PMID: 19031883Nov 27, 2008Paper

Aqueous adsorption of aniline, phenol, and their substitutes by multi-walled carbon nanotubes

Environmental Science & Technology
Kun YangLizhong Zhu

Abstract

Aqueous adsorption of a series of phenols and anilines by a multiwalled carbon nanotube material (MWCNT15), which depends strongly on the solution pH and the number and types of solute groups, was investigated in this study. The pH-dependent adsorption coefficients, Kd, could be predicted by the established models including solute pKa and solution pH values. Phenol or aniline substitution with more groups has higher adsorption affinity, and nitro, chloride, or methyl groups enhanced adsorption in the following order: nitro group > chloride group > methyl group. All adsorption isotherms of nondissociated phenols and anilines are nonlinear and fitted well bythe Polanyi-theory based Dubinin-Ashtakhov (DA) model. Linear quantitative relationships combining DA model parameters (E and b) with solute solvatochromic parameters were developed to evaluate the adsorptive behaviors of nondissociated species. For the saturated sorbed capacity, Q0, the logarithmic values of phenols and anilines were relatively constant with a mean value of 1.90. Besides the van der Waals force, H-bonding interactions from solutes as hydrogen-bonding donors, and followed by pi-electron polarizability, may play important roles on the adsorption of phenols and ...Continue Reading

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Citations

Apr 11, 2013·Water Research·Xiaolei QuQilin Li
Jul 4, 2012·Environmental Science & Technology·Onur G ApulTanju Karanfil
Jul 24, 2012·Environmental Science & Technology·Mingying ZouXuehua Li
Jun 27, 2013·Environmental Science & Technology·Xiaoyun LiBaoshan Xing
Jan 7, 2015·Environmental Science and Pollution Research International·Kun YangDaohui Lin
Feb 18, 2015·Environmental Science and Pollution Research International·Seok-Young Oh, Yong-Deuk Seo
Jul 17, 2012·Ecotoxicology and Environmental Safety·Muthanna J Ahmed, Samar K Theydan
Mar 1, 2012·Journal of Hazardous Materials·Yuan TianLiuyan Yang
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Sep 22, 2010·Journal of Hazardous Materials·Ljiljana DamjanovićAline Auroux
Dec 7, 2014·Environmental Pollution·Maya Engel, Benny Chefetz
May 10, 2015·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Ping ZhangRay L Frost
Apr 15, 2016·Environmental Science and Pollution Research International·Rusul Khaleel IbrahimShaliza Ibrahim
Nov 16, 2013·Journal of Hazardous Materials·Chanil JungYeomin Yoon
May 13, 2015·Water Research·Yang ZhouTanju Karanfil
Mar 25, 2014·The Science of the Total Environment·Jin-Gang YuXiao-Qing Chen
Dec 3, 2014·Water Research·Onur Guven Apul, Tanju Karanfil
Oct 22, 2014·Environmental Science and Pollution Research International·Fei YuDongsu Bi
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May 18, 2016·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xingmao Ma, Sarang Agarwal
Oct 23, 2016·Water Research·Qian GaoXilong Wang

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