Synthesis of Boron Nitride with Ordered Mesostructure

Dibandjo, Philippe; Bois, Laurence; Chassagneux, Fernand; Cornu, David; Létoffé, J. M.; Toury, Bérangère; Babonneau, Florence; Miele, Philippe

doi:10.1002/adma.200401501

Cited by 137 publications

(103 citation statements)

References 26 publications

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“…Its high chemical and thermal stability also suggests that recycling could be easily achieved. Nanostructured BN is therefore an ideal candidate as an absorbent material 16,17 .…”

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confidence: 99%

Porous boron nitride nanosheets for effective water cleaning

et al. 2013

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Effective removal of oils, organic solvents and dyes from water is of significant, global importance for environmental and water source protection. Advanced sorbent materials with excellent sorption capacity need to be developed. Here we report porous boron nitride nanosheets with very high specific surface area that exhibit excellent sorption performances for a wide range of oils, solvents and dyes. The nanostructured material absorbs up to 33 times its own weight in oils and organic solvents while repelling water. The saturated boron nitride nanosheets can be readily cleaned for reuse by burning or heating in air because of their strong resistance to oxidation. This easy recyclability further demonstrates the potential of porous boron nitride nanosheets for water purification and treatment.

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“…Its high chemical and thermal stability also suggests that recycling could be easily achieved. Nanostructured BN is therefore an ideal candidate as an absorbent material 16,17 .…”

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confidence: 99%

Porous boron nitride nanosheets for effective water cleaning

et al. 2013

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“…In this context, it is deserved to introduce that mesoporous boron nitride BN with a specific surface area of 540 m 2 g ࢬ1 , a mesoporous volume of 0.27 cm 3 g ࢬ1 , and a narrow pore size distribution 4.4 nm, was obtained from trimethylamino borazine as a precursor using CMK-3 mesoporous carbon as a non-oxygen template. 32 The mesoporous carbon template route appears to be a promising method for fabricating mesoporous ceramics from polymeric precursors. BN and BCN nanostructures were alternatively prepared via a substitution reaction using carbon templates.…”

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confidence: 99%

Fabrication of SiC-Based Ceramic Microstructures from Preceramic Polymers with Sacrificial Templates and Lithographic Techniques-A Review

Yoon

Lee

Kim

2006

J. Ceram. Soc. Japan

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Review péÉÅá~ä fëëìÉ Äó dìÉëí bÇáíçêëW lêÖ~åáÅ-íç-fåçêÖ~åáÅ`çåîÉêëáçå mêçÅÉëë Ñçê mçäóãÉê-aÉêáîÉÇ`Éê~ãáÅë c~ÄêáÅ~íáçå çÑ pá`_~ëÉÇ`Éê~ãáÅ jáÅêçëíêìÅíìêÉë Ñêçã mêÉÅÉê~ãáÅ mçäóãÉêë ïáíÜ p~ÅêáÑáÅá~ä qÉãéä~íÉë~åÇ iáíÜçÖê~éÜáÅ qÉÅÜåáèìÉë-^oÉîáÉï Processes for fabricating ceramic microstructures are in demand for use in areas such as microreactors and MEMS that can be used in harsh environments requiring a high temperatures tolerance, corrosion resistance, as well as tribological properties. This review describes the manufacture of tailored porous SiC ceramic microstructures using sacrificial templates, the feasible applications of microporous structures and microchannels as a microreactor, and microfabrication of preceramic polymers using soft lithography and sterolithography. Macroporous and mesoporous SiC ceramic structures have been fabricated using various templates including packed silica sphere assemblies, porous carbon templates, and nanoporous silica structures. In addition, SiC nanotubes have also been obtained from an alumina membrane used as a template. These porous structures were generally obtained using a series of infiltration, curing and pyrolysis, and chemical or oxidative etching steps. Complicated SiC ceramic microfeatures were fabricated using near-net shape lithographic techniques to preceramic polymers. Line patterns and porous channels were produced by soft lithography, whereas the 3D woodpile structures were fabricated using stereolithography. These novel structures show great promises for use in high temperature micro-reactors for the on-demand reforming of higher hydrocarbons into hydrogen in portable power sources. It is expected that the integration of preceramic polymers into new economic manufacturing strategies such as precursor casting in templates and lithography utilization will be a break-through technology for the creation of complex ceramic nanostructures.

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“…the particle surface through surface grinding and internal friction. Hence, this higher porosity may result in large surface area in treated BN powder as compared to control [15,16]. Moreover, this increased surface area would be helpful to confer better performance during catalytic applications.…”

Section: Resultsmentioning

confidence: 99%

“…The porous BN has gain significant attention due to its high specific surface area, which makes it a promising material for catalytic action. The porous BN has been synthesized by using various methods such as molecular precursors, and supercritical drying method etc [14][15][16][17]. However, all these methods require either special precursor or high temperature conditions to modulate the specific surface area and crystal structure.…”

Section: Introductionmentioning

confidence: 99%