| 氧化石墨烯改性ZnO/CeO2复合纳米材料的制备及其紫外屏蔽性能研究 |
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| 基金项目:辽宁省自然科学基金（20092181）；中央高校基本科研业务费专项基金弱光非线性光子学教育部重点实验室（南开大学）开放基金项目（OS18-2） |
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| 中文摘要:以六水硝酸锌、六水硝酸铈、氧化石墨烯为原料，采用溶胶凝胶法制备了氧化石墨烯（GO）改性ZnO/CeO2复合纳米紫外屏蔽剂。采用X射线衍射（XRD）、扫描电镜（SEM）、傅立叶变换红外光谱（FT-IR）、紫外可见分光光度计（UV-Vis）等测试手段对产物的结构、组成及形貌进行表征，研究了氧化铈与氧化锌摩尔比、GO投入量、屏蔽剂用量以及pH值对复合纳米材料紫外屏蔽性能的影响，探索了氧化石墨烯改性ZnO/CeO2复合纳米的最佳制备条件。结果表明：氧化石墨烯改性ZnO/CeO2复合纳米材料中GO、CeO2、ZnO的平均粒径分别为8.3、15.4、37.5 nm。当pH 6.0、氧化铈与氧化锌摩尔比为4∶1、GO投入量为2.0 g、屏蔽剂用量为0.06 g/L时，紫外屏蔽性能强弱顺序为：氧化石墨烯改性ZnO/CeO2复合纳米材料>GO>ZnO/CeO2复合纳米材料>CeO2>ZnO。 |
| 中文关键词:紫外屏蔽性能 氧化锌 氧化铈 氧化石墨烯 复合纳米材料 |
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| Synthesis of Graphene Oxide Modified ZnO/CeO2 Nanocomposites and Their UV shielding Performance |
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| Abstract:An outstanding UV shielding agent based on graphene oxide modified ZnO/CeO2 nanocomposites was prepared by sol-gel method using zinc nitrate hexahydrate，ceric nitrate hexahydrate and graphene oxide（GO） as raw materials.The structure，composition and morphology of the as prepared sample were characterized by X ray diffraction（XRD），scanning electron microscopy（SEM），Fourier transform infrared spectroscopy（FT-IR） and ultraviolet and?visible spectrophotometry（UV Vis）.The influences of molar ratio of cerium oxide to zinc oxide，mass of graphene oxide，amount of shielding agent loaded and pH value on the UV shielding performance of the GO/ZnO/CeO2 nanocomposites were investigated.The average sizes for GO，CeO2 and ZnO in the graphene oxide modified ZnO/CeO2 nanocomposites were 8.3，15.4 and 37.5 nm，respectively.The optimum conditions were as follows: pH value: 6.0，molar ratio of cerium oxide to zinc oxide: 4 ∶ 1，mass of graphene oxide: 2.0 g，amount of shielding agent loaded: 0.06 g/L.Under the optimal conditions，the sequence for UV shielding performances of the agents were as follows: graphene oxide modified ZnO/CeO2 nanocomposites>GO>ZnO/CeO2 nanocomposites>CeO2>ZnO. |
| Key Words:UV shielding performance ZnO CeO2 graphene oxide(GO) nanocomposite |
| 引用本文：邓雪莹，李丽华，张金生，吴限，马诚.氧化石墨烯改性ZnO/CeO2复合纳米材料的制备及其紫外屏蔽性能研究[J].分析测试学报,2019,38(1):102-106. |
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