Structural Characterization and Catalytic Oxygen Release Performance of Platinum Nanoparticles Synthesized via Chemical and Plant‐Mediated Routes
JOURNAL OF CHEMISTRY, cilt.2026, sa.1, ss.1-18, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 2026 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1155/joch/2608009
- Dergi Adı: JOURNAL OF CHEMISTRY
- Derginin Tarandığı İndeksler: Academic Search Ultimate (EBSCO), Scopus, Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest), Science Citation Index Expanded (SCI-EXPANDED), Directory of Open Access Journals
- Sayfa Sayıları: ss.1-18
- Dokuz Eylül Üniversitesi Adresli: Evet
Özet
Platinum nanoparticles (PtNPs) were synthesized via both ethanol-based chemical reduction and plant-mediated green routes using Achillea millefolium and Echinacea purpurea extracts as reducing and stabilizing agents. In the chemical route, H2PtCl6·xH2O was reduced in ethanol in the presence of polyvinylpyrrolidone with different molecular weights to control nanoparticle stabilization and growth. The synthesized PtNPs were characterized by UV–vis spectroscopy, Fourier transform infrared (FTIR) spectroscopy, XX-ray diffraction (XRD), scanning electron microscopy (SEM), and dynamic light scattering (DLS). Structural analysis revealed face-centered-cubic Pt0 formation in all samples, while green synthesis produced smaller crystallite sizes with increased lattice strain compared to chemically synthesized nanoparticles. Catalytic performance was evaluated via calcium peroxide decomposition in phosphate-buffered saline, serving as a model oxygen generation system. Among all samples, A. millefolium–derived PtNPs exhibited the highest catalytic activity, attributed to the combined effects of smaller crystallite size, higher lattice distortion, and surface functionalization arising from the plant-mediated synthesis environment. These findings demonstrate a clear structure–property–activity relationship between synthesis route, surface chemistry, and catalytic oxygen evolution, highlighting the potential of plant-mediated approaches for designing efficient and sustainable platinum-based nanocatalysts.