Chemically grafted of single-walled carbon nanotubes onto a functionalized silicon surface

Abstract

This paper highlights some interesting results regarding the Single walled carbon nanotubes (SWCNTs) functionalized by carboxylic acid, which were dispersed with ultrasonic vibration and implanted using 3 aminopropyltriethoxysilane (APTES) solution on a porous pyramidal silicon (PPS) surface. The physical characterizations of the samples were studied by both Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). Also, Fourier transform infrared spectroscopy (FTIR) has been carried out. First, SEM morphological observations reveals that nano pores dig into the sides of the micro pyramids and SWCNTs located throughout the area Si pyramidal structure. Second, AFM confirm the information ob tained by various other techniques such those of electron microscopy. Third, Fourier transform infrared spectroscopy (FTIR) analysis confirms the chemical bonding between the silicon and SWCNTs. Finally, a graphical abstract is proposed to describe the implantation steps of SWCNTs on the porous silicon (pSi) having pyramidal structure.

Antibacterial, Flexible, and Conductive Membrane Based on MWCNTs/Ag Coated Electro-Spun PLA Nanofibrous Scaffolds as Wearable Fabric for Body Motion Sensing

“…When the MWCNTs and AgNPs was adhere onto the PLA matrix, this peak in both MPNM and MAPNM shifted a little to 1751 and 1753 cm −1 , which was might because the oxygen containing groups in acidified MWCNTs interacted with the groups in PLA through hydrogen bonding and/or ionic bonding [23]. Moreover, a series of new peaks at ~1550 cm −1 appeared in MPNM and MAPNM, which was ascribed to the vibrations of the benzene rings in MWCNTs [24]. Figure 3b shows the XRD patterns of PLA nanofibrous scaffolds, MPNM and MAPNM.…”

Enhancement of the photoluminescence property of hybrid structures using single-walled carbon nanotubes/pyramidal porous silicon surface

“…1). First, pyramidal silicon (pS) structures were formed after chemical etching in NaOH (1M) solution at 85 C during 6 min to remove Si damage (Table 1) [15,19,20].…”

“…A computer controlled current source was used to fabricate porous pyramidal structured silicon from the selected current density and time data, as shown in Table 1. After the electrochemical at tacks, all the samples were rinsed with ethanol and dried in the ambient air to form an oxide layer SiOx [15,21]. After that, APTES was prepared in the mixture with ethanol (Table 1) [15,21].…”

“…Recently, Gammoudi et al [15] have modified the silicon topography by a pPSi structure to increase the surface in contact with the carbon nanotube. Then, they have attached chemically SWCNTs on pPSi surface and into the nano pores of pPSi structure.…”

“…From an overview of the literature, we note that the use of pPSi surface modification with the SWCNT and the effects of SWCNTs on the luminescence of the of pPSi surface in such structures were not been extensively studied [15]. Thus, it would be quite interesting to make physical investigations for the PL properties of this hybrid structure, which could open alternative applications for pPSi as substrates in various optoelectronics and sensitivity devices.…”