Laser ablation synthesis of new gold arsenides using nano-gold and arsenic as precursors. Laser desorption ionisation time-of-flight mass spectrometry and spectrophotometry

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Section: Laser Ablation Synthesismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laser ablation synthesis of arsenic–phosphide As_mP_n clusters from As–P mixtures. Laser desorption ionisation with quadrupole ion trap time‐of‐flight mass spectrometry: The mass spectrometer as a synthesizer

Kubáček

Prokeš

Pamreddy

et al. 2018

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“…Mass spectrometry has been used to synthesize a range of clusters, e.g. new gold phosphide clusters using nanogold and red phosphorus as precursors, gold–arsenides, gold–carbides, and arsenic–phosphides …”

Section: Introductionmentioning

confidence: 99%

“…Mass spectrometry has been used to synthesize a range of clusters, e.g. new gold phosphide clusters using nanogold and red phosphorus as precursors, 12 gold-arsenides, 13 gold-carbides, 14 and arsenic-phosphides. 15 The preparation of a nano-structured red phosphorus/carbon composite was demonstrated using amorphous carbon and red phosphorus by a vaporisation/adsorption technique 16 properties.…”

Section: Introductionmentioning

confidence: 99%

Laser ablation synthesis of carbon–phosphides from graphene/nanodiamond–phosphorus composite precursors: Laser desorption ionisation time‐of‐flight mass spectrometry

Mandal

Vaňhara

Havel

2019

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Rationale Carbon–phosphides are new and promising strategic materials with applications e.g. in optoelectronics. However, their chemistry and methods of synthesis are not completely understood, and only a limited number of C–P clusters have been detected up to now. Laser ablation synthesis (LAS) or laser desorption ionisation (LDI) has great potential to generate CmPn clusters in the gas phase and to act as the basis for the development of new technology. Methods The LAS of carbon phosphides using mixtures of nano‐carbon sources (graphene, nanodiamonds) with phosphorus allotropes (red, black, and phosphorene) was examined. Since phosphorene is not commercially available, it was synthesised. A reflectron time‐of‐flight mass spectrometer was used to produce and identify the C–P clusters. A transmission electron microscope was used to characterise the prepared composites. Results LDI of various carbon–phosphorus composites generated a range of carbon–phosphides. From graphene–red phosphorus, CmP+ (m = 3–47), CmP2+ (m = 2–44), CmP3+ (m = 1–42), CmP4+ (m = 1–39), CmP5+ (m = 1–37), CmP6+ (m = 1–34), CmP7+ (m = 1–31), CmP8+ (m = 1–29), CmP9+ (m = 1–26), CmP10+ (m = 1–24), CmP11+ (m = 1–21), and CmP12+ (m = 1–19) clusters were detected, while nanodiamond composites with red/black phosphorus and with phosphorene yielded C24P5 + 2n+ (n = 0–28), C24P5 + 2n+ (n = 0–16), and C24P5 + 2n+ (n = 0–14) clusters, respectively. In total, over 300 new carbon–phosphide clusters were generated. Conclusions The novel series of carbon–phosphide clusters generated from graphene or nanodiamond composites with red/black phosphorus or with phosphorene demonstrated rich carbon–phosphide chemistry that might inspire the development of novel nano‐materials with specific properties.

“…[14] Quadrupole ion trap time-of-flight mass spectrometry (QIT-TOFMS) is a powerful technique for following the generation of clusters from various solid materials, [15][16][17] and it has been used to study the generation of new compounds. [15][16][17][18][19][20] The detailed structure of AgAsS 2 glass has, up to now, not been characterised and therefore the aim of this work was to study clusters generated during the laser ablation of AgAsS 2 glass and, via determination of their stoichiometry, to elucidate the structure of this glass.…”

mentioning

confidence: 99%

Structural elucidation of AgAsS₂ glass by the analysis of clusters formed during laser desorption ionisation applying quadrupole ion trap time‐of‐flight mass spectrometry

Mawale

Alberti

Zhang

et al. 2016

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TOFMS was shown to be a useful technique to study the generation of Ag(m)As(n)S(x )clusters. SEM, TEM and EDX analysis proved that the structure of AgA(s)S2 glass is ‘grain-like’ where grains are either: (1) Silver-rich ‘islands’ (Ag(m,) m up to 39) connected by arsenic and/or sulfur or arsenic sulfide chains or (2) silver sulfide (Ag2S)m (m = 9-20) clusters also similarly inter-connected. This obtained structural information may be useful for the development of ultra-high-density phase-change storage and memory devices using this kind of glass as a base.