نتایج جستجو برای: palladium nanoparticles

تعداد نتایج: 118220  

2013
Nana Cheng Hongjuan Wang Xiaomeng Li Xiaoyang Yang Liande Zhu

We report on a new type of amperometric glucose biosensor that was made by integration of glucose oxidase (GOD) with palladium nanoparticles/reduce graphene oxide (Pd/RGO) nanocomposite. The Pd/RGO was prepared by a onestep reduction method in which the palladium nanoparticles and the reduced graphene oxide (RGO) were simultaneously accomplished from the reduction of dispersed solution of PdCl2...

Journal: :Dalton transactions 2011
Yinghuai Zhu Li Chuanzhao Algin Oh Biying Meriska Sudarmadji Anqi Chen Dang Thanh Tuan Abdul M Seayad

Well-dispersed palladium (0) nanoparticles stabilized with phosphonium based ionic liquid were synthesized conveniently and fully characterized. A catalyst system comprising of the Pd(0) nanoparticles and a base was found to be recyclable and efficient for the aminocarbonylation reaction of aryl iodide in ionic liquid media. In the presence of potassium tert-butyloxide, for the relatively stabl...

Journal: :Nanotechnology 2015
Xiangyi Luo Mar Piernavieja-Hermida Jun Lu Tianpin Wu Jianguo Wen Yang Ren Dean Miller Zhigang Zak Fang Yu Lei Khalil Amine

Uniformly dispersed Pd nanoparticles on ZnO-passivated porous carbon were synthesized via an atomic layer deposition (ALD) technique, which was tested as a cathode material in a rechargeable Li-O2 battery, showing a highly active catalytic effect toward the electrochemical reactions-in particular, the oxygen evolution reaction. Transmission electron microscopy (TEM) showed discrete crystalline ...

Journal: :Molecules 2011
Atsushi Ohtaka Tomohiro Yamaguchi Takuto Teratani Osamu Shimomura Ryôki Nomura

Linear polystyrene-stabilized PdO nanoparticles (PS-PdONPs) were prepared by thermal decomposition of Pd(OAc)(2) in the presence of polystyrene. X-ray diffraction (XRD) and transmission electron microscopy (TEM) indicated the production of PdO nanoparticles. The loading of palladium was determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). PS-PdONPs exhibited high cat...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2008
Elena Badetti Anne-Marie Caminade Jean-Pierre Majoral Marcial Moreno-Mañas Rosa M Sebastian

A new family of phosphorus dendrimers containing on their surfaces 3, 6, 12, and 96 15-membered azamacrocycles has been synthesized. The coordinating ability of these macrocycles to palladium(0) atoms allowed the preparation of new dendrimers of several generations containing the corresponding metal complexes and several new nanoparticulated materials, where nanoparticles are stabilized mainly ...

2014
Sudong Yang Jing Dong Zhaohui Yao Chengmin Shen Xuezhao Shi Yuan Tian Shaoxiong Lin Xiaogang Zhang

To synthesize monodisperse palladium nanoparticles dispersed on reduced graphene oxide (RGO) sheets, we have developed an easy and scalable solvothermal reduction method from an organic solution system. The RGO-supported palladium nanoparticles with a diameter of 3.8 nm are synthesized in N-methyl-2-pyrrolidone (NMP) and in the presence of oleylamine and trioctylphosphine, which facilitates sim...

Journal: :Dalton transactions 2013
Christopher S Hinde Sivan Van Aswegen Gillian Collins Justin D Holmes T S Andy Hor Robert Raja

A novel method for the in situ generation of catalytically active small metal nanoparticles, by anion extrusion on a parent porous copper chloropyrophosphate framework, has been developed to generate gold, platinum and palladium nanoparticles for sustainable catalytic oxidations using molecular oxygen as the oxidant. Transmission electron microscopy coupled with detailed structural and physico-...

2009
Yu-Zhi Hao Yu-Long Zhang Li-Hua Wang Xiao-Yan Ju

The supported palladium nanoparticles catalyst with uniform-sized Pd particles distribution and without nitrogen or chlorine atoms present in catalyst was prepared by calcination of the supported [Pd(lysine·HCl)(Cl)2] complex as precursor and characterized by TEM. Moreover the supported [Pd(lysine·HCl)(Cl)2] complex was from cation exchanging [Pd(lysine·HCl)(Cl)2] complex with inorganic support...

Journal: :Organic & biomolecular chemistry 2010
Subhash Banerjee Vagulejan Balasanthiran Ranjit T Koodali Grigoriy A Sereda

A novel, heterogeneous Pd-MCM-48 catalyst has been developed by encapsulating palladium nanoparticles into the cubic phase of mesoporous MCM-48 matrix at room temperature. The catalyst demonstrated excellent chemo- and regioselectivity for the hydrogenation of olefins at room temperature within 30-80 min. The turnover frequency for the hydrogenation is very high (4400 h(-1)). Interestingly, sel...

Journal: :Angewandte Chemie 2014
Jinfa Chang Ligang Feng Changpeng Liu Wei Xing Xile Hu

The direct formic acid fuel cell is an emerging energy conversion device for which palladium is considered as the state-of-the-art anode catalyst. In this communication, we show that the activity and stability of palladium for formic acid oxidation can be significantly enhanced using nickel phosphide (Ni(2)P) nanoparticles as a cocatalyst. X-ray photoelectron spectroscopy (XPS) reveals a strong...

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