Graphene Oxide Coated Zinc Oxide Core–Shell Nanofibers for Enhanced Photocatalytic Performance and Durability

Abstract

Recently, heterogeneous structured semiconductor photocatalysts have received significant interest in promoting global cleaning from the environmental pollution. Herein, we report the synthesis of graphene oxide (GO) wrapped zinc oxide (ZnO) core–shell nanofibers (ZnO@G CSNFs) by the simple core–shell electrospinning and subsequent annealing for efficient photocatalytic performance and stability. The heterostructured catalyst consisted of ZnO forming an enclosed core part while the GO was positioned on the surface, serving as a protective shell. Field emission scanning electron microscopy, high-resolution transmission electron microscopy and X-ray diffraction were used to confirm the synthesis of the desired product. Enhanced photocatalytic activity ZnO@G CSNFs was found compared to the corresponding ZnO NFs. Similarly, incorporation of GO into the ZnO nanofiber in a core–shell format significantly suppressed the photocorrosion. This study highlights the usefulness of using GO as the coating material to boost the photocatalytic performance of ZnO-based photocatalysts.

Designing of Nanomaterials-Based Enzymatic Biosensors: Synthesis, Properties, and Applications

“…Over the past few decades, nanostructured materials have considerably changed the analytical and bioanalytical sciences [75]. Nanomaterials have been showing a fundamental role in the expansion of this science to the most diverse industrial fields, such as fuel, energy storage, energy conversion, nanocatalysis, integrated catalysis, industrial waste treatment, biomedicine, food, and bioengineering, among others [61,62,[75][76][77][78][79][80][81][82][83][84][85][86][87][88] (Figure 3). nanocatalysis, integrated catalysis, industrial waste treatment, biomedicin bioengineering, among others [61,62,[75][76][77][78][79][80][81][82][83][84][85][86][87][88] (Figure 3).…”

“…Nanomaterials have been showing a fundamental role in the expansion of this science to the most diverse industrial fields, such as fuel, energy storage, energy conversion, nanocatalysis, integrated catalysis, industrial waste treatment, biomedicine, food, and bioengineering, among others [61,62,[75][76][77][78][79][80][81][82][83][84][85][86][87][88] (Figure 3). nanocatalysis, integrated catalysis, industrial waste treatment, biomedicin bioengineering, among others [61,62,[75][76][77][78][79][80][81][82][83][84][85][86][87][88] (Figure 3). Among organic nanomaterials, nanotubes stand out due to their high resistance and capillarity, and their unique electronic structure [73].…”

Fabrication and Properties of Electrospun and Electrosprayed Polyethylene Glycol/Polylactic Acid (PEG/PLA) Films

“…The microstructure of the as-prepared PEG/PLA films shown in Figure 1 significantly changed due to varying the precursor electrospinning solution. PLA25 and PLA35 PEG/PLA films exhibited typical morphologies for the electrospinning method [23][24][25][26][27][28][29][30][31][32][33][34][35], while the PLA45 PEG/PLA film showed the characteristic electrosprayed microstructure [33][34][35]. For the PLA25 film derived from solution PLA25 with the lowest PLA content of 25 wt.%, the outerdiameter (O.D.)…”

“…The objective of this work is to prepare novel films with high cooling performance, good wetting and adsorption properties, as well as considerable mechanical properties for HNB tobacco application. The electrospinning technique has been considered as one of the most efficient ways to fabricate continuous fibers in the submicron to nanometer scale range, and the microstructure of the fibers is highly dependent on electrospinning parameters such as precursor electrospinning solution, operating voltage and the distance from the collector to the needle [23][24][25][26][27][28][29][30][31][32][33][34][35]. Therefore, in the present work, three typical electrospun/electrosprayed PEG/PLA films with different morphologies were prepared by using the simple electrospinning or electrospray method and adjusting the PLA content and precursor electrospinning solution.…”

Electrospun Nanofiber-Based Viroblock/ZnO/PAN Hybrid Antiviral Nanocomposite for Personal Protective Applications

“…Herein, considering the current COVID-19 pandemic situation and excessive demand for protective clothing, we are the first to present a robust methodology to develop efficient antiviral and antibacterial electrospun nanofibrous membranes by incorporating HeiQ Viroblock (VB) and ZnO nanoparticles in a polyacrylonitrile (PAN) electrospun solution. Zinc oxide is a multifunctional material with exceptional properties (photocatalysis, antibacterial properties, ultraviolet (UV) protector) [ 30 , 31 ], but in this specific study, it acted as an antibacterial agent. HeiQ Viroblock is a white viscous liquid that encompasses two main components, namely a vesicle component and a silver component [ 32 ].…”