Ni–Cu nano-crystalline alloys for efficient electrochemical hydrogen production in acid water

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51111-51119 ◽  
Author(s):  
H. Nady ◽  
M. Negem
Keyword(s):  
Hydrogen Production ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Acid Water ◽  
Nano Crystalline

The Ni–49%Cu nano-crystallins alloy showed higher HER activity than electrodeposited Ni because their nano-sized roughness results in a high surface area.

Ni supported high surface area CeO2–ZrO2 catalysts for hydrogen production from ethanol steam reforming

RSC Advances ◽  
2012 ◽  
Vol 2 (21) ◽  
pp. 8145 ◽  
Author(s):  
Mohamed A. Ebiad ◽  
Dalia R. Abd El-Hafiz ◽  
Radwa A. Elsalamony ◽  
Lamia. S. Mohamed
Keyword(s):  
Hydrogen Production ◽  
Surface Area ◽  
Steam Reforming ◽  
High Surface ◽  
High Surface Area ◽  
Ethanol Steam Reforming ◽  
Ethanol Steam

scholarly journals Photoreforming of Glucose over CuO/TiO2

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 477 ◽  
Author(s):  
Elnaz Bahadori ◽  
Gianguido Ramis ◽  
Danny Zanardo ◽  
Federica Menegazzo ◽  
Michela Signoretto ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Economic Analysis ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Lower Surface ◽  
Flame Synthesis ◽  
Biomass Hydrolysis ◽  
Model Molecule

Hydrogen production has been investigated through the photoreforming of glucose, as model molecule representative for biomass hydrolysis. Different copper- or nickel-loaded titania photocatalysts have been compared. The samples were prepared starting from three titania samples, prepared by precipitation and characterized by pure Anatase with high surface area, or prepared through flame synthesis, i.e., flame pyrolysis and the commercial P25, leading to mixed Rutile and Anatase phases with lower surface area. The metal was added in different loading up to 1 wt % following three procedures that induced different dispersion and reducibility to the catalyst. The highest activity among the bare semiconductors was exhibited by the commercial P25 titania, while the addition of 1 wt % CuO through precipitation with complexes led to the best hydrogen productivity, i.e., 9.7 mol H2/h kgcat. Finally, a basic economic analysis considering only the costs of the catalyst and testing was performed, suggesting CuO promoted samples as promising and almost feasible for this application.

Development of high surface area bulk W2N catalysts for hydrogen production from ammonia decomposition

2020 ◽  
Vol 45 (32) ◽  
pp. 16219-16226
Author(s):  
Seetharamulu Podila ◽  
Hafedh Driss ◽  
Sharif F. Zaman ◽  
Abdulrahim A. Al-Zahrani ◽  
Muhammad A. Daous ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Ammonia Decomposition

Visible-light-induced hydrogen production over Pt-Eosin Y catalysts with high surface area silica gel as matrix

2007 ◽  
Vol 166 (1) ◽  
pp. 74-79 ◽  
Author(s):  
Xiaojie Zhang ◽  
Zhiliang Jin ◽  
Yuexiang Li ◽  
Shuben Li ◽  
Gongxuan Lu
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Surface Area ◽  
Silica Gel ◽  
High Surface ◽  
High Surface Area ◽  
Eosin Y

scholarly journals Synthesis of NiAl2O4 with high surface area as precursor of Ni nanoparticles for hydrogen production

2010 ◽  
Vol 35 (21) ◽  
pp. 11725-11732 ◽  
Author(s):  
Nielson F.P. Ribeiro ◽  
Raimundo C.R. Neto ◽  
Silvia F. Moya ◽  
Mariana M.V.M. Souza ◽  
Martin Schmal
Keyword(s):  
Hydrogen Production ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Ni Nanoparticles

Atomically Ordered Rh2P Catalysts Anchored within Hollow Mesoporous Carbon for Efficient Hydrogen Production

2021 ◽  
Author(s):  
Xuwen Guo ◽  
Xin Chen ◽  
Yanping Huang ◽  
Xiaowen Min ◽  
Chuncai Kong ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Mesoporous Carbon ◽  
Room Temperature ◽  
High Surface ◽  
High Surface Area ◽  
Catalytically Active

Atomically ordered Rh2P nanocluster encapsulated within a high-surface-area hollow mesoporous carbon nanoreactor (Rh2P@HMC) is catalytically active for hydrogen production via electrocatalytic hydrogen evolution reaction (HER) and room-temperature dehydrogenation of ammonia...

Preparation and photocatalytic activity of Au/TiO2 lyogels for hydrogen production

2018 ◽  
Vol 2 (10) ◽  
pp. 2284-2295 ◽  
Author(s):  
Lester Martínez ◽  
Mónica Benito ◽  
Ignasi Mata ◽  
Lluís Soler ◽  
Elies Molins ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Ball Milling ◽  
Surface Area ◽  
Au Nanoparticles ◽  
High Surface ◽  
High Surface Area ◽  
Contact Points ◽  
Metal Support

High surface area titania lyogels have been prepared, thermally transformed into TiO2 polymorphs at 400–850 °C, and decorated by ball milling with preformed Au nanoparticles of ca. 2 nm to ensure the same contact points at the metal–support interphase.

scholarly journals Synthesizing the High Surface Area g-C3N4 for Greatly Enhanced Hydrogen Production

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 832
Author(s):  
Chengfei Wang ◽  
Tongxin Han ◽  
Chang Xin ◽  
Hui Miao
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
Redox Reaction ◽  
Active Sites ◽  
High Surface ◽  
High Surface Area ◽  
Ambient Atmosphere ◽  
Diffusion Distance

Adjusting the structure of g-C3N4 to significantly enhance its photocatalytic activity has attracted considerable attention. Herein, a novel, sponge-like g-C3N4 with a porous structure is prepared from the annealing of protonated melamine under N2/H2 atmosphere (PH-CN). Compared to bulk g-C3N4 via calcination of melamine under ambient atmosphere (B-CN), PH-CN displays thinner nanosheets and a higher surface area (150.1 m2/g), which is a benefit for shortening the diffusion distance of photoinduced carriers, providing more active sites, and finally favoring the enhancement of the photocatalytic activity. Moreover, it can be clearly observed from the UV-vis spectrum that PH-CN displays better performance for harvesting light compared to B-CN. Additionally, the PH-CN is prepared with a larger band gap of 2.88 eV with the Fermi level and conduction band potential increased and valence band potential decreased, which could promote the water redox reaction. The application experiment results show that the hydrogen evolution rate on PH-CN was nearly 10 times higher than that of B-CN, which was roughly 4104 μmol h−1 g−1. The method shown in this work provides an effective approach to adjust the structure of g-C3N4 with considerable photocatalytic hydrogen evolution activity.

Hydrogen production by ammonia decomposition using high surface area Mo2N and Co3Mo3N catalysts

2016 ◽  
Vol 6 (5) ◽  
pp. 1496-1506 ◽  
Author(s):  
Seetharamulu Podila ◽  
Sharif F. Zaman ◽  
Hafedh Driss ◽  
Yahia A. Alhamed ◽  
Abdulrahim A. Al-Zahrani ◽  
...  
Keyword(s):  
Citric Acid ◽  
Hydrogen Production ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Ammonia Decomposition ◽  
Molybdenum Nitride ◽  
Ammonium Heptamolybdate ◽  
Temperature Programmed

High surface area bulk molybdenum nitride catalysts were synthesized via temperature-programmed ammonolysis of an ammonium heptamolybdate and citric acid (CA) composite.

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