Enhanced photocatalytic treatment of Cr(VI) and phenol by monoclinic BiVO4 with {010}-orientation growth
Source abstract
Abstract
Abstract Photocatalytic technology has unique advantages in the purification of organic wastewater containing chromium(VI). Simultaneously photodegradation efficiency of Cr(VI) and phenol was significantly enhanced over BiVO4 with {010}-oriented growth. In this study, the effect of pH values in photoreduction of Cr(VI) and concentrations of phenol in the simultaneous photocatalytic reaction process were systematically analyzed based on characterizations about material physical properties. The results suggested that the enhanced photocatalytic activity over {010}-oriented BiVO4 was attributed to sufficient utilization of surface junction between {010} and {110}. These junctions achieved higher separation efficiency and selectively transfer of photogenerated charge carriers between two surfaces. Thus the photoreduction of Cr(VI) and photooxidation of phenol can selectively occur on the different crystal surfaces. This study demonstrates the possibility of purification of organic wastewater containing toxic heavy metals such as Cr(VI) using photocatalytic technology and provides new ideas and methods for the design of highly active photocatalytic materials.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis · Pigment Synthesis and Properties
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References (35)
Show source-provided references
1. an amine-functionalized iron(III) metal-organic framework as efficient visible-light photocatalyst for Cr(VI) reduction10.1002/advs.201500006 ↗
2. Graphene/biofilm composites for enhancement of hexavalent chromium reduction and electricity production in a biocathode microbial fuel cell10.1016/j.jhazmat.2016.05.055 ↗
3. Chromium(VI) reductase activity is associated with the cytoplasmic membrane of anaerobically grown Shewanella putrefaciens MR-110.1046/j.1365-2672.2000.00910.x ↗
4. Adsorption of Cr(VI) from aqueous solution by hydrous zirconium oxide10.1016/j.jhazmat.2009.08.131 ↗
5. A review of chemical, electrochemical and biological methods for aqueous Cr(VI) reduction10.1016/j.jhazmat.2012.04.054 ↗
6. Chemical and microbial remediation of hexavalent chromium from contaminated soil and mining/metallurgical solid waste: a review10.1016/j.jhazmat.2013.01.048 ↗
7. Simultaneous photocatalytic Cr(VI) reduction and dye oxidation in a TiO2 slurry reactor10.1016/S1010-6030(01)00626-8 ↗
8. Removal of Cr(VI) and humic acid by using TiO2 photocatalysis10.1016/j.chemosphere.2005.10.005 ↗
9. Visible light induced photocatalytic reduction of Cr(VI) over polymer-sensitized TiO2 and its synergism with phenol oxidation10.1016/j.watres.2012.01.046 ↗
10. Influence of TiO2 hollow sphere size on its photo-reduction activity for toxic Cr(VI) removal10.1016/j.jcis.2016.11.025 ↗
11. Photocatalytic removal of hexavalent chromium by newly designed and highly reductive TiO2 nanocrystals10.1016/j.watres.2016.11.013 ↗
12. Enhanced photocatalytic degradation of aqueous phenol and Cr(VI) over visible-light-driven TbxOy loaded TiO2-oriented nanosheets10.1016/j.apsusc.2016.12.077 ↗
13. Coral-inspired nanoscale design of porous SnS2 for photocatalytic reduction and removal of aqueous Cr (VI)10.1016/j.apcatb.2017.02.050 ↗
14. Facile synthesis of porous single crystalline ZnO nanoplates and their application in photocatalytic reduction of Cr(VI) in the presence of phenol10.1016/j.jhazmat.2014.05.059 ↗
15. Visible light induced photocatalytic removal of Cr(VI) over TiO2-based nanosheets loaded with surface-enriched CoOx nanoparticles and its synergism with phenol oxidation10.1016/j.apcatb.2016.03.003 ↗
16. Carbon nitride coupled Ti-SBA15 catalyst for visible-light-driven photocatalytic reduction of Cr (VI) and the synergistic oxidation of phenol10.1016/j.apcatb.2016.08.001 ↗
17. Highly active BiVO4 nanoparticles: the enhanced photocatalytic properties under natural sunlight for removal of phenol from wastewater10.1016/j.seppur.2014.11.036 ↗
18. Monoclinic BiVO4 with regular morphologies: hydrothermal synthesis, characterization and photocatalytic properties10.1016/j.matchemphys.2009.01.014 ↗
19. Photocatalytic degradation and removal mechanism of ibuprofen via monoclinic BiVO4 under simulated solar light10.1016/j.chemosphere.2016.02.045 ↗
20. Simultaneous photocatalytic reduction of Cr(VI) and oxidation of phenol over monoclinic BiVO4 under visible light irradiation10.1016/j.chemosphere.2005.08.064 ↗
21. Spatial separation of photogenerated electrons and holes among {010} and {110} crystal facets of BiVO410.1038/ncomms2401 ↗
22. Photocatalytic degradation of phenol on MWNT and titania composite catalysts prepared by a modified sol–gel method10.1016/j.apcatb.2004.09.018 ↗
23. Visible light photodegradation of phenol on MWNT-TiO2 composite catalysts prepared by a modified sol–gel method10.1016/j.molcata.2005.02.027 ↗
24. Sol–gel synthesis of Au/TiO2 thin films for photocatalytic degradation of phenol in sunlight10.1016/j.molcata.2005.07.043 ↗
25. Preparation of titania/carbon nanotube composites using supercritical ethanol and their photocatalytic activity for phenol degradation under visible light irradiation10.1016/j.carbon.2007.04.034 ↗
26. Synthesis of monoclinic sheet-like BiVO4 with preferentially exposed (040) facets as a new yellow-green pigment10.1016/j.dyepig.2016.06.049 ↗
27. Efficient methylene blue removal over hydrothermally synthesized starlike BiVO410.1021/ie801516u ↗
28. The synthesis of bismuth vanadate powders and their photocatalytic properties under visible light irradiation10.1016/j.jallcom.2010.01.144 ↗
29. Template-free synthesis of monoclinic BiVO4 with porous structure and its high photocatalytic activity10.3390/ma9080685 ↗
30. Morphological effect of BiVO4 catalysts on degradation of aqueous paracetamol under visible light irradiation10.1007/s11356-016-6975-8 ↗
31. Efficient removal rhodamine B over hydrothermally synthesized fishbone like BiVO410.1016/j.materresbull.2013.06.075 ↗
32. Crystal-face-dependent charge dynamics on a BiVO4 photocatalyst revealed by single-particle spectroelectrochemistry10.1021/acscatal.6b00234 ↗
33. Removal of aqueous Cr(VI) by a combination of photocatalytic reduction and coprecipitation10.1021/ie030580j ↗
34. The simultaneous photocatalytic degradation of phenol and reduction of Cr(VI) by TiO2/CNTs10.1016/j.jiec.2011.11.060 ↗
35. Ag doping of Zn-In-S quantum dots for photocatalytic hydrogen evolution: simultaneous bandgap narrowing and carrier lifetime elongation10.1016/j.apcatb.2017.05.050 ↗