Adsorption Studies of Gadolinium ion on Graphitic Carbon Nitride

7th National Conference on Processing and Characterization of Materials

Kuila, S.K.^1 ; Kundu, T.K.^1

Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal

721302, India^1

关键词: Adsorption capacities;    Adsorption characteristic;    Adsorption studies;    Energy dispersive X ray spectroscopy;    Graphitic carbon nitrides;    Phase identification;    Thermal decomposition of urea;    X-ray diffraction techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/338/1/012006/pdf
DOI  :  10.1088/1757-899X/338/1/012006

来源: IOP

【 摘 要 】

Bulk graphitic carbon nitride (g-C3N4) is synthesized by thermal decomposition of urea and used as an adsorbent for gadolinium ion (Gd3+) from aqueous solution. Adsorption capacity of g-C3N4is found to be influenced by initial Gd3+concentration, solution pH and contact time. Adsorbed Gd3+is separated from g-C3N4by ultracentrifuge. Initial and Gd ion accumulated g-C3N4adsorbent are characterized by X-ray diffraction technique (XRD) for phase identification, UV-visible and Fourier transform infrared (FTIR) spectroscopy for adsorption characteristics and optical property, scanning electron microscopy (SEM) for morphological behaviour along with energy dispersive X-ray spectroscopy (EDS) for elemental study. HNO3(0.1M), NaOH (0.1M) and de-ionized water are used for desorption and around 97% quantitative recovery of Gd ion is observed.