Size and Strain of Zinc Sulfide Nanoparticles Altered by Interaction with Organic Molecules
Size and Strain of Zinc Sulfide Nanoparticles Altered by Interaction with Organic Molecules
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硫化锌纳米颗粒的尺寸和应变因与有机分子的相互作用而改变
DOI：
10.1021/acs.est.2c05268
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发表时间：
2022
影响因子：
11.4
通讯作者：
Borschneck, Daniel
中科院分区：
文献类型：
--
作者：
Le Bars, Maureen;Levard, Clément;Legros, Samuel;Vidal, Vladimir;Fernandez-Martinez, Alejandro;Michel, F. Marc;Thill, Antoine;Prelot, Benedicte;Dublet-Adli, Gabrielle;Borschneck, Daniel
纳米硫化锌（nano-ZnS）具有尺寸依赖性和可调的物理和化学性质，使其可用于各种技术应用。例如，结构变化，特别是由应变引起的结构变化，在尺寸< 5 nm的纳米ZnS中是明显的，该尺寸范围是在环境中形成的偶然纳米ZnS的典型尺寸范围。以前的研究已经表明了天然有机物如何影响纳米ZnS的物理性质，但主要集中在它们的聚集状态。然而，具体的有机分子和类型的功能基团，是最重要的控制纳米ZnS的大小和应变仍然不清楚。本研究探讨了在丝氨酸、半胱氨酸、谷胱甘肽、组氨酸和乙酸盐存在下合成的纳米ZnS的尺寸依赖性菌株。用同步辐射全散射对分布函数分析确定了平均晶粒尺寸和应变。在测试的不同的有机分子中，那些含有硫醇基团的分子被证明是最强烈地影响颗粒尺寸和尺寸引起的应变时，在合成过程中添加，但显着减少了颗粒应变时，添加到所形成的纳米ZnS。同样的效果是有用的，以了解的性质和行为的天然纳米ZnS形成的微生物活性的产品，例如，在还原环境中，或偶然的纳米ZnS中形成的有机废物。
Nanosized zinc sulfides (nano-ZnS) have size-dependent and tunable physical and chemical properties that make them useful for a variety of technological applications. For example, structural changes, especially caused by strain, are pronounced in nano-ZnS < 5 nm in size, the size range typical of incidental nano-ZnS that form in the environment. Previous research has shown how natural organic matter impacts the physical properties of nano-ZnS but was mostly focused on their aggregation state. However, the specific organic molecules and the type of functional groups that are most important for controlling the nano-ZnS size and strain remain unclear. This study examined the size-dependent strain of nano-ZnS synthesized in the presence of serine, cysteine, glutathione, histidine, and acetate. Synchrotron total scattering pair distribution function analysis was used to determine the average crystallite size and strain. Among the different organic molecules tested, those containing a thiol group were shown to affect the particle size and size-induced strain most strongly when added during synthesis but significantly reduced the particle strain when added to as-formed nano-ZnS. The same effects are useful to understand the properties and behavior of natural nano-ZnS formed as products of microbial activity, for example, in reducing environments, or of incidental nano-ZnS formed in organic wastes.