Simple preparation method of Pd nanoparticles on an Au electrode and its catalysis for dioxygen reductionElectronic supplementary information (ESI) available: XRD pattern of an evaporated Au electrode and CVs for the reduction of O2 on a bare Au(111) electrode or a Pd-nanoparticle-film-modified electrode. See: http://www.rsc.org/suppdata/nj/b3/b300566f/

2003 ◽  
Vol 27 (6) ◽  
pp. 938 ◽  
Author(s):  
Yan Shen ◽  
Lihua Bi ◽  
Baifeng Liu ◽  
Shaojun Dong
Keyword(s):  
Modified Electrode ◽  
Preparation Method ◽  
Pd Nanoparticles ◽  
Supplementary Information ◽  
Xrd Pattern ◽  
Au Electrode ◽  
Pd Nanoparticle ◽  
Simple Preparation ◽  
Nanoparticle Film

Simple Preparation Method of Multilayer Polymer Films Containing Pd Nanoparticles

Langmuir ◽  
2001 ◽  
Vol 17 (22) ◽  
pp. 6747-6750 ◽  
Author(s):  
Jianyun Liu ◽  
Long Cheng ◽  
Yonghai Song ◽  
Baifeng Liu ◽  
Shaojun Dong
Keyword(s):  
Polymer Films ◽  
Preparation Method ◽  
Pd Nanoparticles ◽  
Simple Preparation

Scanning electron microscopy of human iliac bone by a simple preparation method

1990 ◽  
Vol 48 (3) ◽  
pp. 226-227
Author(s):  
Toshihiko Takita ◽  
Tomonori Naguro ◽  
Toshio Kameie ◽  
Akihiro Iino ◽  
Kichizo Yamamoto
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Preparation Method ◽  
Specimen Preparation ◽  
Real Surface ◽  
Public Attention ◽  
Preparation Methods ◽  
The Real ◽  
Simple Preparation ◽  
Scanning Electron

Recently with the increase in advanced age population, the osteoporosis becomes the object of public attention in the field of orthopedics. The surface topography of the bone by scanning electron microscopy (SEM) is one of the most useful means to study the bone metabolism, that is considered to make clear the mechanism of the osteoporosis. Until today many specimen preparation methods for SEM have been reported. They are roughly classified into two; the anorganic preparation and the simple preparation. The former is suitable for observing mineralization, but has the demerit that the real surface of the bone can not be observed and, moreover, the samples prepared by this method are extremely fragile especially in the case of osteoporosis. On the other hand, the latter has the merit that the real information of the bone surface can be obtained, though it is difficult to recognize the functional situation of the bone.

scholarly journals Pd Nanoparticles Stabilized by Hypercrosslinked Polystyrene Catalyze Selective Triple C-C Bond Hydrogenation and Suzuki Cross-Coupling

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Linda Zh. Nikoshvili ◽  
Nadezhda A. Nemygina ◽  
Tatiana E. Khudyakova ◽  
Irina Yu. Tiamina ◽  
Alexey V. Bykov ◽  
...  
Keyword(s):  
Phase Transfer ◽  
Aryl Halide ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Hypercrosslinked Polystyrene ◽  
Reductive Activation ◽  
Pd Nanoparticle ◽  
Cross Coupling Reaction ◽  
Precursor Decomposition

This paper describes the synthesis of Pd-containing catalysts based on nonfunctionalized hypercrosslinked polystyrene via impregnation with Pd acetate. Developed Pd nanoparticulate catalyst allowed achieving conversion of aryl halide up to 90% in Suzuki cross-coupling reaction under mild conditions and at the absence of phase-transfer agents. During the selective hydrogenation of triple C-C bond of 2-methyl-3-butyn-2-ol, up to 96% selectivity with respect to corresponding olefinic alcohol was found at 95% conversion. The influences of the procedure of catalyst synthesis like precursor decomposition and reductive activation method on Pd nanoparticle formation are discussed.

Direct Determination of Uric Acid Based on Pd Nanoparticles Electrodepositing onto Anatase-Type TiO2Nanoparticles/Chitsan Film-Modified Electrode

2008 ◽  
Vol 41 (15) ◽  
pp. 2860-2876 ◽  
Author(s):  
Lin Tan ◽  
Guang-Ming Yang ◽  
Ping Wang ◽  
Zong-Yuan Xie ◽  
Hui-Ping Bai ◽  
...  
Keyword(s):  
Uric Acid ◽  
Modified Electrode ◽  
Direct Determination ◽  
Pd Nanoparticles

Three-dimensionally ordered mesoporous multicomponent (Ni, Mo) metal oxide/N-doped carbon composite with superior Li-ion storage performance

Nanoscale ◽  
2018 ◽  
Vol 10 (39) ◽  
pp. 18734-18741 ◽  
Author(s):  
Se Hwan Oh ◽  
Jin Koo Kim ◽  
Yun Chan Kang ◽  
Jung Sang Cho
Keyword(s):  
Metal Oxides ◽  
Preparation Method ◽  
Carbon Composite ◽  
Pyrolysis Process ◽  
Storage Performance ◽  
Simple Preparation ◽  
Ordered Mesoporous ◽  
Ion Storage ◽  
Li Ion ◽  
Spray Pyrolysis Process

A simple preparation method of mesoporous multicomponent metal oxides containing Ni and Mo components with N-doped carbon by spray pyrolysis process is introduced.

