دورية أكاديمية
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Development and Upscaling of SiO 2 @TiO 2 Core-Shell Nanoparticles for Methylene Blue Removal.

التفاصيل البيبلوغرافية
العنوان: Development and Upscaling of SiO 2 @TiO 2 Core-Shell Nanoparticles for Methylene Blue Removal.
المؤلفون: Gomes BR; CeNTItvc-Centre for Nanotechnology and Smart Materials, Vila Nova de Famalicão 4760-034, Portugal., Lopes JL; CeNTItvc-Centre for Nanotechnology and Smart Materials, Vila Nova de Famalicão 4760-034, Portugal., Coelho L; CeNTItvc-Centre for Nanotechnology and Smart Materials, Vila Nova de Famalicão 4760-034, Portugal., Ligonzo M; Dipartimento di Chimica, Università degli Studi di Torino (UNITO), Via Pietro Giuria 7, 10124 Torino, Italy., Rigoletto M; Dipartimento di Chimica, Università degli Studi di Torino (UNITO), Via Pietro Giuria 7, 10124 Torino, Italy., Magnacca G; Dipartimento di Chimica, Università degli Studi di Torino (UNITO), Via Pietro Giuria 7, 10124 Torino, Italy.; NIS Interdepartmental Centre, Università degli Studi di Torino, Via Pietro Giuria 7, 10124 Torino, Italy., Deganello F; Consiglio Nazionale delle Ricerche (CNR) Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), Via Ugo La Malfa 153, 90146 Palermo, Italy.
المصدر: Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2023 Aug 08; Vol. 13 (16). Date of Electronic Publication: 2023 Aug 08.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: MDPI AG Country of Publication: Switzerland NLM ID: 101610216 Publication Model: Electronic Cited Medium: Print ISSN: 2079-4991 (Print) Linking ISSN: 20794991 NLM ISO Abbreviation: Nanomaterials (Basel) Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Basel, Switzerland : MDPI AG, [2011]-
مستخلص: SiO 2 @TiO 2 core-shell nanoparticles were successfully synthesized via a simple, reproducible, and low-cost method and tested for methylene blue adsorption and UV photodegradation, with a view to their application in wastewater treatment. The monodisperse SiO 2 core was obtained by the classical Stöber method and then coated with a thin layer of TiO 2 , followed by calcination or hydrothermal treatments. The properties of SiO 2 @TiO 2 core-shell NPs resulted from the synergy between the photocatalytic properties of TiO 2 and the adsorptive properties of SiO 2 . The synthesized NPs were characterized using FT-IR spectroscopy, HR-TEM, FE-SEM, and EDS. Zeta potential, specific surface area, and porosity were also determined. The results show that the synthesized SiO 2 @TiO 2 NPs that are hydrothermally treated have similar behaviors and properties regardless of the hydrothermal treatment type and synthesis scale and better performance compared to the SiO 2 @TiO 2 calcined and TiO 2 reference samples. The generation of reactive species was determined by EPR, and the photocatalytic activity was evaluated by the methylene blue (MB) removal in aqueous solution under UV light. Hydrothermally treated SiO 2 @TiO 2 showed the highest adsorption capacity and photocatalytic removal of almost 100% of MB after 15 min in UV light, 55 and 89% higher compared to SiO 2 and TiO 2 reference samples, respectively, while the SiO 2 @TiO 2 calcined sample showed 80%. It was also observed that the SiO 2 -containing samples showed a considerable adsorption capacity compared to the TiO 2 reference sample, which improved the MB removal. These results demonstrate the efficient synergy effect between SiO 2 and TiO 2 , which enhances both the adsorption and photocatalytic properties of the nanomaterial. A possible photocatalytic mechanism was also proposed. Also noteworthy is that the performance of the upscaled HT1 sample was similar to one of the lab-scale synthesized samples, demonstrating the potentiality of this synthesis methodology in producing candidate nanomaterials for the removal of contaminants from wastewater.
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معلومات مُعتمدة: 869178-AquaticPollutants European Union's Horizon 2020
فهرسة مساهمة: Keywords: SiO2@TiO2; core-shell; dye adsorption; dye removal; photocatalysis; upscaling; water treatments
تواريخ الأحداث: Date Created: 20230826 Latest Revision: 20230828
رمز التحديث: 20230828
مُعرف محوري في PubMed: PMC10458987
DOI: 10.3390/nano13162276
PMID: 37630862
قاعدة البيانات: MEDLINE
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