Polyaniline (PANI): an innovative support for sampling and removal of VOCs in air matrices

JOURNAL OF HAZARDOUS MATERIALS

卷:344

Article

Della Pina, Cristina¹  De Gregorio, Maria Antonietta²  Clerici, Laura²  Dellavedova, Pierluisa²  Falletta, Ermelinda¹ 

[1] Univ Milan, Dipartimento Chim, Via C Golgi 19, I-20133 Milan, Italy

[2] ARPA Lombardia, Settore Lab, Via Rosellini 17, I-20124 Brescia, Italy

关键词: Polymers;    Sampling;    VOCs;    Air matrix;    Pollutants abatement;   

DOI  :  10.1016/j.jhazmat.2017.10.012

来源: Elsevier

【 摘 要 】

Polyaniline (PANI)-based materials for both removal and sampling of volatile organic compounds (VOCs) from air by rapid adsorption/desorption processes have been developed. The polymer was synthesized in form of emeraldine as both salt and base using different synthetic approaches, a traditional one and a green one. VOCs adsorption/desorption efficiency was evaluated for all the materials analyzing the desorbed VOCs fractions by GC/MS technique and obtaining results similar to the presently adopted method employing commercial activated carbon. Most important, in this work it has been demonstrated for the first time that the use of PANI-based sorbents allowed the substitution of the toxic CS2, recommended in official methods, with the less hazardous CH3OH as the VOCs extraction solvent. Moreover, a complete regeneration of the polymers could be realized by a few rapid washing steps. Finally, the best PANT based material was subjected to recycling tests thereby showing a high adsorption/desorption efficiency retention up to four runs. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free