Formation of Silicon/Carbon Core‐Shell Nanowires Using Carbon Nitride Nanorods Template and Gold Catalyst

Abstract

In this experiment, silicon/carbon (Si/C) core-shell nanowires (NWs) were synthesized using gold nanoparticles (Au NPs) coated carbon nitride nanorods (CN NRs) as a template. To begin with, the Au NPs coated CN NRs were prepared by using plasma-enhanced chemical vapor deposition assisted with hot-wire evaporation technique. Fourier transform infrared spectrum confirms the C–N bonding of the CN NRs, while X-ray diffraction pattern indicates the crystalline structure of the Au NPs and amorphous structure of the CN NRs. The Au NPs coated CN NRs were thermally annealed at temperature of 800°C in nitrogen ambient for one hour to induce the growth of Si/C core-shell NWs. The growth mechanism for the Si/C core-shell NWs is related to the nitrogen evolution and solid-liquid-solid growth process which is a result of the thermal annealing. The formation of Si/C core-shell NWs is confirmed by electron spectroscopic imaging analysis.

Recent Advances in Silicon Nanowire Biosensors: Synthesis Methods, Properties, and Applications

“…In VLS, there is a deposition of metal-catalyzed (Au, Fe, Pt, Al, etc.) on the silicon wafer and then the SiNWs growth is augmented either by chemical vapor deposition (CVD) technique [ 3 , 4 ] (Fig. 1 ).…”

The Development of Silicon Nanowire as Sensing Material and Its Applications

“…In VLS, metal-catalyzed (Au, Fe, Pt, Al, etc.) would be deposited on the silicon wafer first and then the SiNWs growth is enhanced either by chemical vapor deposition (CVD) technique [40][41][42] or by laser ablation methods [43]. Principally, Si wafer coated metal catalysts are placed at the center of the horizontal tube furnace and introduced with a Si gas source such as silane (SiH 4 ) or tetrachlorosilane (SiCl 4 ) and passed over metal catalyst deposited on Si wafer in the chamber at above eutectic temperature [44].…”

Atomic-scale investigation of the effect of surface carbon coatings on the oxidation and mechanical properties of iron nanowires

“…Oxidation of the reactive metallic materials and their alloys associated with corrosion is one of the longstanding problems in both materials science and nanotechnology. [1][2][3][4][5][6][7][8][9] Oxidation challenges their use and performance in a wide variety of chemically harsh oxidative reactive environments such as atmospheric exposure and chemical conditions. [1][2][3][4][5][6][7][8][9][10][11] The phenomenon exhibits a dramatic impact on the mechanical properties and eventually stability and reliability of the structural materials.…”

“…[1][2][3][4][5][6][7][8][9] Oxidation challenges their use and performance in a wide variety of chemically harsh oxidative reactive environments such as atmospheric exposure and chemical conditions. [1][2][3][4][5][6][7][8][9][10][11] The phenomenon exhibits a dramatic impact on the mechanical properties and eventually stability and reliability of the structural materials. Because of the high surface reactivity and especially high oxygen affinity, reactive metallic materials rapidly oxidize in reactive oxidizing environments where a thick oxide the shell layer completely, covering the free surface of reactive materials.…”