Template-directed assembly of urchin-like CoSx/Co-MOF as an efficient bifunctional electrocatalyst for overall water and urea electrolysis

2020 ◽  
Vol 7 (14) ◽  
pp. 2602-2610 ◽  
Author(s):  
Huizhu Xu ◽  
Ke Ye ◽  
Kai Zhu ◽  
Jinling Yin ◽  
Jun Yan ◽  
...  
Keyword(s):  
Directed Assembly ◽  
Bifunctional Catalyst ◽  
Catalytic Performance ◽  
Bifunctional Electrocatalyst ◽  
Urea Electrolysis

The urchin-like CoSx/Co-MOF as a bifunctional catalyst has good catalytic performance toward UOR and HER.

Porous and amorphous cobalt hydroxysulfide core–shell nanoneedles on Ti-mesh as a bifunctional electrocatalyst for energy-efficient hydrogen production via urea electrolysis

2021 ◽  
Author(s):  
Yu Jiang ◽  
Shanshan Gao ◽  
Gongchen Xu ◽  
Xiaoming Song
Keyword(s):  
Hydrogen Production ◽  
High Activity ◽  
Energy Efficient ◽  
Bifunctional Catalyst ◽  
Core Shell ◽  
Bifunctional Electrocatalyst ◽  
Urea Electrolysis ◽  
Ti Mesh

Porous and amorphous CoSx(OH)y core–shell nanoneedles covered by numerous ultra-thin small nanosheets are synthesized successfully on Ti-mesh, and act as a high activity and stability bifunctional catalyst for urea electrolysis.

A bifunctional catalyst for efficient dehydrogenation and electro-oxidation of hydrazine

2018 ◽  
Vol 6 (37) ◽  
pp. 18050-18056 ◽  
Author(s):  
Jun Wang ◽  
Asim Khaniya ◽  
Lin Hu ◽  
Melanie J. Beazley ◽  
William E. Kaden ◽  
...  
Keyword(s):  
Bifunctional Catalyst ◽  
Catalytic Performance ◽  
Electro Oxidation

A Pt0.2Ni0.8 nanocatalyst has been developed and shows superior catalytic performance for both complete dehydrogenation and electro-oxidation of hydrazine.

Pt atoms on doped carbon nanosheets with ultrahigh N content as a superior bifunctional catalyst for hydrogen evolution/oxidation

2021 ◽  
Author(s):  
Zhen Zhang ◽  
Cheng Jiang ◽  
Ping Li ◽  
Qi Feng ◽  
Zhi liang Zhao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Oxidation Reaction ◽  
Bifunctional Catalyst ◽  
Catalytic Performance ◽  
N Content ◽  
Carbon Nanosheets

Isolated Pt atoms on N-doped carbon nanosheets exhibit excellent bifunctional catalytic performance towards the hydrogen evolution/oxidation reaction (HER/HOR).

Direct synthesis of DME over bifunctional catalyst: surface properties and catalytic performance

2003 ◽  
Vol 252 (2) ◽  
pp. 243-249 ◽  
Author(s):  
Kunpeng Sun ◽  
Weiwei Lu ◽  
Fengyan Qiu ◽  
Shuwen Liu ◽  
Xianlun Xu
Keyword(s):  
Surface Properties ◽  
Catalyst Surface ◽  
Direct Synthesis ◽  
Bifunctional Catalyst ◽  
Catalytic Performance

scholarly journals Ni-Fe phosphide deposited carbon felt as free-standing bifunctional catalyst electrode for urea electrolysis

2021 ◽  
Author(s):  
Woo Hyun Yun ◽  
Gautam Das ◽  
Bohyeon Kim ◽  
Bang Ju Park ◽  
Hyon Hee Yoon ◽  
...  
Keyword(s):  
Water Electrolysis ◽  
Bifunctional Catalyst ◽  
Electrolysis Cell ◽  
Carbon Felt ◽  
Free Standing ◽  
Cell Potential ◽  
Urea Electrolysis ◽  
A Cell ◽  
A Current ◽  
Catalyst Electrode

Abstract A free-standing catalyst electrode for the urea oxidation reaction (UOR) and hydrogen evolution reaction (HER) in a urea electrolysis cell was synthesized by electroplating a Ni-Fe alloy onto carbon felt, followed by phosphidation (P-NiFe@CF). The prepared P-NiFe@CF catalyst consisted of Ni5P4, NiP2, and FeP with 3D flower-like P-NiFe architecture on CF. P-NiFe@CF exhibited excellent electrocatalytic activity for the UOR (demanding only 1.44 V (vs. RHE) to achieve 200 mA cm −2), and for the HER with a low overpotential of 0.065 V (vs. RHE) at 10 mA cm−2, indicating its feasibility as a bifunctional catalyst electrode for urea electrolysis. A urea electrolysis cell with P-NiFe@CF as both the free-standing anode and cathode generated a current density of 10 mA cm−2 at a cell potential of 1.42 V (vs. RHE), which is considerably lower than that of water electrolysis, and also lower than previously reported values. The results indicate that the P-NiFe@CF catalyst electrodes can be used as free-standing bifunctional electrodes for urea electrolyzers.

scholarly journals Copper doped ceria porous nanostructures towards a highly efficient bifunctional catalyst for carbon monoxide and nitric oxide elimination

2015 ◽  
Vol 6 (4) ◽  
pp. 2495-2500 ◽  
Author(s):  
Shanlong Li ◽  
Nengli Wang ◽  
Yonghai Yue ◽  
Guangsheng Wang ◽  
Zhao Zu ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Carbon Monoxide ◽  
Co Oxidation ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Bifunctional Catalyst ◽  
Catalytic Performance ◽  
Doped Ceria ◽  
Reduction Of No ◽  
Porous Nanomaterials

Cu2+ doped CeO2 porous nanomaterials were synthesized by calcining CeCu–MOF nanocrystals. They exhibited a superior bifunctional catalytic performance for CO oxidation and selective catalytic reduction of NO.

Enhancement of Brønsted Acidity in Sulfate-Vanadium Treated Silica-Titania Aerogel as Oxidative-Acidic Bifunctional Catalyst

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Siew Ling Lee ◽  
Soo Chien Wei ◽  
Hadi Nur ◽  
Halimaton Hamdan
Keyword(s):  
Bifunctional Catalyst ◽  
Catalytic Performance ◽  
Brønsted Acidity ◽  
Brönsted Acidity ◽  
Titanium Structure

Enhancement of Brønsted acidity in silica-titania aerogel was achieved by loading both sulfate and vanadium onto the material. This phenomena could be due to formation of V(OSi)2OH-O-SO3- in the resulted sample. In contrast, no noticeable Brønsted acidity was detected in vanadium loaded silica-titania aerogel (V/ST). UV-vis DR analysis results showed that the amount of hydrated tetrahedral titanium species, which acts as oxidative site, increased significantly upon sulfation and vanadium loading on the surface of the aerogel. However, presence of vanadium in the samples tended to transform framework tetrahedral titanium to extra framework octahedral titanium structure. The catalytic performance of the samples were evaluated in consecutive transformation of 1-octene to 1,2-octanediol through formation of 1,2-epoxyoctane using aqueous H2O2.

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