Hierarchical assembly of visible-light-driven Bi2MoO6/TiO2/sepiolite composite for effective formaldehyde removal
Source abstract
Abstract
Novel Bi 2MoO 6/TiO 2/sepiolite ternary composite with hierarchical structure was designed through coupling Bi 2MoO 6/TiO 2 heterojunction and sepiolite, which was synthesized through a hydrolysis precipitation route combining with the one-pot solvothermal procedure. Under visible light, the obtained Bi 2MoO 6/TiO 2/sepiolite composite exhibited highly enhanced photocatalytic formaldehyde (HCHO) removal efficiency (0.02152 min −1), which is nearly 17.08, 14.84, 3.27, 2.98 and 2.46 times higher than that of TiO 2, TiO 2/sepiolite, Bi 2MoO 6, Bi 2MoO 6/sepiolite and Bi 2MoO 6/TiO 2 , respectively. After serious evaluation, it indicated that the significantly enhanced photodegradation performance for HCHO can be ascribed to the construction of ternary hierarchical composite through coupling the sepiolite and Bi 2MoO 6/TiO 2 heterojunction, leading to the increased adsorption capacity, extended absorption in the visible light region and effective separation of photoinduced carriers. The radicals trapping experiments revealed that the holes are the main active radicals. Moreover, this work provided the detailed reaction mechanism of photocatalytic HCHO removal. Notably, our study is expected to develop a promising visible-light-driven photocatalyst for remedying indoor gas based on the construction of ternary composite derived from sepiolite.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Pigment Synthesis and Properties · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Effect of pH on the photocatalytic removal of silver ions by β-MnO2 particles10.1007/s12613-020-2062-8 ↗
2. Preparation of the TiO2/graphic carbon nitride core–shell array as a photoanode for efficient photoelectrochemical water splitting10.1021/acs.langmuir.6b03107 ↗
3. Electrochemical photolysis of water at a semiconductor electrode10.1038/238037a0 ↗
4. The effective strategies of preparing black F-TiIII-codoping TiO2 anchored on sepiolite for enhanced photodegradation10.1016/j.clay.2021.106116 ↗
5. Enhanced visible-light photocatalytic activity of Bi2MoO6 nanoplates with heterogeneous Bi2MoO6-x@Bi2MoO6 core-shell structure10.1016/j.apcatb.2017.11.030 ↗
6. Zn-vacancy mediated electron-hole separation in ZnS/g-C3N4 heterojunction for efficient visible-light photocatalytic hydrogen production10.1016/j.apcatb.2018.02.006 ↗
7. Novel visible-light-responsive rGO-ZnO@Bi2MoO6 nanocomposite with enhanced light harvesting and Z-scheme charge transfer for photodegradation and detoxification of RhB10.1016/j.solidstatesciences.2019.105934 ↗
8. Environmental applications of semiconductor photocatalysis10.1021/cr00033a004 ↗
9. Synthesis of novel ternary heterogeneous BiOCl/TiO2/sepiolite composite with enhanced visible-light-induced photocatalytic activity towards tetracycline10.1016/j.jcis.2018.08.077 ↗
10. Multidimensional assembly of oxygen vacancy-rich amorphous TiO2-BiOBr-sepiolite composite for rapid elimination of formaldehyde and oxytetracycline under visible light10.1016/j.jcis.2020.04.035 ↗
11. Multidimensional assembly of oxygen vacancy-rich amorphous TiO2-BiOBr-sepiolite composite for rapid elimination of formaldehyde and oxytetracycline under visible light10.1016/j.jcis.2020.04.035 ↗
12. Enhanced photocatalytic removal of indoor formaldehyde by ternary heterogeneous BiOCl/TiO2/sepiolite composite under solar and visible light10.1016/j.buildenv.2019.106481 ↗
13. Formaldehyde and volatile organic compound (VOC) emissions from particleboard: identification of odorous compounds and effects of heat treatment10.1016/j.buildenv.2017.03.004 ↗
14. Flowing nitrogen atmosphere induced rich oxygen vacancies overspread the surface of TiO2/kaolinite composite for enhanced photocatalytic activity within broad radiation spectrum10.1016/j.apcatb.2018.04.083 ↗
15. Acetic acid functionalized TiO2/kaolinite composite photocatalysts with enhanced photocatalytic performance through regulating interfacial charge transfer10.1016/j.jcat.2018.09.001 ↗
16. Flame retardant and visible light-activated Fe-doped TiO2 thin films anchored to wood surfaces for the photocatalytic degradation of gaseous formaldehyde10.1016/j.jcis.2018.06.066 ↗
