Langmuir-Blodgett assembly of visible light responsive TiO2 nanotube arrays/graphene oxide heterostructure

Abstract

The hybrid nanocomposites of titanium dioxide (TiO 2) with graphene oxide (GO) have recently garnered much attention as electronic devices, energy conversion devices, photocatalysts and other applications. In this study, Langmuir-Blodgett (LB) assembly method was firstly reported to prepare a TiO 2 nanotube arrays (TNA)-GO heterostructure. The as-prepared TNA-GO sample was characterized by X-ray diffraction, Raman spectra, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The promising characteristics of this TNA-GO material, the inexpensive, nontoxic and highly visible-light responsiveness, may raise the potential uses in many, various photocatalytic applications.

TiO2/rGO/CuS Nanocomposites for Efficient Photocatalytic Degradation of Rhodamine‐B Dye

“…The figure (b) shows high resolution XPS spectrum of Ti (2p). The spin orbital peaks of TiO 2 corresponding to Ti (2p 3/2 ) and Ti (2p 1/2 ) appear at 457.0 eV and 463.8 eV respectively, which indicate that Ti exists in Ti 4+ state . Figure (c) shows spectrum for O (1 s), the peaks at 528.4 eV and a broad shoulder at 529.8 eV are assigned to Ti−O and Ti‐O−C respectively.…”

TiO2‐Graphene Nanocomposites for Effective Photocatalytic Degradation of Rhodamine‐B Dye

“…It is reported that after the interface the band gap tends to narrow and red shift is observed. This chemical bond play an important role in the enhanced photocatalytic activity in the degradation of Rhodamine B ,. Figure (d) shows C1 spectra which can be deconvoluted in to three peaks at 283.3 eV, 284.8 eV and 287.3 eV are corresponding to C−C, C−O and C=O respectively .…”

Recent Development in Laminar Transition Metal Dichalcogenides‐Based Membranes Towards Water Desalination: A Review

“…In addition, the main advantage of this method is that monolayers can be deposited onto almost all types of solid substrate. In this deposition process, dispersion is evaporated onto the immiscible liquid substrate in the LB trough (Figure 2b) [70] . Movable barrier is used to compress the layer to obtained mono‐layer or sub‐monolayer membrane.…”

“…Langmuir‐Blodgett (LB) [70] is one of the most promising technique to provide a high degree of control over the thickness of membrane, and homogenous coating of material compared to other fabrication processes. In addition, the main advantage of this method is that monolayers can be deposited onto almost all types of solid substrate.…”

“…In this deposition process, dispersion is evaporated onto the immiscible liquid substrate in the LB trough (Figure 2b). [70] Movable barrier is used to compress the layer to obtained mono-layer or submonolayer membrane. Further, membrane can be deposited at liquid-solid interface by immersing substrate into dispersion layer or removal of a pre-submerged substrate.…”