Synergistically promoted H2 evolution from dimethylamine-borane and hydrazine monohydrate by simply alloying of Pt/C with Ni

Abstract

In this study, we first report a new strategy for synergistically promoting H2 evolution from dimethylamine-borane and hydrazine monohydrate by simply alloying of Pt/C with non-noble metal (including Fe, Co, Ni and Cu). Among them, NiPt/C exhibits the highest TOF value of 4151.7 mol(H2)·molcat−1·h−1, which is 7.2 times as that of Pt/C. Indeed, the Ea of the DMAB hydrolysis has been rapidly decreased from 56.34 kJ/mol (Pt/C) to 39.97 kJ/mol (NiPt/C), via simply alloying of Pt/C with Ni. Interestingly, NiPt/C also presents the superior catalytic activity in H2 evolution from hydrazine monohydrate, with a TOF of 1012.2 mol(H2)·molPt−1·h−1, whereas the only Pt/C does not work. This present work could provide a novel and efficient strategy for designing relative low-cost and high-performance and functional bimetallic nanocomposites for practice.