Synthesis of high surface area, mesoporous MgO nanosheets with excellent adsorption capability for Ni(II) via a distillation treating

被引：62

作者：

Feng, Jing ^{[1
]}

Zou, Linyi ^{[1
]}

Wang, Yuting ^{[1
]}

Li, Bowen ^{[1
]}

He, Xiaofeng ^{[1
]}

Fan, Zhuangjun ^{[1
]}

Ren, Yueming ^{[1
]}

Lv, Yanzhuo ^{[1
]}

Zhang, Milin ^{[1
]}

Chen, Dan ^{[1
]}

机构：

[1] Harbin Engn Univ, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2015年 / 438卷

基金：

中国国家自然科学基金;

关键词：

MgO nanosheets; Mesoporous; Distillation process; High surface area; Ni(II); Adsorption; MAGNESIUM-OXIDE NANOCRYSTALS; ACTIVATED CARBON; CHEMICAL-STATE; METAL; NANOSTRUCTURES; PERFORMANCE; POLLUTANTS; REMOVAL; WATER; SIZE;

D O I：

10.1016/j.jcis.2014.10.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hexagonal mesoporous MgO nanosheets with a side length of 250 nm and specific surface area of 181.692 m(2)/g were fabricated by a three-step process. Firstly, MgO powders were obtained by sintered Mg-5(OH)(2)(CO3)(4).4H(2)O, which was synthesized by a wet precipitation process using ammonium hydrogen carbonate as precipitants. Secondly, the above-MgO were distilled 2 h in a three-necked bottle with condenser device. Lastly, we annealed the distilled-MgO at 500-800 degrees C to form mesoporous MgO nanosheets. We found the pore size distribution and the thicknesses of nanosheets were determined by the distillation process in step 2 and annealed temperature in step 3. By optimizing the experimental parameters, the mesoporous dis-MgO annealed at 600 degrees C displayed uniform hexagonal structure with the largest pore volume (0.875 cm(3)/g) and highest BET surface area (181.692 m(2)/g), as well as the maximum adsorption capability of 1684.25 mg/g for Ni(II). (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：259 / 267

页数：9

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