罗丹明B
材料科学
吸附
朗缪尔吸附模型
金属有机骨架
化学工程
单层
多孔性
兴奋剂
金属
水溶液中的金属离子
朗缪尔
比表面积
罗丹明
无机化学
纳米技术
催化作用
有机化学
复合材料
化学
光催化
冶金
工程类
物理
荧光
量子力学
光电子学
作者
Mamona Nazir,Muhammad Sohail Bashir,Muhammad Jamshaid,Aqsa Anum,Tayyaba Najam,Khurram Shahzad,Muhammad Imran,Syed Shoaib Ahmad Shah,Aziz ur Rehman
标识
DOI:10.1016/j.surfin.2021.101261
摘要
Metal-organic frameworks (MOFs) are newly introduced category of porous compounds reflected as proficient and economic to exclude organic dyes from water. In the present work, a metal doping strategy in MOFs has been introduced to enhance the efficiency of porous MOFs for adsorption of environmentally detrimental rhodamine B (Rh-B). The porous ZIF-67 and metal-doped MOFs ([email protected]) having Fe metal composition 1%, 3% and 5% were fabricated by in situ doping strategy during a simple solvothermal synthesis of ZIF-67. The spectroscopic characterization showed that limited metal-doping did not affect the characteristic features of MOFs like structural topology, porosity and surface area. The highest observed adsorption amount of [email protected] (5%) calculated with Langmuir model was 135.14 mg. g−1, considerably higher as compared to pristine ZIF-67 (85.69 mg. g−1) and other synthesized MOFs. The adsorption experiments data was well fitted by Langmuir model (R2 = 0.998) clarified that the adsorption process of Rh-B was monolayer and specified a stronger electrostatic interaction between Rh-B and porous [email protected] with 5% Fe, which was reliable with the observation from the effects of pH and ionic strength. The results showed that 47.71, 64.52 and 79.92% of rhodamine B dye removed by [email protected] (1%), [email protected] (3%) and [email protected] (5%) respectively with 240 minutes contact time. The recycling experiments also disclosed high stability of the Fe-doped MOFs. Up to 92% adsorption efficiency was examined after four regeneration cycles. All of the outcomes shown a pronounced prospective of the synthesized [email protected] nanocomposite in water treatment/purification in the industry.
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