Journal
MATERIALS RESEARCH BULLETIN
Volume 134, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2020.111090
Keywords
Zero-valent Sn nanoparticles; Adsorption; Water remediation; Microwave irradiation; Lead (II) ions
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The study successfully synthesized stable zero-valent tin nanoparticles with high thermal stability for water remediation, showing good adsorption performance. The adsorption process followed the Freundlich model, confirming the formation of multi-layer Pb(II) on the nano sorbent surface.
Nano zero-valent metals (nZVM) widely used as an adsorbent for heavy metal remediation from water. However, the disadvantages of nano zero-valent iron (nZVI) are low stability, rapid passivation, and limited mobility. Therefore, the present study aimed to synthesize stable zero-valent Sn nanopatticles(zem-valent Sn NPS) without any surface protection for water remediation of lead (II). The size of zero-valent Sn NPS were14-39 nm, with high thermal stability. The maximum metal capacity obtained from this experiment was 5300 mu mol/g at 20 s under pH 7 via microwave adsorption technique, the kinetic and adsorption isotherm study supported with the Akaike Information Criterion (AIC). Kinetic study shows that zero-valent Sn NPS are undergoing pseudo-secondorder, which confirms that the adsorption reaction is a chemisorption reaction. Also, adsorption isotherm data show that the adsorption process obeys the Freundlich model, which confirms the formation of a multilayer of Pb(II) over the nano sorbent surface.
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