Controlled functionalisation of graphene oxide using ethylene diamine: a one-pot synthesis approach for chromium sorption

Micro & nano letters

article

Gopika Govindankutty¹  Shreya Hareendran²  Asha Sathish¹  Nithya Kamaraj³ 

[1] Department of Sciences;Department of Chemistry, Mercy College;Department of Chemical Engineering and Materials Science

关键词: monolayers;    X-ray chemical analysis;    nanofabrication;    nanocomposites;    scanning electron microscopy;    oxidation;    pH;    adsorption;    graphene;    thermal analysis;    intercalation compounds;    infrared spectra;    Fourier transform spectra;    sorption;    X-ray diffraction;    chromium;    ethylene diamine modified graphene oxide;    controlled functionalisation;    one-pot synthesis approach;    chromium sorption;    direct compounding method;    SEM-EDX techniques;    contact time;    time 60.0 min;    mass 0.05 g;   

DOI  :  10.1049/mnl.2020.0158

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Introduction of ethylene diamine into the layers of graphene oxide was achieved through direct compounding method. Graphene oxide intercalated with ethylene diamine was characterised by Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermo gravimetric analysis (TGA) and scanning electron microscopy–energy dispersive X-ray spectroscopy (SEM-EDX) techniques. The efficiency of the material in adsorbing chromium was evaluated through batch scale studies by optimising parameters like pH, concentration and contact time. The material renders a monolayer adsorption capacity of 69.93 mg/g, at pH 1 within 60 min time period for a minimal dosage of 0.05 g. The ethylene diamine modified graphene oxide thus appeals to be a promising adsorbent for environmental applications.

【 授权许可】

CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND