Controllable and eco-friendly synthesis of P-riched carbon quantum dots and its application for copper (II) ion sensing

Yang, Fan; He, Xing; Wang, Chunxia; Cao, Yan; Li, Yun; Yan, Linan; Liu, Mengmeng; Lv, Mingzhu; Yang, Yanan; Zhao, Xu; Li, Yongfeng

doi:10.1016/j.apsusc.2018.03.246

Cited by 72 publications

(17 citation statements)

References 74 publications

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“…3, BCD contained functional groups at 3658, 3023, 1036, 930, 1614, 1020, 1708, 1267, 1230, and 1085 cm À1 , that signied to OH, CH benzene, COC, CO methoxy, C]C-C conjugated benzene, CB, CO carbonyl, OBO asymmetric, OBO deformation, and BOH respectively. [25][26][27][28][29] Moreover, naproxen-loaded BCD displayed predominantly the same groups as BCD with the addition at 3126 and 2826 cm À1 which identied as CH aliphatic and OCH 3 groups. 25,30 Further advanced evaluation of surface functional groups of the samples was convinced by an X-ray photoelectron spectrometer (XPS).…”

Section: Resultsmentioning

confidence: 93%

Naproxen release aspect from boron-doped carbon nanodots as a bifunctional agent in cancer therapy

et al. 2021

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Section: Resultsmentioning

confidence: 93%

Naproxen release aspect from boron-doped carbon nanodots as a bifunctional agent in cancer therapy

et al. 2021

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“…After doping with N atoms, CDs become n-type semiconductors. In the case where CDs act as n-type semiconductors, they may form substitution defects in sp 3 -bonded diamond thin films [ 23 ]. Hence, nitrogen and phosphorus co-doping would change the electronic characteristics of CDs, as well as control their physical and chemical properties, leading to higher QY.…”

Section: Introductionmentioning

confidence: 99%

Detection of Ferric Ions and Catecholamine Neurotransmitters via Highly Fluorescent Heteroatom Co-Doped Carbon Dots

Lee

Kim

et al. 2020

Sensors

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Carbon dots (CDs) demonstrate very poor fluorescence quantum yield (QY). In this study, with the help of a hydrothermal method, we combined CDs with nitrogen and phosphorus elements belonging to the VA group (in the periodic table) to form heteroatom co-doped CDs, i.e., nitrogen and phosphorus co-doped carbon dots (NPCDs). These displayed a significant improvement in the QY (up to 84%), which was as much as four times than that of CDs synthesized by the same method. The as-prepared NPCDs could be used as an “off-on” fluorescence detector for the rapid and effective sensing of ferric ions (Fe3+) and catecholamine neurotransmitters (CNs) such as dopamine (DA), adrenaline (AD), and noradrenaline (NAD). The fluorescence of NPCDs was “turned off” and the emission wavelength was slightly red-shifted upon increasing the Fe3+ concentration. However, when CNs were incorporated, the fluorescence of NPCDs was recovered in a short response time; this indicated that CN concentration could be monitored, relying on enhancing the fluorescence signal of NPCDs. As a result, NPCDs are considered as a potential fluorescent bi-sensor for Fe3+ and CN detection. Particularly, in this research, we selected DA as the representative neurotransmitter of the CN group along with Fe3+ to study the sensing system based on NPCDs. The results exhibited good linear ranges with a limit of detection (LOD) of 0.2 and 0.1 µM for Fe3+ and DA, respectively.

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“…The first signal corresponded to hydroxyl groups on the surface of the carbon material, and the second one most likely corresponded to the vibrations of carbonyl group C=O. FTIR spectroscopy also showed peaks at 1290 cm −1 , 1130 cm −1 , 1080 cm −1 , and 580 cm −1 corresponding to vibrations of the phosphate groups (P=O and P-O) [63][64][65]. Carbonated hydroxyapatite provided v3 vibrations of C-O in the high energy peak at 1460 cm −1 [66].…”

Section: Figure 2 Sem Images Of Prepared Carbon Materials (A-c) Carbon Materials After Ball Milling (D-f) and Supported Pd Nps On Correspmentioning

confidence: 96%

How to Make a Cocktail of Palladium Catalysts with Cola and Alcohol: Heteroatom Doping vs. Nanoscale Morphology of Carbon Supports

et al. 2021

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Sparkling drinks such as cola can be considered an affordable and inexpensive starting material consisting of carbohydrates and sulfur- and nitrogen-containing organic substances in phosphoric acid, which makes them an excellent precursor for the production of heteroatom-doped carbon materials. In this study, heteroatom-doped carbon materials were successfully prepared in a quick and simple manner using direct carbonization of regular cola and diet cola. The low content of carbon in diet cola allowed reaching a higher level of phosphorus in the prepared carbon material, as well as obtaining additional doping with nitrogen and sulfur due to the presence of sweeteners and caffeine. Effects of carbon support doping with phosphorus, nitrogen and sulfur, as well as of changes in textural properties by ball milling, on the catalytic activity of palladium catalysts were investigated in the Suzuki–Miyaura and Mizoroki–Heck reactions. Contributions of the heteroatom doping and specific surface area of the carbon supports to the increased activity of supported catalysts were discussed. Additionally, the possibility of these reactions to proceed in 40% potable ethanol was studied. Moreover, transformation of various palladium particles (complexes and nanoparticles) in the reaction medium was detected by mass spectrometry and transmission electron microscopy, which evidenced the formation of a cocktail of catalysts in a commercial 40% ethanol/water solution.

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Controllable and eco-friendly synthesis of P-riched carbon quantum dots and its application for copper (II) ion sensing

Cited by 72 publications

References 74 publications

Naproxen release aspect from boron-doped carbon nanodots as a bifunctional agent in cancer therapy

Naproxen release aspect from boron-doped carbon nanodots as a bifunctional agent in cancer therapy

Detection of Ferric Ions and Catecholamine Neurotransmitters via Highly Fluorescent Heteroatom Co-Doped Carbon Dots

How to Make a Cocktail of Palladium Catalysts with Cola and Alcohol: Heteroatom Doping vs. Nanoscale Morphology of Carbon Supports

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