scholarly journals Highly efficient non-noble metallic NiCu nanoalloy catalysts for hydrogenation of nitroarenes

2021 ◽  
Author(s):  
Yao Sheng ◽  
Xinrui Lin ◽  
Shengnan Yue ◽  
Yang Liu ◽  
Xiujing Zou ◽  
...  
Keyword(s):  
Nickel Nitrate ◽  
Alloy Nanoparticles ◽  
Mixed Solution ◽  
Carbon Doped ◽  
Cupric Nitrate ◽  
Highly Efficient ◽  
Highly Dispersed ◽  
One Step ◽  
The One

Highly dispersed NiCu alloy nanoparticles supported on carbon-doped silica (NiCu/C@SiO2) were first prepared through the one-step impregnation with a mixed solution of nickel nitrate, cupric nitrate and glucose, followed by...

scholarly journals One-Step Synthesis of Highly Dispersed and Stable Ni Nanoparticles Confined by CeO2 on SiO2 for Dry Reforming of Methane

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5956
Author(s):  
Chengyang Zhang ◽  
Renkun Zhang ◽  
Hui Liu ◽  
Qinhong Wei ◽  
Dandan Gong ◽  
...  
Keyword(s):  
Carbon Deposition ◽  
Combustion Method ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Solution Combustion ◽  
Spatial Confinement ◽  
Oxide Interfaces ◽  
Highly Dispersed ◽  
One Step ◽  
The One

Sintering and carbon deposition are the two main ways to deactivate Ni-based catalysts during methane reforming. Herein, a stable Ni-CeO2/SiO2(CSC) catalyst was prepared by a one-step colloidal solution combustion method (CSC) and used for dry reforming of methane. In the catalyst, the small Ni particles were confined by CeO2 particles and highly dispersed on the surface of SiO2, forming a spatial confinement structure with a rich Ni-CeO2 interface in the catalyst. The Ni-CeO2/SiO2(CSC) catalyst prepared by the one-step CSC method exhibited superior activity at 700 °C during dry reforming of methane, and the performance of the catalyst was stable after 20 h of reaction with only a small amount of carbon deposition present (1.8%). Due to the spatial confinement effect, Ni was stable and less than 5 nm during reaction. The small Ni particle size and rich Ni-CeO2 interface reduced the rate of carbon deposition. This colloidal combustion method could be applied to prepare stable metal-based catalysts with rich metal–oxide interfaces for high-temperature reactions.

Cu nanoclusters supported on nanocrystalline SiO2–MnO2: a bifunctional catalyst for the one-step conversion of glycerol to acrylic acid

2014 ◽  
Vol 50 (68) ◽  
pp. 9707-9710 ◽  
Author(s):  
Bipul Sarkar ◽  
Chandrashekar Pendem ◽  
L. N. Sivakumar Konathala ◽  
Ritesh Tiwari ◽  
Takehiko Sasaki ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Bifunctional Catalyst ◽  
Highly Dispersed ◽  
One Step ◽  
The One ◽  
Cu Nanoclusters

A material of highly dispersed Cu nanoclusters anchored on nanocrystalline SiO2–MnO2 has been prepared, and was found to act as a bifunctional catalyst for the one-step conversion of glycerol to acrylic acid using H2O2.

Investigation of pyrolysis temperature in the one-step synthesis of L10 FePt nanoparticles from a FePt-containing metallopolymer

2015 ◽  
Vol 3 (4) ◽  
pp. 734-741 ◽  
Author(s):  
Qingchen Dong ◽  
Guijun Li ◽  
Hua Wang ◽  
Philip Wing-Tat Pong ◽  
Chi-Wah Leung ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Pyrolysis Temperature ◽  
Single Step ◽  
Fept Nanoparticles ◽  
Alloy Nanoparticles ◽  
Fept Alloy ◽  
One Step ◽  
The One

Ferromagnetic (L10 phase) FePt alloy nanoparticles (NPs) can be generated by single-step pyrolysis of metallopolymers. The influence of the pyrolysis temperature on the size and magnetic properties of these NPs were investigated.

scholarly journals High acidity cellulose sulfuric acid from sulfur trioxide: a highly efficient catalyst for the one step synthesis of xanthene and dihydroquinazolinone derivatives

RSC Advances ◽  
2019 ◽  
Vol 9 (49) ◽  
pp. 28718-28723 ◽  
Author(s):  
Xiaofei Yue ◽  
Zhiqiang Wu ◽  
Gang Wang ◽  
Yanping Liang ◽  
Yanyan Sun ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Sulfur Trioxide ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
High Acidity ◽  
One Step ◽  
The One

The HS-cellulose sulfonate catalysed green and efficient one-step synthesis of xanthene and dihydroquinazolinone derivatives.

