nobel method for toluene removal from air based on ionic liquid modified nano-graphen

the aim of this study was to investigate the removal of toluene from air through nano-graphene modified by ionic liquid (ng-il). the batch adsorption experiments in glass bottle of gas chromatography equipped with flame ionization detector (gc-fid) were used. graphene ultrahigh-quality synthesized by substrate-free gas-phase method in a single step and graphene sheets were deposited with ionic- liquid by thermal adsorption in acetone blank solution. various conditions including contact time, amount of adsorbent, adsorbate concentration, humidity, and temperature were studied and optimized. ng-il adsorbent was used for the adsorption of toluene vapor from gaseous media and the effect of different conditions such as; toluene concentration, humidity, and temperature on the adsorption were investigated. the langmuir adsorption isotherms were employed for toluene by ng-il adsorbent. the adsorption capacity was decreased by raising the sorbent humidity above 50 percent. the toluene capture capacity for ng-il was 126 mg/g. the results of sem, xrd, and tem showed that, the ng-il have beneficial surfaces for toluene removal. ng-il as a novel adsorbent has not previously been used for the adsorption of pollutants.