Rhenium/rhenium oxide nanoparticles production using femtosecond pulsed laser ablation in liquid

Abstract

IntroductionPulsed laser ablation (PLA) of solids is a very promising functional, powerful, and clean method for nanoparticle production [1]. NPs with controlled sizes, shapes, and concentrations can be obtained using PLA. PLA in liquid (PLAL) method becomes a facile and clean (free of contaminats) method to produce NPs [2] because this method can easily be used to produce NPs in a reservoir of ultrapure water, water surfactant mixtures or some other liquid materials [3]. Metallic NPs may have very broad area of applications as such copper [4] and silver [5] could be used as an antibacterial potency against E. coli. Especially, gold NPs were extensively used in very broad application area including catalysis, nanotechnology [6], cancer diagnostics [7], and biological applications [8]. Also, Au NPs are widely used in thin film applications [9,10] and in nonvolatile memory devices [11].In recent years, rhenium nanoparticles (NPs) have been used in several applications such as a tumour treating therapies and coating (plastics, metals, textiles) technologies as well as magnetic rhenium NPs, which have been used as a contrast agent and are produced by using chemical or physical methods. Rhenium containing NPs have been studied and reported for catalytic and sensor applications in literature [12,13]; platinum monolayer on iridium/rhenium alloy nanoparticles [14] may function as a core part of some core-shell structures for the oxygen reaction, rhenium-containing Polytetrafluoroethylene (PTFE) structures [15] as catalysts and ReO 3 @ SiO 2 , ReO 3 @ Ag, ReO 3 @ Au NPs for sensor applications [16]. There are a few methods reported in the literature for production of Re NPs, which are pulsed laser decomposition [17], reduction of some organometallic complexes [18] or colloidal and microemulsion synthesis in liquid environment [19], but, due to the author's knowledge, no study has yet been reported in the literature about the use of the fsPLAL method for production of Re NPs as well as ReO 3 . Rhenium-containing alloys and coatings have been used for high-temperature applications, while Re NPs have also been used to connect parts at lower temperatures [20], which reduces the melting point of alloys. In a recent study, amorphous Re x O y NPs were produced in tunable particle sizes

Fabrication of eco‐friendly superhydrophobic and superoleophilic PHB‐SiO2 bionanofiber membrane for gravity‐driven oil/water separation

“…In this study, Si pellets were placed in a container. Fs laser was focused using 11 cm F‐theta lens on Si pellets about 30 min in micromachining unit which is used as laser unit to control the machining parameters on targets 67 …”