Abstract In this research, we aimed to study the photocatalytic behavior of metal-polymer nanocomposite materials. Au/ZnO nanoparticles were synthesized via co-precipitation and then incorporated into the cellulose acetate using a phase inversion process to fabricate nanocomposite polymers. Scanning/transmission electron micrographs showed semi-rod shape prismatic ZnO nanostructures with gold nanoparticles on the tip. Crystal structure and chemical state of Au/ZnO nanoparticles were analyzed using X-ray diffraction and X-ray spectroscopy, respectively. Electron microscopy observations showed that the synthesized cellulose acetate-0.5 wt.% Au/ZnO nanocomposite had porosity of 82.5 vol.% which was higher than the pure cellulose acetate with 76.8 vol.% porosity. Wettability test showed that the synthesized nanocomposites had a water contact angle of 72 ± 1° which was higher than that of the pure cellulose acetate with a contact angle of 61 ± 4°, indicating the hydrophobicity of the pure cellulose acetate was improved by the presence of 0.5 wt.% Au/ZnO nanoparticles. Finally, the photocatalytic activity of the synthesized nanocomposite was measured by ‘Eosin Y’ removal from the wastewater and it was seen that the cellulose acetate-0.5 wt.% Au/ZnO nanocomposite degraded 20 ppm Eosin Y after 180 min, while no photocatalytic activity was seen for the pure cellulose acetate.

中文翻译：

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高度多孔、灵活且坚固的醋酸纤维素/Au/ZnO 作为混合光催化剂

摘要 本研究旨在研究金属-聚合物纳米复合材料的光催化行为。Au/ZnO 纳米粒子通过共沉淀合成，然后使用相转化工艺掺入醋酸纤维素中以制造纳米复合聚合物。扫描/透射电子显微照片显示半棒状棱柱状 ZnO 纳米结构，尖端带有金纳米颗粒。分别使用 X 射线衍射和 X 射线光谱分析了 Au/ZnO 纳米粒子的晶体结构和化学状态。电子显微镜观察表明，合成的醋酸纤维素-0.5 wt.% Au/ZnO 纳米复合材料的孔隙率为 82.5 vol.%，高于纯醋酸纤维素的 76.8 vol.% 孔隙率。润湿性测试表明，合成的纳米复合材料的水接触角为 72±1°，高于纯醋酸纤维素的接触角 61±4°，表明纯醋酸纤维素的疏水性因存在而得到改善。 0.5 wt.% Au/ZnO 纳米颗粒。最后，通过从废水中去除“曙红Y”来测量合成纳米复合材料的光催化活性，可以看出醋酸纤维素-0.5 wt.% Au/ZnO 纳米复合材料在 180 分钟后降解了 20 ppm 曙红​​ Y，而没有光催化活性可见纯醋酸纤维素。