Synthesis of Fluorescence Carbon Nanoparticles from Ascorbic Acid

Abstract

Carbon nanoparticles (C-dot) ABSTRAK Nanopartikel karbon (C-dot) merupakan material yang termasuk ke dalam kelas nanopartikel 0 dimensi yang bersifat fotoluminesen. C-dot dapat disintesis dari berbagai sumber asam-asam organik melalui metode

Synthesis of TiO₂/Carbon Nanoparticle (C-dot) Composites as Active Catalysts for Photodegradation of Persistent Organic Pollutant

“…It was also found that the higher the amounts of urea in the synthesis of C-dots, the higher the agglomeration of formed C-dots. However, similar to that reported by Sugiarti [10], emission intensity increased with the increased concentration of urea as a passivation agent in the reaction process. The photoluminescence from C-dots that have surface passivation is attributed to the presence of surface energy traps that become emissive upon stabilization [13].…”

“…The maximum fluorescence emission of C-dot was at the wavelength of 536.33 nm when it was excited at a wavelength of 405 nm ± 10. The recorded maximum emission spectrum was higher than reported by Sugiarti [10], where C-dot synthesized from ascorbic acid-urea 75% has a maximum emission at wavelength 500 nm when excited at a wavelength of 400 nm. This difference may be due to the influence of passivation agent concentration on C-dots in the reaction process.…”

“…C-dots are the analog of CQDs which has a similar structure with graphite and have various properties, such as their good solubility in water, cheap starting materials, efficient synthesis process, low toxicity, good photostability, and strong photoluminescence [9][10]. C-dots have strong luminescence property in the UV-tonear-infrared range [8].…”

Photoluminescence Properties of Poly (Ethylene Glycol) Passivated Carbon Dots from Cassava Peels

“…The characteristics of C-dots are not like nanodiamonds (Ding et al, 2014), C-dots are materials that belong to the class of 0dimensional nanoparticles that are photoluminescence (Sugiarti & Darmawan, 2015). C-dots below 10 nm have a framework of sp 2 hybridized carbon atoms, abundant oxygen residues (Fang et al, 2012) and the surface is coated with groups of oxygen, polymers, or other species (Bao et al, 2015;Smagulova et al, 2017;Strauss et al, 2014;Unnikrishnan et al, 2016).…”

The Effect of Poly (Ethylene Glycol) on the Photoluminescence Properties of Carbon Dots From Cassava Peels Synthesized by Hydrothermal Methods

“…C-dots are nanoparticles that emit light or fluoresce, are not toxic compared to similar alternatives such as quantum dots [2]. C-dots are materials belonging to the class of 0-dimensional nanoparticles that have photoluminescence (PL) properties [4] with a size below 10 nm, having an sp 2 hybridized carbon atom structure with abundant oxygen residues [5] and their surfaces coated with oxygen groups, polymer, or other species [6,7].…”