水热法制备纳米镍及光催化降解亚甲基蓝的性能研究
首发时间:2020-04-15
摘要:采用液相还原法在一定的温度下用次亚磷酸钠还原乙酸镍水溶液,再用D-L酒石酸作为表面活性剂制备Ni纳米材料,通过X射线衍射仪(XRD)、场发射扫描电镜(FESEM)和紫外-可见分光光度计(UV-vis)对样品的成分、结构、微观形貌及光催化性能进行了表征,研究表明所制备的 Ni纳米材料纯度高且无晶态杂质、形貌为分散均匀的粒径约为 100 nm-500 nm 的球状。利用氙灯光源(HSF-F300)模拟太阳光,对Ni纳米材料降解亚甲基蓝的光催化性能进行了测试,说明Ni纳米材料具有高的催化活性,可提高光催化速度与降解率,作为光催化方法的催化剂,同时可利用Ni的磁性能对催化剂进行回收,无二次污染问题。
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Preparation of Nano Nickel by Hydrothermal Method and Study on Photocatalytic Degradation of Methylene Blue
Abstract:The liquid phase reduction method was used to reduce the aqueous solution of nickel acetate with sodium hypophosphite at a certain temperature. Then the Ni nanomaterials were prepared using d-l tartaric acid as a surfactant. The composition, structure, microstructure and photocatalytic properties of the samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and ultraviolet-visible spectrophotometer (UV-vis). The results showed that the prepared Ni nanomaterials had high purity, no crystalline impurities, and the morphology was an evenly dispersed spherical particle size of about 100 nm-500 nm. The photocatalytic performance of Ni nanomaterials for the degradation of methylene blue was tested by using xenon lamplight source (HSF-F300) to simulate sunlight. It indicates that Ni nanomaterials have high catalytic activity, can improve photocatalytic speed and degradation rate, and can be used as catalysts for photocatalytic methods. At the same time, the magnetic property of Ni can be used to recover the catalyst without secondary pollution.
Keywords: Ni nanomaterials, photocatalysis, Environmental Pollution
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水热法制备纳米镍及光催化降解亚甲基蓝的性能研究
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