Bifunctional fluorescent carbon nanodots: green synthesis via soy milk and application as metal-free electrocatalysts for oxygen reduction

Abstract

We demonstrated a facile and green approach to synthesize bifunctional fluorescent carbon nanodots via soy milk, which not only showed favorable photoluminescent properties, but also exhibited good electrocatalytic activity towards oxygen reduction reaction.

From highly graphitic to amorphous carbon dots: A critical review

“…To that end, N-rich C-dots are prepared by post-synthesis doping via NH 3 , hydrazine, or N 2 treatments. Alternatively, the heteroatoms are incorporated to the nanoparticles directly from the starting materials; N-doped aC-dots are derived from soy milk 37 or plant soot. 47 The N-doped gC-dots derived electrolytically from graphite using tetrabutylammonium perchlorate in acetonitrile as the electrolyte 63 exhibit signifi cant electrocatalytic activity against the oxygen reduction reaction (ORR).…”

One-Step Microwave-Assisted Green Synthesis of Luminescent N-Doped Carbon Dots from Sesame Seeds for Selective Sensing of Fe(III)

“…C.dots akin to Q.dots show several interesting properties such as excitation-dependent emission, chemical and photostability, enhanced fluorescence quantum yields and the possibility of fine-tuning the sensing properties by surface modification [5][6][7][8][9][10][11] In order to improve the photophysical and photochemical properties of C.dots, hetero-atom doped C.dots are synthesized by different ways. Among them, nitrogendoped C.dots received much attention because of their good biocompatibility and the related broad applications in the areas of bio-imaging, electrocatalysis and sensors 25,26 . However, most of the synthesis methods reported so far have either a long reaction time or a need of extra chemicals for doping.…”

“…Among them, nitrogendoped C.dots received much attention because of their good biocompatibility and the related broad applications in the areas of bio-imaging, electrocatalysis and sensors 25,26 . However, most of the synthesis methods reported so far have either a long reaction time or a need of extra chemicals for doping.…”

Effect of pH conditions on the depolymerization of Wucaiwan coal by mixed acids/ultrasound method and the product structures and performance

“…The fluorescence property is basically the same as other typical luminescent carbon nanoparticles, depending on excitation wavelengths and having multiple excitation and multiple emission (Hana et al 2009;Zhu et al 2012;Liu et al 2012). In addition, upon exposure to the light of 365 nm wavelength from portable UV lamp, sample 1 0 exhibited blue-green fluorescence and the collected solution of samples 4 0 -8 0 exhibited blue fluorescence (inset in Fig.…”