نتایج جستجو برای: mesoporous material

تعداد نتایج: 373516  

Hamid Reza Pouretedal Mina Ahmadi

The direct and indirect methods in solvent media and grinding method in a solvent-free media were used to prepare the MCM-41/ZnO and MCM-48/ZnO photocatalysts. The X-ray diffraction (XRD) patterns showed that zinc oxide nanoparticles were put into MCM-41 and MCM-48 substrates and there were ZnO crystallites as secondary phase in the extra framework of mesoporous materials. The decrease of surfa...

Journal: :Nanoscale 2015
Byeongho Lee Sangil Lee Minwoo Lee Dae Hong Jeong Youngbin Baek Jeyong Yoon Yong Hyup Kim

We present carbon nanotube (CNT)-bonded graphene hybrid aerogels that are prepared by growing CNTs on a graphene aerogel surface with nickel catalyst. The presence of bonded CNTs in the graphene aerogel results in vastly improved mechanical and electrical properties. A significant increase in specific surface area is also realized. The presence of the CNTs transforms the hybrid aerogels into a ...

Journal: :Inorganic chemistry communications 2009
Wilaiwan Chouyyok Wassana Yantasee Yongsoon Shin Rafal M Grudzien Glen E Fryxell

Functional mesoporous carbon has been built using 1,10-phenanthroline as the fundamental building block, resulting in a nanoporous, high surface area sorbent capable of selectively binding transition metal ions. This material had a specific surface area of 870 m2/g, an average pore size of about 30 Å, and contained as much as 8.2 wt% N. Under acidic conditions, where the 1,10-phenanthroline lig...

2005
Kwong-Yu Chan Jiawen Ren Jin Liu Huanting Wang Jie Ding Kwok-Ying Tsang Chun Lee Hong Kong

Performance of low temperature fuel cells depends critically on the nanostructures of the material components in the electrodes and membranes. Some studies are reported here for 1) mixed metal nanoparticles supported on mesoporous carbon and 2) modification of nanopores of Nafion via in-situ polymerization of furfuryl alcohol. The anodic oxidation of small organic molecules such as alcohols in ...

2010
Ying Li Bing Yan Jin-Liang Liu

Novel organic-inorganic mesoporous luminescent hybrid material N, N'-bis(salicylidene)-thiocarbohydrazide (BSTC-SBA-15) has been obtained by co-condensation of tetraethyl orthosilicate and the organosilane in the presence of Pluronic P123 surfactant as a template. N,N'-bis(salicylidene)-thiocarbohydrazide (BSTC) grafted to the coupling agent 3-(triethoxysilyl)-propyl isocyanate (TESPIC) was use...

Journal: :Journal of applied biomaterials & functional materials 2012
Francesco Baino Sonia Fiorilli Renato Mortera Barbara Onida Enrica Saino Livia Visai Enrica Verné Chiara Vitale-Brovarone

PURPOSE Coupling the potential for bone regeneration and the ability for in situ controlled drug release in a single device is a challenging field of research in bone tissue engineering; in an attempt to pursue this aim, mesoporous bioactive glass (MBG) membranes belonging to the SiO2-P2O5-CaO ternary system were produced and characterized. METHODS The glass was synthesized via a sol-gel rout...

2010
Joanna Gorka Mietek Jaroniec

Introduction Advanced applications often require carbons with high surface area and hierarchical porous structures. In response to this demand some efforts have been undertaken to create materials, which effectively combine the properties of both activated carbons (high surface area) and ordered mesoporous carbons (tunable and well-developed porosity). While there are activation methods, which ...

Journal: :iranian chemical communication 2014
hojat veisi davood kordestani sami sajjadifar mona hamelian

an efficient synthetic method for successful synthesis of amine denderon on sba-15 and related pd (ii) complex has been developed. this modified mesoporous material was characterized by various techniques such as tem, xrd, atomic absorption spectroscopy, n2 adsorption-desorption, and ft-ir. the catalytic activities of the prepared catalysts were investigated by employing aerobic oxidation of al...

ژورنال: سلامت و محیط زیست 2017

Background and Objective: Extreme use of antibiotics and discharging to the environment lead to serious consequences. Mesoporous silica such as MCM-41 material is widely used to absorb contaminants from the aqueous solution. The aim of this study was to evaluate mesoporous synthesis of MCM-41 and its efficacy for removal of the antibiotic cephalexin from aqueous solution. Materials and Methods...

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