Heliyon, Volume (5), No (4), Year (2019-4)

Title : ( Chitosan/polyvinyl alcohol nanofibrous membranes: towards green super-adsorbents for toxic gases )

Authors: Ghasem Sargazi , Daryoush Afzali , Ali Mostafavi , Alireza Shadman , Babak Rezaee , Payam Zarrintaj , Mohammad Reza Saeb , Seeram Ramakrishna , Masoud Mozafari ,

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Abstract

Removal of hazardous gases from the atmosphere has become a big challenge for scientists and engineers alike. Eco-friendly nature of biopolymers has given a new dimension to the debate within the environmental science area but attempts mainly failed to cleanse the air stream of toxic gases as a consequence of design imperfections. In this work, green electrospun nanofibrous membranes based on chitosan (Cs)/polyvinyl alcohol (PVA) composite with a very high carbon monoxide adsorption capacity (much higher than the values one may expect from activated carbon and zeolite adsorbents, and also higher than that of the metal-organic framework) are developed. 2k−1 factorial design, response surface and desirability function analyses are merged to optimize the electrospinning parameters for functional-based carbon monoxide elimination. The best Cs/PVA adsorbent obtained through multi-objective optimization has a very high desirability value level of 0.953. Optimized electrospinning parameters are: Voltage = 17 kV, spinning distance = 13 cm, flow rate = 0.2 mL/h, and PVA concentration = 6 wt.%; and optimized properties are: maximum thermal stability = 329 °C, minimum fiber diameter = 9.8 nm, and maximum surface area = 2204 m2/g. This work opens a new era for taking the next steps towards the design and optimization of green super-adsorbents for gaseous contaminations.

Keywords

Materials science
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@article{paperid:1087092,
author = {Ghasem Sargazi and Daryoush Afzali and Ali Mostafavi and Shadman, Alireza and Babak Rezaee and Payam Zarrintaj and Mohammad Reza Saeb and Seeram Ramakrishna and Masoud Mozafari},
title = {Chitosan/polyvinyl alcohol nanofibrous membranes: towards green super-adsorbents for toxic gases},
journal = {Heliyon},
year = {2019},
volume = {5},
number = {4},
month = {April},
issn = {2405-8440},
keywords = {Materials science},
}

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%0 Journal Article
%T Chitosan/polyvinyl alcohol nanofibrous membranes: towards green super-adsorbents for toxic gases
%A Ghasem Sargazi
%A Daryoush Afzali
%A Ali Mostafavi
%A Shadman, Alireza
%A Babak Rezaee
%A Payam Zarrintaj
%A Mohammad Reza Saeb
%A Seeram Ramakrishna
%A Masoud Mozafari
%J Heliyon
%@ 2405-8440
%D 2019

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