Synthesis of highly monodispersed teardrop-shaped core–shell SiO2/TiO2 nanoparticles and their photocatalytic activities
Source abstract
Abstract
Abstract In this study, teardrop-shaped SiO2/TiO2 nanoparticles (TST-NPs) with core–shell structure were fabricated from tetraethoxysilane (TEOS) and tetrabutyl titanate (TBT) by sol–gel method. And these nanoparticles were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and UV–vis spectroscopy. Photocatalytic activity of teardrop-shaped SiO2/TiO2 nanoparticles after calcination (CST-NPs) was studied towards degradation of methylene blue under sunlight irradiation. The result showed that CST-NPs possessed good photocatalytic activity. The photocatalytic mechanism was also studied by adding different capture agent. Results showed that addition of 0.003 M of I− decreased the degradation of MB more than same amount of Ag+, indicating that the photogenerated holes may play a more essential role than photoinjected electrons in the oxidation of MB.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Pigment Synthesis and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
Show source-provided references
1. Facile fabrication of snowman-like Janus particles with asymmetric fluorescent properties via seeded emulsion polymerization10.1007/s00396-013-3051-5 ↗
2. A snowman-like array of colloidal dimers for antireflecting surfaces10.1002/adma.200305617 ↗
3. A novel approach for preparation of micrometer-sized, monodisperse dimple and hemispherical polystyrene particles10.1021/la903309t ↗
4. Synthesis, characterization, and electrochemical properties of self-assembled leaf-like CuO nanostructures10.1007/s10008-010-1022-z ↗
5. Pearl shaped highly sensitive Mn3O4 nanocomposite interface for biosensor applications10.1016/j.bios.2014.06.013 ↗
6. Preparation of hemispherical polymer particles via phase separation induced by microsuspension polymerization10.1007/s00396-012-2625-y ↗
7. Magnetically separable Fe3O4@SiO2@TiO2-Ag microspheres with well-designed nanostructure and enhanced photocatalytic activity10.1016/j.jhazmat.2013.08.077 ↗
8. Uniform TiO2–SiO2 hollow nanospheres: synthesis, characterization and enhanced adsorption–photodegradation of azo dyes and phenol10.1016/j.apsusc.2014.03.136 ↗
9. A facile method to synthesize the photocatalytic TiO2/montmorillonite nanocomposites with enhanced photoactivity10.1016/j.apsusc.2014.05.085 ↗
10. A comparative study of different porous amorphous silica minerals supported TiO2 catalysts10.1016/j.apcata.2013.03.035 ↗
11. Singular effect of crystallite size on the charge carrier generation and photocatalytic activity of nano-TiO210.1016/j.apsusc.2014.06.071 ↗
12. Anisotropic crystal growth kinetics of anatase TiO2 nanoparticles synthesized in a nonaqueous medium10.1021/cm100469y ↗
13. Magnetic nanocomposite based on titania–silica/cobalt ferrite for photocatalytic degradation of methylene blue dye10.1016/j.ceramint.2013.06.012 ↗
14. Designed synthesis of SiO2/TiO2 core/shell structure as light scattering material for highly efficient dye-sensitized solar cells10.1021/am400441v ↗
15. Synthesis of raspberry-like SiO2–TiO2 nanoparticles toward antireflective and self-cleaning coatings10.1021/am401124j ↗
16. On the morphology and potential application of polydimethylsiloxane-silica-titania composites10.3144/expresspolymlett.2011.17 ↗
17. Synthesis, characterization and visible-light photocatalytic activity of TiO2–SiO2 composite modified with zinc porphyrins10.1007/s10971-012-2746-2 ↗
18. Fabrication of teardrop-shaped silica particles in polyelectrolyte diluted solution through in situ sol–gel process10.1007/s10971-011-2440-9 ↗
19. Synthesis, characterization, and optical properties of well-defined N-doped hollow silica/titania hybrid microspheres10.1021/la7019704 ↗
20. Enhancement of porosity of sodium silicate and titanium oxychloride based TiO2–SiO2 systems synthesized by sol–gel process and their photocatalytic activity10.1016/j.micromeso.2013.05.021 ↗
21. Synthesis of TiO2–SiO2/waterborne polyurethane hybrid with amino-siloxane terminated via a sol–gel process10.1016/j.matlet.2012.08.083 ↗
22. Enhanced reversible wettability conversion of micro-nano hierarchical TiO2/SiO2 composite films under UV irradiation10.1016/j.apsusc.2013.05.085 ↗
23. Enhanced visible light photocatalytic degradation of methylene blue by F-doped TiO210.1016/j.apsusc.2014.07.038 ↗
24. UV-driven microvalve based on a micro-nano TiO2/SiO2 composite surface for microscale flow control10.1088/0957-4484/25/12/125301 ↗
25. Fabrication of n-type CuInS2 modified TiO2 nanotube arrays heterostructure photoelectrode with enhanced photoelectrocatalytic properties10.1016/j.apcatb.2014.03.035 ↗
26. Evidence of antibacterial activity on titanium surfaces through nanotextures10.1016/j.apsusc.2014.04.155 ↗
27. Surface characterization of sputtered N:TiO2 thin films within a wide range of dopant concentration10.1016/j.ceramint.2014.02.097 ↗
28. Well-dispersed Pt nanocrystals on the heterostructured TiO2/SnO2 nanofibers and the enhanced photocatalytic properties10.1016/j.apsusc.2014.07.199 ↗
29. Synthesis and characterization of activated carbon-coated SiO2/TiO2-xCx nanoporous composites with high adsorption capability and visible light photocatalytic activity10.1016/j.matchemphys.2012.05.029 ↗
30. Ionic liquid-assisted hydrothermal synthesis of TiO2 nanoparticles and its application in photocatalysis10.1007/s10853-013-7654-5 ↗
31. Co-electrospinning fabrication and photocatalytic performance of TiO2/SiO2 core/sheath nanofibers with tunable sheath thickness10.1016/j.materresbull.2013.08.035 ↗
32. Mechanism and kinetics of H-acid degradation in TiO2/O3/UV process10.1002/cjce.21901 ↗
33. A novel route for the production of TiO2 photocatalysts with low energy gap, via Triton-X and oleic acid surfactants10.1016/j.apsusc.2014.06.086 ↗
34. Effects of experimental conditions and kinetics of photodegradation of methylene blue over TiO210.1007/s40242-013-3177-5 ↗
35. A type-II semiconductor (ZnO/CuS heterostructure) for visible light photocatalysis10.1039/C3TA15446G ↗