A facile fabrication of sepiolite mineral nanofibers with excellent adsorption performance for Cd2+ ions

被引：16

作者：

Wang, Fei ^{[1
,2
]}

Hao, Ming ^{[1
,2
]}

Liang, Jinsheng ^{[1
,2
]}

Gao, Peizhang ^{[1
,2
]}

Zhu, Maomao ^{[1
,2
]}

Fang, Baizeng ^{[3
]}

Zhang, Hui ^{[1
,2
]}

Shang, Zengyao ^{[1
,2
]}

机构：

[1] Hebei Univ Technol, Minist Educ, Key Lab Special Funct Mat Ecol Environm & Informa, Tianjin 300130, Peoples R China

[2] Hebei Univ Technol, Inst Power Source & Ecomat Sci, Tianjin 300130, Peoples R China

[3] Univ British Columbia, Dept Chem & Biol Engn, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada

来源：

RSC ADVANCES | 2019年 / 9卷 / 69期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

AQUEOUS-SOLUTION; MICROWAVE IRRADIATION; HYDROGEN-PEROXIDE; REMOVAL; CADMIUM; EXFOLIATION; CD(II); PB(II); ACID; LEAD;

D O I：

10.1039/c9ra07836c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, sepiolite mineral nanofibers are facilely prepared by a microwave-hydrogen peroxide method, and the bulk densities of the samples are adopted to evaluate the defibering effect. The samples are systematically characterized through X-ray diffraction, scanning electron microscopy, specific surface area measurement and zeta potential determination, and the adsorptive performance for heavy metal ions in aqueous solution is studied using cadmium ions as the representative. It is found that the specific surface area and cumulative pore volume increase respectively up to 109.21 m(2) g(-1) and 0.234 cm(3) g(-1) under the microwave power of 400 W, while the zeta potential reaches a maximum when the pH is 5.0. The adsorption efficiency of sepiolite mineral nanofibers for cadmium ions can reach 68.6% as the optimal value. The as-fabricated sepiolite nanofibers can be regarded as a low-cost and environmentally friendly material which is a promising candidate for heavy metal ion removal from industrial wastewater.

引用

页码：40184 / 40189

页数：6

共 45 条

[1] FTIR and zeta potential measurements of sepiolite treated with some organosilanes [J].