【摘要】 Cr⁶⁺离子是重要的重金属污染物，会引起人体器官损伤。如何除去废水中的Cr⁶⁺离子是水体净化中需要面对的问题。磁性炭微球因具有高比表面积及磁性的特点，因此具有良好的吸附重金属及易与水体分离的性能。目前常用来制备磁性炭微球的方法有电弧法、离子束法、化学气相沉积法等，这些方法对制备环境要求高。以酚醛树脂为粘合剂，以乙炔黑、活性炭、碳纳米管和纳米石墨片为炭源，通过喷雾干燥为成型的方法制备出4种磁性炭微球，并通过XRD、拉曼光谱、BET等方法进行表征及对含Cr⁶⁺离子废水中进行吸附。结果表明：通过喷雾干燥法制备的磁性炭微球均有着较高的比表面积，并且对含Cr⁶⁺离子有着良好的吸附效果。其中，磁性炭纳米管微球（MS-CNT）具有最高的饱和吸附量为1.14×10⁵ mg/g,是一种理想吸附剂。更多还原

【Abstract】 Cr(VI) ion is an important heavy metal pollutant, which can cause organ damage. How to remove Cr(VI) ion from wastewater is a problem to be faced in water purification. Magnetic carbon microspheres have good adsorption performance of heavy metals and easy separation from water due to their high specific surface area and magnetic properties. At present, the commonly used methods to prepare magnetic carbon microspheres include arc method, ion beam method, chemical vapor deposition method and so on. These methods have high requirements on the preparation environment and are not suitable for industrialization. In this paper, phenolic resin was used as adhesive, acetylene black, activated carbon, carbon nanotubes and nano graphite sheets were used as carbon sources, and four kinds of magnetic carbon microspheres were prepared by spray drying as forming method. The magnetic carbon microspheres were characterized by XRD, Raman spectroscopy and BET and adsorbed in wastewater containing Cr(VI) ions. The results show that the magnetic carbon microspheres prepared by spray drying method have high specific surface area and good adsorption effect on Cr(VI) ions. The results show that the magnetic carbon microspheres prepared by spray drying method have high specific surface area and good adsorption effect on Cr(VI) ions. Magnetic carbon nanotube microspheres(MS-CNT) have the highest saturated adsorption capacity of 1.14×10~5 mg/g, which is an ideal adsorbent.更多还原