Structure- and size-controlled ultrafine ZnS nanowires

Meng, Xiang‐Min; Liu, J.; Jiang, Yang; Chen, W.W.; Lee, C.S.; Bello, I.; Lee, S.T.

doi:10.1016/j.cplett.2003.10.093

Cited by 101 publications

(66 citation statements)

References 20 publications

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“…4). The results indicate that an increase in growth The small difference in Gibbs free energy [14] facilitates the phase transformation and is very sensitive to the reaction parameters. As the substrate temperature was quite high, both phases of the ZnS nanostructures were created in the mixture.…”

Section: Resultsmentioning

confidence: 89%

“…One of the most attracting features of nanowires (NWs) is that lattice mismatch or strain in NWs can be significantly relaxed due to their high surface/volume ratio and small lateral size. Different synthetic approaches have been used for the synthesis of ZnS nanomaterial, especially nanowires and nanorods; these methods include laser ablation [13], vapor transport in the presence [14] or in the absence of [15] catalyst, chemical vapor deposition (CVD) [16], electrochemical deposition [17] and solvothermal method [18]. Among them, CVD has got a number of advantages such as simplicity and the ability to use a wide variety of precursors such as liquid precursors, gaseous precursors, solid precursors which include halides, hybrids, metal-organic and organic.…”

Section: Introductionmentioning

confidence: 99%

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Growth temperature dependence of VLS-grown ultra-long ZnS nanowires prepared by CVD method

2018

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The synthesis of ultra-long high-quality zinc sulfide (ZnS) nanowires of uniform size on heterogeneous substrates is highly desirable for investigating the fundamental properties of ZnS nanowires and for fabricating integrated functional nanodevices. The present study developed a novel technique for growing ultra-long ZnS nanowires on thin-catalyst-coated substrates. ZnS nanowires were synthesized by chemical vapor deposition on a silicon substrate deposited by gold (* 5 nm in thickness) as the catalyst at 550, 600, 700, 750 and 800°C. The structural properties of the samples were investigated by X-ray diffraction, and the results showed that the fabricated nanowires have both wurtzite and zinc blend structures. The morphological properties of the nanowires were determined by scanning electron microscopy, and the results show that the substrate is thoroughly coated with 10 lm of zinc sulfide nanowires. Increasing the substrate temperature from 600 to 800°C increased the diameter of the nanowires and decreased the length. The growth mechanism of the nanowires was vapor-liquid-solid. The EDX spectra of this sample showed an absence of contamination, confirming the high purity of the ZnS nanowires.

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Section: Resultsmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Growth temperature dependence of VLS-grown ultra-long ZnS nanowires prepared by CVD method

2018

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“…The VLS model is a well established mechanism responsible for the growth of nanowires and nanotubes of various inorganic materials, e.g semiconductors, oxides. [121][122][123][124][125][126][127][128][129][130].…”

Section: Chemical Vapor Depositionmentioning

confidence: 99%

Nanocrystalline materials and coatings

Tjong

Chen

2004

Materials Science and Engineering: R: Reports

842

345

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In recent years, near-nano (submicron) and nanostructured materials have attracted increasingly more attention from the materials community. Nanocrystalline materials are characterized by a microstructural length or grain size of up to about 100 nm. Materials having grain size of $0.1 to 0.3 mm are classified as submicron materials. Nanocrystalline materials exhibit various shapes or forms, and possess unique chemical, physical or mechanical properties. When the grain size is below a critical value ($10-20 nm), more than 50 vol.% of atoms is associated with grain boundaries or interfacial boundaries. In this respect, dislocation pile-ups cannot form, and the Hall-Petch relationship for conventional coarse-grained materials is no longer valid. Therefore, grain boundaries play a major role in the deformation of nanocrystalline materials. Nanocrystalline materials exhibit creep and super plasticity at lower temperatures than conventional micro-grained counterparts. Similarly, plastic deformation of nanocrystalline coatings is considered to be associated with grain boundary sliding assisted by grain boundary diffusion or rotation. In this review paper, current developments in fabrication, microstructure, physical and mechanical properties of nanocrystalline materials and coatings will be addressed. Particular attention is paid to the properties of transition metal nitride nanocrystalline films formed by ion beam assisted deposition process. #

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“…Although wurtzite-structured ZnS is believed to be a metastable phase at room temperature, most of the reported vapor phase deposited ZnS nanowires and nanobelts have been wurtzite structures [7,12,17], with very few reports of predominantly zinc blende-structured ZnS nanowires [19] or nanobelts.…”

Section: Introductionmentioning

confidence: 99%

Zigzag zinc blende ZnS nanowires: Large scale synthesis and their structure evolution induced by electron irradiation

2009

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Large scale zigzag zinc blende single crystal ZnS nanowires have been successfully synthesized during a vapor phase growth process together with a small yield of straight wurtzite single crystal ZnS nanowires. AuPd alloy nanoparticles were utilized to catalyze a vapor-solid-solid growth process of both types of ZnS nanowires, instead of the more common vapor-liquid-solid growth process. Surprisingly, the vapor-phase grown zigzag zinc blende ZnS nanowires are metastable under high-energy electron irradiation in a transmission electron microscope, with straight wurtzite nanowires being much more stable. Upon exposure to electron irradiation, a wurtzite ZnO nanoparticle layer formed on the zigzag zinc blende ZnS nanowire surface with concomitant displacement damage. Both electron inelastic scattering and surface oxidation as a result of electron-beam heating occur during this structure evolution process. When prolonged higher-voltage electron irradiation was applied, local zinc blende ZnS nanowire bodies evolved into ZnS ZnO nanocables, and dispersed ZnS ZnO nanoparticle networks. Random AuPd nanoparticles were observed distributed on zigzag ZnS nanowire surfaces, which might be responsible for a catalytic oxidation effect and speed up the surface oxidation-induced structure evolution.

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Structure- and size-controlled ultrafine ZnS nanowires

Cited by 101 publications

References 20 publications

Growth temperature dependence of VLS-grown ultra-long ZnS nanowires prepared by CVD method

Growth temperature dependence of VLS-grown ultra-long ZnS nanowires prepared by CVD method

Nanocrystalline materials and coatings

Zigzag zinc blende ZnS nanowires: Large scale synthesis and their structure evolution induced by electron irradiation

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