Catalyst-assisted synthesis of core–shell SiC/SiO 2 nanowires via a simple method

Hu, Ping; Dong, Shun; Zhang, Dongyang; Cheng, Fang; Zhang, Xinghong

doi:10.1016/j.ceramint.2015.09.109

Cited by 18 publications

(9 citation statements)

References 49 publications

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“…Later, the research teams from Harvard University and Hong Kong University proposed the true nanoscale Si NWs [ 16 ]. Various single crystal forms of inorganic nanowires have been reasonably synthesized by VLS method with diameters on the order of nanometers [ 17 , 18 ]. The growth mechanism is shown in Figure 1 a [ 15 ].…”

Section: Synthesis Approachesmentioning

confidence: 99%

Novel Nanofluidic Cells Based on Nanowires and Nanotubes for Advanced Chemical and Bio-Sensing Applications

Zhu

Wang

et al. 2021

Nanomaterials

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Since the first introduction of one-dimensional nanochannels for single-molecule detection, there has been increasing interest in modern nanofluidic systems, such as chemical and biological sensing applications. Recently developed nanowires (NWs) and nanotubes (NTs) have received tremendous attention due to their unique geometrical, physical and chemical properties, which are very attractive in this field. Here, we review the recent research activities in the field of novel nanofluidic cells based on NWs and NTs. First, we give a brief introduction of this field. Then the common synthesis methods of NWs and NTs are summarized. After that, we discuss the working principle and sensing mechanism of nanofluidic devices, which is fundamental to the interaction between these nanostructures and small molecules. Finally, we present the NW- and NT-based devices for chemical and bio-sensing applications, such as gas sensing, pathogen detection, DNA sequencing, and so forth.

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Section: Synthesis Approachesmentioning

confidence: 99%

Novel Nanofluidic Cells Based on Nanowires and Nanotubes for Advanced Chemical and Bio-Sensing Applications

Zhu

Wang

et al. 2021

Nanomaterials

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“…Recently, some novel manufactured techniques of SiC nanostructure were developed. Some reports were brought forward for synthesis of SiC nanowires (SiC nw ) [5][6][7][8][9][10], including arc discharge, laser ablation, and carbon thermal reduction. However, expensive manufacturing cost and inferior dispersion uniformity of reinforcement were obvious.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of SiC Composites with Synergistic Toughening of Carbon Whisker andIn Situ3C-SiC Nanowire

Zhang

2016

Advances in Materials Science and Engineering

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The SiC composites with synergistic toughening of carbon whisker andin situ3C-SiC nanowire have been fabricated by hot press sinter technology and annealed treatment technology. Effect of annealed time on the morphology of SiC nanowires and mechanical properties of theCw/SiC composites was surveyed in detail. The appropriate annealed time improved mechanical properties of theCw/SiC composites. The synergistic effect of carbon whisker and SiC nanowire can improve the fracture toughness forCw/SiC composites. The vapor-liquid-solid growth (VLS) mechanism was proposed. TEM photo showed that 3C-SiC nanowire can be obtained with preferential growth plane ({111}), which corresponded to interplanar spacing about 0.25 nm.

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“…From the thermodynamic point of view, the reaction ( 8 ) can take place during the cooling stage preferably 38 . …”

Section: Resultsmentioning

confidence: 99%

“…Niu and Wang synthesized 3C–SiC nanowires via CVD by evaporating ferrocene onto a Si wafer at 1550 °C 37 . Hu et al synthesized SiC/SiO 2 nanowires with a ferrocene-assisted chemical vapor reaction process at 1400 °C 38 . Li et al synthesized SiC nanowires with ferrocene by a CVD route at 1500–1600 °C 39 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of SiC/SiO2 core–shell nanowires with good optical properties on Ni/SiO2/Si substrate via ferrocene pyrolysis at low temperature

Chen

Chi

Hsu

et al. 2021

Sci Rep

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In this study, the high-density SiC/SiO2 core–shell nanowires were synthesized on the nickel coated SiO2 (100 nm)/Si substrate by chemical vapor deposition (CVD) method with ferrocene precursor at temperature 1000 °C compared to previous studies (1300–1600 °C). The present work provides an efficient strategy for the production of SiC/SiO2 nanowires with uniform morphology and good optical properties, where the Ni layer plays important roles for this fabrication at low temperature which reduces the decomposition temperature of hydrocarbon gases and improves the growth quality of SiC nanowires. The as-synthesized SiC/SiO2 nanowires consist of single crystal 3C structures as well as 3C structures with defects along [111] direction. In the photoluminescence (PL) spectrum, the SiC/SiO2 core–shell nanowires revealed an obvious blueshift. The blueshift is due to the formation of nanoscale silicon carbide polytypism caused by the stacking faults in 3C–SiC and the nanoscale polytypism also caused the transition from indirect to direct bandgap which explains why the stacking faults percentage in SiC confirmed from X-ray diffraction (XRD) is 19%, but ultimately makes the strongest emission intensity. Finally, the PL characteristics are further improved by changing the diameter of the SiC nanowire and etching and an approximate model followed by the vapor–liquid–solid (VLS) mechanism was proposed to explain the possible growth mechanism of the SiC/SiO2 nanowires.

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Catalyst-assisted synthesis of core–shell SiC/SiO 2 nanowires via a simple method

Cited by 18 publications

References 49 publications

Novel Nanofluidic Cells Based on Nanowires and Nanotubes for Advanced Chemical and Bio-Sensing Applications

Novel Nanofluidic Cells Based on Nanowires and Nanotubes for Advanced Chemical and Bio-Sensing Applications

Fabrication of SiC Composites with Synergistic Toughening of Carbon Whisker andIn Situ3C-SiC Nanowire

Synthesis of SiC/SiO2 core–shell nanowires with good optical properties on Ni/SiO2/Si substrate via ferrocene pyrolysis at low temperature

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