scholarly journals Bare laser-synthesized palladium–gold alloy nanoparticles as efficient electrocatalysts for glucose oxidation for energy conversion applications

2020 ◽  
Vol 10 (23) ◽  
pp. 7955-7964
Author(s):  
Yaovi Holade ◽  
Seydou Hebié ◽  
Ksenia Maximova ◽  
Marc Sentis ◽  
Philippe Delaporte ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Energy Conversion ◽  
Glucose Oxidation ◽  
Gold Alloy ◽  
Synergetic Effect ◽  
High Catalytic Activity ◽  
Alloy Nanoparticles ◽  
Pdau Nanoparticles

Laser-synthesized PdAu nanoparticles demonstrate a strong synergetic effect on glucose oxidation combining high catalytic activity with ultrafast kinetics at low potentials.

Hollow structured CoSn(OH)6-supported Pt for effective room-temperature oxidation of gaseous formaldehyde

2016 ◽  
Vol 09 (06) ◽  
pp. 1642009 ◽  
Author(s):  
Jing Zhou ◽  
Yong Zhao ◽  
Lifan Qin ◽  
Chen Zeng ◽  
Wei Xiao
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
Room Temperature ◽  
Synergetic Effect ◽  
Hollow Structure ◽  
Pt Nanoparticles ◽  
Hydroxyl Groups ◽  
High Catalytic Activity ◽  
Temperature Oxidation ◽  
X Ray

Uniform CoSn(OH)6 hollow nanoboxes and the derivative with Pt loading (Pt/CoSn(OH)6) were herein synthesized and characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). SEM and TEM analyses showed that CoSn(OH)6 possessed mesoporous hollow structure and Pt nanoparticles with size of 2–8[Formula: see text]nm were uniformly dispersed on the surface of CoSn(OH)6 nanoboxes. The performances of the catalysts for the formaldehyde (HCHO) removal at room temperature were evaluated. These Pt/CoSn(OH)6 catalysts exhibited a remarkable catalytic activity as well as stability for room-temperature oxidative decomposition of gaseous HCHO, while the corresponding CoSn(OH)6 only showed adsorption. The synergetic effect between the highly dispersed Pt nanoparticles and the CoSn(OH)6 nanoboxes with mesoporous hollow structure, a large surface area and abundant surface hydroxyl groups is considered to be the main reason for the observed high catalytic activity of Pt/CoSn(OH)6.

PtAu alloy nanoparticles supported on thermally expanded graphene oxide as a catalyst for the selective oxidation of glycerol

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37112-37118 ◽  
Author(s):  
Gao-Yuan Yang ◽  
Shuai Shao ◽  
Yi-Hu Ke ◽  
Chun-Ling Liu ◽  
Hui-Fang Ren ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Selective Oxidation ◽  
High Catalytic Activity ◽  
Alloy Nanoparticles

Thermally expanded graphene oxide supported PtAu alloy nanoparticles showed high catalytic activity in the oxidation of glycerol in base-free aqueous solution.

Fabrication of hollow Cu2O@CuO-supported Au–Pd alloy nanoparticles with high catalytic activity through the galvanic replacement reaction

2015 ◽  
Vol 3 (8) ◽  
pp. 4578-4585 ◽  
Author(s):  
Wang Yao ◽  
Fei-Long Li ◽  
Hong-Xi Li ◽  
Jian-Ping Lang
Keyword(s):  
Catalytic Activity ◽  
Catalytic Performance ◽  
Galvanic Replacement ◽  
High Catalytic Activity ◽  
Alloy Nanoparticles ◽  
Galvanic Replacement Reaction ◽  
Replacement Reaction ◽  
Pd Alloy ◽  
Excellent Catalytic Performance

Cu2O@CuO-supported Au–Pd alloy nanoparticles prepared through the galvanic replacement approach exhibit an excellent catalytic performance in reducing 4-nitrophenol to 4-aminophenol.

Synthesis of Ni-Ru Alloy Nanoparticles and Their High Catalytic Activity in Dehydrogenation of Ammonia Borane

2012 ◽  
Vol 18 (25) ◽  
pp. 7925-7930 ◽  
Author(s):  
Guozhu Chen ◽  
Stefano Desinan ◽  
Renzo Rosei ◽  
Federico Rosei ◽  
Dongling Ma
Keyword(s):  
Catalytic Activity ◽  
Ammonia Borane ◽  
High Catalytic Activity ◽  
Alloy Nanoparticles

scholarly journals Synthesis of Au–Cu Alloy Nanoparticles as Peroxidase Mimetics for H2O2 and Glucose Colorimetric Detection

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 343
Author(s):  
Cun Liu ◽  
Sang Hyuk Im ◽  
Taekyung Yu
Keyword(s):  
Catalytic Activity ◽  
Limit Of Detection ◽  
Colorimetric Detection ◽  
Molar Ratio ◽  
High Catalytic Activity ◽  
Alloy Nanoparticles ◽  
Research Fields ◽  
Cu Alloy ◽  
Bimetallic Alloy ◽  
Mediated Oxidation

The detection of hydrogen peroxide (H2O2) is essential in many research fields, including medical diagnosis, food safety, and environmental monitoring. In this context, Au-based bimetallic alloy nanomaterials have attracted increasing attention as an alternative to enzymes due to their superior catalytic activity. In this study, we report a coreduction synthesis of gold–copper (Au–Cu) alloy nanoparticles in aqueous phase. By controlling the amount of Au and Cu precursors, the Au/Cu molar ratio of the nanoparticles can be tuned from 1/0.1 to 1/2. The synthesized Au–Cu alloy nanoparticles show good peroxidase-like catalytic activity and high selectivity for the H2O2-mediated oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB, colorless) to TMB oxide (blue). The Au–Cu nanoparticles with an Au/Cu molar ratio of 1/2 exhibit high catalytic activity in the H2O2 colorimetric detection, with a limit of detection of 0.141 μM in the linear range of 1–10 μM and a correlation coefficient R2 = 0.991. Furthermore, the Au–Cu alloy nanoparticles can also efficiently detect glucose in the presence of glucose oxidase (GOx), and the detection limit is as low as 0.26 μM.

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