scholarly journals MoO3-Doped MnCo2O4 Microspheres Consisting of Nanosheets: An Inexpensive Nanostructured Catalyst to Hydrolyze Ammonia Borane for Hydrogen Generation

Nanomaterials ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 21 ◽  
Author(s):  
Dongsheng Lu ◽  
Yufa Feng ◽  
Zitian Ding ◽  
Jinyun Liao ◽  
Xibin Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Hydrogen Generation ◽  
Active Catalyst ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Ammonia Borane ◽  
Chemical Components ◽  
Nanostructured Catalyst ◽  
Turnover Frequency ◽  
Production Of Hydrogen

Production of hydrogen by catalytically hydrolyzing ammonia borane (AB) has attracted extensive attention in the field of catalysis and energy. However, it is still a challenge to develop a both inexpensive and active catalyst for AB hydrolysis. In this work, we designed a series of MoO3-doped MnCo2O4 (x) catalysts, which were fabricated by a hydrothermal process. The morphology, crystalline structure, and chemical components of the catalysts were systematically analyzed. The catalytic behavior of the catalyst in AB hydrolysis was investigated. Among these catalysts, MoO3-doped MnCo2O4 (0.10) microspheres composed of nanosheets exhibited the highest catalytic activity. The apparent activation energy is 34.24 kJ mol−1 and the corresponding turnover frequency is 26.4 molhydrogen min−1 molcat−1. Taking into consideration the low cost and high performance, the MoO3-doped MnCo2O4 (0.10) microspheres composed of nanosheets represent a promising catalyst to hydrolyze AB for hydrogen production.

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.

scholarly journals NiCo Nanorod Array Supported on Copper Foam as a High-Performance Catalyst for Hydrogen Production From Ammonia Borane

2021 ◽  
Vol 8 ◽  
Author(s):  
Liling Li ◽  
Binshan Guo ◽  
Hang Li ◽  
Xibin Zhang ◽  
Yufa Feng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Production ◽  
High Performance ◽  
Hydrogen Generation ◽  
Hydrothermal Process ◽  
Ammonia Borane ◽  
Hydrogen Energy ◽  
Nanorod Arrays ◽  
Strong Base ◽  
Copper Foam

Searching for inexpensive, durable, and active catalysts for the dehydrogenation of ammonia borane (AB) is an important subject in the field of hydrogen energy. In this study, we have fabricated NiCo nanorod arrays anchored on copper foam (CF) by a simple hydrothermal process. The catalytic performance of those array catalysts in AB hydrolysis was studied. It was found that NiCo-1/CF showed the highest catalytic activity with a hydrogen generation rate (HGR) of 1.03 Lhydrogen g−1 min−1, which was much higher than that for the unsupported NiCo-1 catalyst. It has been demonstrated that strong base can significantly enhance hydrogen production. After six catalytic cycles, the morphology, crystal structure, and catalytic activity were maintained, indicating that the NiCo-1/CF sample showed good reusability and high durability. Considering their low cost and high performance, the NiCo nanorod arrays anchored on CF can be a strong candidate catalyst for hydrogen generation for mobile hydrogen-oxygen fuel cells.

Co3O4-CuCoO2 hybrid nanoplates as a low-cost and highly active catalyst for producing hydrogen from ammonia borane

2021 ◽  
Author(s):  
Yufa Feng ◽  
Jinyun Liao ◽  
Xiaodong Chen ◽  
Qingyu Liao ◽  
Huize Wang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Active Catalyst ◽  
Low Cost ◽  
Ammonia Borane ◽  
Catalytic Materials ◽  
Highly Active ◽  
Promising Strategy

Developing low-cost and highly active hydrolysis catalytic materials for the dehydrogenation of hydrogen-rich chemicals is a promising strategy to store and easily release hydrogen for fuel cell applications. In this...

scholarly journals High Performance, Low Cost Hydrogen Generation from Renewable Energy

2014 ◽  
Author(s):  
Katherine Ayers ◽  
Luke Dalton ◽  
Andy Roemer ◽  
Blake Carter ◽  
Mike Niedzwiecki ◽  
...  
Keyword(s):  
Renewable Energy ◽  
High Performance ◽  
Hydrogen Generation ◽  
Low Cost

Three-Dimensional MoS2/Graphene Hybrid Aerogel as Free-Standing, High-Performance Electrode for Supercapacitor

NANO ◽  
2020 ◽  
Vol 15 (05) ◽  
pp. 2050062
Author(s):  
Zhaolei Meng ◽  
Xiaojian He ◽  
Song Han ◽  
Zijian Hu
Keyword(s):  
Porous Structure ◽  
Surface Area ◽  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Three Dimensional ◽  
Rate Capability ◽  
Free Standing ◽  
Hybrid Aerogel

Carbon materials are generally employed as supercapacitor electrodes due to their low- cost, high-chemical stability and environmental friendliness. However, the design of carbon structures with large surface area and controllable porous structure remains a daunt challenge. In this work, a three-dimensional (3D) hybrid aerogel with different contents of MoS2 nanosheets in 3D graphene aerogel (MoS2-GA) was synthesized through a facial hydrothermal process. The influences of MoS2 content on microstructure and subsequently on electrochemical properties of MoS2-GA are systematically investigated and an optimized mass ratio with MoS2: GA of 1:2 is chosen to achieve high mechanical robustness and outstanding electrochemical performance in the hybrid structure. Due to the large specific surface area, porous structure and continuous charge transfer network, such MoS2-GA electrodes exhibit high specific capacitance, good rate capability and excellent cyclic stability, showing great potential in large-scale and low-cost fabrication of high-performance supercapacitors.

scholarly journals Monodisperse AgPd alloy nanoparticles as a highly active catalyst towards the methanolysis of ammonia borane for hydrogen generation

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105940-105947 ◽  
Author(s):  
Daohua Sun ◽  
Pengyao Li ◽  
Bin Yang ◽  
Yan Xu ◽  
Jiale Huang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Room Temperature ◽  
Hydrogen Generation ◽  
Active Catalyst ◽  
Ammonia Borane ◽  
Alloy Nanoparticles ◽  
Highly Active

Monodisperse AgPd alloy NPs showed remarkable catalytic activity towards the generation of hydrogen from the methanolysis of ammonia borane at room temperature.

Graphene sheets/cobalt nanocomposites as low-cost/high-performance catalysts for hydrogen generation

2012 ◽  
Vol 135 (2-3) ◽  
pp. 826-831 ◽  
Author(s):  
Fei Zhang ◽  
Chengyi Hou ◽  
Qinghong Zhang ◽  
Hongzhi Wang ◽  
Yaogang Li
Keyword(s):  
High Performance ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Graphene Sheets

Hydroxyapatite-nanosphere supported ruthenium(0) nanoparticle catalyst for hydrogen generation from ammonia-borane solution: kinetic studies for nanoparticle formation and hydrogen evolution

RSC Advances ◽  
2014 ◽  
Vol 4 (55) ◽  
pp. 28947-28955 ◽  
Author(s):  
Halil Durak ◽  
Mehmet Gulcan ◽  
Mehmet Zahmakiran ◽  
Saim Ozkar ◽  
Murat Kaya
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
Active Catalyst ◽  
Kinetic Studies ◽  
Ammonia Borane ◽  
Highly Active ◽  
Solution Kinetic ◽  
Hydrolysis Of ◽  
Nanoparticle Catalyst

Nanohydroxyapatite-supported ruthenium(0) nanoparticles formed in situ during the hydrolysis of AB have been found to be a highly active catalyst in the generation of hydrogen from aqueous AB solution.

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