ZnCl loaded TiO nanomaterial: an efficient green catalyst to one-pot solvent-free synthesis of propargylamines.

One-pot green synthesis of propargylamines using ZnCl loaded TiO nanomaterial under solvent-free conditions has been effectively accomplished. The aromatic aldehydes, amines, and phenylacetylene were reacted at 100 °C in the presence of the resultant catalyst to form propargylamines. The nanocrystalline TiO was initially synthesized by a sol-gel method from titanium(iv) isopropoxide (TTIP) and further subjected to ZnCl loading by a wet impregnation method.

Ruthenium-decorated vanadium pentoxide for room temperature ammonia sensing.

Layer structured vanadium pentoxide (VO) microparticles were synthesized hydrothermally and successfully decorated by a facile wet chemical route, with ∼10-20 nm sized ruthenium nanoparticles. Both VO and ruthenium nanoparticle decorated VO (1%Ru@VO) were investigated for their suitability as resistive gas sensors. It was found that the 1%Ru@VO sample showed very high selectivity and sensitivity towards ammonia vapors.