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In Situ Growth of Ultrafine PtPd Nanoparticles on Bifunctional NH 2 ‐N‐rGO with Remarkable Catalytic Activity for Ammonia Borane Dehydrogenation
Author(s) -
Liu Yuan,
Gao Manyi,
Yang Weiwei,
Yu Yongsheng
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202002116
Subject(s) - ammonia borane , dehydrogenation , bimetallic strip , catalysis , nanomaterial based catalyst , bifunctional , nanoparticle , chemistry , hydrolysis , hydrogen storage , oxide , inorganic chemistry , graphene , ammonia , materials science , chemical engineering , hydrogen , nanotechnology , organic chemistry , engineering
The design of robust and highly efficient heterogeneous catalyst for ammonia borane (AB) hydrolysis is of great importance to realize its application in energy storage. Herein, bimetallic ultrafine PtPd nanoparticles (NPs), supported on NH 2 ‐functionalized and N‐doped reduced grapheme oxide (NH 2 ‐N‐rGO), were prepared by a simple and effective method under mild condition. The introduction of the −NH 2 −N group on rGO is the critical issue for the formation of the ultrafine and well‐dispersed bimetallic PtPd NPs (1.9 nm) with relatively large surface area and enough active sites. These catalysts have excellent catalytic activities in the hydrolytic dehydrogenation of AB and their activity was composition dependent. Among these catalysts, the Pt 0.5 Pd 0.5 /NH 2 ‐N‐rGO composite catalysts exhibit the highest catalytic activity with an initial turnover frequency of 699.6 mol (hydrogen) •mol (catalyst) −1 •min −1 for the hydrolytic dehydrogenation of AB. This work offers a new way for the design and preparation of the bimetallic ultrafine nanocatalysts with excellent catalytic activities for AB hydrolysis.