Mn‐Modified Graphitic Carbon Nitride‐Supported Bimetallic PtNi Nanoparticles for Hydrogen Generation from Hydrous Hydrazine. Issue 39 (19th October 2022)

• Record Type: Journal Article
• Authors: Zheng, Junning; Liang, Yu; Li, Gui; Jin, Biyu; Wan, Chao; Ye, Mingfu; Xu, Lixin
• Is Part Of: ChemistrySelect. Volume 7:Issue 39(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-19
• Subjects: hydrogen production -- hydrogen storage -- hydrous hydrazine -- Mn-modification -- PtNi Nanoparticles; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202202690
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: 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‐C3 N4 ) was synergistically constructed by a facile and valid impregnation reduction method. Interestingly, among all the tested samples, the obtained Pt0.6 Ni0.4 /(MnOx )2 ‐C3 N4 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. Abstract : Bimetallic PtNi nanoparticles were successfully immobilized on (MnOx )2 ‐C3 N4 via a straightforward impregnation reduction method. Thanks to the synergistic effect between Pt and Ni, Pt0.6 Ni0.4 /(MnOx )2 ‐C3 N4 catalyst exhibits outstanding catalytic toward dehydrogenation of hydrazine monohydrate. The corresponding TOF value can achieve 2749 h −1 with 100 % H2 selectivity, which is much superior than some reported catalysts.