Nano scale zerovalent nickel: Green synthesis, characterization, and efficient removal of lead from aqueous solution

被引：3
|
作者：
Chandra, Ch [1 ]
Khan, Fahmida [1 ]
机构：
[1] Natl Inst Technol Raipur, Dept Chem, Raipur 492010, Chhattisgarh, India
来源：
INORGANIC AND NANO-METAL CHEMISTRY | 2020年 / 50卷 / 10期
关键词：
Annacardium occidentale; lead adsorption; nickel nanoparticles; multilayer; adsorption; testa; HEAVY-METAL IONS; MAGNETITE NANOPARTICLES; ADSORPTION; ADSORBENT; SORPTION; KERNELS; CR(VI); PB(II); TESTA; MODEL;
D O I：
10.1080/24701556.2020.1734822
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Lead is one of the toxic heavy metal pollutants and if present in water above its permissible limit can lead to various neurodevelopmental and cardiovascular disorders in human beings. The objective of the present work is removal lead ions from aqueous solution using novel nickel nanoparticles (AONi) prepared by green synthesis from testa extract of Annacardium occidentale which acts as an eco-friendly adsorbent. The physicochemical properties of AONi nanoparticles were characterized through UV-Visible spectroscopy, FTIR analysis, SEM-EDS, XRD, and HR-TEM analysis. The adsorption capacity of AONi nanoparticles and the effect of pH, adsorbent and adsorbate dosage, and contact time are studied by batch experiments and analyzed by Langmuir and Freundlich adsorption isotherm. The correlation coefficient, R-2 = 0.99 is in agreement with Freundlich's multilayer adsorption. The separation factor, R-L of Langmuir isotherm is 0.20, which also indicates favorable adsorption. Kinetic studies further confirm that the adsorption follows a pseudo-second-order mechanism.
引用
收藏
页码：1044 / 1052
页数：9
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