Synthesis of Sulfur-Doped Carbon Dots by Simple Heating Method

Rahmayanti, Handika Dany; Sulhadi,; Aji, Mahardika Prasetya

doi:10.4028/www.scientific.net/amr.1123.233

Cited by 10 publications

(9 citation statements)

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“…According to the FTIR result, synthesized C-Dots from mangosteen peel at 200°C shows band peaks at 3459, 3362 cm -1 that assign stretching OH (hydroxyl and carboxylate group), stretching N-H (amine group) [25,26]. The FTIR result also display sharp peaks at 1670, 1624, and 1456 cm -1 which correspond to stretching C=O (ketone group), stretching C=C, and deformation C-H (methyl group) for synthesized C-Dots at 200°C [13,27].…”

Section: Resultsmentioning

confidence: 99%

Facile synthesis of luminescent carbon dots from mangosteen peel by pyrolysis method

et al. 2017

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Carbon dots (C-Dots) from mangosteen peel has been synthesized by pyrolysis method. Synthesis of C-Dots is done using precursor solution which is prepared from extract of mangosteen peel as carbon source and urea as passivation agent. C-Dots is successfully formed with absorbance spectra at wavelength 350-550 nm. Urea affects to the formed C-Dots, while the absorbance and the luminescent spectra are independent toward urea. C-Dots from extract of mangosteen peel has size in range *2-15 nm. The absorbance peaks of C-Dots shows significant wavelength shift at visible region as the increasing of synthesized temperature. Shift of wavelength absorbance indicates the change of electronic transition of C-Dots. Meanwhile, the luminescent of C-Dots can be controlled by synthesized temperature as well. C-Dots luminescent were increasing as higher synthesized temperature. It was shown by the shift of wavelength emission into shorter wavelength, 465 nm at 200°C, 450 nm at 250°C, and 423 nm at 300°C. Synthesized temperature also affects size of C-Dots. It has size *10-15 nm at 200°C, *7-11 nm at 250°C and *2-4 nm at 300°C. In addition, temperature corresponds to the structure of carbon chains and C-N configuration of formed C-Dots from mangosteen peel extract.

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Section: Resultsmentioning

confidence: 99%

Facile synthesis of luminescent carbon dots from mangosteen peel by pyrolysis method

et al. 2017

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“…Maka dari itu, dilakukan sintesis CNDs menggunakan metode pemanasan terbantukan gelombang mikro. Metode ini menggunakan gelombang mikro yang memberikan energi yang intens, homogen, pemanasan yang efisien, dapat mencapai suhu yang tinggi, dan prosesnya menggunakan waktu yang singkat [8].…”

Section: Pendahuluanunclassified

Sintesis Carbon Nanodots dari Molase Menggunakan Metode Pemanasan Terbantukan Gelombang Mikro

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et al. 2022

equilibrium

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ABSTRAK. Carbon nanodots (CNDs) merupakan nanomaterial yang berukuran dibawah 10 nm. CNDs memiliki keunggulan diantaranya yaitu fotostabilitas tinggi, biokompatibilitas baik, toksisitas yang rendah, mudah dibuat, dan ramah lingkungan. Sumber karbon yang digunakan berasal dari molase karena murah dan mudah didapat serta merupakan hasil samping dari pengolahan tebu. Pada penelitian ini digunakan metode pemanasan terbantukan gelombang mikro atau Microwave Assisted Extraction (MAE) yang memberikan hasil suspensi yang homogen, pemanasan efisien, dan waktu yang singkat. Waktu iradiasi mempengaruhi energi gap CNDs dari molase yang dihasilkan. Waktu yang optimum untuk sintesis CNDs dari molase menggunakan metode MAE yaitu selama 3 menit. Efek fluoresensi telah diamati untuk suspensi CNDs yang mengubah warna kuning menjadi warna biru dibawah sinar UV 366 nm. Karakterisasi menggunakan spektrofotometri UV-Vis menunjukan serapan maksimum CNDs dari molase pada panjang gelombang 255 nm dengan energi gap sebesar 4,55 eV.Kata kunci:carbon nanodots, microwave, molase ABSTRACT. Carbon nanodots (CNDs) are nanomaterials with a size below 10 nm. CNDs have advantages such as high photostability, good biocompatibility, low toxicity, easy to manufacture, and environmentally friendly. The carbon source used comes from molasses because it is cheap and easy to obtain and is a by-product of sugarcane processing. In this study, the Microwave Assisted Extraction (MAE) method was used which gave homogeneous suspension results, efficient heating, and short time. The irradiation time affects the energy gap of the CNDs of the molasses produced. The optimum time for the synthesis of CNDs from molasses using the MAE method is 3 minutes. Fluorescence effects have been observed for suspensions of CNDs which turn yellow to blue under 366 nm UV light. Characterization using UV-Vis spectrophotometry showed the maximum absorption of CNDs from molasses at a wavelength of 255 nm with an energy gap of 4.55 eV.Keywords:carbon nanodots, microwave, molasses

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“…Later, Rahmayanti et al (2015) produced yellowish green emission based S-doped CQDs by simple heating process of sulphur deposits, citric acid and urea [102]. Lately, Yang et al (2017) fabricated S-doped CQDs and their derivatives-referred to as three-dimensional (3D) carbon nanoflowers; S-CNFs-with emission/QYs of blue/4% and green/6.4%, respectively, by using a simple heating process (10 and 30 min at 200 • C) of 5-sulfosalicylic acid dihydrate and diethylene glycol [103].…”

Section: S-doped Cqdsmentioning

confidence: 99%

Recent Advancements in Doped/Co-Doped Carbon Quantum Dots for Multi-Potential Applications

Kandasamy

2019

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Carbon quantum dots (CQDs)/carbon nanodots are a new class of fluorescent carbon nanomaterials having an approximate size in the range of 2–10 nm. The majority of the reported review articles have discussed about the development of the CQDs (via simple and cost-effective synthesis methods) for use in bio-imaging and chemical-/biological-sensing applications. However, there is a severe lack of consolidated studies on the recently developed CQDs (especially doped/co-doped) that are utilized in different areas of application. Hence, in this review, we have extensively discussed about the recent development in doped and co-doped CQDs (using elements/heteroatoms—e.g., boron (B), fluorine (F), nitrogen (N), sulphur (S), and phosphorous (P)), along with their synthesis method, reaction conditions, and/or quantum yield (QY), and their emerging multi-potential applications including electrical/electronics (such as light emitting diode (LED) and solar cells), fluorescent ink for anti-counterfeiting, optical sensors (for detection of metal ions, drugs, and pesticides/fungicides), gene delivery, and temperature probing.

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Synthesis of Sulfur-Doped Carbon Dots by Simple Heating Method

Cited by 10 publications

References 9 publications

Facile synthesis of luminescent carbon dots from mangosteen peel by pyrolysis method

Facile synthesis of luminescent carbon dots from mangosteen peel by pyrolysis method

Sintesis Carbon Nanodots dari Molase Menggunakan Metode Pemanasan Terbantukan Gelombang Mikro

Recent Advancements in Doped/Co-Doped Carbon Quantum Dots for Multi-Potential Applications

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