Entrapment and Removal of Carbon Nanotubes and Fullerenes by Coprecipitation with Calcium Carbonate Beads

被引：4
|
作者：
Pu, Sheng-yan [1 ]
Zinchenko, Anatoly [2 ]
Chen, Ning [3 ]
Murata, Shizuaki [2 ]
机构：
[1] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Peoples R China
[2] Nagoya Univ, Grad Sch Environm Studies, Chikusa Ku, Nagoya, Aichi 4648601, Japan
[3] Nagoya Univ, Ctr Environm Management & Safety, Chikusa Ku, Nagoya, Aichi 4648601, Japan
来源：
ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2014年 / 2卷 / 10期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Nanomaterials pollution; Nanomaterials removal; Coprecipitation; Calcium carbonate beads; WASTE-WATER; ENGINEERED NANOMATERIALS; ENVIRONMENTAL EXPOSURE; AGGREGATION KINETICS; OXIDE NANOPARTICLES; TITANIUM-DIOXIDE; MICROPARTICLES; RISK; FATE;
D O I：
10.1021/sc500230c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Production, growth, and obvious health and environmental concerns about engineered nanomaterials (ENM) require development of methods for their entrapping/removal. Here, we propose a facile method for removal of carbon nanomaterials from water solutions based on coprecipitation with vaterite (CaCO3) beads. CaCO3 beads are formed by an aggregation of initially formed amorphous CaCO3 nanopartides that efficiently incorporate nanomaterials in solution into the growing beads so that can be finally removed by settling. We show that by using this approach, a high percentage of fullerenes and carbon nanotubes (typically over 95%) can be removed in a broad range of ENM concentrations. We also discuss potential applications of the method for treatment of contaminated water.
引用
收藏
页码：2275 / 2282
页数：8
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