Pt nanocrystallines/TiO2 with thickness-controlled carbon layers: Preparation and activities in CO oxidation

Visible light driven photo-reduction of Cu2+ to Cu2O to Cu in water for photocatalytic hydrogen production

“…2), the generated Cu nanoparticles showed agglomerated behaviour, which self-assembly into larger nanoparticles. To improve the catalytic efficiency, it is highly necessary to adopt methods that can prevent the overgrowth of nanoparticles, 42 such as carbon layer protection, 43 introducing graphene as support to form composite material, 30,31 use of growth directing agents 44 et al In a following work, we managed to prepare dendritic copper based nanoparticles with uniform size around 20 nm in a photocatalytic system with PVP as directing agent, which we would hopefully to demonstrate in further work.…”

Pt/Al2O3 coated with N-doped carbon as a highly selective and stable catalyst for catalytic hydrogenation of p-chloronitrobenzene to p-chloroaniline

“…Similarly, enhanced stability of supported metal catalyst via carbon coating was also reported previously. 43 Notably, although enhanced catalytic activity of Pt/Al 2 O 3 @NC-25 was observed and partial Pt sites were exposed on the catalyst surface aer 2 reaction cycles, the catalytic selectivities to p-CAN were not accordingly decreased and remained 100% aer 180 min reaction time in 5 reaction cycles, conrming that the electronic effect between Pt and NC overcoating played an important role in the high selectivity of the used Pt/Al 2 O 3 @NC-25.…”

Recent progress on precious metal single atom materials for water splitting catalysis

“…Photochemical reduction is a common strategy for the synthesis of precious metal nanocrystals via utilizing light irradiation 77,78 . The synthesis process includes nucleation and growth, finally transformation into metal nanocrystals.…”