Abstract Lead(II) methyl xanthate [Pb(S2COMe)2] was synthesized and characterized by single crystal X-ray crystallography. The molecular structure showed a distorted tetrahedral geometry around Pb(II) with each monomeric unit linked with another through Pb···S interactions. The compound was used to prepare hexadecylamine capped PbS (HDA-PbS) and oleylamine capped PbS (OLA-PbS) nanoparticles. The PbS nanoparticles were indexed to the cubic PbS crystalline phase with particle sizes of 4.5 – 34.5 nm. The estimated optical bandgaps obtained from the tauc’s plots were 3.47 and 3.30 eV for HDA-PbS and OLA-PbS, respectively, which are blue shifted in comparison to bulk PbS. The photodegradation of methylene blue using PbS as photocatalyst shows that HDA-PbS have the best degradation efficiency of 77.70% after 240 min. Graphical Abstract

中文翻译：

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双(O-甲基氢化二硫代碳)-Pb(II)的合成和晶体结构：复合物中PbS纳米颗粒的结构、光学和光催化研究

摘要 合成了甲基黄原酸铅（II）[Pb(S2COMe)2]，并通过单晶X射线晶体学表征。分子结构显示出围绕 Pb(II) 的扭曲四面体几何形状，每个单体单元通过 Pb…S 相互作用相互连接。该化合物用于制备十六胺封端的 PbS (HDA-PbS) 和油胺封端的 PbS (OLA-PbS) 纳米粒子。PbS 纳米颗粒被索引到立方 PbS 晶相，粒径为 4.5 – 34.5 nm。从 tauc 图中获得的估计光学带隙对于 HDA-PbS 和 OLA-PbS 分别为 3.47 和 3.30 eV，与块状 PbS 相比发生蓝移。以 PbS 为光催化剂对亚甲蓝的光降解表明，HDA-PbS 在 240 分钟后具有 77.70% 的最佳降解效率。图形概要