Aqueous stability of oxidized carbon nanotubes and the precipitation by salts
Aqueous stability of oxidized carbon nanotubes and the precipitation by salts
复制标题
氧化碳纳米管的水稳定性和盐沉淀
DOI：
10.1016/j.jhazmat.2008.10.049
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发表时间：
2009-06-15
影响因子：
13.6
通讯作者：
Fan, Bin
中科院分区：
文献类型：
--
作者：
Peng, Xianjia;Jia, Jianjun;Fan, Bin
研究了硝酸氧化碳纳米管的稳定性和氧化碳纳米管在水中的盐沉淀。稳定性研究表明，在30 d的老化时间内，氧化后的CNTs分散液在252 nm处显示出单个CNTs的特征紫外-可见吸收峰，老化30 d后分散液中CNTs浓度为初始浓度的85%。结果表明：NaCl> KCl> 1/2（MgCl（2））> 1/2（CaCl（2））> 1/3（FeCl（3））> 1/3（AlCl（3））。阴离子的性质对盐的沉淀值影响不大。(c)2008 Elsevier B. V.保留所有权利。
The stability of nitric acid oxidized carbon nanotubes (CNTs) and the precipitation of oxidized CNTs in water by salts were investigated. Stability investigation shows that during an aging time of 30 days, oxidized CNTs dispersion shows characteristic UV-vis absorbance peak of individual CNTs at 252 nm and CNTs concentration in the dispersion after 30 d aging is 85% of the initial concentration. The precipitation value of salts were measured and the precipitation value follows the order of NaCI > KCI > 1/2(MgCl(2)) > 1/2(CaCl(2)) > 1/3(FeCl(3)) > 1/3(AlCl(3)). The nature of anions investigated has little effect on precipitation values of salts. (c) 2008 Elsevier B.V. All rights reserved.