期刊
出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10934529.2021.1987101
关键词
Piperazine; Chicago sky blue dye; adsorption; adipic acid; terephthalic acid
资金
- Ministry of Higher Education (MOHE), Malaysia [FP033-2019]
- Higher Education Commission of Pakistan
This study synthesized Zn2+ decorated piperazine-based metal-organic frameworks and studied their adsorption behavior towards the dye Chicago sky blue, achieving high removal rates under optimized conditions. The synthesized adsorbents AP-Zn-MOF and TP-Zn-MOF followed a pseudo-second-order rate model, with CSB adsorption showing multilayer adsorption behavior.
This paper describes the synthesis and characterization of Zn2+ decorated (adipic and terephthalic acid as linkers) piperazine-based metal-organic framework (P-MOFs) and their extraction behavior toward the Chicago sky blue (CSB) dye. The formation of Zn2+-decorated P-MOFs was confirmed by FT-IR spectroscopy, energy-dispersive spectroscopy, X-ray diffraction, BET surface area analysis and TGA. Adsorption behavior of the synthesized P-MOFs was explored through solid-phase adsorption (batch method) prior to UV-Vis spectrophotometric determination. Adsorption parameters, including adsorbent dosage, pH of solution, dye concentration, and time, were optimized. Excellent percentage removal of 94% and 95% for AP-Zn-MOF and TP-Zn-MOF, respectively, was achieved at pH 7.5. Kinetics studies indicated that the synthesized adsorbents AP-Zn-MOF and TP-Zn-MOF followed the pseudo-second-order rate model with R-2 value 0.9989. The Freundlich isotherm with high R-2 value as compared to Langmuir isotherm indicated that CSB adsorption for the synthesized MOFs follows multilayer adsorption.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据