Abstract Background The nano-sized particles enhance the exposed surface area of active part catalyst, thereby increasing contact between precursors and catalyst considerably. In this study, nano-SiO 2 /1,5-diazabicyclo[4.3.0]non-5-en was synthesized, characterized used as a heterogeneous nanocatalyst for synthesis tetrahydrobenzo[ b ]pyran derivatives. Fourier Transform Infrared Spectroscopy, ...

Nanoparticle-based catalysts, or nanocatalysts, have been applied in various industrial sectors, including refineries, petrochemical plants, the pharmaceutical industry, the chemical industry, food processing, and environmental remediation. As a result, there is an increasing risk of human exposure to nanocatalysts. This review evaluates the toxicity of popular nanocatalysts applied in industri...

A new nanocatalyst which comprises gold particles (average size = (2.5 ± 1.3) nm) supported on intrinsically conductive polyaniline (PANI) was prepared via a sol-method. This Au/PANI catalyst was used for the first time in hydrogenation of the , -unsaturated aldehyde citral exhibiting high activity (93% conversion) and selectivity (76%) towards the products of C=O group hydrogenation, geraniol ...

The selective hydrogenation of chalcone to dihydrochalcone under atmospheric hydrogen pressure is investigated using a thermoregulated phase-transfer ruthenium nanocatalyst, representing the first nanocatalyst used for this reaction. Under optimal conditions, conversion into and selectivity are 98% >99%, respectively. catalyst can be easily separated from product recycled three times without...

This study describes the heterogeneous photocatalysis of CuO nanoflakes for effective degradation hazardous dyes. The successful synthesis was carried out by exploiting aqueous chemical growth method. synthesized material characterized versatile analytical tools including XRD, FE-SEM, EDX, AFM, ZP and FT-IR. engineered reveals texture having average size 18.3 nm (− 36.5 ± 3 mV) surface charge w...