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Advanced Science

Advanced Science

IF: 14.3
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Two Birds With One Stone: A Novel Nanocomposite Combining Silicon Nanoparticles and Carbon‐Doped Titania as the Fluorescence Probe and Visible Light?…

Published:9 December 2024 DOI: 10.1002/advs.202410306 PMID: 39651852
Liyun Ma,?Zhi Li,?Yiyi Shi,?Yuchen Xie,?Ming Jiang,?Xu Yu,?Li Xu

Abstract

The monitoring and removal of environmental pollutants are vital for the sustainable development of society. Herein, a novel nanocomposite combining silicon nanoparticles and carbon-doped titania, C-TiO2/SiNPs, is designed as a fluorescence probe and visible-light photocatalyst to simultaneously monitor and degrade oxytetracycline (OTC). C-TiO2/SiNPs emit blue fluorescence, which can be quenched by OTC through inner filter effect. Meanwhile, green fluorescence is turned on upon OTC addition?by aggregation-induced emission. Thus, C-TiO2/SiNPs successfully act as a fluorescence colorimetric probe for quantitation and semi-quantitation of OTC. Additionally, C-TiO2/SiNPs show?adorable visible-light photocatalytic activity toward OTC, achieving a removal rate of 93.3% in 30?min. This process is driven by the superoxide radicals, holes and hydroxyl radicals produced by C-TiO2/SiNPs under visible light irradiation. The total toxicities obviously reduce after OTC is degraded by C-TiO2/SiNPs. The concentration during the OTC degradation can be estimated by naked eyes through the change of fluorescence color, but also precisely quantified by a fluorometer. This study innovatively develops a one-stone-two-birds strategy to achieve simultaneous degradation and in situ real-time detection of OTC, paving a promising paradigm for the highly efficient monitoring and removal of residual drugs.

Substances (21)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Isopropyl alcohol 67-63-0 C3H8O 1647 suppliers $7050.00
Ascorbic Acid 50-81-7 C6H8O6 1626 suppliers $6.00-$2170.00
Sodium bicarbonate 144-55-8 CHNaO3 1379 suppliers $10.00-$2070.00
Dimethyl sulfoxide 67-68-5 C2H6OS 1344 suppliers $15.00-$120900.00
Sodium chloride 7647-14-5 ClNa 1214 suppliers $5.00-$6678.62
Sodium hydroxide 1310-73-2 NaOH 1211 suppliers $14.00-$16472.00
Glutathione 70-18-8 C10H17N3O6S 1133 suppliers $6.00-$3420.00
D(+)-Glucose 50-99-7 C6H12O6 1115 suppliers $6.00-$26950.00
L-Tryptophan 73-22-3 C11H12N2O2 1110 suppliers $5.00-$8386.00
Trisodium phosphate 7601-54-9 Na3O4P 937 suppliers $10.00-$729.00

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