Revealing the Synthesis of Triangular Silver Nanoplates: A Study of the Photochemical Growth Mechanism around the pH and Trisodium Citrate Variations,Physica Status Solidi (B) - Basic Solid State Physics

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Revealing the Synthesis of Triangular Silver Nanoplates: A Study of the Photochemical Growth Mechanism around the pH and Trisodium Citrate Variations
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2021-09-04 , DOI: 10.1002/pssb.202100189
José Arcos-Pareja ₁ , Esteban D. Lasso ₂ , Carolina M. Ibarra-Barreno ₂ , Joselyn Benalcázar ₃ , Kevin Robalino ₂ , Alexis Debut ₄ , Sarah Briceño ₂ , Julio C. Chacón-Torres ₂

Affiliation

Triangular silver nanoplates (T-SNPs) are synthesized via a facile, low-cost photochemical process. It is proved that both the pH and the concentration of trisodium citrate (TSC) are the key factors to describe the mechanism for the photochemical growth and modulation of the extinction band along the formation of T-SNPs. A precise photoreduction growth mechanism of T-SNPs is proposed and confirmed by X-ray photoelectron spectroscopy (XPS) considering the face block theory and the localized surface plasmon resonance (LSPR) in T-SNPs revealing the optimal conditions for their growth to be at a neutral pH of 7, a concentration between 1.0 and 2.0 mm of TSC preferentially monodentate, and using a 520 nm excitation energy. These results exhibit important implications for the behavior of T-SNPs in a wide variety of plasmonic applications that can be further moved to controlled surface-enhanced biomedical applications.

中文翻译：

揭示三角形银纳米片的合成：围绕 pH 值和柠檬酸三钠变化的光化学生长机制研究

三角形银纳米片 (T-SNP) 是通过简便、低成本的光化学过程合成的。结果表明，柠檬酸三钠 (TSC) 的 pH 值和浓度是描述 T-SNP 形成过程中光化学生长和消光带调制机制的关键因素。考虑到面块理论和 T-SNP 中的局域表面等离子体共振 (LSPR) 揭示了其生长的最佳条件，X 射线光电子能谱 (XPS) 提出并证实了 T-SNP 的精确光还原生长机制中性 pH 值为 7，浓度介于 1.0 和 2.0 m m 之间TSC 优先单齿，并使用 520 nm 激发能量。这些结果对 T-SNP 在各种等离子体应用中的行为具有重要意义，这些应用可以进一步转移到受控表面增强生物医学应用。

更新日期：2021-09-04

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