Simple and tailorable synthesis of silver nanoplates in gram quantities

Mravljak, Rok (author), Podgornik, Aleš (author)

Due to plasmonic and catalytic properties, silver nanoplates are of significant interest; therefore, their simple preparation in gram quantities is required. Preferably, the method is seedless, consists of few reagents, enables preparation of silver nanoplates with desired optical properties in high concentration, is scalable, and allows their long-term storage. The developed method is based on silver nitrate, sodium borohydride, polyvinylpyrrolidone, and H$_2$O$_2$ as the main reagents, while antifoam A204 is implemented to achieve better product quality on a larger scale. The effect of each component was evaluated and optimized. Solution volumes from 3 to 450 mL and concentrations of silver nanoplates from 0.88 to 4.8 g/L were tested. Their size was tailored from 25 nm to 8 μm simply by H$_2$O$_2$ addition, covering the entire visible plasmon spectra and beyond. They can be dried and spontaneously dispersed after at least one month of storage in the dark without any change in plasmonic properties. Their potential use in modern art was demonstrated by drying silver colloids on different surfaces in the presence of reagents or purified, resulting in a variety of colors but, more importantly, patterns of varying complexity, from simple multi-coffee-rings structures to dendritic forms and complex multilevel Sierpiński triangle fractals.

• Language: English
• Keywords: silver nanoplates, large-scale, seedless synthesis, high concentration, plasmonic properties, surface patterns, colloids, metal nanoparticles, nanoplates, silver, surface plasmon resonance
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Publication status: Published
• Publication version: Version of Record
• Year: 2023
• Number of pages: Str. 2760-2772
• Numbering: Vol. 8, iss. 2
• PID: 20.500.12556/RUL-144324
• UDC: 620.3:546.57
• ISSN on article: 2470-1343
• DOI: 10.1021/acsomega.2c07452
• COBISS.SI-ID: 137365251
• Publication date in RUL: 14.02.2023

Record is a part of a journal

• Title: ACS omega
• Shortened title: ACS omega
• Publisher: American Chemical Society
• ISSN: 2470-1343
• COBISS.SI-ID: 525873945

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: srebrne nanoploščice, veliko merilo, sinteza brez jeder, visoka koncentracija, plazmonske lastnosti, površinski vzorci

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: J7-2603
• Name: Učinkovitost bakteriofagov za zdravljenje ekstracelularnih in intracelularnih bakterijskih okužb implantatov

• Funder: ARRS - Slovenian Research Agency
• Project number: P1-0153
• Name: Raziskave in razvoj analiznih metod in postopkov