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将高稳定性的MOF-808与BiOCl结合,采用简便的水热法制备出新型MOF-808/BiOCl复合异质结材料。以环丙沙星(CIP)为污染物,探究复合材料MOF-808/BiOCl对CIP的光催化性能。发现含有10% MOF-808的复合材料(MOF-808/BiOCl-10%)表现出最佳的光催化活性。在紫外光照射20 min内,MOF-808/BiOCl-10%对CIP的光催化降解效率高达94.7%。通过X射线粉末衍射、扫描电镜、红外光谱、荧光光谱、紫外可见漫反射光谱、光电流、电化学阻抗等表征技术来考察材料的物相组成、形貌以及光电化学性质。紫外可见漫反射光谱的结果表明,MOF-808/BiOCl-10%材料光吸收范围得到提高。同时进行了自由基捕获实验。基于以上实验数据,提出了MOF-808/BiOCl复合材料可能的光催化机理。 相似文献
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Accelerator mass spectrometry (AMS) measurement of 59Ni has been established at CIAE with the HI-13 tandem accelerator and the recently developed ΔE-Q3D detection system. 59Ni standard and commercial NiO samples were measured to check the performance of the ΔE-Q3D detection system on 59Ni isobar separation and suppression. An overall suppression factor of about 107 for the interfering isobar 59Co resulting in detection sensitivity as low as 3.8×10-13 atomic ratio (59Ni/Ni) has been obtained. Based on these techniques, the AMS measurement method of 59Ni with high sensitivity is developed. 相似文献
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In order to improve the accuracy of accelerator mass spectrometry (AMS) measurement for 182Hf/180Hf, a series of measurements have been taken in the AMS laboratory at the China Institute of Atomic Energy (CIAE). The major ones include the instantaneous monitoring of 180HfF5- current, testing the stability of transmission, the alternate measurements of an unknown sample and standard, and the origin identification and minimization of background 182W. The experimental details and the improvement in the measurement accuracy, as well as some useful suggestions for better satisfying the requirements of certain practical applications, are presented in this paper. 相似文献
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以Keggin型磷钼酸、1,3,5-均苯三甲酸和八水氯氧化锆为原料,通过一步原位溶剂热制备了复合型吸附剂,通过XRD、SEM、FT-IR和TGA等表征手段说明,将亲水性杂多酸固定在MOF-808金属有机骨架基体上,对水溶液中亚甲基蓝溶液的吸附能力得以提升。动力学实验表明,H3PMo12O40/MOF-808对亚甲基蓝的吸附符合准二级动力学模型,吸附等温线遵循Langmuir等温线模型,表明MB均匀吸附在H3PMo12O40/MOF-808表面。根据Langmuir模型,在pH值为8,T=303K,吸附剂吸附性能最好。热力学研究表明,吸附过程是一个自发的放热反应。此外,H3PMo12O40/MOF-808在五个连续循环实验中从其水溶液中吸附MB分子,表现出较好地可重复使用性。 相似文献
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