摘要
以L-天门冬氨酸(L-Asp)为配体和结构导向剂,采用乙二醇(EG)辅助的溶剂热法制备了尺寸均匀的、由纳米线自组装的CeVO_(4)空心球。CeVO_(4)空心球可作为吸附剂去除水溶液中的部分有机染料,尤其对刚果红(CR)染料具有良好的去除率。动力学和热力学吸附研究证实,CR在CeVO_(4)空心球上的吸附符合准二级动力学和Langmuir等温线吸附模型。经过4次循环吸附后,CeVO_(4)空心球对CR的去除率仍可达78.03%,表明CeVO_(4)吸附剂具有良好的化学稳定性和长效性。CR分子在CeVO_(4)空心球上的吸附是物理吸附和氢键协同作用的结果。
Uniform nanowire-assembled CeVO_(4) hollow microspheres were fabricated by a simple ethylene glycol(EG)-assisted solvothermal route,in which L-aspartic acid(L-Asp)was adopted as a functional agent and structure director.The as-prepared CeVO_(4) sample was evaluated as an adsorbent for the removal of organic dyes from aqueous solutions,especially exhibiting excellent removal rate towards the Congo red(CR)dye.The kinetics and thermodynamic data confirmed that the adsorption of CR onto CeVO_(4) microspheres was well fitted to the pseudo-secondorder kinetics and Langmuir isotherm models.Moreover,a removal rate of 78.03%was maintained after four cycles,indicating good chemical stability and durability of the CeVO_(4) adsorbent.The results suggest that the adsorption of CR molecules on CeVO_(4) is a result of the synergistic effects of physical adsorption and hydrogen bonding.
作者
蒋琨
薛玉彤
刘科麟
王淼
孙同明
汤艳峰
JIANG Kun;XUE Yutong;LIU Kelin;WANG Miao;SUN Tongming;TANG Yanfeng(School of Chemistry and Chemical Engineering,Nantong University,Nantong,Jiangsu 226019,China;College of Chemistry,Chemical Engineering and Materials Science,Taizhou University,Taizhou,Jiangsu 225300,China)
出处
《无机化学学报》
北大核心
2025年第11期2229-2236,共8页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.22075152)
江苏省大学生创新训练项目
南通大学大型仪器设备开放基金(No.KFJN2540,KFJN2547)资助
