

Flores, Oscar G. Marin ;

Ha, Su .

APPLIED CATALYSIS A-GENERAL, 2009, 352 (1-2) :124-132

[5] Nanocages derived from shell cross-linked micelle templates [J].

Huang, HY ;

Remsen, EE ;

Kowalewski, T ;

Wooley, KL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (15) :3805-3806

[6] Preparation of macroporous SnO2 films using PMMA microspheres and their sensing properties to NOx and H2 [J].

Hyodo, T ;

Sasahara, K ;

Shimizu, Y ;

Egashira, M .

SENSORS AND ACTUATORS B-CHEMICAL, 2005, 106 (02) :580-590

[7] Template-free synthesis of hollow core-shell MoO2 microspheres with high lithium-ion storage capacity [J].

Lei, Yizhu ;

Hu, Juncheng ;

Liu, Haowen ;

Li, Jinlin .

MATERIALS LETTERS, 2012, 68 :82-85

[8] Template-free synthesis of uniform CdS hollow nanospheres and their photocatalytic activities [J].

Lin, Guofeng ;

Zheng, Jianwei ;

Xu, Rong .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (19) :7363-7370

[9] Mesoscale organization of CuO nanoribbons: Formation of "dandelions" [J].

Liu, B ;

Zeng, HC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (26) :8124-8125

[10] A new metastable phase of crystallized MoO3•0.3H2O nanobelts [J].

Luo, Haiyan ;

Wei, Mingdeng ;

Wei, Kemei .

MATERIALS CHEMISTRY AND PHYSICS, 2009, 113 (01) :85-90

← 1 2 3 4 →