Abstract 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 nanoparticles(zero-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 μmol/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-second-order, 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.

中文翻译：

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零价锡纳米粒子的一步合成和水中铅的潜在微波修复

摘要 纳米零价金属（nZVM）广泛用作吸附剂，用于水中重金属的修复。然而，纳米零价铁（nZVI）的缺点是稳定性低、钝化速度快、流动性有限。因此，本研究旨在合成稳定的零价锡纳米粒子（零价锡 NPS），无需任何表面保护，用于铅 (II) 的水修复。零价Sn NPS的尺寸为14-39 nm，具有高热稳定性。通过微波吸附技术，从该实验中获得的最大金属容量为 5300 μmol/g，在 pH 7 下 20 秒，动力学和吸附等温线研究得到了 Akaike 信息准则 (AIC) 的支持。动力学研究表明，零价 Sn NPS 正在经历伪二级，这证实吸附反应是化学吸附反应。还，