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Micro-mesoporous TiO2/SiO2 nanocomposites: Sol-gel synthesis, characterization, and enhanced photodegradation of quinoline by Jesus, M.A.M.L. (author);Ferreira, A.M. (author);Lima, L.F.S. (author);Batista, G.F. (author);Mambrini, R.V. (author);Mohallem, N.D.S. (author) is a Materials Science article available to read on EtoBox.
What is Micro-mesoporous TiO2/SiO2 nanocomposites: Sol-gel synthesis, characterization, and enhanced photodegradation of quinoline about?
Micro-mesoporous TiO 2 /SiO 2 nanocomposite powders have been successfully synthesized by the sol-gel process with different TiO 2 /SiO 2 molar ratios and were applied in the UV-photodegradation of quinoline (λ = 254 nm). The structural, morphological, and textural characterization of the powders showed a homogeneous distribution of TiO2 nanoparticles within a porous amorphous SiO2 matrix. Due to the micro-mesoporous character of the materials, their textural characteristics were evaluated by the N2 adsorption method, by comparing BET, DR, Langmuir, and DFT theories. Si 60 Ti 40 powders (60%SiO 2 /40%TiO 2 ) presented the highest specific surface area (SSA) obtained from BET (SSA = 363 m 2 g -1 ), DR (SSA = 482 m 2 g -1 ), and Langmuir (SSA = 492 m 2 g -1 ) due to the adequate particle size of TiO 2 and its high dispersion in the porous matrix. A higher degradation of quinoline in the presence of H 2 O 2 (66%) was achieved using Si 80 Ti 20 powders (80%SiO 2 /20%TiO 2 ), as compared to pure solgel TiO 2 powders, (51%) under the same reaction conditions (1 UVC lamp -250W, t = 180 min). The better performance of the Si 80 Ti 20 nanocomposite could be attributed to the small TiO 2 ana
Who reads Micro-mesoporous TiO2/SiO2 nanocomposites: Sol-gel synthesis, characterization, and enhanced photodegradation of quinoline?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Jesus, M.A.M.L. (author);Ferreira, A.M. (author);Lima, L.F.S. (author);Batista, G.F. (author);Mambrini, R.V. (author);Mohallem, N.D.S. (author)
- Publisher
- Elsevier BV
- Published
- 2021
- Language
- EN
- Field
- Materials Science (Physical Sciences)