Photodegradation of organic dyes by CeO2/Bi2WO6 nanocomposite and its physicochemical properties investigation
Source abstract
Abstract
Abstract The CeO 2 /Bi 2 WO 6 nanocomposite was synthesized by coupling of precipitation and hydrothermal methods. A detailed study of the physicochemical properties of CeO 2 /Bi 2 WO 6 nanocomposite were investigated by XRD, TEM, BET-specific surface area, UV–vis DRS, XPS, zeta potential, and PL techniques. The photocatalytic activities of CeO 2 /Bi 2 WO 6 nanocomposite was evaluated for the degradation of methylene blue (MB), rhodamine B (RhB) and the mixed dyes of MB and RhB under visible light irradiation. The CeO 2 /Bi 2 WO 6 nanocomposite presents excellent photocatalytic degradation of MB, RhB, and the mixed dyes of MB and RhB. The enhanced photocatalytic activity was originated from the migration efficiency of photogenerated charge carriers on the interface of CeO 2 and Bi 2 WO 6 . Moreover, the active species trapping experiments demonstrated holes (h + ) and hydroxyl radical (OH ⋅ ) were major active species in the degradation of RhB and MB, respectively. Herein, we also investigate the produced hydroxyl radical as a main oxidant in photocatalysis process for improving photocatalytic performance. Moreover, the CeO 2 /Bi 2 WO 6 nanocomposites shows excellent cycle stability toward continuous five cycles runs of photocatalytic experiment for dyes degradation. The possible photocatalytic mechanism of CeO 2 /Bi 2 WO 6 nanocomposite was described.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Pigment Synthesis and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Photoredox degradation of different water pollutants (MO, RhB, MB and Cr(VI)) using Fe-N-S-tri-doped TiO2 nanophotocatalyst prepared by novel chemical method10.1016/j.materresbull.2015.04.020 ↗
2. A facile one-pot synthesis of TiO2-based nanosheets loaded with MnxOy nanoparticles with enhanced visible light-driven photocatalytic performance for removal of Cr(VI) or RhB10.1016/j.apcatb.2015.05.059 ↗
3. Synthesis of g-C3N4/SmVO4 composite photocatalyst with improved visible light photocatalytic activity in RhB degradation10.1016/j.apcatb.2012.09.031 ↗
4. Heterostructure of Ag3PO4/TiO2 mesoporous sphere with highly efficient visible light photocatalytic activity10.1016/j.jcis.2015.03.016 ↗
5. P3HT/Bi2MoO6 heterojunction with enhanced photocatalytic activity10.1016/j.matlet.2015.11.089 ↗
6. Inductive effect of poly(vinyl pyrrolidone) on morphology and photocayalytic performance of Bi2WO610.1016/j.apsusc.2016.01.272 ↗
7. A controlled anion exchange strategy to synthesize Bi2S3 nanoparticles/plate-like Bi2WO6 heterostructures with enhanced visible light photocatalytic activities for Rhodamine B10.1016/j.ceramint.2015.10.105 ↗
8. Preparation and visible light photocatalytic activity of Bi2O3/Bi2WO6 heterojunction photocatalysts10.1016/j.jssc.2011.05.057 ↗
9. Investigation of photocatalytic activities over Bi2WO6/ZnWO4 composite under UV light and its photoinduced charge transfer properties10.1021/am200664y ↗
10. Enhanced photocatalytic activity of hierarchical flower-like CeO2/TiO2 heterostructures10.1016/j.matlet.2016.03.136 ↗
11. Synthesis and characterization of CeO2/TiO2 nanotube arrays and enhanced photocatalytic oxidative desulfurization performance10.1016/j.jallcom.2015.11.148 ↗
12. One-step hydrothermal preparation strategy for nanostructured WO3/Bi2WO6 heterojunction with high visible light photocatalytic activity10.1016/j.cej.2012.05.032 ↗
13. A thermally stable mesoporous ZrO2-CeO2-TiO2 visible light photocatalyst10.1016/j.cej.2013.05.106 ↗
14. A novel CeO2/Bi2WO6 composite with highly enhanced photocatalytic activity10.1016/j.matlet.2015.04.139 ↗
15. Photocatalytic oxidation of organic dyes and pollutants in wastewater using different modified titanium dioxides: a comparative review10.1016/j.jiec.2014.10.043 ↗
