Ultrafine bimetallic Pt–Ni nanoparticles immobilized on 3-dimensional N-doped graphene networks: a highly efficient catalyst for dehydrogenation of hydrous hydrazine†,Journal of Materials Chemistry A

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Ultrafine bimetallic Pt–Ni nanoparticles immobilized on 3-dimensional N-doped graphene networks: a highly efficient catalyst for dehydrogenation of hydrous hydrazine†
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2018-11-23 00:00:00 , DOI: 10.1039/c8ta09003c
Amit Kumar _{1,

2,

3,

4} , Xinchun Yang _{1,

2,

3,

4} , Qiang Xu _{1,

2,

3,

4,

5}

Affiliation

Ultrafine and uniformly dispersed bimetallic Pt–Ni nanoparticles (NPs) have been immobilized on novel 3-dimensional N-doped graphene networks (NGNs) by a facile wet chemical reduction method. NGNs were obtained by 3-dimensional assembly of graphene layers with simultaneous nitrogen doping via crosslinking of graphene oxide (GO) with melamine formaldehyde resin (MFR) under hydrothermal conditions followed by carbonization. Surprisingly, NGN-supported Pt_0.5Ni_0.5 NPs exhibit extremely high catalytic activity for the dehydrogenation of hydrazine hydrate, achieving 100% H₂ selectivity with the highest turnover frequency (TOF) of 943 h⁻¹ at 303 K reported thus far. The small size and synergistic effects are responsible for the superior catalytic activity.

中文翻译：

固定在3维N掺杂石墨烯网络上的超细双金属Pt-Ni纳米颗粒：一种用于含水肼脱氢的高效催化剂†

超细且均匀分散的双金属Pt-Ni纳米颗粒（NPs）已通过一种简便的湿法化学还原方法固定在新型3维N掺杂石墨烯网络（NGNs）上。通过在水热条件下通过氧化石墨烯（GO）与三聚氰胺甲醛树脂（MFR）的交联同时进行氮掺杂，将石墨烯层进行3维组装，同时进行氮掺杂，可以得到NGN 。出人意料的是，NGN负载的Pt _0.5 Ni _0.5 NPs对水合肼的脱氢表现出极高的催化活性，实现了100％H ₂选择性，最高的周转频率（TOF）为943 h ^-1迄今报道的303K。较小的尺寸和协同作用导致了优异的催化活性。

更新日期：2018-11-23

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