氮掺杂石墨烯/氧化亚铜复合凝胶的制备与性能

Synthesis of Nitrogen-Doped Graphene/Cuprous Oxide Composite Hydrogels and Their Performance

为了拓展石墨烯凝胶材料在污水处理领域的应用,以氧化石墨烯与氢氧化铜为前驱物,氨水为氮源,葡萄糖为还原剂,利用一步水热法制备了氮掺杂石墨烯/氧化亚铜(NG/Cu_2O)复合凝胶材料。采用X射线衍射仪、扫描电子显微镜表征产物的微观形貌与结构,通过紫外-可见分光光度计测试NG/Cu_2O复合材料在不同的光照环境下对罗丹明B(RhB)染料所表现出的吸附降解性能。实验结果表明,与NG凝胶相比,NG/Cu_2O复合凝胶材料表现出更好的吸附与催化降解能力,且在紫外光的光照环境下对RhB染料的吸附降解性能最佳。

To expand the application of graphene hydrogel in waste water treatment,an efficient one-step hydrothermal method was developed for the synthesis of nitrogen-doped graphene/cuprous oxide（NG/Cu2O）composite hydrogel using graphene oxide and Cu（OH）2 as the precursors,ammonia as the nitrogen source,glucose as the reducing agent. Scanning electron microscopy and X-ray diffraction were conducted to characterize the morphology and structure of the composites. The adsorption/degradation properties forRhodamine B（Rh B）of NG/Cu2O composite hydrogel were evaluated by ultraviolet-visible spectrophotometer.The experimental results showed that compared with NG hydrogel,the NG/Cu2O composite hydrogel possessed better adsorption/degradation ability for Rh B,especially under UV light irradiation.