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Multifunctional Nanohybrid of Palladium Nanoparticles Encapsulated by Carbon‐Dots for Exploiting Synergetic Applications
Author(s) -
Dhenadhayalan Namasivayam,
Hsin TzuHan,
Lin KingChuen
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201900361
Subject(s) - materials science , nanoparticle , catalysis , palladium , nanotechnology , fluorescence , quantum dot , detection limit , chemistry , organic chemistry , physics , quantum mechanics , chromatography
Palladium nanoparticles encapsulated in the carbon dots (Pd/C‐dots) are demonstrated to play a role of multifunctional nanohybrid in the synergetic applications of sensor and catalysis. The photochemical method is applied to synthesize Pd/C‐dots in which Pd nanoparticles (NPs) are dispersedly encapsulated by C‐dots layer. The nanohybrid can function as a fluorescent sensor and reductive catalyst, due to the inherent properties of C‐dots and Pd NPs, respectively. The Pd/C‐dots exhibit a highly selective and sensitive detection toward the nickel (Ni 2+ ) ion with a detection limit of 7.26 × 10 −9 m . Moreover, the Ni 2+ is detected in MCF‐7 live cells signifying the applicability of nanohybrid as a promising sensor. On the other hand, the Pd/C‐dots show an excellent catalytic performance in the reduction of 4‐nitrophenol and eosin yellow. A plausible mechanism for sensing and catalysis behavior is proposed. The sensor system is designed on the basis of the fluorescence turn‐on when Ni 2+ interacts with functional groups of the C‐dots layer. The activities of catalytic reduction are mainly governed by the Pd NPs and further enhanced when the C‐dots layer is incorporated. The Pd/C‐dots can serve as a new paradigm for opening a potential trend in the design of multifunctional materials to diverse applications.