Carbon nitride supported AgPd alloy nanocatalysts for dehydrogenation of formic acid under visible light

2017 ◽  
Vol 5 (14) ◽  
pp. 6382-6387 ◽  
Author(s):  
Liping Xiao ◽  
Young-Si Jun ◽  
Binghui Wu ◽  
Deyu Liu ◽  
Tracy T Chuong ◽  
...  
Keyword(s):  
Formic Acid ◽  
Visible Light ◽  
Carbon Nitride ◽  
Room Temperature ◽  
Ambient Condition ◽  
Alloy Nanoparticles ◽  
Highly Active ◽  
One Step ◽  
The One ◽  
Temperature Preparation

We report a facile approach for the one-step room-temperature preparation of nearly monodisperse AgPd alloy nanoparticles supported on semiconductor graphitic carbon nitride (g-CN). The AgPd/g-CN nanocatalysts are highly active and durable for dehydrogenation of formic acid under visible light or dark at ambient condition.

Polydopamine-functionalized multi-walled carbon nanotubes-supported palladium–lead bimetallic alloy nanoparticles as highly efficient and robust catalysts for ethanol oxidation

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90462-90469 ◽  
Author(s):  
Honglei Yang ◽  
Siyi Kang ◽  
Hai Zou ◽  
Jun Jin ◽  
Jiantai Ma ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
Ethanol Oxidation ◽  
Alloy Nanoparticles ◽  
Highly Efficient ◽  
Bimetallic Alloy ◽  
Multi Walled Carbon Nanotubes ◽  
One Step ◽  
Supported Palladium ◽  
Walled Carbon Nanotubes

High performance electrocatalysts of palladium–lead bimetallic alloy nanoparticles anchored onto polydopamine-functionalized multi-walled carbon nanotubes (PDA-MWCNTs) were fabricated by a facile one-step strategy.

A Study on the Rearrangement of Dialkyl 1-Aryl-1-hydroxymethylphosphonates to Benzyl Phosphates

2020 ◽  
Vol 24 (4) ◽  
pp. 465-471 ◽  
Author(s):  
Zita Rádai ◽  
Réka Szabó ◽  
Áron Szigetvári ◽  
Nóra Zsuzsa Kiss ◽  
Zoltán Mucsi ◽  
...  
Keyword(s):  
Quantum Chemical ◽  
Room Temperature ◽  
Phase Transfer ◽  
One Pot ◽  
Substrate Dependence ◽  
Triethylbenzylammonium Chloride ◽  
One Step ◽  
The Pudovik Reaction ◽  
The One ◽  
Solid Liquid

The phospha-Brook rearrangement of dialkyl 1-aryl-1-hydroxymethylphosphonates (HPs) to the corresponding benzyl phosphates (BPs) has been elaborated under solid-liquid phase transfer catalytic conditions. The best procedure involved the use of triethylbenzylammonium chloride as the catalyst and Cs2CO3 as the base in acetonitrile as the solvent at room temperature. The substrate dependence of the rearrangement has been studied, and the mechanism of the transformation under discussion was explored by quantum chemical calculations. The key intermediate is an oxaphosphirane. The one-pot version starting with the Pudovik reaction has also been developed. The conditions of this tandem transformation were the same, as those for the one-step HP→BP conversion.

Controllable Electrochemical Synthesis of Ag Hierarchical Micro/Nanostructures with High SERS-Activity

NANO ◽  
2020 ◽  
Vol 15 (04) ◽  
pp. 2050043
Author(s):  
Huayu Zhou ◽  
Jingjing Wang ◽  
Qiong Yang ◽  
Menglei Chen ◽  
Changsheng Song ◽  
...  
Keyword(s):  
Indium Tin Oxide ◽  
Current System ◽  
Three Dimensional ◽  
Constant Current ◽  
Localized Surface Plasmon ◽  
Excitation Wavelength ◽  
Raman Signal ◽  
Mixed Solution ◽  
Raman Enhancement ◽  
One Step

We report a one-step electrochemical deposition technique to prepare three-dimensional (3D) Ag hierarchical micro/nanostructured film consisting of well-crystallized Ag nanosheets grown on an indium tin oxide (ITO) conductive substrate. The Ag hierarchical micro/nanostructures were fabricated in the mixed solution of AgNO3 and sodium citrate in a constant current system at room temperature. Through reduction of Ag[Formula: see text] electrodeposited on the surface of ITO substrate, nanoparticles were grown to form nanosheets which further combined into 3D sphere-like microstructures. The 3D Ag micro/nanostructures have many sharp edges and nanoscale gaps which can give rise to good Raman-enhanced effect. Due to localized surface plasmon resonance (LSPR) effects, these special Ag micro/nanostructures exhibited good Raman-enhanced performance. Using Rhodamine 6G (R6G) molecules as probe molecule, we studied the influence of excitation wavelength on Raman enhancement. The results showed that the 532[Formula: see text]nm excitation wavelength is the best to obtain the strongest Raman signal and to reduce the influence of other impurity peaks. Using the as-synthesized Ag hierarchical micro/nanostructures, we can detect the 10[Formula: see text][Formula: see text]mol/L R6G aqueous solution, exhibiting great Raman-enhanced effect.

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