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Atomically dispersed catalysts are reported to exhibit remarkable activity in various reactions due to the high atom utilization, low-coordination environment of metal atoms and strong metal–support interaction. However, it remains unknown whether there is any interaction between the active metal monomers in the atomically dispersed catalysts. Zeng and co-workers have now demonstrated that the synergetic interaction between neighbouring Pt monomers on MoS2 enhanced the CO2 hydrogenation catalytic activity relative to isolated monomers. The cover is an artist's depiction of CO2 hydrogenation to methanol via synergy between neighbouring Pt monomers. The curved surface represents the MoS2 surface decorated with different types of neighbouring Pt monomer. The yellow sphere (S atom) between neighbouring white spheres (Pt atoms) is shining, as a reflection of a synergetic interaction.
The ring of a rotaxane molecule traverses a polymer track picking up leucine amino acids and synthesizing a homo-leucine oligomer, which in turn folds into an alpha helix and catalyses a chemical reaction.
A detailed mechanistic study between nanoparticles and radionuclides reveals the roles of β particles and γ radiation in observed light and the possibility of generating X-rays, expanding the radionuclides available for biomedical applications and offering a multicolour nuclear imaging modality.
Exposure to nanoparticles induces indirect autophagy-mediated signalling events, leading to neuron damage via astrocytes in a human model of the placenta and to DNA damage in the neonatal hippocampus in vivo.