Mocioiu Oana-Cătălina, Atkinson Irina, Mocioiu Ana-Maria, Neagu Simona, Ruginescu Robert, Mitran Raul-Augustin, Enache Mădălin
Institute of Physical Chemistry Ilie Murgulescu of the Romanian Academy-ICF, 202 Splaiul Independenţei, 060021 Bucharest, Romania.
National Research & Development Institute for Non-Ferrous and Rare Metals-IMNR, 102 Biruinţei Blvd., 077145 Pantelimon, Romania.
Gels. 2021 Dec 7;7(4):251. doi: 10.3390/gels7040251.
One of the current research objectives is the development of new films for the conservation of glass heritage objects. The value of historical glass objects is given by the technology and raw materials used in production as well as their transparency and color. Their colors are correlated with oxide composition rich in transitional metals, which decrease resistance of corrosive agents from the atmosphere. In this paper, SiO-ZnO gels have been designed to protect historical glass objects. The sol-gel method used to obtain gels is a powerful tool for functionalizing different materials. An important functionalization is the antibacterial activity. By applying a gel, the coated material is able to decrease the growth of bacteria. After deposition, some gels must be strengthened by heat treatment. The effect of ZnO content (10 mol% and 20 mol%) on the properties of the studied gels was investigated by Differential scanning calorimetry (DSC), Fourier transform infrared (FTIR), X-ray diffraction (XRD), Scanning electron microscopy (SEM), and antibacterial tests. ATCC 25922, ATCC 25923, and the halotolerant bacterium, , isolated from a salt crystal from Unirea mine, Slănic Prahova, Romania, were used. The gel Gel 2 (SiO-ZnO (20 mol%)) showed the best properties.
当前的研究目标之一是开发用于保护玻璃文物的新型薄膜。历史玻璃制品的价值取决于生产中使用的技术、原材料以及它们的透明度和颜色。它们的颜色与富含过渡金属的氧化物组成相关，过渡金属会降低大气中腐蚀剂的抗性。在本文中，设计了SiO-ZnO凝胶来保护历史玻璃制品。用于制备凝胶的溶胶-凝胶法是使不同材料功能化的有力工具。一个重要的功能化是抗菌活性。通过应用凝胶，被涂覆的材料能够减少细菌的生长。沉积后，一些凝胶必须通过热处理进行强化。通过差示扫描量热法（DSC）、傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）、扫描电子显微镜（SEM）和抗菌测试研究了ZnO含量（10摩尔%和20摩尔%）对所研究凝胶性能的影响。使用了ATCC 25922、ATCC 25923以及从罗马尼亚斯拉尼察普拉霍瓦的Unirea矿盐晶体中分离出的耐盐细菌。凝胶Gel 2（SiO-ZnO（20摩尔%））表现出最佳性能。
