Synthesis of nonstoichiometric titanium oxide nanoparticles using discharge in HCl solution

摘要: This study demonstrates the synthesis of nonstoichiometric titanium oxide (TiO2−δ) nanoparticles using plasma discharge. We have primarily investigated effect electrolyte concentration and edge shielding electrode on morphology, oxygen defects final product. As a precursor for nanoparticle synthesis, wire was utilized as cathode, which immersed in an HCl range 0.1–5.0 M. The shielded to maintain uniform distribution electric current. For comparison, we also used without shielding. Systematic studies indicate that as-prepared products were spherical nanoparticles, size decreased with decrease concentration. found affect oxidation degree products. In case edge-shielded electrode, product suppressed, resulting composition TiO1.72. contrast, shielding, favored, formation TiO1.90. could be attributed current at edge, heating-up enhanced These results confirm possibility synthesizing controllable by discharge solution.