Ammonia synthesis over Co–Mo alloy nanoparticle catalyst prepared via sodium naphthalenide-driven reduction

2016 ◽  
Vol 52 (100) ◽  
pp. 14369-14372 ◽  
Author(s):  
Yuki Tsuji ◽  
Masaaki Kitano ◽  
Kazuhisa Kishida ◽  
Masato Sasase ◽  
Toshiharu Yokoyama ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ammonia Synthesis ◽  
Alloy Nanoparticles ◽  
Bimetallic Alloy ◽  
Sodium Naphthalenide ◽  
Nanoparticle Catalyst

Co–Mo bimetallic alloy nanoparticles immobilized on CeO2 prepared via sodium naphthalenide-driven reduction exhibit efficient and stable catalytic activity for ammonia synthesis.

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.

scholarly journals Highly efficient hydrogen generation from formic acid using a reduced graphene oxide-supported AuPd nanoparticle catalyst

2016 ◽  
Vol 52 (22) ◽  
pp. 4171-4174 ◽  
Author(s):  
Xinchun Yang ◽  
Pradip Pachfule ◽  
Yao Chen ◽  
Nobuko Tsumori ◽  
Qiang Xu
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Formic Acid ◽  
Reduced Graphene Oxide ◽  
Noble Metal ◽  
Hydrogen Generation ◽  
Alloy Nanoparticles ◽  
Reduced Graphene ◽  
Highly Dispersed ◽  
Nanoparticle Catalyst

Highly dispersed AuPd alloy nanoparticles have been successfully immobilized on reduced graphene oxide using a facile non-noble metal sacrificial method, which exhibit the highest catalytic activity for dehydrogenation of formic acid at 323 K.

Determination of surface composition of alloy nanoparticles and relationships with catalytic activity in Pd–Cu/SiO2 cogelled xerogel catalysts

2004 ◽  
Vol 270 (1-2) ◽  
pp. 201-208 ◽  
Author(s):  
Stéphanie Lambert ◽  
Benoı̂t Heinrichs ◽  
Alain Brasseur ◽  
André Rulmont ◽  
Jean-Paul Pirard
Keyword(s):  
Catalytic Activity ◽  
Surface Composition ◽  
Alloy Nanoparticles

Monodispersed palladium–cobalt alloy nanoparticles assembled on poly(N-vinyl-pyrrolidone) (PVP) as a highly effective catalyst for dimethylamine borane (DMAB) dehydrocoupling

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24097-24102 ◽  
Author(s):  
Betül Çelik ◽  
Yunus Yıldız ◽  
Hakan Sert ◽  
Esma Erken ◽  
Yagmur Koşkun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Performance ◽  
Vinyl Pyrrolidone ◽  
Alloy Nanoparticles ◽  
Turnover Frequency ◽  
Cobalt Alloy ◽  
High Turnover ◽  
Effective Catalyst ◽  
Dimethylamine Borane ◽  
Very High

Monodispersed PdCo@PVP NPs showed record catalytic activity, giving the best catalytic performance yet with a very high turnover frequency.

scholarly journals First synthesis of air-stable NiZn homogeneous alloy nanoparticles through chemical reduction

2021 ◽  
Author(s):  
Shinya Okamoto ◽  
Kohei Kusada ◽  
Hiroshi Hashiba ◽  
Satoshi Yotsuhashi ◽  
Hiroshi Kitagawa
Keyword(s):  
Chemical Reduction ◽  
Alloy Nanoparticles ◽  
Sodium Naphthalenide ◽  
Zn Ions

Air-stable NiZn homogeneous alloy nanoparticles were synthesized by sodium–naphthalenide-driven reduction at the controlled reduction speed of Ni and Zn ions.

3D Porous Nb2C MXene/Reduced Graphene Oxide Aerogel Coupled with NiFe Alloy Nanoparticles for Wearable Zn–Air Batteries

2021 ◽  
Author(s):  
Hang Lei ◽  
Shangjing Yang ◽  
Runquan Lei ◽  
Qing Zhong ◽  
Qixiang Wan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Active Sites ◽  
Alloy Nanoparticles ◽  
Reduced Graphene ◽  
Reduced Graphene Oxide Aerogel ◽  
Graphene Oxide Aerogel ◽  
Catalytic Processes

Insufficient catalytic activity and self-restacking of 2D MXenes during catalytic processes would lead to limited number of active sites, sluggish ionic kinetics and poor durability, extremely restricting its application in...

Insight into the binding and conformational changes of hemoglobin/lysozyme with bimetallic alloy nanoparticles using various spectroscopic approaches

2020 ◽  
Vol 300 ◽  
pp. 111747
Author(s):  
Krishnamoorthy Shanmugaraj ◽  
Arumugam Selva Sharma ◽  
Thangarasu Sasikumar ◽  
Ramalinga Viswanathan Mangalaraja ◽  
Malaichamy Ilanchelian
Keyword(s):  
Conformational Changes ◽  
Alloy Nanoparticles ◽  
Bimetallic Alloy ◽  
Insight Into

Synergism of ultrafine RuCo alloy nanoparticles on graphite carbon nitride for efficient ammonia borane hydrolysis

2021 ◽  
Author(s):  
Yating He ◽  
Ziqian Wang ◽  
Mingyue Mao ◽  
Qianggen Li ◽  
Guangyin Fan
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Ammonia Borane ◽  
Alloy Nanoparticles ◽  
Bimetallic Alloy ◽  
Catalytic Sites

Ru-based bimetallic alloy nanoparticles (NPs) have been demonstrated as efficiently catalytic sites for hydrogen evolution from ammonia borane (AB) hydrolysis, but their facile syntheses with ultrafine sizes and superior activity...

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