牙科修复用CuO掺杂纳米二氧化钛的制备与表征

目的 通过氧化铜掺杂,制备改性氧化铜纳米二氧化钛光催化剂,检测氧化铜掺杂对CuO/TiO₂复合光催化剂吸收光谱的影响,为研制口腔临床修复功能性材料提供依据。方法 采用共沉淀法制备CuO/TiO₂（CuO掺杂纳米二氧化钛）,通过X射线衍射仪（XRD）、扫描电镜（SEM）和紫外-可见光吸收光谱（UV-vis谱）对其形态、结构、组成和性质进行表征。结果 成功制备了CuO/TiO₂复合光催化剂,不同CuO掺杂比的TiO₂的形貌基本不变,CuO掺杂使CuO/TiO₂吸收光谱发生红移,增加了可见光的吸收边界,提高可见光响应。结论 掺杂CuO后的光催化剂有效地提高其可见光响应能力,减少了空穴和电子复合,提高了可见光响应的性能。本研究对解决口腔临床修复对抗菌抑菌自洁特性材料的需求具有参考意义。

Preparation and characterization of CuO Doped nano-TiO2 for dental restoration

Objective In this paper, modified nano CuO/TiO₂ photocatalyst was fabricated by doping CuO, and the absorption spectrum of CuO doping was detected, which provided a basis for the development of functional dental restorative materials. Methods A copper oxide/titanium oxide (CuO doped nano-titanium dioxide) catalyst was prepared by coprecipitation method, and its morphology, structure and composition were analyzed by XRD (X-ray diffractometer), SEM (scanning electron microscopy) and ultraviolet-visible spectrum. Results The results have shown that the doped CuO made the absorption spectrum of the CuO/TiO₂ red shift, which increases the absorption range and the responcec of visible light. Conclusions The photocatalyst doped with CuO effectively improves the visible light response capability, reduces the recombination of holes and electrons, and improves the performance of the photocatalyst. This study has reference significance for the needs of dental restorative materials with antibacterial and self-cleaning properties.