|
Type |
Poster Presentation |
Area |
Material Chemistry |
Room No. |
Event Hall |
Time |
4월 20일 (금요일) 11:00~12:30 |
Code |
MAT.P-328 |
Subject |
Preparation of the carbamoyl phosphine oxide moiety functionalized nitrogen doped mesoporous graphene for removal of rare earth elements |
Authors |
Hyunju Kim, Jihye Lee, Hyun Jung* Department of Chemistry, Dongguk University, Korea |
Abstract |
We successfully synthesized the the carbamoyl phosphine oxide moeity functionalized mesoporous grpahene (CMPO-NMG) with high surface area for selective removal of rare earth elements (REEs). Firstly, N-doped mesoporous graphene (NMG) was fabricated by hydrothermal reaction of graphene oxide (GO) combining with ammonium hydroxide and triblock copolymer (Pluronic P123). Then, the CMPO-NMG was obtained by amide coupling between the prepared NMG and triethylphonoaceatate. The obtained products were fully characterized with respect to their structural and morphological properties by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM). The Fourier transform infrared spectroscopy (FT-IR) measurements were used to prove the existence of amide bond in CMPO-NMG. Furthermore, we measured X-ray photoelectron spectroscopy (XPS) to analyse the elemental composition and the change of nitrogen configuration after functionalization of NMG. By measuring the N2 adsorption-desorption isotherm, we confirmed that the CMPO-NMG has mesoporous structure and high specific surface area. In order to evaluate the adsorption performance for REEs, the time-dependant adsorption capacity of the CMPO-NMG was investigated by using inductively coupled plasma mass spectrometry (ICP-MS). |
E-mail |
hjgw922@naver.com |
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