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Formation of Au –carbon nanoparticles by laser ablation under pressurized CO 2
Author(s) -
Mardis Mardiansyah,
Takada Noriharu,
Kanda Hideki,
Goto Motonobu
Publication year - 2018
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.2176
Subject(s) - transmission electron microscopy , nanoparticle , materials science , laser ablation , scanning electron microscope , wafer , laser , analytical chemistry (journal) , carbon fibers , spectroscopy , silicon , laser ablation synthesis in solution , energy dispersive x ray spectroscopy , nanotechnology , optoelectronics , optics , chemistry , composite material , x ray laser , laser power scaling , composite number , chromatography , physics , quantum mechanics
Pulsed laser ablation is known to be a promising method for synthesizing metal nanoparticles. Here, Au–carbon nanoparticles were synthesized by pulsed laser ablation under pressurized carbon dioxide. Au plate was ablated using a Nd:YAG laser with a wavelength of 532 nm and energy of 0.83 mJ in a high‐pressure chamber. The experiments were performed at temperatures and pressures of 21–25 °C and 7–15 MPa, corresponding to carbon dioxide densities of 0.75–0.89 g/cm 3 , respectively. The synthesized products were collected on a silicon wafer and analyzed using field emission scanning electron microscopy, transmission electron microscopy, and a scanning transmission electron microscopy system equipped with energy‐dispersive X‐ray spectroscopy. The results showed that the generated metal nanoparticles exhibited spherical and nanocluster structures. Au, C, and O were clearly found on the nanoparticle products.
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