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Visualizzazione post con etichetta metal-organic framework (MOF). Mostra tutti i post
Visualizzazione post con etichetta metal-organic framework (MOF). Mostra tutti i post

sabato 14 novembre 2020

# chem: photocatalytic hydrogen production activity by single-atom alloy (SAA) cocatalyst

<< Photocatalysis, converting solar energy into chemical energy, has been recognized to be a very promising solution to current energy and environmental issues. >>

<< In contrast to the existing reports centered on co-catalysts, such as the development of non-noble metals, particle size and distribution control, exposed crystal facets and their interface contact with photosensitizers, the regulation on the surface charge state of co-catalysts by changing their microstructures provides vast opportunities for boosting photocatalysis, yet remains extremely rare. >> 

<< In this work, Dr. Jiang's research group (..) has achieved the goal of optimizing Pt surface charge states via the control of bimetallic Pd@Pt (Palladium@Platinum) microstructure and Pt coordination environment. >> 

<< As a result, all Pd@Pt/MOF (/Metal-Organic Framework) present excellent photocatalytic hydrogen production activity due to the electron-rich Pt sites benefited from charge redistribution effect. Moreover, the optimized Pd10@Pt1/MOF composite with SAA (Single-Atom Alloy) co-catalyst, which features the most electron-rich Pt, exhibits an exceptionally high photocatalytic hydrogen production activity, far surpassing its corresponding counterparts  >> 

Single-atom alloy: Superb cocatalyst for photocatalysis. Science China Press. Oct 28, 2020. 


Yating Pan, Yunyang Qian, et al. Precise fabrication of single-atom alloy co-catalyst with optimal charge state for enhanced photocatalysis. National Science Review, nwaa224. doi: 10.1093/ nsr/nwaa224. Sep 3, 2020.