Synthesis of bicrystalline TiO2 supported sepiolite fibers and their photocatalytic activity for degradation of gaseous formaldehyde
Source abstract
Abstract
Bicrystalline TiO2 supported acid activated sepiolite (TiO2/AAS) fibers have been successfully synthesized by a simple method at low temperature. The as-prepared TiO2/AAS composites were characterized by X-ray diffraction (XRD), nitrogen adsorption/desorption method, UV–vis diffuse reflectance spectrum (UV–vis DRS), scanning electron microscope (SEM), high-resolution transmission electron microscopy (HRTEM) and Fourier transform infrared (FT-IR) spectroscopy. The X-ray diffraction analysis indicates that the binary mixtures of anatase and rutile exist in the TiO2/AAS composites. The specific surface area of the TiO2/AAS composites is much larger than that of raw sepiolite and acid activated sepiolite (AAS) fibers. The photocatalytic activities of the TiO2/AAS composites were evaluated by the degradation of gaseous formaldehyde (a main indoor air pollutant) under UV light irradiation. The result indicates that the photocatalytic activity of the TiO2/AAS composites is excellent and superior to that of the TiO2/sepiolite (raw sepiolite) and pure TiO2. The high photocatalytic activity of the TiO2/AAS composites can be attributed to the anatase–rutile mixed phase and bimodal pore structure in the TiO2/AAS composites.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Pigment Synthesis and Properties · Clay minerals and soil interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (54)
Show source-provided references
1. Characterization and the photocatalytic activity of TiO2 immobilized hydrophobic montmorillonite photocatalysts: degradation of decabromodiphenyl ether (BDE 209)10.1016/j.cattod.2008.08.024 ↗
2. Photodegradation of formaldehyde by photocatalytic TiO2: effects on the presences of NO, SO2 and VOCs10.1016/j.apcatb.2004.06.004 ↗
3. Vanadium oxides supported on TiO2–sepiolite and sepiolite: preparation, structural and acid characterization and catalytic behavior in selective oxidation of toluene10.1016/j.apcata.2007.02.033 ↗
4. Synthesis, characterization and photocatalytic activity of TiO2 supported natural palygorskite microfibers10.1016/j.clay.2011.03.009 ↗
5. Photoinduced reactivity of titanium dioxide10.1016/j.progsolidstchem.2004.08.001 ↗
6. Adsorption of tetracycline on 2:1 layered non-swelling clay mineral illite10.1016/j.clay.2011.11.004 ↗
7. Optimization synthesis of carbon nanotubes–anatase TiO2 composite photocatalyst by response surface methodology for photocatalytic degradation of gaseous styrene10.1016/j.apcatb.2012.04.020 ↗
8. Preparation and photocatalytic performance of anatase-mounted natural porous silica, pumice, by hydrolysis under hydrothermal conditions10.1016/j.apcatb.2004.03.004 ↗
9. Sepiolite/calcium interactions in desiccant clay production10.1016/j.clay.2010.06.027 ↗
10. Meeting report: summary of IARC monographs on formaldehyde, 2-butoxyethanol and 1-tert-butoxy-2-propanol10.1289/ehp.7542 ↗
11. A review of adverse pregnancy outcomes and formaldehyde exposure in human and animal studies10.1006/rtph.2001.1486 ↗
12. Microfibrous chitosan–sepiolite nanocomposites10.1021/cm0523642 ↗
13. Influence of the nature titanium alkoxide and of the acid of hydrolysis in the preparation of titanium-pillared montmorillonites10.1016/S0022-3697(97)00006-1 ↗
14. Hybrid photocatalysts for the degradation of trichloroethylene in air10.1016/j.cattod.2009.02.001 ↗
15. Sources of formaldehyde, other aldehydes and terpenes in a new manufactured house10.1034/j.1600-0668.2002.01129.x ↗
16. Explaining the enhanced photocatalytic activity of Degussa P25 mixed-phase TiO2 using EPR10.1021/jp0273934 ↗
17. Control of microporosity of Al2O3-pillared clays: effect of pH, calcination temperature and clay cation exchange capacity10.1016/S1387-1811(98)00334-5 ↗
18. Water vapor adsorption and photocatalytic pollutant degradation with TiO2–sepiolite nanocomposites10.1016/j.clay.2010.12.012 ↗
19. Removal of formaldehyde by hydroxyapatite layer biomimetically deposited on polyamide film10.1021/es050098n ↗
20. Adsorption and photocatalytic oxidation of formaldehyde on a clay–TiO2 composite10.1016/j.jhazmat.2011.12.008 ↗
