以纳米零价铁材料性质研究为媒介推动水化学课程学习

纳米零价铁具备零价铁的特性,由于其纳米级尺寸,具有量子尺寸小于及更高的反应活性.该论文通过设计系列实验,包括纳米零价铁的合成、表面化学性质测定（X-射线光电子能谱）、晶体结构测定（x-射线电子衍射）和材料粒径及表面结构测定等（透射电子显微镜）,存在于水环境中后水质参数（pH和ORP）的变化来学习有关水化学的基本概念.使得研究生同学通过一种材料的表征研究、掌握环境化学研究基本知识,务实科研基础.

Using nano Zero-Valent Iron to Teach Aquatic Chemistry

Sine nZVI materials have abundant structural and chemical information, the specific goal of this task to study the basic concept and characterized method on chemistry using the nZVI.A series of experiments were designed to study the chemical concept with nano zero--valent iron （nZVI）. Fe（0） could react with water to release release ferrous, Fe（11）, species under both anaerobic and aerobic conditions. The release of OH- and H2 will have an impact on solution pH and ORP （oxidation-reduction potential）, which are the two key parameters that affect virtually all aqueous reactions. By means of characterization of nZVI, such as the solid surface chemistry will be taught. 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）. Using nZVI, students take chance to study the college chemistry easily.