Yu Junying, Hu Tianjiao, Du Ci, Zhang Ye, Chu Zengyong, Li Yihe, Cao Jing
College of Chemistry, Xiangtan University Xiangtan Hunan 411105 China
College of Liberal Arts and Science, National University of Defense Technology Changsha 410073 China
RSC Adv. 2020 Jul 2;10(42):25200-25208. doi: 10.1039/d0ra01938k. eCollection 2020 Jun 29.
Boron carbonitride (BCN) nanofibers with rapid and efficient adsorption performance were prepared by electrospinning technology. TEM, XRD, XPS and N adsorption-desorption isotherms were performed to study the microstructure of the nanofibers. The results showed that the BCN fibers synthesized at 1000 °C (BCN-1000) have good crystallinity and high specific surface areas (403 m g). BCN-1000 nanofibers adsorb 70% of amino black 10B (AB-10B) within 10 minutes and reach adsorption equilibrium within 60 minutes. Compared with previous reports, it is found that the adsorption rate of BCN-1000 nanofibers to amino black (AB-10B) is much higher than that of other adsorbents. And BCN nanofibers exhibit a large adsorption capacity (625 mg g). In addition, the process of AB-10B adsorption on BCN nanofibers was systematically investigated, which was in accordance with the pseudo-second-order kinetics model and Langmuir isotherm model.
采用静电纺丝技术制备了具有快速高效吸附性能的硼碳氮化物（BCN）纳米纤维。通过透射电子显微镜（TEM）、X射线衍射（XRD）、X射线光电子能谱（XPS）和氮气吸附-脱附等温线对纳米纤维的微观结构进行了研究。结果表明，在1000℃合成的BCN纤维（BCN-1000）具有良好的结晶度和高比表面积（403 m²/g）。BCN-1000纳米纤维在10分钟内吸附70%的氨基黑10B（AB-10B），并在60分钟内达到吸附平衡。与先前的报道相比，发现BCN-1000纳米纤维对氨基黑（AB-10B）的吸附速率远高于其他吸附剂。并且BCN纳米纤维表现出较大的吸附容量（625 mg/g）。此外，系统研究了AB-10B在BCN纳米纤维上的吸附过程，该过程符合准二级动力学模型和朗缪尔等温线模型。
