Mn-Modified Graphitic Carbon Nitride-Supported Bimetallic PtNi Nanoparticles for Hydrogen Generation from Hydrous Hydrazine

Mn-modification, as a method of material element modification, has a vital efficacy on the structure of materials, providing abundant active sites for the loading of metal nanoparticles. Herein, highly dispersed PtNi nanoparticles deposited on Mn-modified graphitic carbon nitride (g-C3N4) was synergistically constructed by a facile and valid impregnation reduction method. Interestingly, among all the tested samples, the obtained Pt0.6Ni0.4/(MnOx)(2)-C3N4 display perfect catalytic activity towards decomposition of hydrous hydrazine to produce hydrogen in alkaline solution, with the value of turnover frequency (TOF) is 2749 h(-1) at 323 K. Simultaneously, the as-synthetic catalyst remains outstanding hydrogen selectivity and stability after five recycles. This work proposes a novel strategy for structural modification catalysts to enhance the catalytic performance for dehydrogenation of hydrous hydrazine.

Automated summary

In this study, highly dispersed PtNi nanoparticles were successfully deposited on Mn-modified graphitic carbon nitride (g-C3N4) by a facile impregnation reduction method. The obtained catalyst exhibited excellent catalytic activity, hydrogen selectivity and stability for the decomposition of hydrous hydrazine to produce hydrogen. This research proposes a novel strategy for structural modification catalysts to enhance the catalytic performance for dehydrogenation reactions.