Mechanism for the formation of tin oxide nanoparticles and nanowires inside the mesopores of SBA-15

Satishkumar, G.; Titelman, L.; Landau, Miron V.

doi:10.1016/j.jssc.2009.07.039

Cited by 30 publications

(17 citation statements)

References 22 publications

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“…Satishkumar et al prepared tin oxide nanoparticles by using metal chloride precursor and hexane dispersed SBA-15 as template [76]. At 250°C in air tin oxide nanoparticle (5 nm) with wel l defi ned cassiterite structure were formed inside the SBA-15 matrix mesopores.…”

Section: Nanocast Tin Oxidementioning

confidence: 99%

“…Among these CuCo 2 O 4 and MnCo 2 O 4 catalysts exhibit high activities and robust stabilities toward the reaction of CO oxidation [73]. Synergic interaction between mesoporous copper and ceria matrices enhanced the catalytic performance towards CO oxidation [68] whereas ruthenium bimetallic component is responsible for both high conversion of NH 3 and high selectivity for N 2 [76]. Th ree dimensional ordered mesoporous Cr 2 O 3 was curiously fi tted for as negative electrode in lithium batteries [70].…”

Section: Potential Applicationmentioning

confidence: 99%

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The Synthetic Strategy for Developing Mesoporous Materials through Nanocasting Route

Kumar¹,

Chowdhury²

2015

Advanced Functional Materials

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Nanocasting is a powerful methodology for creating ordered mesoporous materials that are more diffi cult to synthesize by conventional processes. Synthesis starts with fabrication of inorganic/carbon precursors inside the nanospaces of a mesoporous hard template, which is used as a true mold to produce the mesoporous materials with controllable pore size, morphology of the network. Aft er fabrication inside the nanospaces, the template framework is selectively removed and the mesoporous ordered inorganic/organic material is obtained. In this chapter, a comprehensive literature survey for fabrication of mesoporous materials via mesoporous hard template, e.g., SBA-15, KIT-6, and mesoporous carbon, is presented. First two sections are limited to the basic understanding of nanocasting methodology. Th e later three sections comprise a review of works based on mesoporous silica/carbon template, which has been nurturing till date. A wide range of studies for synthesis of several inorganic compounds range from metal oxides, metal sulfi des, metal carbide phosphate, and ceramics is covered.

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Section: Nanocast Tin Oxidementioning

confidence: 99%

Section: Potential Applicationmentioning

confidence: 99%

The Synthetic Strategy for Developing Mesoporous Materials through Nanocasting Route

Kumar¹,

Chowdhury²

2015

Advanced Functional Materials

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“…The silica can be used in two ways: either as a template for catalysts with wires or nanoparticles [39][40][41], or by adding functional groups to the silica walls [41].…”

Section: Hosts For Catalystsmentioning

confidence: 99%

Mesoporous Building Blocks: Synthesis and Characterization of Mesoporous Silica Particles and Films

Björk¹

2013

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On the cover, the structure of SBA-15 is illustrated. Inside the pores SEM micrographs have been inserted showing (clockwise from the top): rods, fibers, a film consisting of rods grown on a substrate, a film consisting of platelets grafted on a substrate, short rods, and platelets. In the center the sheet morphology is presented.© Emma Björk, unless otherwise stated.ISBN: 978-91-7519-516-2 ISSN: 0345-7524 Printed by LiU-tryck, Linköping, Sweden, 2013 Research is formalized curiosity. It is poking and prying with a purposeZora Neale Hurston (1903Hurston ( -1960 i ABSTRACTCatalyst supports, drug delivery systems, hosts for nanoparticles, and solar cells are just some examples of the wide range of exciting applications for mesoporous silica. In order to optimize the performance of a specific application, controlling the material's morphology and pore size is crucial. For example, short and separated particles are beneficial for drug delivery systems, while for molecular sieves, the pore size is the key parameter.In this thesis, mesoporous silica building blocks, crystallites, with hexagonally ordered cylindrical pores were synthesized, with the aim to understand how the synthesis parameters affect the particle morphology and pore size. The synthesis of the particles is performed using a sol-gel process, and in order to increase the pore size, a combination of low temperature, and additions of heptane and NH 4 F was used. By variations in the amounts of reagents, as well as other synthesis conditions, the particle morphology and pore size could be altered. Separated particles were also grown on or attached to substrates to form films. Also, a material with spherical pore structure was synthesized, for the first time using this method.It was found that a variation in the heptane concentration, in combination with a long stirring time, yields a transition between fiber and sheet morphologies. Both morphologies consist of crystallites, which for the fibers are joined end to end, while for the sheets they are attached side by side such that the pores are accessible from the sheet surface. The crystallites can be separated to a rod morphology by decreasing the stirring time and tuning the HCl concentration, and it was seen that these rods are formed within 5 min of static time, even though the pore size and unit cell parameters were evolving for another 30 min. Further studies of the effects of heptane showed that the shape and mesoscopic parameters of the rods are affected by the heptane concentration, up to a value where the micelles are fully saturated with heptane. It was also observed that the particle width increases with decreasing NH 4 F concentration, independent of heptane amount, and a platelet morphology can be formed. The formation time of the particles decrease with decreasing NH 4 F, and the growth mechanism for platelets was further studied. The pore sizes for various morphologies were altered by e.g. variations in the hydrothermal treatment conditions, or the method for removing the surfactants.ii T...

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“…Moreover, the thick pore wall (3.1-6.4 nm) provides high thermal stability and hydrothermal stability [23][24][25]. This mesoporous material with uniform pore size and periodic porous structural properties is a suitable candidate for the confined immobilization and growth of semiconductive oxides nanostructures [26,27].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of catalytic metal semiconductor-doped siliceous materials with ordered structure for chemical sensoring

et al. 2013

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Mechanism for the formation of tin oxide nanoparticles and nanowires inside the mesopores of SBA-15

Cited by 30 publications

References 22 publications

The Synthetic Strategy for Developing Mesoporous Materials through Nanocasting Route

The Synthetic Strategy for Developing Mesoporous Materials through Nanocasting Route

Mesoporous Building Blocks: Synthesis and Characterization of Mesoporous Silica Particles and Films

Synthesis and characterization of catalytic metal semiconductor-doped siliceous materials with ordered structure for chemical sensoring

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