Formation of Au–carbon nanoparticles by laser ablation under pressurized CO2. Issue 2 (12th February 2018)

• Record Type: Journal Article
• Authors: Mardis, Mardiansyah; Wahyudiono, ; Takada, Noriharu; Kanda, Hideki; Goto, Motonobu
• Is Part Of: Asia-Pacific journal of chemical engineering. Volume 13:Issue 2(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-02-12
• Subjects: gold nanoparticles -- gold–carbon particles -- laser ablation -- pressurized CO2; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/apj.2176
• Languages: English
• ISSNs: 1932-2135

Abstract

Abstract: 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.