###### Abstract  
We have applied spark ablation technology for producing nanoparticles from platinum ingots (purity of 99.97 wt. %) as a feed material by using air as a carrier gas. A maximum production rate of about 400 mg/h was achieved with an energy per pulse of 0.5 J and a pulse repetition rate of 250 Hz. The synthesized nanomaterial, composed of an amorphous platinum oxide PPO (83 wt. %) and a crystalline metallic platinum (17 wt. %), was used for formulating functional colloidal ink. Annealing of the deposited ink at 750 \({}^{\circ}\)C resulted in the formation of a polycrystalline material comprising 99.7 wt. % of platinum. To demonstrate the possibility of application of the formulated lattice methode electronics, we have patterned conductive lines and microheaters on alumina substrates and 20 \(\mu\)m thick low-temperature co-fired ceramic (LTCC) membranes with the use of aerosol jet printing technology. The power consumption of microheaters fabricated on LTCC membranes was found to be about 140 mW at a temperature of the hot part of 500 \({}^{\circ}\)C, thus allowing one to consider these structures as promising micro-hotplates for metal oxide semiconductor (MOS) gas sensors. The catalytic activity of the synthesized nanoparticles was demonstrated by measuring the resistance transients of the non-sintered microheaters upon exposure to 2500 ppm of hydrogen. s 2021 11 526 2021  
the most developed methods for the chemical synthesis of metal nanoparticles is the polyol process, which allows for the production of nanoparticles (e.g., Ag, Au, Pt and Pd) with a tailored size and shape in a size range below 10 nm [18]. In this process, the polyol serves both as a solvent and as a reducing agent. The supported platinum catalysts can be fabricated by using tetraammineplatinum(II) nitrate Pt(NH\({}_{3}\))\({}_{4}\)(NO\({}_{3}\))\({}_{2}\) as a precursor. In this case, the formation of platinum nanoparticles is carried out by incipient wetness impregnation of a porous support, such as CeO\({}_{2}\) or \(\gamma\)-Al\({}_{2}\)O\({}_{3}\), with an aqueous solution of this precursor, followed by drying and calcination at a temperature of 500 \({}^{\circ}\)C [19]. Tetraaminenplatinum(II) chromates were also reported as precursors of Pt-Cr\({}_{2}\)O\({}_{3}\) composite catalysts, obtained by the thermal decomposition of these complex salts [20]. Since the application of chemical methods implies concerns about biosafety, methods based on the green chemistry approach are getting popular. Currently, researchers are exploring the bacteria-, fungi- and plant-based synthesis of nanoparticles, including the synthesis of platinum nanoparticles [21]. Spark ablation technology offers a cost-effective and a scalable route to nanoparticle generation. It enables the production of powders from any starting (feed) materials with a satisfactory electrical resistivity (<0.2 \(\Omega\)-cm) [22] and is characterized by a number of advantages, such as chemical purity of the produced powders, the absence of chemical wastes, the ability to use any conductor (pure metals, alloys or doped semiconductors) as a feed material and ease of controlling the size characteristics of the particles. Various designs of a spark discharge generator were developed since its introduction by [PERSON] [23]. [PERSON] et al. reviewed six designs developed by 2012 [24]. The spark ablation technology was successfully applied for producing various nanomaterials [25], including platinum and platinum oxide nanoparticles [26]. Recently, we applied this technology for producing tin oxide nanoparticles for use as a gas-sensing material [27], which exhibited a reduced sensitivity to water vapors due to the low content of surface hydroxyl groups. The objective of this work was to investigate the possibility of spark ablation technology to enable high-throughput production of platinum-based nanoparticles possessing a high potential of application in printed electronics.