| 초록 |
Heavy metals in wastewater cause serious health issues in humans. Among methods to remove of heavy metals, adsorption has received attention because of low cost and high adsorption efficiency. Graphene oxide(GO) has been getting the spotlight as an absorbent because it has a large surface area as well as plenty of functional groups. To apply GO as a practical absorbent, GO has been assembled to macroscopic structure. In this study, for the first time, we applied GO fiber as an absorbent for heavy metal removal because GO fiber has distinctive advantages such as high surface to volume ratio with high flexibility and continuous wet producibility. We prepared the mechanically enhanced GO fiber by employing carboxymethyl cellulose(CMCNF) and Fe3+ as a filler and coordination ion, respectively, to form enhanced crosslinking between materials. Our fiber effectively removed Pb (120 mg/g) and easily removed from the effluent after adsorption, indicating facile recovery of absorbent after use. |
