Abstract

The effect of an increase in the electron density in silver nanoparticles during their formation through photochemical reduction of Ag⁺ ions in the presence of oxalate has been discovered and substantiated. The effect causes a shift of the of localized surface plasmon resonance (SPR) band from 402 to 383 nm and a decrease in its width. The quantitative relationship between the band shift value and electron density has been revealed. The observed shift of 19 nm corresponds to an approximately 10% increase in the electron concentration in nanoparticles. The observed is possibly common for other metals and affects the performance of various catalytic reactions involving metals in the nanoscale state.

中文翻译：

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纳米银颗粒在脱气水溶液中的光化学形成过程中的电子状态

摘要

已经发现并证实了在草酸盐存在下通过光化学还原Ag ⁺离子在银纳米颗粒形成过程中电子密度增加的影响。该效应导致局部表面等离振子共振（SPR）谱带从402转移到383 nm，并且宽度减小。已经揭示了带移值和电子密度之间的定量关系。观察到的19 nm的位移对应于纳米粒子中电子浓度的大约10％的增加。观察到的可能是其他金属的常见现象，并且会影响涉及纳米级金属的各种催化反应的性能。