Mesoporous CdTe supported SiO2-TiO2 nanocomposite: Structural, optical, and photocatalytic applications
Source abstract
Abstract
Owing to polluted water remediation, semiconductor nano photocatalysis has been considered a promising methodology. However, low reaction rates and high electron-hole recombination have impeded their large-scale applications. Therefore, heterogeneous nano photocatalysts are required for promoting their functional applications. Here, sol-gel-based mesoporous titania nanoparticles (TNPs) and silica-titania nanocomposite (STNC) are synthesized and supported with CdTe (CdTe/STNC) for photocatalytic applications. Vapor pressure scanning electron microscopy (VPSEM) exhibited the porous and colonial nanostructure of CdTe supported STNC catalyst. The high-resolution transmission electron microscopy (HRTEM) possessed a spherical morphology with particle size 5.6 nm of TNPs, 2.6 nm of STNC, and 2.1 nm of CdTe/STNC. Moreover, the CdTe/STNC catalyst exhibited a large surface area (SBET) ∼ 410 m2/g and pore size distribution ∼ 1.8 nm. The CdTe/STNC exhibited high photocatalytic activity with methylene blue degradation of 95% (k = 0.01 min−1) after 180 min of ultraviolet radiation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
Show source-provided references
1. Fabrication and photophysical studies of CdTe quantum-dots dispersed in SiO2 sonogel optical-glasses10.1016/j.jart.2015.10.013 ↗
2. Ecotechnological strategies in the development of alternative photocatalysts10.1016/j.cogsc.2017.06.001 ↗
3. Iron oxide nanocatalyst with titanium and silver nanoparticles: synthesis, characterization, and photocatalytic activity on the degradation of Rhodamine B dye10.1038/s41598-020-59987-0 ↗
4. Titania coated silica nanocomposite prepared via encapsulation method for the degradation of Safranin-O dye from aqueous solution: optimization using statistical design10.1016/j.wri.2016.08.001 ↗
5. Synthesis and characterization of nanozeolite from (agro)industrial waste for application in heterogeneous photocatalysis10.1007/s11356-021-15815-0 ↗
6. Synthesis CeO2 nanoparticle catalysis of methyleneblue photodegradation: kinetics and Mechnism10.1016/S1872-2067(10)60121-0 ↗
7. Foundry sands as supports for heterogeneous photocatalysts10.1007/s11270-016-3063-0 ↗
8. Preparation, characterization, and photocatalytic activity of activated charcoal from microalgae for photocatalytic degradation of rhodamine B dye10.1590/0366-69132020663802937 ↗
9. Mesoporous zinc oxide supported silica-titania nanocomposite:structural, optical, and photocatalytic activity10.1016/j.jallcom.2021.160582 ↗
10. CdTe quantum dots encapsulated ZnO nanorods for highly efficient photoelectrochemical degradation of phenols10.1021/jp410692y ↗
11. CdTe quantum dot-functionalized P25 titania composite with enhanced photocatalytic NO2 storage selectivity under UV and VIS irradiation10.1021/acsami.8b18036 ↗
12. Heating influence on atomic site structural changes of Mesoporous Au supported Anatase nanocomposite for photocatalytic progression10.1007/s10971-022-05892-z ↗
13. Foundry sands as supports for heterogeneous photocatalysts10.1007/s11270-016-3063-0 ↗
14. Structural and optical properties of CdTe + CdTeO3 nanocomposite films with broad blueish photoluminescence
15. Improvement of hollow mesoporous silica nanoparticles synthesis by hardtemplating method via CTAB surfactant10.1016/j.ceramint.2019.03.125 ↗
16. Sol–gel based optically active phenolphthalein encapsulated nanomatrices for sensing application10.1007/s10971-016-4041-0 ↗
17. Mesoporous SiO2-modified nanocrystalline TiO2 with high anatase thermal stability and large surface area as efficient photocatalyst10.1021/jp807552u ↗
18. Titania coated silica nanocompositeprepared via encapsulation method for the degradation of Safranin-O dye fromaqueous solution: optimization using statistical design10.1016/j.wri.2016.08.001 ↗
19. Thermally stable and fast responsive mesoporous cresol red functionalized silica and titania nanomatrices: fiber optic pH sensors10.1007/s10971-021-05604-z ↗
20. A Simple Synthesis, characterization, and properties of poly (methyl methacrylate) grafted CdTe nanocrystals10.1080/15421406.2015.1076305 ↗
21. Fabrication of silica-titania as consolidant and self-cleaning for the conservation of andesite stone
22. Wypych, A., Bobowska, I., Tracz, M., Opasinska, A., Kadlubowski, S., Krzywania Kaliszewska, A., Grobelny, J., Wojciechowski, P. Dielectric properties and characterisation of titanium dioxide obtained by different chemistry methods, < / 2014 / Article ID 124814.10.1155/2014/124814 ↗
23. Synthesis, characterization, and photocatalytic properties of core/shell mesoporous silica nanospheres supporting nanocrystalline titania10.1007/s11051-011-0307-1 ↗
24. Transparent anti-fogging and self-cleaning TiO2/SiO2 thin films on polymer substrates using atmospheric plasma
25. Room temperature two-step synthesis of cadmiumtelluride films
26. Comparison of rhodamine B degradation under UV irradiation by two phases of Titania
27. Effect of pH on phenolphthalein immobilized gold nanoparticles/nanostructures for pH sensing evaluations: sol–gel method10.1007/s10971-021-05570-6 ↗
