Dendrimer-Encapsulated Cobalt Nanoparticles as High-Performance Catalysts for the Hydrolysis of Ammonia Borane

ChemCatChem ◽  
2014 ◽  
pp. n/a-n/a ◽  
Author(s):  
Kengo Aranishi ◽  
Qi-Long Zhu ◽  
Qiang Xu
Keyword(s):  
High Performance ◽  
Ammonia Borane ◽  
Cobalt Nanoparticles ◽  
Hydrolysis Of

Highly efficient hydrolysis of ammonia borane by anion (−OH, F−, Cl−)-tuned interactions between reactant molecules and CoP nanoparticles

2017 ◽  
Vol 53 (4) ◽  
pp. 705-708 ◽  
Author(s):  
Zi-Cheng Fu ◽  
Yong Xu ◽  
Sharon Lai-Fung Chan ◽  
Wei-Wei Wang ◽  
Fang Li ◽  
...  
Keyword(s):  
High Performance ◽  
Ammonia Borane ◽  
Ambient Conditions ◽  
Highly Efficient ◽  
Performance System ◽  
Hydrolysis Of ◽  
Nanoparticle Catalyst

An anion-assisted hydrolytic H2-releasing ultra-high performance system involving ammonia borane and a CoP nanoparticle catalyst has been established under ambient conditions.

A high-performance Pt–Co bimetallic catalyst with polyethyleneimine decorated graphene oxide as support for hydrolysis of ammonia borane

RSC Advances ◽  
2014 ◽  
Vol 4 (77) ◽  
pp. 41152-41158 ◽  
Author(s):  
Mengxiong Li ◽  
Jiantong Hu ◽  
Zhongxin Chen ◽  
Hongbin Lu
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Bimetallic Catalysts ◽  
High Performance ◽  
Bimetallic Catalyst ◽  
Ammonia Borane ◽  
Hydrolysis Of

PEI–GO/Pt0.17Co0.83was synthesized and showed the best catalytic activity of the reported Pt-based bimetallic catalysts for the hydrolysis of ammonia borane.

scholarly journals Ni0.5Cu0.5Co2O4 Nanocomposites, Morphology, Controlled Synthesis, and Catalytic Performance in the Hydrolysis of Ammonia Borane for Hydrogen Production

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1334 ◽  
Author(s):  
Yufa Feng ◽  
Jin Zhang ◽  
Huilong Ye ◽  
Liling Li ◽  
Huize Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Ammonia Borane ◽  
Catalytic Performance ◽  
Active Species ◽  
High Catalytic Activity ◽  
Practical Applications ◽  
Production Of Hydrogen ◽  
Strong Candidate ◽  
Hydrolysis Of

The catalytic hydrolysis of ammonia borane (AB) is a promising route to produce hydrogen for mobile hydrogen‒oxygen fuel cells. In this study, we have successfully synthesized a variety of Ni0.5Cu0.5Co2O4 nanocomposites with different morphology, including nanoplatelets, nanoparticles, and urchin-like microspheres. The catalytic performance of those Ni0.5Cu0.5Co2O4 composites in AB hydrolysis is investigated. The Ni0.5Cu0.5Co2O4 nanoplatelets show the best catalytic performance despite having the smallest specific surface area, with a turnover frequency (TOF) of 80.2 molhydrogen·min−1·mol−1cat. The results reveal that, in contrast to the Ni0.5Cu0.5Co2O4 nanoparticles and microspheres, the Ni0.5Cu0.5Co2O4 nanoplatelets are more readily reduced, leading to the fast formation of active species for AB hydrolysis. These findings provide some insight into the design of high-performance oxide-based catalysts for AB hydrolysis. Considering their low cost and high catalytic activity, Ni0.5Cu0.5Co2O4 nanoplatelets are a strong candidate catalyst for the production of hydrogen through AB hydrolysis in practical applications.

