Bimetallic Ag–Cu alloy nanoparticles as a highly active catalyst for the enamination of 1,3-dicarbonyl compounds

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 49923-49940 ◽  
Author(s):  
Lipeeka Rout ◽  
Aniket Kumar ◽  
Rajendra S. Dhaka ◽  
Priyabrat Dash
Keyword(s):  
Reduction Method ◽  
Active Catalyst ◽  
Alloy Nanoparticles ◽  
Dicarbonyl Compounds ◽  
Highly Active ◽  
Cu Alloy ◽  
Co Reduction

Bimetallic Ag–Cu alloy nanoparticles were obtained via a simple co-reduction method, which exhibited significantly improved activity for the synthesis of β-enaminones and β-enaminoesters compared with their monometallic counterparts.

Highly efficient catalytic oxidation of 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid with bimetallic Pt-Cu alloy nanoparticles catalyst

2022 ◽  
Author(s):  
Xiaomeng Cheng ◽  
Shaopeng Li ◽  
Shulin Liu ◽  
Xin Yu ◽  
Junjuan Yang ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Copper Alloy ◽  
Active Catalyst ◽  
Alloy Nanoparticles ◽  
Turnover Frequency ◽  
High Turnover ◽  
Highly Efficient ◽  
Highly Active ◽  
Cu Alloy ◽  
Furandicarboxylic Acid

Bimetallic platinum-copper alloy nanoparticles is a highly active catalyst for the oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) under base-free conditions, with a high turnover frequency up to 135...

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.

Synthesis and Characterization of Highly Dispersed Au-Pd Alloy Nanoparticles Supported on ZrO2

2013 ◽  
Vol 716 ◽  
pp. 89-93 ◽  
Author(s):  
Wen Jing Cui ◽  
Wu Lan Ao ◽  
Yu Lin Zhang ◽  
Zhao Ri Ge Tu Bao
Keyword(s):  
Reduction Method ◽  
Preparation Method ◽  
Catalytic Properties ◽  
Alloy Nanoparticles ◽  
Highly Active ◽  
Highly Dispersed ◽  
Pd Alloy ◽  
Protection Agent ◽  
Alloy Catalyst

This paper investigated Au-Pd/ZrO2alloy catalyst prepared by solution reduction method using NaBH4as reducing agent and L-lysine as protection agent. TEM, EDX, XRD, UV-Vis and XPS were employed to investigate the morphology, composition, dispersity and catalytic properties of the catalyst. The results show that Au-Pd/ZrO2alloy catalyst is uniform and highly dispersed. Furthermore, this preparation method leads to highly active Au-Pd/ZrO2alloy catalyst for the selective oxidation of benzyl alcohol.

scholarly journals Spectroscopic Analysis of Au-Cu Alloy Nanoparticles of Various Compositions Synthesized by a Chemical Reduction Method

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Latif-ur-Rahman ◽  
Afzal Shah ◽  
Rumana Qureshi ◽  
Sher Bahadar Khan ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Average Diameter ◽  
Alloy Nanoparticles ◽  
X Ray Diffraction ◽  
Chemical Reduction Method ◽  
Cu Alloy ◽  
Sem And Tem ◽  
Number Of Binding Sites ◽  
Free Energy Of Binding

Au-Cu alloy nanoparticles were synthesized by a chemical reduction method. Five samples having different compositions of Au and Cu (Au-Cu 3 : 1, Au-Cu 2 : 1, Au-Cu 1 : 1, Au-Cu 1 : 2, and Au-Cu 1 : 3) were prepared. The newly synthesized nanoparticles were characterized by electronic absorption, fluorescence, and X-ray diffraction spectroscopy (XRD). These alloy nanoparticles were also analyzed by SEM and TEM. The particle size was determined by SEM and TEM and calculated by Debye Scherrer’s equation as well. The results revealed that the average diameter of nanoparticles gets lowered from 80 to 65 nm as the amount of Cu is increased in alloy nanoparticles. Some physical properties were found to change with change in molar composition of Au and Cu. Most of the properties showed optimum values for Au-Cu alloy nanoparticles of 1 : 3. Cu in Au-Cu alloy caused decrease in the intensity of the emission peak and acted as a quencher. The fluorescence data was utilized for the evaluation of number of binding sites, total number of atoms in alloy nanoparticle, binding constant, and free energy of binding while morphology was deduced from SEM and TEM.

Phase formation and stability of Ag–60 at%Cu alloy nanoparticles synthesized by chemical routes in aqueous media

2017 ◽  
Vol 19 (41) ◽  
pp. 28006-28013
Author(s):  
Kirtiman Deo Malviya ◽  
Chandan Srivastava ◽  
Kamanio Chattopadhyay
Keyword(s):  
Aqueous Medium ◽  
Phase Formation ◽  
Metal Salt ◽  
Aqueous Media ◽  
Alloy Nanoparticles ◽  
Cu Alloy ◽  
Co Reduction

The present work reports the nature of the evolution of an array of nanoparticles during the synthesis of alloy nanoparticles of Ag–60 at%Cu by the co-reduction of metal salt precursors using NaBH4 in an aqueous medium.

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...

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