| 具有三维网状结构的石墨相氮化碳/还原氧化石墨烯/钯复合材料的合成及可见光催化性能 |
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| 引用本文： | 娄冬冬,张丽莎,王海风,陈志钢.具有三维网状结构的石墨相氮化碳/还原氧化石墨烯/钯复合材料的合成及可见光催化性能[J].材料导报,2017,31(20):1-5. |
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| 作者姓名： | 娄冬冬 张丽莎 王海风 陈志钢 |
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| 作者单位： | 1. 东华大学纤维材料改性国家重点实验室,上海,201620;2. 东华大学纤维材料改性国家重点实验室,上海201620;东华大学环境科学与工程学院,上海201620 |
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| 基金项目： | 国家自然科学基金(21477019);中央高校基本科研业务费专项资金;东华大学励志计划 |
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| 摘 要： | 石墨相氮化碳(g-C_3N_4)已经被认为是一种高效的非金属半导体光催化剂。为进一步优化其光催化性能,通过热解-水热两步法制备了三维网状结构的g-C_3N_4/还原氧化石墨烯(rGO)/钯纳米颗粒(Pd NPs)复合材料。该复合材料由大量超薄片组成,而且薄片上有大量直径约为10nm的Pd NPs。g-C_3N_4/rGO/Pd NPs复合材料展现了一个宽的可见光吸收(边~460nm),其在460~800nm波长范围内还有一个随波长增加的光吸收。经可见光(λ400nm)照射140 min后,g-C_3N_4/rGO/Pd NPs复合材料可降解90%罗丹明B(RhB)。此外,循环实验表明g-C_3N_4/rGO/Pd NPs复合材料具有良好的稳定性。因此,g-C_3N_4/rGO/Pd NPs复合材料有望成为一种高效稳定的光催化剂,在水污染处理领域具有潜在的应用价值。
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| 关 键 词： | 石墨相氮化碳 还原氧化石墨烯 钯纳米颗粒 光催化 可见光 |
Synthesis of Three-dimensional Network-structured g-C3N4/rGO/Pd Composites with Excellent Visible-light Photocatalytic Performances |
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| LOU Dongdong,ZHANG Lish,WANG Haifeng and CHEN Zhigang.Synthesis of Three-dimensional Network-structured g-C3N4/rGO/Pd Composites with Excellent Visible-light Photocatalytic Performances[J].Materials Review,2017,31(20):1-5. |
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| Authors: | LOU Dongdong ZHANG Lish WANG Haifeng and CHEN Zhigang |
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| Affiliation: | State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620;College of Environmental Science and Engineering, Donghua University, Shanghai 201620,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620 and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620 |
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| Abstract: | Graphitic carbon nitride (g-C3N4) has been considered as an efficient metal-free semiconductor photocataltyst.To further improve its photocatalytic activity,we have prepared the three-dimensional network-structured g-C3 N4/reduced graphene oxide (rGO)/palladium nanoparticles (Pd NPs) composites by the pyrolysis-hydrothermal two-step method.The composite consists of ultrathin sheets which are decorated with Pd NPs (diameter:～ 10 nm).g-C3N4/rGO/Pd NPs composite shows a broad absorption with an edge at ～460 nm and then an enhanced photoabsorption with the increase of wavelength (460-800 nm).The photocatalytic activity of g-C3N4/rGO/Pd NPs composites was measured by the degradation of RhB solution.Under the irradiation of visible-light (λ＞400 nm),g-C3N4/rGO/Pd NPs composites can degrade 90％ RhB in 140 min.In addition,the cycling experiment demonstrates that the composite possesses good photocatalytic stability.Therefore,g-C3N4/rGO/Pd NPs composites displays a potential as an efficient and stable photocatalyst for water-purification application. |
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| Keywords: | graphitic carbon nitride reduced graphene oxide palladium nanoparticles photocatalysis visible light |
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