One-pot synthesis of Mn3O4-coupled Ag2WO4 nanocomposite photocatalyst for enhanced photooxidative desulfurization of thiophene under visible light irradiation

Abstract

The photooxidative desulfurization of thiophene (ThP) becomes a challenge in both industry and environmental remediation. Herein, we synthesize a visible-light-responsive Ag 2 WO 4 /Mn 3 O 4 nanocomposite by a one-pot strategy. Depiction of the produced photocatalysts exposed the suppression of the surface structure and reduction of the bandgap energy by adding 15 wt% of Mn 3 O 4 to Ag 2 WO 4 . The obtained nanocomposite shows a complete photooxidation of ThP within 1 h under visible light illumination at a dose of 1.2 g L −1 . The significance of photocatalytic performance of Ag 2 WO 4 /Mn 3 O 4 nanocomposite photocatalyst is referred to the enhancement of the visible light absorption and overthrow of the recombination of photogenerated charge carriers. The study opens the door for extensive use of nanocomposite photocatalysts as a novel functional material for the photooxidation of ThPs under visible light exposure.

Synthesis and characterizations of ZnMn2O4-ZnO nanocomposite photocatalyst for enlarged photocatalytic oxidation of ciprofloxacin using visible light irradiation

“…And so, it is necessary to establish efficient and economical techniques to treat the produced contaminants. Previously, Many techniques have been accepted for the treatment of wastewater (Shawky et al 2019a(Shawky et al , 2020b. Some of these methods are: electrochemical and chemical approaches (Shawky et al 2019b;Mohamed et al 2019), chemical precipitation (Chen et al 2015a), sedimentation-flocculation (Miyauchi et al 2002), adsorption processes (Sudha and Sivakumar 2015), ion exchange (Yatmaz et al 2004), coagulation (Lee and Abd Hamid 2015), chlorination (Daneshvar et al 2004) and reverse osmosis (Hernández-Alonso et al 2009).…”

CoAl2O4–g-C3N4 Nanocomposite Photocatalysts for Powerful Visible-Light-Driven Hydrogen Production

“…The level of hydrogen production was at least 15,120 μmol g –1 when the photocatalyst content was greater than 2.4 g/L. This result may be due to an effective reduction in light penetration during the illumination process in the presence of a higher particle content in the reaction solution. − …”

Recent Advances and Challenges in Developing Technological Methods Assisting Oxidative Desulfurization of Liquid Fuels: A Review

“…Various types of photocatalysts, such as TiO 2 , , CeO 2 /TiO 2 , , CeO 2 /attapulgite (ATP)/g-C 3 N 4 , ATP-CeO 2 /MoS 2 , Fe 2 O 3 , TiO 2 /MoO 3 , Cu 2 O tetrapod/MWW, CuO rod/MWW, Cu 2 O–CeO 2 , BaFe 2 O 4 , Ag-AgBr/Al-MCM-41, Ti–Al–SBA-15, C/TiO 2 @MCM-41, graphene oxide (GO), Ag-BiVO 4 , Pt-RuO 2 /BiVO 4 , MoO 3 -TMU-5, C/TiO 2 @MCM-41, Ti 3 C 2 /g-C 3 N 4 , CeF 3 /g-C 3 N 4 , g-C 3 N 4 /ZnTcPc, MTcPc/SnO 2 , Ni–Co 2 layered double hydroxides (LDH)/Fe 3 O 4 , Ni–Fe 2 LDH, Co–Fe 2 LDH, Fe 3 O 4 @SiO 2 /Bi 2 WO 6 /Bi 2 S 3 , Cu/Cu 2 O/BiVO 4 /Bi 7 VO 13 , AgCl/PbMoO 4 , BiVO 4 (CoCuAl/BiVO 4 ), BiP 1– x V x O 4 /ATP, Ag 2 WO 4 /Mn 3 O 4 , Ag/AgI/α-MoO 3 , AgI/Bi 2 O 3 , and Ag–Bi 2 WO 6 , were employed in the PODS process.…”