Bimetallic Phosphides as High-Efficient Electrocatalysts for Hydrogen Generation

2021 ◽  
Vol 60 (3) ◽  
pp. 1624-1630
Author(s):  
Jiao Li ◽  
Haiyan Zheng ◽  
Chunyan Xu ◽  
Zhongmin Su ◽  
Xiao Li ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
High Efficient ◽  
Bimetallic Phosphides

NiFePd/UiO-66 nanocomposites as highly efficient catalysts to accelerate hydrogen evolution from hydrous hydrazine

2019 ◽  
Vol 6 (10) ◽  
pp. 2727-2735 ◽  
Author(s):  
Xue Song ◽  
Pan Yang ◽  
Jingchuan Wang ◽  
Xiaochong Zhao ◽  
Yuanlin Zhou ◽  
...  
Keyword(s):  
Hydrazine Hydrate ◽  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
High Efficient ◽  
Nano Catalysts

NiFe nano-catalysts modified by the dopant of Pd were reducted on UiO-66 by NaBH4, which have been used as a low cost and high efficient catalyst with outstanding activity and durability for hydrogen generation from the decomposition of hydrazine hydrate.

scholarly journals High-throughput Production of ZnO-MoS2-Graphene Heterostructures for Highly Efficient Photocatalytic Hydrogen Evolution

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2233 ◽  
Author(s):  
Haocong Dong ◽  
Junzhu Li ◽  
Mingguang Chen ◽  
Hongwei Wang ◽  
Xiaochuan Jiang ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
High Throughput ◽  
Hydrogen Generation ◽  
Synergistic Effects ◽  
Industrial Applications ◽  
High Electron ◽  
Photocatalytic Efficiency ◽  
Highly Efficient ◽  
High Efficient

High-throughput production of highly efficient photocatalysts for hydrogen evolution remains a considerable challenge for materials scientists. Here, we produced extremely uniform high-quality graphene and molybdenum disulfide (MoS2) nanoplatelets through the electrochemical-assisted liquid-phase exfoliation, out of which we subsequently fabricated MoS2/graphene van der Waals heterostructures. Ultimately, zinc oxide (ZnO) nanoparticles were deposited into these two-dimensional heterostructures to produce an artificial ZnO/MoS2/graphene nanocomposite. This new composite experimentally exhibited an excellent photocatalytic efficiency in hydrogen evolution under the sunlight illumination ( λ > 400   n m ), owing to the extremely high electron mobilities in graphene nanoplatelets and the significant visible-light absorptions of MoS2. Moreover, due to the synergistic effects in MoS2 and graphene, the lifetime of excited carriers increased dramatically, which considerably improved the photocatalytic efficiency of the ZnO/MoS2/graphene heterostructure. We conclude that the novel artificial heterostructure presented here shows great potential for the high-efficient photocatalytic hydrogen generation and the high throughput production of visible-light photocatalysts for industrial applications.

Hydrogen generation from the decomposition of hydrous hydrazine using amorphous NiB nanocatalysts prepared by chemical etching method

2019 ◽  
Vol 12 (01) ◽  
pp. 1850097 ◽  
Author(s):  
Lei Wei ◽  
Maixia Ma ◽  
Wenjuan Li ◽  
Dongsheng Wang ◽  
Xiaolong Dong ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Specific Surface ◽  
Chemical Etching ◽  
Reduction Method ◽  
Hydrogen Generation ◽  
Turnover Frequency ◽  
Metal Free ◽  
High Efficient ◽  
Hydrogen Selectivity ◽  
Co Reduction

Hydrous hydrazine (N2H[Formula: see text]O) is considered to be one of the most promising chemicals for hydrogen storage, and the development of high-efficient and noble-metal-free catalysts is of key importance for N2H[Formula: see text]O decomposition to generate hydrogen. In this work, NiZnB nanoparticles (NiZnB NPs) synthesized by co-reduction method were further treated to remove the metal zinc by chemical etching with sodium hydroxide, and the resulting amorphous NiB nanocatalysts (NiB NCs) presented higher specific surface area and hydrogen selectivity than that of common NiB nanoparticles. Experimental results also indicate that heat-treatment of the NiZnB NPs can increase turnover frequency (TOF) but decrease hydrogen selectivity of the NiB NCs. NiB NCs derived from NiZnB NPs heated at 200[Formula: see text]C show TOF and selectivity of 0.72[Formula: see text]h[Formula: see text] and 98.1%, respectively. In addition, reusability of the resulting catalyst was also investigated.

Porous one-dimensional Mo2C–amorphous carbon composites: high-efficient and durable electrocatalysts for hydrogen generation

2015 ◽  
Vol 17 (25) ◽  
pp. 16609-16614 ◽  
Author(s):  
Kai Zhang ◽  
Chunyan Li ◽  
Yang Zhao ◽  
Xianbo Yu ◽  
Yujin Chen
Keyword(s):  
Amorphous Carbon ◽  
High Efficiency ◽  
Hydrogen Generation ◽  
Carbon Composites ◽  
One Dimensional ◽  
High Efficient

Porous 1D Mo2C–amorphous carbon composites fabricated by in situ solid reactions exhibit high-efficiency and durable electrocatalytic activities for hydrogen generation.

Porous Co3O4 nanoplatelets as efficient catalyst precursor for hydrogen generation from the hydrolysis of alkaline sodium borohydride solution

2019 ◽  
Vol 12 (01) ◽  
pp. 1850109 ◽  
Author(s):  
Maixia Ma ◽  
Lei Wei ◽  
Fang Jin
Keyword(s):  
Sodium Borohydride ◽  
Hydrogen Generation ◽  
Catalyst Precursor ◽  
Efficient Catalyst ◽  
Noble Metal Catalysts ◽  
Reaction Solution ◽  
High Efficient ◽  
Catalyst Morphology ◽  
Hydrolysis Of ◽  
Calcination Treatment

For hydrogen generation from sodium borohydride hydrolysis, high-efficient catalyst precursor of porous Co3O4 nanoplatelets was successfully achieved by a combined process of hydrothermal synthesis and calcination treatment. Effects of calcination temperature on catalyst morphology and activity were mainly investigated, and the optimal condition was established. Using a reaction solution comprising 10[Formula: see text]wt.% NaBH4 and 2[Formula: see text]wt.% NaOH, the porous Co3O4 nanoplatelets exhibited a maximum hydrogen generation rate up to 19.52[Formula: see text]L[Formula: see text]min[Formula: see text] g[Formula: see text] at the temperature of 25[Formula: see text]C, which was much higher than similar Co3O4 catalyst precursors and noble metal catalysts in literature.

“Superaerophobic” NiCo Bimetallic Phosphides for High-Efficient Hydrogen Evolution Reaction Electrocatalysts

2021 ◽  
Author(s):  
ling Zhang ◽  
Jiawei Huang ◽  
Zheng Qizheng ◽  
Li Ang ◽  
Li Xianglan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
High Efficient ◽  
Bimetallic Phosphides

A “superaerophobic” NiCo bimetallic phosphides electrocatalyst has been fabricated by employing bimetal-organic frameworks as self-sacrificing templates. Only an overpotential of 205 mV can drive the HER current density to 800...

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