Synthesis of carbon encapsulated nanocrystals of WP by reacting W(CO)6 with triphenylphosphine at elevated temperature under autogenic pressure

George, P. P.; Pol, Vilas G.; Gedanken, Aharon

doi:10.1007/s11051-006-9201-7

Cited by 17 publications

(13 citation statements)

References 32 publications

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“…No phosphorus was incorporated into the CNTs [86]. More recently reaction of W(CO) 6 with PPh 3 in an autoclave was reported [87]. It is also possible that the presence of PF 6 ions in the synthesis of SCNMs from [CpFe(arene)] + [PF 6 ] À may have impacted on the type of SCNM products formed [10b].…”

Section: Phosphorusmentioning

confidence: 99%

The use of organometallic transition metal complexes in the synthesis of shaped carbon nanomaterials

Nyamori

Mhlanga

Coville

2008

Journal of Organometallic Chemistry

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Section: Phosphorusmentioning

confidence: 99%

The use of organometallic transition metal complexes in the synthesis of shaped carbon nanomaterials

Nyamori

Mhlanga

Coville

2008

Journal of Organometallic Chemistry

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“…The Mn 2 + ion is an efficient dopant29 since it acts as a paramagnetic center (electron spin, S = 5/2), replacing the Zn 2+ in the ZnSe lattice. Such doped materials represent a particular class of diluted magnetic semiconductors in the field of spintronics 41.…”

Section: Resultsmentioning

confidence: 99%

“…Park et al demonstrated generalized synthesis of metal phosphide nanorods via the thermal decomposition of continuously delivered metal–phosphine complexes63 using a syringe pump. As a need to develop additional synthetic technique, we fabricated carbon‐encapsulated WP nanocrystals29 (C‐WP) in a dry autoclave. The thermal decomposition of appropriate mixture29 of W(CO) 6 and triphenylphosphine (PPh 3 ) at 850 °C/3 h under an inert N 2 atmosphere yielded C‐WP.…”

Section: Resultsmentioning

confidence: 99%

“…As a need to develop additional synthetic technique, we fabricated carbon‐encapsulated WP nanocrystals29 (C‐WP) in a dry autoclave. The thermal decomposition of appropriate mixture29 of W(CO) 6 and triphenylphosphine (PPh 3 ) at 850 °C/3 h under an inert N 2 atmosphere yielded C‐WP. The TEM microscopy image (Figure 4b) depicts the elongated carbon fiber decorated by 20–40 nm WP particles.…”

Section: Resultsmentioning

confidence: 99%

“…4) It can be safely used in highly reactive, hazardous or carcinogeneous precursors (e.g., carbonyls) 28. and 5) The temperature used in the dry autoclaving reaction cell (up to 1000 °C) is higher29 than that achieved with commercial autoclaves, which are limited to 650 °C. Moreover, the dry process is extremely versatile in the fabrication of a wide range of nanomaterials, despite the dissimilar chemical and physical properties of the reactant(s) components.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dry Autoclaving for the Nanofabrication of Sulfides, Selenides, Borides, Phosphides, Nitrides, Carbides, and Oxides

Pol

Gedanken

2010

Advanced Materials

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This review compiles various nanostructures fabricated by a distinct "dry autoclaving" approach, where the chemical reactions are carried out without solvents; above the dissociation temperature of the chemical precursor(s) at elevated temperature in a closed reactor. The diversity to fabricate carbides (SiC, Mo(2) C, WC), oxides (VOx-C, ZnO, Eu(2) O(3) , Fe(3) O(4) , MoO(2) ), hexaborides (LaB(6) , CeB(6) , NdB(6) , SmB(6) , EuB(6) , GdB(6) ), nitrides (TiN, NbN, TaN), phosphides (PtP(2) , WP), sulfides (ZnS, FeS/C, SnS/C, WS(2) , WS(2) /C), and selenides (Zn(1-x) Mn(x) Se/C, Cd(1-x) Mn(x) Se/C), with various shapes and sizes is accounted with plausible applications. This unique single-step, solvent-free synthetic process opens up a new route in the growing nanomaterials science; owing to its considerable advantages on the existing approaches.

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Synthesis of WS2 and WSe2 nanowires on stainless steel coupon by reaction under autogenic pressure at elevated temperature method

et al. 2015

Self Cite

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The novel flower-like WE 2 (E = S or Se) nanoflakes are synthesized and the growth of WS 2 and WSe 2 nanowires on stain less steel coupons (SSC) is observed by reaction under autogenic pressure at elevated temperature technique between the metallic tungsten and chalcogen powders at 750°C for 3 h. Powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy are used to characterize all reaction products, viz., neat WS 2 , WSe 2 powder, WS 2 /SSC and WSe 2 /SSC (stainless steel coupon). The photoluminescence spectrum of WS 2 and WSe 2 samples are also reported. In addition, the direct use of metals as precursors will devoid the harmful effects of organometallic precursor.

show abstract

Synthesis of carbon encapsulated nanocrystals of WP by reacting W(CO)6 with triphenylphosphine at elevated temperature under autogenic pressure

Cited by 17 publications

References 32 publications

The use of organometallic transition metal complexes in the synthesis of shaped carbon nanomaterials

The use of organometallic transition metal complexes in the synthesis of shaped carbon nanomaterials

Dry Autoclaving for the Nanofabrication of Sulfides, Selenides, Borides, Phosphides, Nitrides, Carbides, and Oxides

Synthesis of WS2 and WSe2 nanowires on stainless steel coupon by reaction under autogenic pressure at elevated temperature method

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