Synthesis of V₂O₅ Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye

Abstract

The visible-light-driven semiconductor photocatalysts are the current research focus techniques used to decompose organic pollutants/compounds. The photodegradation efficiency of organic compounds by photocatalyst is expected to be better compared to UV-light-driven semiconductor photocatalysts technique since the major components of our solar energy are visible light (∼44%). However, as most of the previous research work has been carried out using semiconductor photocatalysts in the form of powder, extra steps and costs are needed to remove this powder from the slurry to prevent secondary pollution. In this research work, we will explain our fabrication technique of V 2 O 5 nanoflakes by growing radially on PET fibers. By utilizing the flexibility and high surface area of polymeric fibers as novel substrate for the growth of V 2 O 5 nanoflakes, the Rhodamine B (RhB) could be degraded under visible light irradiation. The photodegradation of RhB solution by V 2 O 5 nanoflakes followed the 1st order kinetic with a constant rate of 0.0065 min −1 . The success of this research work indicates that V 2 O 5 nanoflakes grown on PET fibre could be possibly used as organic waste water purifier under continuous flow condition. A photodegradation mechanism of V 2 O 5 nanostructures to degrade RhB dye is proposed based on the energy diagram.

Experimental and Computational Analysis of MnO2@V2C-MXene for Enhanced Energy Storage

“…This broadening of peaks is a result of reduced crystallinity of MnO 2 over V 2 CT x sheets. A small peak of V 2 O 5 near a 2Ө value of 42.7° can be observed, which is produced as a result of heat produced during the etching process [ 41 ]. Vanishing of the (002) diffraction peak with the increased weight percent of MnO 2 is a result of decreased crystallinity of the MnO 2 -V 2 CT x nanocomposites.…”

Highly efficient and visible light–driven nickel–doped vanadium oxide photocatalyst for degradation of Rhodamine B Dye

“…6a (Rafique et al 2019b). It was observed that absorbance peak is decreased with passage of irradiation time due to cycloreversion process in which breakage of π* bond of rhodamine B by radicals occur ( 4) (Chan et al 2014). Figure 6a depicts that the catalyst is very efficient and presented high performance with increase in time of exposure.…”

“…In AOP, highly reactive radicals are generated that convert the organic pollutants into less hazardous products having potential to oxidize them. Many nanomaterials such as metal oxide semiconductors including zinc oxide (ZnO) (Aziz et al 2014;Chan et al 2013;Daneshvar et al 2007;Hong et al 2009;Xie et al 2011), titanium dioxide (TiO 2 ) (Chan et al 2014;Esfahani et al 2012;Smijs and Pavel 2011), Copper oxide (CuO) (Mehr et al 2018), Tungsten Oxide (WO 3 ) (Tahir et al 2018b) have been reported as wide band gap photocatalyst for degradation of pollutants under the Ultraviolet (UV) light. As the solar light spectrum contains 45% of visible light and less than 10% of UV light (Chan et al 2014).…”

“…Many nanomaterials such as metal oxide semiconductors including zinc oxide (ZnO) (Aziz et al 2014;Chan et al 2013;Daneshvar et al 2007;Hong et al 2009;Xie et al 2011), titanium dioxide (TiO 2 ) (Chan et al 2014;Esfahani et al 2012;Smijs and Pavel 2011), Copper oxide (CuO) (Mehr et al 2018), Tungsten Oxide (WO 3 ) (Tahir et al 2018b) have been reported as wide band gap photocatalyst for degradation of pollutants under the Ultraviolet (UV) light. As the solar light spectrum contains 45% of visible light and less than 10% of UV light (Chan et al 2014). Therefore, it has become huge challenge for the researchers to develop photocatalyst which could become active under the visible light.…”

“…ZnO nanorods and nanostructures have become visible light responsive for photodegradation of organic pollutants when doped with Copper (Cu) and Cadmium (Cd) (Mohan et al 2012;Zhang and Zeng 2012). Besides, the narrow band gap semiconductors like manganese oxide (MnO 2 ) (Cheng et al 2010) and vanadium oxide (V 2 O 5 ) (Chan et al 2014) can also be used as visible light photocatalyst and can further be tuned by doping. V 2 O 5 nanoparticle with average size of 22 nm under the illumination of visible light degraded the 81% of methylene blue (MB) in short interval of time (Kruefu 2017).…”