17. Preparation of heterogeneous TiO2/g-C3N4 with a layered mosaic stack structure by use of montmorillonite as a hard template approach: TC degradation, kinetic, mechanism, pathway and DFT investigation10.1016/j.clay.2021.106107 ↗
18. A simple method to prepare g-C3N4-TiO2/waste zeolites as visible-light-responsive photocatalytic coatings for degradation of indoor formaldehyde10.1016/j.jhazmat.2019.01.082 ↗
19. Honeycomb-like micro-mesoporous structure TiO2/sepiolite composite for combined chemisorption and photocatalytic elimination of formaldehyde10.1016/j.micromeso.2017.04.029 ↗
20. Binary-phase TiO2 modified Bi2MoO6 crystal for effective removal of antibiotics under visible light illumination10.1016/j.materresbull.2019.01.002 ↗
21. Performance of a biological degradation method for indoor formaldehyde removal10.1016/j.buildenv.2012.05.007 ↗
22. Impact of Ag nanoparticles on photomineralization of chlorobenzene by TiO2/bentonite nanocomposite10.1016/j.jece.2016.12.042 ↗
23. Photocatalytic purification of volatile organic compounds in indoor air: a literature review10.1016/j.atmosenv.2009.01.034 ↗
24. Hydrothermal synthesis of Bi2MoO6 visible-light-driven photocatalyst10.1155/2015/135735 ↗
25. TiO2 photocatalyst for removal of volatile organic compounds in gas phase – a review10.1016/j.cej.2017.09.153 ↗
26. Fabrication of novel cyanuric acid modified g-C3N4/kaolinite composite with enhanced visible light-driven photocatalytic activity
27. Passive photo-catalytic destruction of air-borne VOCs in high traffic areas using TiO2-coated flexible PVC sheet10.1016/j.cej.2014.10.040 ↗
28. Photodegradation of formaldehyde by activated carbon loading TiO2 synthesized via microwave irradiation10.1007/s11814-014-0338-2 ↗
29. Study of formaldehyde adsorption on silicene with point defects by DFT method10.1039/C5RA12096A ↗
30. Pt-TiO2 microspheres with exposed {001} facets for degradation of formaldehyde in air: formation mechanism and enhanced visible light photocatalytic activity10.1016/j.materresbull.2017.01.050 ↗
31. Three-dimensional Bi2MoO6/TiO2 array heterojunction photoanode modified with cobalt phosphate cocatalyst for high-efficient photoelectrochemical water oxidation10.1016/j.cattod.2018.11.054 ↗
32. A comparative photocatalytic study of TiO2 loaded on three natural clayswith different morphologies10.1016/j.clay.2019.105352 ↗
33. Engineering of Z-scheme 2D/3D architectures with Bi2MoO6 on TiO2 nanosphere for enhanced photocatalytic 4-nitrophenol degradation10.1016/j.jtice.2019.09.024 ↗
34. Prediction of structural and electronic properties of Cl2 adsorbed on TiO2 (100) surface with C or CO in fluidized chlorination process: a first-principles study10.1007/s11771-021-4583-3 ↗
35. Sn/Sn3O4x heterostructure rich in oxygen vacancies with enhanced visible light photocatalytic oxidation performance10.1007/s12613-020-2131-z ↗
36. Mt-supported ZnO/TiO2 nanocomposite for agricultural antibacterial agent involving enhanced antibacterial activity and increased wettability10.1016/j.clay.2021.106296 ↗
37. One-dimensional Bi2MoO6/TiO2 hierarchical heterostructures with enhanced photocatalytic activity10.1039/C1CE05974B ↗
38. Enhanced visible-light-assisted peroxymonosulfate activation over MnFe2O4 modified g-C3N4/diatomite composite for bisphenol A degradation10.1016/j.ijmst.2021.11.008 ↗
39. γ-ray induced formation of oxygen vacancies and Ti3+ defects in anatase TiO2 for efficient photocatalytic organic pollutant degradation10.1016/j.scitotenv.2020.141533 ↗
40. Production of titanium powder by metallothermic reduction of TiO2 in cold pressed pellets10.1007/s11771-021-4585-1 ↗
41. Degradation behavior of concrete under corrosive coal mine environment10.1016/j.ijmst.2018.12.001 ↗
42. Synthesis of novel ternary BiOCl/TiO2/clinoptilolite nanocomposites with highly-enhanced photocatalytic activity for the complete degradation of xanthates under visible light
43. Fabrication of europium-nitrogen co-doped TiO2/Sepiolite nanocompositesand its improved photocatalytic activity in real wastewater treatment10.1016/j.clay.2020.105791 ↗
44. Plasma-catalytic removal of formaldehyde over Cu-Ce catalysts in a dielectric barrier discharge reactor10.1016/j.apcatb.2015.01.032 ↗
45. Enhanced interfacial contact of dopamine bridged melamine-graphene/TiO2 nano-capsules for efficient photocatalytic degradation of gaseous formaldehyde10.1016/j.apcatb.2018.03.061 ↗