On the Controllable Soft-Templating Approach to Mesoporous Silicates

Wan, Ying; Zhao, Dongyuan

doi:10.1021/cr068020s

Cited by 2,214 publications

(1,661 citation statements)

References 355 publications

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“…High surface porous materials have been widely utilized as a support by loading metal nanoparticles [7,8]. Porous materials can be classified mainly into three kinds based on their pore diameter, which are micro-, meso-, and macroporous materials.…”

Section: Synthesis Of Porous Oxidesmentioning

confidence: 99%

“…A representative support in the field of heterogeneous catalysis is a mesoporous oxide due to its high surface area, ordered pore structure, and large pore volume [7]. Owing to the versatile sol-gel chemistry using silicates, a large number of mesoporous silicas have been discovered with well-defined mesostructures and controlled pore dimensions.…”

Section: Mesoporous Oxidesmentioning

confidence: 99%

“…Bimetallic nanoparticle catalysts, by alloying two metals, create new chemical and catalytic properties, which cannot be achieved by their parent single metal nanoparticles [5,6]. High surface porous materials have also been developed as a support as well as a catalyst [7,8]. As catalytic behaviors can also be altered at oxide-metal interfaces, support materials with high surfaces and ordered pore structures become increasingly important for supported catalysts.…”

Section: Introductionmentioning

confidence: 99%

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Nanocatalysis I: Synthesis of Metal and Bimetallic Nanoparticles and Porous Oxides and Their Catalytic Reaction Studies

Somorjai

2014

Catal Lett

127

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In recent heterogeneous catalysis, much effort has been made in understanding how the size, shape, and composition of nanoparticles and oxide-metal interfaces affect catalytic performance at the molecular level. Recent advances in colloidal synthetic techniques enable preparing diverse metallic or bimetallic nanoparticles with welldefined size, shape, and composition and porous oxides as a high surface support. As nanoparticles become smaller, new chemical, physical, and catalytic properties emerge. Geometrically, as the smaller the nanoparticle the greater the relative number of edge and corner sites per unit surface of the nanoparticle. When the nanoparticles are smaller than a critical size (2.7 nm), finite-size effects such as a change of adsorption strength or oxidation state are revealed by changes in their electronic structures. By alloying two metals, the formation of heteroatom bonds and geometric effects such as strain due to the change of metal-metal bond lengths cause new electronic structures to appear in bimetallic nanoparticles. Ceaseless catalytic reaction studies have been discovered that the highest reaction yields, product selectivity, and process stability were achieved by determining the critical size, shape, and composition of nanoparticles and by choosing the appropriate oxide support. Depending on the pore size, various kinds of micro-, meso-, and macro-porous materials are fabricated by the aid of structure-directing agents or hardtemplates. Recent achievements for the preparation of versatile core/shell nanostructures composing mesoporous oxides, zeolites, and metal organic frameworks provide new insights toward nanocatalysis with novel ideas.

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Section: Synthesis Of Porous Oxidesmentioning

confidence: 99%

Section: Mesoporous Oxidesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nanocatalysis I: Synthesis of Metal and Bimetallic Nanoparticles and Porous Oxides and Their Catalytic Reaction Studies

Somorjai

2014

Catal Lett

127

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“…Porous materials have attracted the great interest of scientists and industry due to their potential applications, viz adsorption technology, molecular separation, catalysis, electronics, gas sensors, etc. Recently, Zhao et al reported the synthesis of a variety of mesoporous SBA-type silica materials (SBA 5 Santa Barbara Amorphous), using nonionic triblock copolymers as templates [9,10]. Our research group also synthesized mesoporous silica from rice husk ash [11].…”

Section: Introductionmentioning

confidence: 99%

Surface free energy and dielectric properties of vinyltriethoxysilane functionalized SBA-15-reinforced unsaturated polyester nanocomposites

2015

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In this work, organic-inorganic hybrid nanocomposites based on vinylsilane-functionalized SBA-15 reinforced unsaturated polyester resin were developed and characterized. SBA-15 was synthesized and functionalized with vinyltriethoxysilane. The surface functionalized SBA-15 (VSBA-15) with varying weight percentages (1, 3, 5, and 7 wt%) was incorporated into the unsaturated polyester resin. The resulting VSBA-15-reinforced epoxy composites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, differential scanning calorimetry, and thermogravemetric analysis and impedance analyzer. Among the composite samples with varying loadings, the dielectric behavior of 7 wt% VSBA-15 loaded composite sample possesses the lowest value of dielectric constant, that is, 2.4 at 1 MHz frequency when compared with that of other samples. Further, the thermal stability was also enhanced to an appreciable extent, when compared with that of the samples with lower V-SBA-15 loadings. POLYM. COMPOS., 37:3433-3441,

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“…Ordered mesoporous silicates with controllable structure and systematic tailored pore architecture have received much attention for their application in catalysis, drug delivery, separation, adsorption, nanostructured semiconductors and low dielectric devices [1]. Methods that enable tuning of the porosity, pore morphology, size distribution and the hierarchical morphology of these materials are of particular interest.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical fabrication of silica cocoon with hexagonally ordered channel constructed wall via an emulsion-assisted process

zhang

Wang

et al. 2012

Microporous and Mesoporous Materials

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On the Controllable Soft-Templating Approach to Mesoporous Silicates

Cited by 2,214 publications

References 355 publications

Nanocatalysis I: Synthesis of Metal and Bimetallic Nanoparticles and Porous Oxides and Their Catalytic Reaction Studies

Nanocatalysis I: Synthesis of Metal and Bimetallic Nanoparticles and Porous Oxides and Their Catalytic Reaction Studies

Surface free energy and dielectric properties of vinyltriethoxysilane functionalized SBA-15-reinforced unsaturated polyester nanocomposites

Hierarchical fabrication of silica cocoon with hexagonally ordered channel constructed wall via an emulsion-assisted process

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