Preparation of dialdehyde cellulose graftead graphene oxide composite and its adsorption behavior for heavy metals from aqueous solution. (15th May 2019)

• Record Type: Journal Article
• Authors: Yao, Mingjun; Wang, Zhen; Liu, Yu; Yang, Guihua; Chen, Jiachuan
• Is Part Of: Carbohydrate polymers. Volume 212(2019)
• Page Start: 345
• Page End: 351
• Publication Date: 2019-05-15
• Subjects: Dialdehyde cellulose -- Graphene oxide -- Triethylenetetramine -- Adsorbent -- Heavy metal; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2019.02.052
• Languages: English
• ISSNs: 0144-8617

Abstract

Graphical abstract: Highlights: GO-TETA-DAC was synthesized by dialdehyde cellulose grafted graphene oxide. GO-TETA-DAC was used as adsorbent and has perfect performance for heavy metal removal. The mechanism of synthesis and adsorption process was proposed. Abstract: A novel adsorbent GO-TETA-DAC was synthesized by using dialdehyde cellulose (DAC) grafted graphene oxide (GO) with triethylenetetramine (TETA) acted as cross-linking reagent. The product was characteristics by FT-IR, BET and SEM, results proved the preparation process was successful. GO-TETA-DAC was applied to disposal Cu (II) and Pb (II) ions from aqueous solution and achieved excellent performance. The maximum adsorption capacity 65.1 and 80.9 mg/g for Cu(II) and Pb(II) when pH was 5.0. Adsorption isotherm and kinetics revealed the adsorption process complied with Langmuir model and pseudo-second-order model. Furthermore, the reusability of GO-TETA-DAC was also explored, the adsorption efficiency can still over 77% even after four times of recycling.