16. In situ capture of active species and oxidation mechanism of RhB and MB dyes over sunlight-driven Ag/Ag3PO4 plasmonic nanocatalyst10.1016/j.apcatb.2012.05.043 ↗
17. Band-gap energy estimation from diffuse reflectance measurements on sol-gel and commercial TiO2: a comparative study10.1007/s10971-011-2582-9 ↗
18. Effect of metal-doping of TiO2 nanoparticles on their photocatalytic activities toward removal of organic dyes10.1016/j.ejpe.2014.09.010 ↗
19. Cooperative self-construction and enhanced optical absorption of nanoplates-assembled hierarchical Bi2WO6 flowers10.1016/j.jssc.2008.01.049 ↗
20. Effects of pH on the microstructures and photocatalytic activity of mesoporous nanocrystalline titania powders prepared via hydrothermal method10.1016/j.molcata.2006.05.036 ↗
21. Direct bandgap narrowing of TiO2/MoO3 heterostructure composites for enhanced solar-driven photocatalytic activity10.1016/j.solmat.2016.04.013 ↗
22. Enhanced photocatalytic performance of ZnO/rGO composite materials prepared via an improved two-step method10.1016/j.ceramint.2016.01.175 ↗
23. Highly efficient photocatalysis toward tetracycline under simulated solar-light by Ag+-CDs-Bi2WO6: synergistic effects of silver ions and carbon dots10.1016/j.apcatb.2016.03.045 ↗
24. Gold clusters on WO3 nanoneedles grown via AACVD: XPS and TEM studies10.1016/j.matchemphys.2012.03.073 ↗
25. XPS studies of active elements surface of gas sensors based on WO3−x nanoparticles10.1016/j.elspec.2006.12.059 ↗
26. STM and XPS study of CeO2(111) reduction by atomic hydrogen10.1016/j.susc.2014.05.008 ↗
27. Electrospinning preparation of one-dimensional ZnO/Bi2WO6 heterostructured sub-microbelts with excellent photocatalytic performance10.1016/j.jallcom.2015.12.050 ↗
28. Fabrication of a novel p-n heterojunction photocatalyst n-BiVO4@p-MoS2 with core-shell structure and its excellent visible-light photocatalytic reduction and oxidation activities10.1016/j.apcatb.2015.12.023 ↗
29. α-Fe2O3 modified Bi2WO6 flower-like mesostructures with enhanced photocatalytic performance10.1016/j.materresbull.2013.09.031 ↗
30. Magnetically recoverable Bi2WO6-Fe3O4 composite photocatalysts: Fabrication and photocatalytic activity10.1016/j.cej.2012.06.104 ↗
31. Facile synthesis of ultrafine CuS nanocrystalline/TiO2: Fe nanotubes hybrids and their photocatalytic and Fenton-like photocatalytic activities in the dye degradation10.1016/j.micromeso.2016.02.038 ↗
32. A controlled anion exchange strategy to synthesize Bi2S3 nanoparticles/plate-like Bi2WO6 heterostructures with enhanced visible light photocatalytic activities for Rhodamine B10.1016/j.ceramint.2015.10.105 ↗
33. Electrospinning preparation of one-dimensional ZnO/Bi2WO6 heterostructured sub-microbelts with excellent photocatalytic performance10.1016/j.jallcom.2015.12.050 ↗
34. Enhanced visible-light photocatalytic activities and mechanism insight of BiVO4/Bi2WO6 composites with virus-like structures10.1016/j.apsusc.2015.08.004 ↗
35. Controllable synthesis of Bi2WO6(001)/TiO2(001) heterostructure with enhanced photocatalytic activity10.1016/j.jallcom.2016.03.090 ↗
36. Enhanced visible light photocatalytic activity by Cu2O-coupled flower-like Bi2WO6 structures10.1016/j.apsusc.2015.12.170 ↗
37. Enhancement of visible-light photocatalytic activity of silver and mesoporous carbon co-modified Bi2WO610.1016/j.apsusc.2015.01.122 ↗
38. Synthesis of buckhorn-like BiVO4 with a shell of CeOx nanodots: Effect of heterojunction structure on the enhancement of photocatalytic activity10.1016/j.apcatb.2015.01.044 ↗
39. Enhanced visible-light photocatalytic activities and mechanism insight of BiVO4/Bi2WO6 composites with virus-like structures10.1016/j.apsusc.2015.08.004 ↗
40. Enhanced photocatalytic activity of MWCNT/TiO2 heterojunction photocatalysts obtained by microwave assisted synthesis10.1016/j.cattod.2015.12.005 ↗
41. Quantification of hydroxyl radicals on cementitious materials by fluorescence spectrophotometry as a method to assess the photocatalytic activity10.1016/j.cemconres.2015.04.011 ↗