目 录
1.1.1纳米氧化锌的结构…………………………………………………..
1.1.2纳米氧化锌的基本特性………………………………………………
1.2纳米氧化锌光催化原理…………………………………………..
1.3纳米氧化锌作为光催化剂的优缺点………………………………….
1.4提高纳米氧化锌光催化性能的方法………………………………….
2.1 纳米氧化锌制备方法介绍………………………………………
2.1.1化学制备方法……………………………………………………..
2.1.2物理制备方法…………………………………………………….
2.2实验原理……………………………………………………..
2.3纳米氧化锌光催化剂的制备……………………………………..
2.3.1仪器与试剂……………………………………………..
2.3.2铜掺杂氧化锌光催化的制备………………………………..
3.1主要仪器……………………………………………………
3.2铜掺杂纳米氧化锌光催化剂的表征结果…………………………….
3.2.1XRD结果……………………………………………………………………………………
3.2.2UV-vis结果…………………………………………………………………………………
3.2.3FS结果………………………………………………………………………………………
3.2.4FT-IR结果……………………………………………………………………………………
4 铜掺杂纳米氧化锌光催化性能研究……………………………………
4.1实验部分………………………………………………………………………………
4.1.1仪器与试剂…………………………………………………………………
4.2铜掺杂纳米氧化锌光催化性能评价…………………………………………………
4.2.1不同Cu掺杂量对光催化性能的影响…………………………………………
4.2.2煅烧实践队降解性能的影响………………………………………………….
4.2.3煅烧时间对降解性能的影响…………………………………………………
摘 要
纳米氧化锌作为一种新型的功能材料，其本身具有许多优点：价格低、无毒、催化效果好、结构和性能稳定性好等，相信要不了多久在光催化领域发挥很大的作用。但氧化锌自身也存在缺点，会发生光腐蚀就是阻碍其应用的问题，导致催化活性不高等；并且，其吸收波长存在紫外光区，其利用能力较低；同时，还存在载流子重新聚合快，量子作用小等缺点，所以如何解决光催化效率问题还有很长的一段路要走，所以，提高纳米氧化锌的光催化效率及克服自身缺点意义重大。
通过比较，本文制备纳米氧化锌的采用的方法为溶胶-凝胶法，并研究了利用铜掺杂纳米 ZnO 光催化剂的制备工艺，用 X 射线衍射、红外吸收光谱、紫外-可见吸收光谱和分子荧光光谱等方法对其结构进行了分析表征。
关键词： 纳米 ZnO，掺杂，溶胶-凝胶法，光催化
Abstract
Nano zinc oxide as a new type of functional material, itself has many advantages: low price, non-toxic, good catalytic effect, stability of the structure and performance of good, I believe or how long in the photocatalytic field play a big role. But zinc oxide also has its own disadvantages, light corrosion is hindered its application, resulting in catalytic activity is not high; and the absorption wavelength ultraviolet region, using capacity is low; at the same time, there are still carriers re polymerization, quantum effects, such as the shortcomings, so how to solve the photocatalytic efficiency problem there is still a long road to go. Hence, how to improve the photocatalytic efficiency of nano zinc oxide and overcome their own shortcomings is of great significance.
The ZnO nanoparticles have been prepared by the sol – gel and on the basis of the prepared Cu doped ZnO photocatalyst, using X-ray diffraction, infrared absorption spectra, UV visible absorption spectrum and fluorescence spectrum method on the structure were characterized and analyzed. With UV lamp as light source, methyl orange as target compounds, of nano ZnO and Cu doped nano ZnO light catalytic activity were studied.
Key word: nano ZnO, doping, sol gel method, photocatalysis
