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以医用纱布(medical gauze,MG)同时作为模板和还原剂,通过原位氧化还原反应,简便地制备了MG负载的MnO2纳米颗粒(MnO2 NPs/MG),并对其形貌、成分进行表征。结果表明,MnO2 NPs均匀地分散于MG纤维表面。结合MnO2纳米材料的吸附性能和MG复合材料的操作便捷性,将MnO2 NPs/MG进一步应用于亚甲蓝染料的去除。结果表明,在中性条件下,通过简单的浸泡搅拌,MnO2 NPs/MG对亚甲蓝的去除率可达85.09%,并且可以通过增大吸附材料用量与染料初始浓度的比例提高去除率。等温吸附和动力学研究证明,MnO2 NPs/MG对亚甲蓝的吸附符合Langmuir吸附等温模型和拟二级动力学模型。 相似文献
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以医用纱布(medical gauze,MG)同时作为模板和还原剂,通过原位氧化还原反应,简便地制备了MG负载的MnO2纳米颗粒(MnO2 NPs/MG),并对其形貌、成分进行表征。结果表明,MnO2 NPs均匀地分散于MG纤维表面。结合MnO2纳米材料的吸附性能和MG复合材料的操作便捷性,将MnO2 NPs/MG进一步应用于亚甲蓝染料的去除。结果表明,在中性条件下,通过简单的浸泡搅拌,MnO2 NPs/MG对亚甲蓝的去除率可达85.09%,并且可以通过增大吸附材料用量与染料初始浓度的比例提高去除率。等温吸附和动力学研究证明,MnO2 NPs/MG对亚甲蓝的吸附符合Langmuir吸附等温模型和拟二级动力学模型。 相似文献
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TiNi alloy, especially porous TiNi, a good biocompatible material, can be made by laser induced self-propagating high-temperature synthesis (SHS). A 40-W CO2 laser was used to ignite the powders of Ti and Ni, and TiNi intermetallic compound was synthesized by SHS in a reaction kettle of stainless steel. High-speed photography, X-ray diffraction, and scanning electron microscopy were used to investigate and analyze the reaction process, phase composing, and microstructure of the product, respectively. The influence factors on the reaction process and the product were discussed. The results indicate that laser induced SHS is an efficient, energy-saving method; The phase ingredient of the product consists of TiNi, Ti2Ni, and Ni3Ti. With the increase of the preparing pressure of the sample, the reacting rate decreases; With the increase of the laser power and the preheating temperature, the reacting rate increases. Under the condition of 30℃/min, the synthesis reaction had been carried out consistently and 相似文献
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多璧碳管/聚中性红修饰电极的制备及对鸟嘌呤和腺嘌呤的应用研究 总被引:1,自引:0,他引:1
结合纳米材料的电催化特性和中性红聚合物薄膜的分子识别能力, 以玻碳电极为基体制备了多壁碳管/聚中性红(MWNT/PNR)修饰电极, 并用表面扫描电镜和循环伏安法进行了表征. 实验表明, 该修饰电极对腺嘌呤(A)和鸟嘌呤(G)都表现出了良好的电催化性能. 在最佳条件下, 用示差脉冲伏安法对A和G进行了测定, 其氧化峰电流于A和G的浓度分别在0.01~4 μmol/L和0.01~8 μmol/L范围内呈良好的线性关系, 检测限均为5×10-9 mol/L (S/N=3). 该修饰电极可以用来同时测定DNA中的A和G. 相似文献
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