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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.9
- 수록면
- 463 - 473 (11page)
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초록· 키워드
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Nanoscale zero-valent iron (nZVI) has proved to be an effective tool in applied environmental nanotechnology, where the decreased particle diameter provides a drastic change in the properties and efficiency of nanomaterials used in water purification. However, the agglomeration and colloidal instability represent a problematic and a remarkable reduction in nZVI reactivity. In view of that, this study reports a simple and cost-effective new strategy for ultra-small (＜ 7.5%) distributed functionalized nZVI-EG (1-9 ㎚), with high colloidal stability and reduction capacity. These were obtained without inert conditions, using a simple, economical synthesis methodology employing two stabilization mechanisms based on the use of non-aqueous solvent (methanol) and ethylene glycol (EG) as a stabilizer. The information from UV-Vis absorption spectroscopy and Fourier transform infrared spectroscopy suggests iron ion coordination by interaction with methanol molecules. Subsequently, after nZVI formation, particle-surface modification occurs by the addition of the EG. Size distribution analysis shows an average diameter of 4.23 ㎚ and the predominance (＞ 90%) of particles with sizes < 6.10 ㎚. Evaluation of the stability of functionalized nZVI by sedimentation test and a dynamic light-scattering technique, demonstrated very high colloidal stability. The ultra-small particles displayed a rapid and high nitrate removal capacity from water.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (31)
참고문헌 신청
Fu F, Dionysiou DD, Liu H. The use of zero-valent iron for groundwater remediation and wastewater treatment: A review. J. Hazard. Mater. 2014;267:194-205.
Stefaniuk M, Oleszczuk P, Ok YS. Review on nano zerovalent iron (nZVI): From synthesis to environmental applications. Chem. Eng. J. 2016;287:618-632.
Suslick KS, Fang M, Hyeon T. Sonochemical synthesis of iron colloids. J. Am. Chem. Soc. 1996;118:11960-11961.
Farrell D, Majetich SA, Wilcoxon JP. Preparation and characterization of monodisperse Fe nanoparticles. J. Phys. Chem. B. 2003;107:11022-11030.
Huber DL, Venturini EL, Martin JE, Provencio PP, Patel RJ. Synthesis of highly magnetic iron nanoparticles suitable for field structuring using a β-diketone surfactant. J. Magn. Magn. Mater. 2004;278:311-316.
Stefaniuk M, Oleszczuk P, Ok YS. Review on nano zerovalent iron (nZVI): From synthesis to environmental applications. Chem. Eng. J. 2016;287:618-632.
Suslick KS, Fang M, Hyeon T. Sonochemical synthesis of iron colloids. J. Am. Chem. Soc. 1996;118:11960-11961.
Farrell D, Majetich SA, Wilcoxon JP. Preparation and characterization of monodisperse Fe nanoparticles. J. Phys. Chem. B. 2003;107:11022-11030.
Huber DL, Venturini EL, Martin JE, Provencio PP, Patel RJ. Synthesis of highly magnetic iron nanoparticles suitable for field structuring using a β-diketone surfactant. J. Magn. Magn. Mater. 2004;278:311-316.
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UCI(KEPA) : I410-ECN-0101-2019-539-000448521