Synthesis of Er3+/Zn2+ co-doped Bi2WO6 with highly efficient photocatalytic performance under natural indoor weak light illumination
Source abstract
Abstract
Abstract A novel Zn2+ and Er3+ co-doped Bi2WO6 (Zn-Er-Bi2WO6) photocatalysts have been successfully synthesized for the first time. The photodegradation activity of the obtained samples was investigated under natural indoor weak light illumination using the Rhodamine dye in aqueous solution. While the light intensity of degradation process is measured to be about 2000 Lux (merely 1% of 300 W Xe lamp), it is amazing that RhB dye can be completely degraded within 150 min, but only 36% of dye was degraded by pure Bi2WO6 at the same condition. In all photocatalysts including pure Bi2WO6, Zn-Bi2WO6, Er-Bi2WO6, Zn-Er-Bi2WO6 series, 9%Zn-7%Er-Bi2WO6 presents the best degradation efficiency and corresponding kinetic constant is 0.022 min−1, approximately 8 times higher than that (0.0029 min−1) of pure Bi2WO6. This natural indoor weak sunlight-driven degradation reaction does not need an extra optical system that inevitably consumes fossil resources, therefore it is a green, energy-saving environmental cleaning strategy. In addition, Zn-Er-Bi2WO6 is only weakly sensitive to pH changes, indicating its potential application in the aqueous systems with different pH values. Also, a possible mechanism is proposed to explain the procedure of photodegradation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Novel luminescent photocatalytic deNOx activity of CaAl2O4:(Eu, Nd)/TiO2−xNy composite10.1016/j.apcatb.2011.06.019 ↗
2. Toward solar fuels: photocatalytic conversion of carbon dioxide to hydrocarbons10.1021/nn9015423 ↗
3. Redox shuttle mechanism enhances photocatalytic H2 generation on Ni-decorated CdS nanorods10.1038/nmat4049 ↗
4. Different upconversion properties of beta-NaYF4:Yb3+,Tm3+/Er3+ in affecting the near-infrared-driven photocatalytic activity of high-reactive TiO210.1021/am404389g ↗
5. NiZnAl layered double hydroxides as photocatalyst under solar radiation for photocatalytic degradation of orange G10.1016/j.seppur.2014.05.026 ↗
6. Optimization of operating parameters for photocatalytic degradation of tetracycline using In2S3 under natural solar radiation10.1016/j.solener.2014.12.022 ↗
7. Preparation of N-doped TiO2: characterization and photocatalytic performance under UV and visible light10.1039/b816708g ↗
8. Advanced nanoarchitectures for solar photocatalytic applications10.1021/cr100454n ↗
9. Anatase TiO2 single crystals with a large percentage of reactive facets10.1038/nature06964 ↗
10. Visible-light-induced degradation of rhodamine B by nanosized Bi2WO610.1021/jp052995j ↗
11. Hydrothermal synthesis of Bi2WO6 uniform hierarchical microspheres10.1021/cg070343+ ↗
12. Synthesis of square Bi2WO6 nanoplates as high-activity visible-light-driven photocatalysts10.1021/cm0501517 ↗
13. Bi2WO6 nano-and microstructures: shape control and associated visible-light-driven photocatalytic activities10.1002/smll.200700043 ↗
14. Visible-light photocatalysis in nitrogen-doped titanium oxides10.1126/science.1061051 ↗
15. Nitrogen-doped carbon nanotube arrays with high electrocatalytic activity for oxygen reduction10.1126/science.1168049 ↗
16. Carbon-doped anatase TiO2 powders as a visible-light sensitive photocatalyst10.1246/cl.2003.772 ↗
17. Photocatalytic activity of S-doped TiO2 photocatalyst under visible light10.1246/cl.2003.364 ↗
18. Ferromagnetism above room temperature in bulk and transparent thin films of Mn-doped ZnO10.1038/nmat984 ↗
19. Fe-ions modified mesoporous Bi2WO6 nanosheets with high visible light photocatalytic activity10.1016/j.jcis.2011.12.007 ↗
20. Synthesis and activity of Ag-Doped Bi2WO6 photocatalysts10.4028/www.scientific.net/MSF.743-744.560 ↗
21. Photocatalytic degradation of phenol-containing wastewaterover Cu-Bi2WO6 composite under visible light irradiation
22. Influences of Gd substitution on the crystal structure and visible-light-driven photocatalytic performance of Bi2WO610.1021/jp500645p ↗
23. Enhanced photocatalytic performance of boron doped Bi(2)WO(6) nanosheets under simulated solar light irradiation10.1016/j.jhazmat.2013.03.046 ↗
24. Photocatalytic activity enhancement for Bi2WO6 by fluorine substitution10.1021/jp906680e ↗
25. The effects of Br dopant on the photo-catalytic properties of Bi2WO610.1016/j.mseb.2015.12.004 ↗
26. Analysis of electronic structures of 3d transition metal-doped TiO2 based on band calculations10.1016/S0022-3697(02)00177-4 ↗
27. Design of narrow-gap TiO2: a passivated codoping approach for enhanced photoelectrochemical activity10.1103/PhysRevLett.102.036402 ↗
28. Enhanced photocatalytic activities of Bi2WO6 by introducing Zn to replace Bi lattice sites: a first-principles study10.1039/C5RA02735G ↗
29. Role of self-assembly coated Er(3+): YAlO3/TiO2 in intimate coupling of visible-light-responsive photocatalysis and biodegradation reactions10.1016/j.jhazmat.2015.10.007 ↗
30. Novel Y doped Bi2WO6 photocatalyst: hydrothermal fabrication, characterization and enhanced visible-light-driven photocatalytic activity for Rhodamine B degradation and photocurrent generation10.1016/j.matchar.2015.01.016 ↗
31. Monolayered Bi2WO6 nanosheets mimicking heterojunction interface with open surfaces for photocatalysis10.1038/ncomms9340 ↗
32. Enhanced photocatalytic activity of ZnWO4 catalyst via fluorine doping10.1021/jp071987v ↗
33. ZnO rods/reduced graphene oxide composites prepared via a solvothermal reaction for efficient sunlight-driven photocatalysis10.1016/j.apcatb.2015.12.007 ↗
34. Synthesis of chemically bonded BiOCl@Bi2WO6 microspheres with exposed (020) Bi2WO6 facets and their enhanced photocatalytic activities under visible light irradiation10.1016/j.apsusc.2015.11.130 ↗
35. Highly selective CO2 photoreduction to CO over g-C3N4/Bi2WO6 composites under visible light10.1039/C4TA06295G ↗
36. Enhanced photocatalytic activity of Bi2WO6/TiO2 nanotube array composite under visible light irradiation10.1016/j.seppur.2013.09.032 ↗
37. Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984)10.1351/pac198557040603 ↗
38. Effects of Mo replacement on the structure and visible-light-induced photocatalytic performances of Bi2WO6 photocatalyst10.1021/cs200155z ↗
39. AgInZn7S9 solid solution photocatalyst for H2 evolution from aqueous solutions under visible light irradiation10.1039/b204259b ↗
40. Novel BiOCl–C3N4 heterojunction photocatalysts: in situ preparation via an ionic-liquid-assisted solvent-thermal route and their visible-light photocatalytic activities10.1016/j.cej.2013.08.112 ↗
41. Enhanced visible light photocatalysis of Bi2O3 upon fluorination10.1021/jp406834d ↗