期刊
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
卷 7, 期 3, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2019.103137
关键词
Phosphate; Adsorption; N-doped graphene oxide; Iron oxide; Composite
资金
- National Natural Science Foundation of China [51573011, 51603007]
- National Key RD Plan [2017YFB0307800]
- Beijing Laboratory of Biomedical Materials
Phosphate deduction is an essential measure compulsory to control eutrophication of water bodies as it hinders disproportionate algae development. Presently existing phosphate removal approaches have several limitations. This study successfully prepared a nitrogen-doped reduced graphene oxide (NrGO) and nitrogen doped reduced graphene oxide decorated with Fe3O4 nanoparticles as nanocomposite adsorbents which exhibited high capacity and specific affinity towards phosphate. The crystal structure, surface morphology and stability of the adsorbents were investigated by various physiochemical characterizations which revealed the successful doping of nitrogen in GO and uniformly covered by Fe3O4 nanoparticles. The kinetic study suggests the pseudo second-order better fitted the phosphate adsorption with physisorption and chemisorption. The Freundlich isotherm model better fitted the phosphate adsorption with removal capacity of 169.7 mg g(-1) while the reaction mechanism confirms the successful phosphate adsorption by composite material. This study provides an easy synthesis of nitrogen-doped graphene oxide magnetic composite materials with the potential for large scale application.
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