Optimization Design of Electrochemical Biosensors Based on Gold Nanomaterials

2020 ◽  
Vol 12 (9) ◽  
pp. 1079-1086
Author(s):  
Haitao Hao
Keyword(s):  
Modified Electrode ◽  
Optimization Design ◽  
Electrochemical Biosensor ◽  
Design Method ◽  
High Sensitivity ◽  
Dna Biosensor ◽  
Gold Nanorod ◽  
Simple Preparation ◽  
Optimal Design Method ◽  
Gold Nanomaterials

At present, chemical biosensors still have poor reproducibility and stability due to that the density of nanomaterials particles is not ideal. Therefore, an optimal design method of electrochemical biosensor based on gold nanomaterials is proposed. Two types of sensors, namely DNA biosensor and immune biosensor, were designed in this work. A DNA biosensor with gold nanorod nanocomposite modified electrode was prepared, and its electrical activity was measured by Methylene blue. In contrast, an electrochemical immune sensor with gold nanorod-modified electrode was prepared and used for detection of alpha fetoprotein. The experimental results show that the designed DNA biosensor and electrochemical immune sensor have the advantages of simple preparation, high sensitivity, good selectivity and good stability.

High Catalytic Activity of Pd Nanoparticles Synthesized from Green Alga Chlorella vulgaris in Buchwald-hartwig Synthesis of N-Aryl Piperazines

2019 ◽  
Vol 7 (1) ◽  
pp. 23-33
Author(s):  
Vaibhav Mishra ◽  
Anju Arya ◽  
Tejpal Singh Chundawat
Keyword(s):  
Catalytic Activity ◽  
Green Alga ◽  
Chlorella Vulgaris ◽  
Direct Synthesis ◽  
Coupling Reaction ◽  
Pd Nanoparticles ◽  
High Catalytic Activity ◽  
Pd Nanoparticle ◽  
Green Algal ◽  
Green Alga Chlorella

Background: The N-aryl piperazines are an important component of many drug products used for the treatment of malaria, depression, anxiety and Parkinson diseases. Buchwald-Hartwig amination is the latest and well-known reaction for Pd catalyzed direct synthesis of N-aryl piperazine from aryl halides. Although several Pd-ligand systems have already been discovered for this conversion, Pd nanoparticles are recently being used for this useful coupling reaction due to their recyclability and durability. Metal nanoparticles show enhanced catalytic activity compared to their bulk counterparts due to increased surface area at the edges and corners. The use of green algal extract in place of chemical ligands makes this process more environment-friendly and cost-effective. In this research, Pd nanoparticles synthesized using green alga C. Vulgaris were utilized as an alternative approach for the coupling reaction during the preparation of N-aryl piperazines. Methods: Synthesized Pd nanoparticles from C. Vulgaris were characterized by FTIR, SEM and XRD techniques. The catalytic activity of the synthesized nanoparticles was monitored for the synthesis of N-aryl piperazines by Buchwald-Hartwig reaction. The synthesized N-aryl piperazines were characterized by NMR, FTIR and mass analysis. Results: A very good catalytic activity of the synthesized Pd nanoparticles from green alga Chlorella vulgaris extract was observed. The green alga not only reduces the size of the Pd metal to nanoparticles but also acts as a green ligand for reduction of Pd(II) to Pd(0) during nanoparticle synthesis. Using this Pd nanoparticles-green ligand system, several N-aryl piperazines were synthesized in good to excellent yields. Reaction conditions for better conversion were optimized. The comparative advantage of the catalytic system with recently published works on Buchwald-Hartwig C-N coupling reaction is given. Recyclability and durability of the catalyst were explored and the results were found to be promising. A plausible mechanism of Pd nanoparticle catalyzed reaction is also proposed. Conclusion: Catalytic activity of the Pd nanoparticle synthesized from Chlorella vulagris in the synthesis of N-aryl piperazines by Buchwald-Hartwig reaction is reported first time to the best of our knowledge and understanding. The green approach of Pd catalyst to facilitate the reaction and its environmental impact is the main characteristic of the process.

A simple preparation method for superhydrophobic surface on silicon rubber and its properties

2020 ◽  
Vol 143 ◽  
pp. 105612 ◽  
Author(s):  
Xinyu Zhou ◽  
Guangfei Wang ◽  
Meimei Wang ◽  
Yu Zhang ◽  
Wanlei Yin ◽  
...  
Keyword(s):  
Superhydrophobic Surface ◽  
Preparation Method ◽  
Silicon Rubber ◽  
Simple Preparation
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