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- Title
Photochemical synthesis of ultrafine platinum nanocatalysts and their application in the catalytic reduction of nitrophenols.
- Authors
XIAN Liang; TIAN Xiaoxia; MA Jing; LI Wei
- Abstract
This study focuses on synthesizing ultrafine platinum nanoparticles (Pt/C60-E) by irradiating a mixture of C60 and K2[PtCl4] with ethylene glycol (EG) as the reducing agent. The process utilizes near-ultraviolet (UV) light at a wavelength of 395 nm, along with visible light at 450 and 650 nm. The composition and morphology of the Pt/C60 catalyst were investigated using characterization techniques including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy (HR-TEM). The results revealed a well-dispersed distribution of Pt nanoparticles on the C60 surface, with an average particle size of about 2.6 nm. In the catalytic reduction experiments of p-NP, the Pt/C60-E3 catalyst, prepared under near-ultraviolet irradiation (395 nm), exhibited superior catalytic activity, with a rate constant (k) of 0.12 min-1. Furthermore, in the catalyst cycling experiments, the catalysts remained highly active even after multiple cycles, demonstrating the effectiveness of the photochemical method in synthesizing precursor Pt catalysts.
- Subjects
CATALYTIC reduction; NANOPARTICLES; PLATINUM nanoparticles; FOURIER transform infrared spectroscopy; X-ray photoelectron spectroscopy; NITROPHENOLS
- Publication
Acta Scientiarum Naturalium Universitatis Sunyatseni / Zhongshan Daxue Xuebao, 2024, Vol 63, Issue 3, p137
- ISSN
2097-0137
- Publication type
Article
- DOI
10.13471/j.cnki.acta.snus.ZR20230041