Professor Hu Wenbin, Tianjin University, Angew. Chem. Int. Ed .: Spontaneous Synthetic Silver Nanoparticles Modified Transition Metal Hydroxide Enhanced Oxygen Reaction
For the catalyst design of the oxygen reactive reaction (Oer), the preparation of the metal support hybrid structure catalysts typically need to introduce external energy, such as pyrolysis, photolysis and electrodeposition, etc., but the means of this external energy is undoubtedly Add the preparation cost.
In this article, Professor Hu Wenbin, Tianjin University, adopts a new method based on spontaneous oxidative reactions (SRR), and has successfully prepared silver nanoparticles modified transition metal hydroxide (TMHS) composites, silver ions and TMH. The SRR between SRR provides a simple and easy way to establish a valid and stable heterogeneous structure, so that Oer activity can be improved. As the author expects, the AG @ Co (OH) X catalyst grown on the carbon cloth has excellent Oer activity and durability, even better than the precious metal base catalyst IrO2 and many previously reported Oer electrocatalysts. By experimental and theoretical analysis, strong electron interaction between Ag and CO (OH) 2 activated silver clusters as Oer active centers, effectively optimizing the combination of the intermediates, thereby promoting Oer reaction kinetics .
Preparation of Ag @ Co (OH) X / CC material: First, α-CO (OH) 2 film is prepared by electrodeposition method by electrodeposition method, and then CO (OH) 2 / cc is immersed in 20 light conditions. ML, 50 mM AGNO3 aqueous solution 10 min. After the reaction, the product was washed with deionized water to obtain Ag @ Co (OH) X / CC.
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