نتایج جستجو برای: mesoporous materials

تعداد نتایج: 444707  

2008
Brian J. Melde Brandy J. Johnson Paul T. Charles

Mesoporous silicas, especially those exhibiting ordered pore systems and uniform pore diameters, have shown great potential for sensing applications in recent years. Morphological control grants them versatility in the method of deployment whether as bulk powders, monoliths, thin films, or embedded in coatings. High surface areas and pore sizes greater than 2 nm make them effective as adsorbent...

2014
Xinyi Zhang Jianfeng Yao Muataz Ali Jing Wei Huanting Wang Leslie Y. Yeo James R. Friend Douglas R. MacFarlane

In this paper, we report a UV/ozone-assisted method for low temperature preparation of mesoporous TiO2 with controlled crystalline phase. The results showed that the crystallization of mesoporous TiO2 can occur at temperatures as low as 100 C under UV/ozone irradiation. Highly crystalline mesoporous anatase TiO2 was obtained after UV/ozone treatment at 200 C. The phase transformation from anata...

Journal: :Nanoscale 2011
Xiaoliang Fang Cheng Chen Zhaohui Liu Pengxin Liu Nanfeng Zheng

Hollow mesoporous silica spheres have recently attracted increasing attention. However, effective synthesis of uniform hollow mesoporous spheres with controllable well-defined pore structures for fundamental research and practical applications has remained a significant challenge. In this work, a straightforward and effective "cationic surfactant assisted selective etching" synthetic strategy w...

Journal: :Nature materials 2004
Donglin Li Haoshen Zhou Itaru Honma

Mesoporous materials are of technological interest because of their applications ranging from catalysts, molecular sieves, separation technology and gas sensors, to batteries and electronics. Here we demonstrate a synthetic methodology that allows us to create an ordered mesoporous nanocomposite with a crystalline oxide framework. We design a 'nanocrystal-glass' configuration to build a nanoarc...

Journal: :ChemSusChem 2015
Youngbo Choi Hongseok Park Yang Sik Yun Jongheop Yi

Hierarchical porous catalysts have recently attracted increasing interest because of the enhanced accessibility to active sites on such materials. In this context, previously reported hierarchically mesoporous ASN and ASPN materials are evaluated by applying them to the dehydration of glycerol, and demonstrate excellent catalytic performance. In addition, a comprehensive understanding of the ef...

2009
Cyrus Zamani Xavi Illa Sara Abdollahzadeh-Ghom JR Morante Albert Romano Rodríguez

Mesoporous silica with KIT-6 structure was investigated as a preconcentrating material in chromatographic systems for ammonia and trimethylamine. Its adsorption capacity was compared to that of existing commercial materials, showing its increased adsorption power. In addition, KIT-6 mesoporous silica efficiently adsorbs both gases, while none of the employed commercial adsorbents did. This mean...

Journal: :international journal of environmental research 0

ordered mesoporous carbon cmk-3 (omc) have been synthesized using mesoporous sba-15 silica as template and modified with cobalt carbonate. morphologies and surface texturing of materials werecharacterized by x-ray diffraction (xrd), scanning electron microscopy (sem) and n2 adsorption-desorptionisotherms. the cobalt modified ordered mesoporous carbon were found to have a surface area of 490.06m...

2013
Dan Wang Huiming Lin Jingjie Jiang Xiao Han Wei Guo Xiaodan Wu Yingxue Jin Fengyu Qu

Magnetic and macro/mesoporous bioactive glasses were synthesized by a one-pot method via a handy salt leaching technique. It was identified to be an effective and simple synthetic strategy. The non-ionic triblock copolymer, poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (P123), was used as the structure directing agent for mesoporous structure but also as the red...

Journal: :Molecules 2014
Victoria Gascón Isabel Díaz Carlos Márquez-Álvarez Rosa M Blanco

Siliceous ordered mesoporous materials (OMM) are gaining interest as supports for enzyme immobilization due to their uniform pore size, large surface area, tunable pore network and the introduction of organic components to mesoporous structure. We used SBA-15 type silica materials, which exhibit a regular 2D hexagonal packing of cylindrical mesopores of uniform size, for non-covalent immobiliza...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید