ZnO@C纳米复合材料的制备及其光催化活性增强的研究
首发时间:2013-10-28
摘要:本文以葡萄糖溶液作为碳元素的原材料,通过混合煅烧法成功制备了ZnO@C纳米复合材料;并借助透射电子显微镜和紫外可见分光光度计等仪器对其形貌及光催化降解性能进行了系统的表征与探讨。经过60 min的紫外光催化降解染料罗丹明B,对比各样品的降解率,可知当葡萄糖的浓度为0.25 M时制得的ZnO@C纳米复合材料光催化活性最好,较纯ZnO的降解率提高了近33%。说明混合煅烧法能有效的实现纳米氧化锌颗粒与碳的复合并极大提高其光催化活性,在环境治理方面表现出良好的应用前景。
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Synthesis of ZnO@C nanocomposite with great enhancement for photocatalytic degradation
Abstract:ZnO@C nanocomposite was synthesized by mixed calcination method using glucose solution as the carbon precursor solution, the morphological and structural properties were characterized by transmission electron microscope, and the photocatalytic degradation properties were measured by UV-Vis diffuse reflectance spectra. Compared to the obtained samples, ZnO@C (0.25 M) displayed the highest efficiency for the photocatalytic degradation of rhodamine B (RhB) under ultraviolet light irradiation (λ=254 nm), increased by nearly 33% to pure ZnO-nanoparticals. This result indicated that mixed calcination method could be employed to implement the nano-composite of carbon and ZnO-nanoparticals, the increased photocatalytic activities revealed that introduce of carbon to metal nanoparticles opens possibilities to provide some new insight into the design of highly active photocatalyst for environmental governance applications.
Keywords: Material science;Photocatalysis Carbon Nanocomposite
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