Functional Microfiber Nonwoven Fabric with Copper Ion-Immobilized Polymer Brush for Detection and Adsorption of Acetone Gas.

Yung-Yoon Kim,Kazuya Uezu

doi:10.3390/s22010091

Abstract

The detection and removal of volatile organic compounds (VOCs) are emerging as an important problem in modern society. In this study, we attempted to develop a new material capable of detecting or adsorbing VOCs by introducing a new functional group and immobilizing metal ions into a microfiber nonwoven fabric (MNWF) made through radiation-induced graft polymerization. The suitable metal complex was selected according to the data in “Cambridge Crystallographic Data Center (CCDC)”. 4-picolylamine (4-AMP), designated as a ligand through the metal complex data of CCDC, was introduced at an average mole conversion rate of 63%, and copper ions were immobilized at 0.51 mmol/g to the maximum. It was confirmed that degree of grafting (dg) 170% 4-AMP-Cu MNWF, where copper ions are immobilized, can adsorb up to 50% of acetone gas at about 50 ppm, 0.04 mmol/g- 4-AMP-Cu-MNWF, at room temperature and at a ratio of copper ion to adsorbed acetone of 1:10.

Highlights

As air pollution is of worldwide concern, interest in indoor air quality is increasing in both industry and general households
After selecting copper ions as the immobilization target, we identified mobilized ligand binding to acetone
volatile organic compounds (VOCs) efficiently removed and decrease adsorption appears tothat be due to could strongbebinding of some acetone adsorbed by introducing metal ions into microfiber nonwoven fabric, focusing on the gases to 4-AMP-Cu MNWF, resulting in limited desorption

Summary

Introduction

As air pollution is of worldwide concern, interest in indoor air quality is increasing in both industry and general households. A concentration of 1 M of 4-AMP was introduced into GMA MNWF with each degree. A concentration of 1 M of 4-AMP was introduced into GMA MNWF with each degree of grafting, and the introduction characteristics of 4-AMP dependent on the degree of ofgrafting grafting, andconfirmed. The introduction characteristics dependent degree of 8 of 19 were In the case of a tendency toward the high introduction of 4-AMP was confirmed as the degree of grafting. MNWF, a tendency toward the high4-AMP introduction the degree increased. The color of the MNWF-incorporating 4-AMP became darker as the degree of grafting increased.

Methods

Discussion

Conclusion