离子改性二氧化钛抗菌材料及在陶瓷领域的应用基础研究

项目名称： 离子改性二氧化钛抗菌材料及在陶瓷领域的应用基础研究

项目编号： No.51474056

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 矿业工程

项目作者： 王梅

作者单位： 东北大学

项目金额： 80万元

中文摘要： TiO2光催化剂在紫外光作用下可以催化降解有机污染物、杀菌消毒，从而达到净化环境的目的。然而，在实际应用中，TiO2仍然存在着量子效率低、可见光利用率低和粉体液相灭菌后的分离回收等问题，这极大的限制了TiO2光催化剂的应用前景。本课题针对TiO2在光催化领域存在的这些问题，通过掺杂非金属及金属元素提高TiO2纳米材料的光催化抗菌活性，并系统地研究了其光催化抗菌机理，为TiO2纳米材料在光催化抗菌领域的进一步应用提供了理论依据和实验基础。研究中首次采用硼酸、锌/稀土为掺杂剂，制备硼/二氧化钛(B/TiO2)和锌/稀土/二氧化钛(Zn/Re/TiO2)光催化抗菌剂，从而扩展TiO2的光响应区间及提高量子效率。将抗菌材料负载于陶瓷表面制备抗菌陶瓷，确保既提高陶瓷抗菌活性又不影响产品的外观性能。

中文关键词： 二氧化钛；锌铈共掺杂；锌钇共掺杂；硼掺杂；抗菌活性

英文摘要： TiO2 could purify circumstance due to their photocatalytic degradation of organic polluted compounds and antibacterial sterilization under the radiation of UV. However, photocatalytic efficiency of TiO2 is limited by its low quantum efficiency, low utilization of visible light, separating and recovering the powder after liquid sterilization. Here we focus on improving the photocatalytic antibacterial efficiency of TiO2 through metal or non-metal doped, and the photocatalytic antibacterial mechanism is studied systematically. This provides experimental basis and theoretical basis for the further application of the TiO2 nano-materials. In the present research contents, boric acid and zinc/rare earth as dopant agent, B/TiO2 and Zn/Re/TiO2 antibacterial materials are prepared, which result in expending the photoresponse interval and improving quantum efficiency. Antibacterial agent used to ceramic matrix to prepare antibacterial ceramic. Ensure that both improve ceramic antibacterial activity and does not affect the appearance and performance of the product.

英文关键词： titanium dioxide;zinc and cerium co-doping;zinc and yttrium co-doping;boron doping;antibacterial activity