28. Chapter2 Synthesis and optical characterization of CdS and Sm3+/Tb3+/CdS doped titania-zirconia hosts.
29. Introducing nanoscaled surface morphology and percolation barrier network into mesoporous silica coatings10.1039/C5RA09357K ↗
30. Sol–gel-based phenolphthalein encapsulated heterogeneous silica–titania optochemical pH nanosensor10.1016/j.jiec.2015.11.022 ↗
31. Martínez, A., Cuesta-Soto, F., García, J., Martí, J., Sochinskii, N.V., Abellan, M., Rodríguez-Fernández, J., Mengali, S., Mercuri, A., Corsi, C., Reid, I., Robertson, M., Neretina, S., Hughes, R.A., Wojcik, J., Preston, J.S., Mascher, P. Cadmium telluride: a silicon-compatible optical material as an alternative technology for building all-optical photonic devices, Proc. SPIE Vol. 6996 699608-1-12.10.1117/12.781413 ↗
32. Fanglin Du fabrication of CdTe QDs/BiOI-promoted TiO2 hollow microspheres with superior photocatalytic performance under simulated sunlight10.1186/s11671-019-2878-1 ↗
33. Synthesis of CdTe/TiO2 nanoparticles and their photocatalytic activity10.1016/j.materresbull.2013.06.052 ↗
34. Farhan, M.A., Mahmoud, Z.H., Falih, M.S. Synthesis and characterization of TiO2/Au nanocomposite using UV-irradiation method and its photocatalytic activity to degradation of methylene blue, Synth. Charact. TiO2/Au Nanocomposite Using UV-Irradiation Method, 30(5): (2018) 1143.10.14233/ajchem.2018.21256 ↗
35. Controlled synthesis of reduced graphene oxide supported magnetically separable Fe3O4@rGO@AgI ternary nanocomposite for enhanced photocatalytic degradation of phenol10.1016/j.powtec.2019.08.026 ↗
36. Au/TiO2 reusable photocatalysts for dye degradation10.1155/2013/752605 ↗
37. Photocatalytic performance of graphene/TiO2-Ag composites on amaranth dye degradation10.1016/j.matchemphys.2016.05.035 ↗
38. Titania nanotube arrayssurface modified with ZnO for enhanced photocatalytic applications10.1016/j.materresbull.2016.01.020 ↗
39. Flexible and porous TiO2/SiO2/carbon composite electrospun nanofiber mat with enhanced interfacial charge separation for photocatalytic degradation of organic pollutants in water10.1016/j.jcis.2019.06.019 ↗
40. Photocatalytic degradation of methylene blue by Fe/ZnO/SiO2 nanoparticles under visible light10.1155/2012/329082 ↗
41. Ultrasonic-assisted synthesis of visible-light-driven TiO2/Bi2O3 nanocomposite photocatalysts: characterization, properties and azo dye removal application10.1007/s11164-014-1836-x ↗
42. A novel visible-light Nd-doped CdTe photocatalyst for degradation of Reactive Red 43: synthesis, characterization, and photocatalytic properties10.1016/S1002-0721(14)60576-7 ↗
43. Fabrication of CdTe QDs/BiOI-promoted TiO2 hollow microspheres with superior photocatalytic performance under simulated sunlight10.1186/s11671-019-2878-1 ↗
44. Fast removal of methylene blue via adsorption-photodegradation on TiO2/SBA-15 synthesized by slow calcination10.3390/ma15165471 ↗