Izvorni znanstveni članak
https://doi.org/10.5599/jese.3224
Integrated in situ RGB colorimetry and redox potential monitoring as a strategy for controlled synthesis of platinum nanostructures
Vladimir E. Guterman
; Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia and Prometheus R&D LLC, 4g/36 Zhmaylova St., Rostov-on-Don 344091, Russia
*
Kirill Paperzh
orcid.org/0000-0003-4878-9728
; Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia and Prometheus R&D LLC, 4g/36 Zhmaylova St., Rostov-on-Don 344091, Russia
Elvira Zaitseva
; Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia and Federal Research Center “The Southern Scientific Center of the Russian Academy of Sciences” (SSC RAS), Federal State Budgetary Institution of Science, 41 Chekhova St., Rostov-on-Don 344006, Russia
Alina Khudoley
; Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia
Elena Vetrova
orcid.org/0000-0002-2042-7963
; Research Institute of Physical Organic Chemistry, Southern Federal University, 194/2 Stachki St., Rostov-on-Don 344090, Russia
Alina Nevelskaya
; Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia and Federal Research Center “The Southern Scientific Center of the Russian Academy of Sciences” (SSC RAS), Federal State Budgetary Institution of Science, 41 Chekhova St., Rostov-on-Don 344006, Russia
Anatoly Metelitsa
; Research Institute of Physical Organic Chemistry, Southern Federal University, 194/2 Stachki St., Rostov-on-Don 344090, Russia
Ilya Pankov
; Research Institute of Physical Organic Chemistry, Southern Federal University, 194/2 Stachki St., Rostov-on-Don 344090, Russia
Maria Danilenko
; Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia
Alexey Nikulin
; Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia and Federal Research Center “The Southern Scientific Center of the Russian Academy of Sciences” (SSC RAS), Federal State Budgetary Institution of Science, 41 Chekhova St., Rostov-on-Don 344006, Russia
* Dopisni autor.
Sažetak
Controlling the kinetics of liquid phase synthesis is essential to elucidate transformation mechanisms and tailoring the properties of precious metal nanoparticles (NPs) and nanostructured materials. This study examines the formation kinetics of Pt NPs and supported Pt/C materials via the reduction of H2PtCl6 using formic (FA), citric (CA), and ascorbic (AA) acids. It also analyzes the structural, morphological, and electrochemical properties of the resulting materials. A key innovation is the validation of a novel approach that complements standard methods by combining RGB colorimetry with in-situ monitoring of the reaction medium's redox potential, specifically, open-circuit potential (OCP). This inexpensive technique provides data with accuracy and reliability comparable to established methods such as UV–vis spectroscopy, etc. The research identified distinct kinetic features of the Pt(IV) → Pt(0) transformation for each acid. Significant kinetic differences were observed, with NPs formation time decreasing in the order: FA > CA >> AA. Conversely, the electrochemically active surface area and catalytic activity for oxygen electroreduction increased in the order: AA
Ključne riječi
Platinum nanoparticles; platinum-carbon nanocomposite; liquid phase synthesis; carboxylic acids effects; colouring changes; open circuit potential measurements; oxygen reduction reaction
Hrčak ID:
346195
URI
Datum izdavanja:
17.3.2026.
Posjeta: 39 *