El-Wahab H Abd, Alenezy Ebtsam K, Omer Noha, Abdelaziz Mahmoud A, Jame Rasha, Alshareef Shareefa Ahmed, Owda M E
Chemistry Department, Faculty of Science (Boys), Al-Azhar University, Cairo, Egypt.
Chemistry Department, College of Science, Jouf University, Sakaka, Aljouf, 72341, Saudi Arabia.
Sci Rep. 2024 Oct 18;14(1):24413. doi: 10.1038/s41598-024-74345-0.
This study focuses on the synthesis of zinc and copper oxide nanoparticles using green methods by plant extracts. The resulting metal oxides were analyzed using FT-IR spectroscopy, TGA, TEM, zeta potential and assessed for their efficacy as pigments based on properties such as Hydrogen Ion Concentration, Oil absorption, Moisture Content, Fineness of grinding, Bleeding, and loss on ignition. The results confirmed that the prepared ZnO and CuO nanoparticles exhibited the formation of nanoparticles in the range of 10-40 nm with potential as pigments. Two paint formulations incorporating these nanoparticles and silicon resins as binders were tested for physico-mechanical attributes, chemical resistance, heat resistance, and corrosion resistance of the dry paint films. The study found that the films containing the prepared oxides demonstrated excellent performance, with no damage or color alteration observed after exposure to temperatures up to 500 °C. Moreover, the paint films containing ZnO nanoparticles showed superior efficiency after a 500 h salt spray test compared to those with CuO nanoparticles. These findings suggest that the synthesized mixed oxide nanoparticles are promising candidates for heat-resistant pigment applications.
本研究聚焦于通过植物提取物采用绿色方法合成氧化锌和氧化铜纳米颗粒。使用傅里叶变换红外光谱仪、热重分析仪、透射电子显微镜、zeta电位对所得金属氧化物进行分析，并基于氢离子浓度、吸油量、水分含量、研磨细度、渗色和灼烧损失等特性评估其作为颜料的功效。结果证实，所制备的氧化锌和氧化铜纳米颗粒呈现出10 - 40纳米范围内的纳米颗粒形成，具有作为颜料的潜力。测试了两种将这些纳米颗粒与硅树脂作为粘合剂的涂料配方的干漆膜的物理机械性能、耐化学性、耐热性和耐腐蚀性。研究发现，含有所制备氧化物的漆膜表现出优异的性能，在高达500℃的温度下暴露后未观察到损坏或颜色变化。此外，与含有氧化铜纳米颗粒的漆膜相比，含有氧化锌纳米颗粒的漆膜在500小时盐雾试验后显示出更高的效率。这些发现表明，合成的混合氧化物纳米颗粒是耐热颜料应用的有前途的候选材料。
