Sun Yuan-Pang, Li Xiao-qin, Cao Jiasheng, Zhang Wei-xian, Wang H Paul
Center for Advanced Materials and Nanotechnology, Department of Civil and Environmental Engineering, Lehigh University, Bethlehem, PA 18015, USA.
Adv Colloid Interface Sci. 2006 Jun 30;120(1-3):47-56. doi: 10.1016/j.cis.2006.03.001. Epub 2006 May 12.
The iron nanoparticle technology has received considerable attention for its potential applications in groundwater treatment and site remediation. Recent studies have demonstrated the efficacy of zero-valent iron nanoparticles for the transformation of halogenated organic contaminants and heavy metals. In this work, we present a systematic characterization of the iron nanoparticles prepared with the method of ferric iron reduction by sodium borohydride. Particle size, size distribution and surface composition were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), high-resolution X-ray photoelectron spectroscopy (HR-XPS), X-ray absorption near edge structure (XANES) and acoustic/electroacoustic spectrometry. BET surface area, zeta (zeta) potential, iso-electric point (IEP), solution Eh and pH were also measured. Methods and results presented may foster better understanding, facilitate information exchange, and contribute to further research and development of iron nanoparticles for environmental and other applications.
铁纳米颗粒技术因其在地下水处理和场地修复中的潜在应用而受到了广泛关注。最近的研究表明，零价铁纳米颗粒在卤代有机污染物和重金属的转化方面具有有效性。在这项工作中，我们对通过硼氢化钠还原三价铁的方法制备的铁纳米颗粒进行了系统表征。通过透射电子显微镜（TEM）、X射线衍射（XRD）、高分辨率X射线光电子能谱（HR-XPS）、X射线吸收近边结构（XANES）和声/电声光谱法对颗粒大小、尺寸分布和表面组成进行了表征。还测量了BET表面积、ζ（zeta）电位、等电点（IEP）、溶液的氧化还原电位（Eh）和pH值。本文所呈现的方法和结果可能有助于更好地理解，促进信息交流，并有助于铁纳米颗粒在环境和其他应用方面的进一步研究与开发。
