نتایج جستجو برای: nanocatalyst

تعداد نتایج: 905  

Journal: :Molecules 2010
Antonio Monopoli Angelo Nacci Vincenzo Calò Francesco Ciminale Pietro Cotugno Annarosa Mangone Lorena Carla Giannossa Pietro Azzone Nicola Cioffi

Palladium nanoparticles have been electrochemically supported on zirconium oxide nanostructured powders and all the nanomaterials have been characterized by several analytical techniques. The Pd/ZrO(2) nanocatalyst is demonstrated to be a very efficient catalyst in Heck, Ullmann, and Suzuki reactions of aryl halides in water. The catalyst efficiency is attributed to the stabilization of Pd nano...

Journal: :Molecules 2015
Fatemeh Rajabi Diego Alves Rafael Luque

The syntheses of quinoxalines derived from 1,2-diamine and 1,2-dicarbonyl compounds under mild reaction conditions was carried out using a nanoparticle-supported cobalt catalyst. The supported nanocatalyst exhibited excellent activity and stability and it could be reused for at least ten times without any loss of activity. No cobalt contamination could be detected in the products by AAS measure...

2011
Magda Cotman Albin Pintar

Wet hydrogen peroxide catalytic oxidation (WHPCO) is one of the most important industrially applicable advanced oxidation processes (AOPs) for the decomposition of organic pollutants in water. It is demonstrated that manganese functionalized silicate nanoparticles with interparticle porosity act as a superior Fenton-type nanocatalyst in WHPCO as they can decompose 80% of a test organic compound...

Journal: :journal of physical & theoretical chemistry 2014
mahvash khazaei mehran aghaie soroor sadeghi

alcohol oxidation is an important reaction in organic syntheses. some of these reactions must beunder difficult conditions in respect of high temperature and pressure. in many cases, reactions areconducted by environmentally in appropriate solutions. in this study, preparing an effectivenanocatalyst and estimating the optimum provisions of its production processes are assessed. twomajor and cru...

Journal: :Organic & biomolecular chemistry 2012
Babak Kaboudin Yaghoub Abedi Tsutomu Yokomatsu

We report here the one-pot synthesis of 1,2,3-triazoles of arylboronic acids in water. An efficient method has been developed for the synthesis of 1,2,3-triazoles via a one-pot reaction of an arylboronic acid with sodium azide in the presence of Cu(2)-β-CD (CD = Cyclodextrin) as a nanocatalyst in water followed by a click cyclization reaction with an alkyne at room temperature in air without an...

Journal: :Physical chemistry chemical physics : PCCP 2015
P V R K Ramacharyulu Raeesh Muhammad J Praveen Kumar G K Prasad Paritosh Mohanty

An iron(II)phthalocyanine (Fepc) modified mesoporous titania (Fepc-TiO2) nanocatalyst with a specific surface area of 215 m(2) g(-1) has been synthesized by a hydrothermal method. Fepc-TiO2 degrades one of the highly toxic chemical warfare agents, sulfur mustard (SM), photocatalytically under sunlight with an exposure time of as low as 70 min. Furthermore, the mesoporous Fepc-TiO2 also captured...

2013
ANTENEH TEFERA MOGUS MOCHENA Anteneh Tefera

Submitted for the MAR14 Meeting of The American Physical Society Chirally Selective Growth of Single Walled Carbon Nanotube on Fe13 Nanocatalyst 1 ANTENEH TEFERA, MOGUS MOCHENA, Florida A&M University — Controlled growth of single walled carbon nanotubes with desired chiral indices remains the holy grail of single walled carbon nanotube synthesis. We performed ab initio molecular dynamics calcu...

2017
Zhuojun Li Jong Kyu Kim Vrushali Chaudhari Suseeladevi Mayadevi Luiza C. Campos

Metaldehyde, an organic pesticide widely used in the UK, has been detected in drinking water in the UK with a low concentration (<1 μg L-1) which is still above the European and UK standard requirements. This paper investigates the efficiency of four materials: powdered activated carbon (PAC) and carbon-doped titanium dioxide nanocatalyst with different concentrations of carbon (C-1.5, C-40, an...

2014
Ting Liao Ziqi Sun Chenghua Sun Shi Xue Dou Debra J. Searles

Inorganic nano-graphene hybrid materials that are strongly coupled via chemical bonding usually present superior electrochemical performance. However, how the chemical bond forms and the synergistic catalytic mechanism remain fundamental questions. In this study, the chemical bonding of the MoS2 nanolayer supported on vacancy mediated graphene and the hydrogen evolution reaction of this nanocat...

Journal: :Journal of Nanomaterials 2022

The food waste management has become a very important part in the modern world. In olden days, population was low, so that low produced easily disposed by dumping it under soil. However, nowadays, due to high population, amount of is which could not be dumped land pollution. To overcome this problem, must managed or utilized properly give zero waste. Therefore, work focused on production biogas...

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