Green Fluorescent Onion-Like Carbon Nanoparticles from Flaxseed Oil for Visible Light Induced Photocatalytic Applications and Label Free Detection of AI(III) Ions
- Authors
- Tripathi, Kumud Malika; Tuan Sang Tran; Kim, Yoon Jin; Kim, TaeYoung
- Issue Date
- May-2017
- Publisher
- AMER CHEMICAL SOC
- Keywords
- Carbon nanoonions; Green emissions; Enhanced photocatalysis; Fluorescence sensor; Sensing of Al(III)
- Citation
- ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v.5, no.5, pp.3982 - 3992
- Journal Title
- ACS SUSTAINABLE CHEMISTRY & ENGINEERING
- Volume
- 5
- Number
- 5
- Start Page
- 3982
- End Page
- 3992
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/6178
- DOI
- 10.1021/acssuschemeng.6b03182
- ISSN
- 2168-0485
- Abstract
- Onion-like carbon nanoparticles (CNOs) were synthesized via traditional pyrolysis of flaxseed oil. Oxidative treatment of as-synthesized carbon soot introduced numerous carboxyl ( COOH) functionalities, rendering them hydrophilic and stable in aqueous phase. The water-soluble onion-like carbon nanoparticles (wsCNOs) were 4-8 nm in size and exhibited stable green photoluminescence (PL) emission. CNOs were explored as efficient photocatalysts for the degradation of methylene blue (MB) as model organic pollutant dye under visible light irradiation. The wsCNOs exhibited photocatalytic efficiency similar to 9 times higher than CNOs for MB degradation. Enhanced photocatalytic efficiency of wsCNOs was attributed to their surface functionalities and nanostructure. The unique morphology (concentric nanographene shells) with considerable surface defects, increased the physisorption of MB on the wsCNOs surface and significantly enhanced the photocatalytic efficiency of wsCNOs. Furthermore, the wsCNOs enabled specific detection of AKIN), even with interference from high concentrations of other metal ions, with a detection limit of 0.77 mu M, which compares favorably to other reported fluorescent probe. Altogether, the wsCNOs showed a significantly enhanced photocatalytic activity and were used as highly selective fluorescent probes for Al(III) ion detection, suggesting a potential use in environmental wastewater treatment.
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