| 马玉洁,崔立峰.TiN-TiC复合材料的制备及其吸附性能[J].有色金属材料与工程,2019,40(4):1-5. |
| TiN-TiC复合材料的制备及其吸附性能 |
| Preparetion and Adsorption Capability of TiN-TiC Composite |
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| DOI：10.13258/j.cnki.nmme.2019.04.01 |
| 中文关键词: TiN-TiC Cr（VI） 吸附 |
| 英文关键词:TiN-TiC Cr(VI) adsorption |
| 基金项目:国家自然科学基金资助项目（NO.51671136）；上海市国际技术合作项目（NO.17520710300） |
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| 中文摘要: |
| 采用溶胶-凝胶法制备了具有优良吸附性能的TiN-TiC复合材料。采用X射线衍射仪，热重分析仪，扫描电子显微镜，N2吸附-脱附仪和元素分析仪对该复合材料进行表征。结果发现，TiN-TiC复合材料具有介孔结构，比表面积为144.9 m2·g-1，平均孔径为7.44 nm。基于以上特性，研究了TiN-TiC复合材料对水中Cr（VI）的吸附能力。结果表明，在吸附温度为30℃、吸附时间为240 min、初始Cr（VI）质量浓度为100 mg·L-1、吸附剂投加量0.34 g·L-1的条件下，TiN-TiC复合材料对Cr（VI）的吸附量为284.45 mg·g-1。研究了相应的准一级、准二级动力学方程，结果表明，此复合材料对Cr（VI）的吸附动力学数据与准二级动力学方程有更好的相关性。 |
| 英文摘要: |
| TiN-TiC composite with excellent adsorption was prepared by sol-gel method. X-ray diffractometer, thermos gravimetric, scanning electron microscope, nitrogen absorption-desorption and elemental analyzer were employed to characterize the composite. It is found that TiN-TiC composite possesses mesostructure with a high specific surface area of 144.9 m2·g-1 and an average pore size of 7.44 nm. Due to the characteristics, the adsorption capacity of TiN-TiC composite for Cr(VI) in waste water was studied. The results show that the adsorption capacity of TiN-TiC composites for Cr(VI) was 284.45 mg·g-1 under the conditions of adsorption temperature of 30℃, adsorption time of 240 min, initial Cr(VI) concentration of 100 mg·L-1 and adsorbent dosage 0.34 g·L-1. The quasi first-order and quasi second-order kinetic equations were investigated. The results indicate that the adsorption kinetics data of the composite for Cr (VI) are better correlated with the quasi-second-order kinetics equation. |
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