21. Recent advances in synthesis and applications of clay-based photocatalysts: a review10.1039/C3CP54146K ↗
22. The effect of activated carbon adsorption on the photocatalytic removal of formaldehyde10.1016/j.buildenv.2009.07.019 ↗
23. Synergism between rutile and anatase TiO2 particles in photocatalytic oxidation of naphthalene10.1016/S0926-860X(02)00610-5 ↗
24. Characterization and photocatalytic activity of TiO2 supported sepiolite catalysts10.1016/j.seppur.2008.03.011 ↗
25. Photocatalytic degradation of hydrocarbons by bentonite and TiO2 in aqueous suspensions containing surfactants10.1016/j.colsurfa.2003.09.023 ↗
26. Photocatalytic-based strategies for H2S elimination10.1016/j.cattod.2010.03.056 ↗
27. Investigation of solution chemistry effects on sorption behavior of Sr(II) on sepiolite fibers10.1016/j.molliq.2013.02.003 ↗
28. Photosynthetic production of H2 and H2O2 on semiconducting oxide grains in aqueous solutions10.1021/j100452a023 ↗
29. Photocatalytic efficiency variability in TiO2 particles10.1021/j100012a050 ↗
30. Interaction of pyridine derivatives with sepiolite10.1006/jcis.2002.8394 ↗
31. Influence of the preparation methods of TiO2 on the photocatalytic degradation of phenol in aqueous dispersion10.1021/j100365a058 ↗
32. Photocatalytic oxidation of heptane in the gas-phase over TiO210.1016/S0045-6535(01)00115-1 ↗
33. Selective oxidation of liquid hydrocarbons over photoirradiated TiO2 pillared clays10.1016/S0926-860X(01)00863-8 ↗
34. Study of thermally treated dickite by infrared and micro-raman spectroscopy using curve-fitting technique10.1023/A:1019954227093 ↗
35. Synthesis and properties of titanium oxide cross-linked montmorillonite10.1346/CCMN.1986.0340606 ↗
36. Variability of the surface properties of sepiolite10.1016/j.clay.2012.06.003 ↗
37. Pillaring of saponite with zirconium oligomers10.1016/S1387-1811(98)00158-9 ↗
38. Adsorption of a textile dye onto activated sepiolite10.1016/j.micromeso.2008.10.024 ↗
39. TiO2 supported on sepiolite: preparation, structural and thermal characterization and catalytic behaviour in photocatalytic treatment of phenol and lignin from olive mill wastewater10.1016/j.cej.2010.11.056 ↗
40. Novel anhydrous unfolded structure by heating of acid pre-treated sepiolite10.1016/j.clay.2006.10.005 ↗
41. Comparative FT-IR study of the removal of octahedral cations and structural modifications during acid treatment of several silicates10.1016/S0584-8539(96)01771-0 ↗
42. Core/shell nanocomposite based on the local polarization and its electrorheological behavior10.1021/la047261x ↗
43. Preparation, structure and thermomechanical properties of nylon-6 nanocomposites with lamella-type and fiber-type sepiolite10.1016/j.compscitech.2007.01.012 ↗
44. Photoactivity of titanium dioxide supported on MCM41, zeolite X and zeolite Y10.1021/jp962494l ↗
45. Photocatalytic degradation in aqueous solution using quantum-sized ZnO particles supported on sepiolite10.1016/j.jcis.2010.07.052 ↗
46. Optical, electrochemical and hydrophilic properties of Y2O3 doped TiO2 nanocomposite films10.1021/jp806820p ↗
47. Preparation and performances of a novel intelligent humidity control composite material10.1016/j.enbuild.2010.10.001 ↗
48. Development of TiO2 photocatalyst reaction for water purification10.1016/S1383-5866(02)00157-0 ↗
49. Characterization of Fe–TiO2 photocatalysts synthesized by hydrothermal method and their photocatalytic reactivity for photodegradation of XRG dye diluted in water10.1016/j.molcata.2004.01.008 ↗
50. Low-temperature synthesis and photocatalytic activity of TiO2 pillared montmorillonite10.1021/la702649v ↗
51. Synthesis and photocatalytic properties of highly stable and neutral TiO2/SiO2 hydrosol10.1016/j.jcis.2008.10.038 ↗
52. Properties of carbon and iron modified TiO2 photocatalyst synthesized at low temperature and photodegradation of acid orange 7 under visible light10.1016/j.apsusc.2010.02.012 ↗
53. Photocatalytic degradation of organic contaminants by TiO2/sepiolite composites prepared at low temperature10.1016/j.cej.2010.11.028 ↗
54. Cuprous oxide created on sepiolite: preparation, characterization, and photocatalytic activity in treatment of red water from 2,4,6-trinitrotoluene manufacturing10.1016/j.jhazmat.2011.12.053 ↗