1. 毕业设计（论文）的内容和要求

超声由于存在空化作用，能对颗粒有良好的分散效果，是制备溶胶的一种非常好的方法。

超声沉淀法是将超声与沉淀法相结合，通过超声的作用将沉淀颗粒细化制备得到溶胶。

本课题将考察超声时间、超声功率密度对溶胶的影响，并通过对前驱体与沉淀剂摩尔比的调节实现在一定范围内对溶胶粒径的调控。

2. 参考文献

[1] Prasad K, Pinjari D V, Pandit A B, et al. Synthesis of titanium dioxide by ultrasound assisted sol-gel technique: Effect of amplitude (power density) variation [J]. Ultrasonics Sonochemistry, 2010, 17(4): 697-703 [2] Prasad K, Pinjari D V, Pandit A B, et al. Phase transformation of nanostructured titanium dioxide from anatase-to-rutile via combined ultrasound assisted sol-gel technique [J]. Ultrasonics Sonochemistry, 2010, 17(2): 409-415 [3] Jhung S H, Yoo K C, Hwang Y K, et al. Size control of silicone particles using sonochemical approaches [J]. Bulletin of the Korean Chemical Society, 2007, 28(12): 2401-2404 [4] Gedanken A. Using sonochemistry for the fabrication of nanomaterials [J]. Ultrasonics Sonochemistry, 2004, 11(2): 47-55 [5] Lu Y W, Chen T, Chen X F, et al. Fabrication of TiO2-doped ZrO2 nanofiltration membranes by using a modified colloidal sol-gel process and its application in simulative radioactive effluent [J]. Journal of Membrane Science, 2016, 514: 476-486 [6] Neppolian B, Wang Q, Jung H, et al. Ultrasonic-assisted sol-gel method of preparation of TiO2 nano-particles: Characterization, properties and 4-chlorophenol removal application [J]. Ultrasonics Sonochemistry, 2008, 15(4): 649-658 [7] Soderzhinova M M, Tarasova D V, Chibirova F K. Ultrasound-assisted synthesis of titania hydrosols [J]. Russian Journal of Inorganic Chemistry, 2014, 59(8): 801-806 [8] Ashokkumar M. The characterization of acoustic cavitation bubbles - An overview [J]. Ultrasonics Sonochemistry, 2011, 18(4): 864-872 [9] Kim H-M, Lee C-H, Kim B. Sonochemical synthesis of silica particles and their size control [J]. Applied Surface Science, 2016, 380: 305-308

3. 毕业设计（论文）进程安排

2.20-3.4：开题报告，并翻译文献。

3.7-2.27：开展实验，考察超声功率密度、超声时间对所制备的氧化锆材料的影响。

3.28-4.10：考察前驱体与沉淀剂摩尔比的影响，实现对溶胶粒径的调控。