Reactive deposition of Pt single-atoms on g-C3N4: effect of Pt-precursors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73632850" target="_blank" >RIV/61989592:15640/25:73632850 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2025/nr/d5nr03212a" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2025/nr/d5nr03212a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d5nr03212a" target="_blank" >10.1039/d5nr03212a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reactive deposition of Pt single-atoms on g-C3N4: effect of Pt-precursors

Popis výsledku v původním jazyce

Anchoring Pt single atoms (SAs) as co-catalysts on g-C3N4 has emerged as a promising approach to enhance the hydrogen production performance of this photocatalytic system. Particularly, by so-called reactive deposition, a maximum hydrogen evolution reaction performance can be achieved using a minimum amount of Pt loading. In this study, we explore the effects of different platinum (Pt) precursors on the reactive deposition of SAs onto g-C3N4, aiming to optimize the performance in photocatalytic hydrogen production. By examining a variety of Pt precursor types, we highlight critical parameters influencing deposition, including precursor charge, solution pH, ionic strength, and ligand properties. Our results reveal that precursors bearing anionic charges are distinctly more effective than cationic precursors for depositing highly active Pt SAs. Crucially, we find that the surface deposition reaction strongly depends on the ligand involved, with chloride-based complexes enabling more efficient Pt attachment compared to bromide-based complexes. Notably, variations in the oxidation state of platinum (Pt4+versus Pt2+) did not significantly influence deposition outcomes. Among all precursors studied, (NH4)2[PtCl6] achieved the highest catalytic activity, with optimal Pt loading (similar to 0.026 wt%) and superior hydrogen evolution rates surpassing the widely utilized H2[PtCl6] precursor. Furthermore, adjustments to solution conditions, such as significant pH changes due to increased ionic strength, were found to negatively impact deposition and catalytic effectiveness. These insights underscore the importance of precursor selection and solution chemistry control, providing a robust basis for the development of efficient and cost-effective single-atom photocatalysts formed by adsorption-reaction treatments.

Název v anglickém jazyce

Reactive deposition of Pt single-atoms on g-C3N4: effect of Pt-precursors

Popis výsledku anglicky

Anchoring Pt single atoms (SAs) as co-catalysts on g-C3N4 has emerged as a promising approach to enhance the hydrogen production performance of this photocatalytic system. Particularly, by so-called reactive deposition, a maximum hydrogen evolution reaction performance can be achieved using a minimum amount of Pt loading. In this study, we explore the effects of different platinum (Pt) precursors on the reactive deposition of SAs onto g-C3N4, aiming to optimize the performance in photocatalytic hydrogen production. By examining a variety of Pt precursor types, we highlight critical parameters influencing deposition, including precursor charge, solution pH, ionic strength, and ligand properties. Our results reveal that precursors bearing anionic charges are distinctly more effective than cationic precursors for depositing highly active Pt SAs. Crucially, we find that the surface deposition reaction strongly depends on the ligand involved, with chloride-based complexes enabling more efficient Pt attachment compared to bromide-based complexes. Notably, variations in the oxidation state of platinum (Pt4+versus Pt2+) did not significantly influence deposition outcomes. Among all precursors studied, (NH4)2[PtCl6] achieved the highest catalytic activity, with optimal Pt loading (similar to 0.026 wt%) and superior hydrogen evolution rates surpassing the widely utilized H2[PtCl6] precursor. Furthermore, adjustments to solution conditions, such as significant pH changes due to increased ionic strength, were found to negatively impact deposition and catalytic effectiveness. These insights underscore the importance of precursor selection and solution chemistry control, providing a robust basis for the development of efficient and cost-effective single-atom photocatalysts formed by adsorption-reaction treatments.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nanoscale

ISSN

2040-3364

e-ISSN

2040-3372

Svazek periodika

17

Číslo periodika v rámci svazku

41

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

23940-23947

Kód UT WoS článku

001588194300001

EID výsledku v databázi Scopus

2-s2.0-105018720929