Facile Synthesis of Monodispersed Co Nanoparticles on Titanium Carbides for Hydrolysis of Ammonia Borane at Mild Temperature

2019 ◽  
Vol 19 (11) ◽  
pp. 7392-7397 ◽  
Author(s):  
Tong Liu ◽  
Qing-Tao Wang ◽  
Yong-Heng Sun ◽  
Mei Zhao
Keyword(s):  
High Performance ◽  
Ammonia Borane ◽  
Catalytic Performance ◽  
Fast Tracking ◽  
New Strategy ◽  
Titanium Carbides ◽  
Co Nanoparticles ◽  
Co Reduction ◽  
Mild Temperature ◽  
Hydrolysis Of

Herein, we successfully immobilized non-noble Co nanoparticles on titanium carbides (MXene) for the hydrolysis of ammonia borane by a simple co-reduction route. The synthesized Co nanoparticles with the size of 3.2 nm were monodispersed on MXene surface. The Co NPs/MXene exhibited excellent catalytic performance for the hydrolysis of ammonia borane with TOF value of 39.9 molH2 mol−1cat min−1 at 323 K. The enhanced catalytic property was mainly due to the ultrafine nanoparticles formed on MXene surface. More importantly, the catalytic activity for hydrolysis of ammonia borane did not significantly decrease for up to 6 recycling tests, indicating the remarkable reusability of Co NPs/MXene. Furthermore, this study opens up a new strategy for the preparation of non-noble metallic nanocatalysts with high performance for hydrolysis reactions in practical hydrogen storage systems, thereby fast-tracking the application of ammonia borane in fuel cells.

Porous nitrogen-doped carbon-immobilized bimetallic nanoparticles as highly efficient catalysts for hydrogen generation from hydrolysis of ammonia borane

2015 ◽  
Vol 3 (45) ◽  
pp. 22807-22815 ◽  
Author(s):  
Lingling Guo ◽  
Xiaojun Gu ◽  
Kai Kang ◽  
Yanyan Wu ◽  
Jia Cheng ◽  
...  
Keyword(s):  
High Performance ◽  
Hydrogen Generation ◽  
Bimetallic Nanoparticles ◽  
Ammonia Borane ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Nitrogen Doped Carbon ◽  
Hydrolysis Of

High-performance hydrogen generation from hydrolysis of ammonia borane has been achieved over porous nitrogen-doped carbon-immobilized bimetallic nanoparticles.

scholarly journals Hexagonal CuCo2O4 Nanoplatelets, a Highly Active Catalyst for the Hydrolysis of Ammonia Borane for Hydrogen Production

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 360 ◽  
Author(s):  
Jinyun Liao ◽  
Yufa Feng ◽  
Shiqi Wu ◽  
Huilong Ye ◽  
Jin Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Reaction Medium ◽  
Ammonia Borane ◽  
High Viscosity ◽  
Hydrolysis Rate ◽  
Noble Metal Catalysts ◽  
Highly Active ◽  
Reaction Solution ◽  
Hydrolysis Of

Catalytic hydrolysis of ammonia borane (AB) has been considered as an effective and safe method to generate hydrogen. Development of highly active and low-cost catalysts is one of the key tasks for this technology. In this work, hexagonal CuCo2O4 nanoplatelets with a thickness of approximately 55 nm were prepared. In AB hydrolysis, those nanoplatelets exhibited ultrahigh catalytic activity with turnover frequency (TOF) of 73.4 molhydrogen min−1 molcat−1. As far as we know, this is one of the highest TOF values ever reported for non-noble metal catalysts. In addition, the effects of viscosity and different alkalis on the hydrolysis were also investigated. It is revealed that high viscosity of the reaction medium will retard the hydrolysis reaction. The presence of NaOH, KOH, and Na2CO3 in the reaction solution is favorable for hydrolytic process. In contrast, NH3·H2O will slow down the hydrolysis rate of ammonia borane. This work can provide some novel insight into the design of catalysts with both high performance and low cost. Besides, some findings in the present study can also offer us some information about how to improve the hydrolysis rates by optimizing the hydrolysis condition.

Cobalt nanoparticles embedded in porous N-doped carbon as long-life catalysts for hydrolysis of ammonia borane

2016 ◽  
Vol 6 (10) ◽  
pp. 3443-3448 ◽  
Author(s):  
Haixia Wang ◽  
Yaran Zhao ◽  
Fangyi Cheng ◽  
Zhanliang Tao ◽  
Jun Chen
Keyword(s):  
Thermal Decomposition ◽  
Ammonia Borane ◽  
Cobalt Nanoparticles ◽  
Long Life ◽  
Hydrolysis Of

Cobalt nanoparticles uniformly embedded in porous N-doped carbon prepared through the thermal decomposition of Co(salen) are promising catalysts for hydrolysis of ammonia borane.

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