Strongly Fluorescent Carbon Quantum Dots from Biomass Tar as Highly Selective and Sensitive Probe for Fe3+ Detection

NANO ◽  
2018 ◽  
Vol 13 (04) ◽  
pp. 1850043 ◽  
Author(s):  
Haoran Yuan ◽  
Xian Zhang ◽  
Denian Li ◽  
Yong Chen
Keyword(s):  
Quantum Dots ◽  
Value Added ◽  
Biomass Gasification ◽  
Carbon Quantum Dots ◽  
Model Compounds ◽  
Strong Fluorescence ◽  
Ion Sensing ◽  
New Strategy ◽  
Biomass Tar ◽  
First Time

Nonhazardous and value-added utilization of biomass tar remains a great challenge in biomass gasification development. Herein, both model compounds and real biomass tar were for the first time tested as the carbon source for carbon quantum dots, where the resultants demonstrated excellent monodispersibility and strong fluorescence, quantum efficiency up to 53% and 43% were achieved. Moreover, the real tar-derived CQDs further revealed as a highly selective and sensitive probe for Fe[Formula: see text], indicating its great potential ion sensing. It is expected that this work would open up a new strategy for biomass tar valorization.

Green synthesis of fluorescent carbon quantum dots for the detection of mercury(ii) and glutathione

2018 ◽  
Vol 42 (8) ◽  
pp. 5814-5821 ◽  
Author(s):  
Daraksha Bano ◽  
Vijay Kumar ◽  
Vikas Kumar Singh ◽  
Syed Hadi Hasan
Keyword(s):  
Quantum Dots ◽  
Green Synthesis ◽  
Carbon Quantum Dots ◽  
First Time ◽  
Fluorescent Carbon

On–off–on detection of Hg2+ and GSH using green-synthesized CQDs from T. indica leaves for the first time.

Synthesis and characterization of highly luminescent N-doped carbon quantum dots for metal ion sensing

2018 ◽  
Vol 186 (1) ◽  
pp. 32-39 ◽  
Author(s):  
Sarita Devi ◽  
Amanjot Kaur ◽  
Sudipta Sarkar ◽  
Sujata Vohra ◽  
Sachin Tyagi
Keyword(s):  
Quantum Dots ◽  
Metal Ion ◽  
Carbon Quantum Dots ◽  
Synthesis And Characterization ◽  
Ion Sensing ◽  
Metal Ion Sensing

scholarly journals Fluorescent-Nitrogen-Doped Carbon Quantum Dots Derived from Citrus Lemon Juice: Green Synthesis, Mercury(II) Ion Sensing, and Live Cell Imaging

ACS Omega ◽  
2020 ◽  
Vol 5 (8) ◽  
pp. 3889-3898 ◽  
Author(s):  
Aschalew Tadesse ◽  
Mebrahtu Hagos ◽  
Dharmasoth RamaDevi ◽  
Kaloth Basavaiah ◽  
Neway Belachew
Keyword(s):  
Quantum Dots ◽  
Green Synthesis ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Carbon Quantum Dots ◽  
Lemon Juice ◽  
Live Cell ◽  
Nitrogen Doped ◽  
Ion Sensing ◽  
Nitrogen Doped Carbon

Carbon quantum dots/block copolymer ensembles for metal-ion sensing and bioimaging

2017 ◽  
Vol 5 (27) ◽  
pp. 5397-5402 ◽  
Author(s):  
T. Skaltsas ◽  
M. Goulielmaki ◽  
A. Pintzas ◽  
S. Pispas ◽  
N. Tagmatarchis
Keyword(s):  
Quantum Dots ◽  
Block Copolymer ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Metal Ion ◽  
Carbon Quantum Dots ◽  
Ion Sensing ◽  
Metal Ion Sensing

Carbon quantum dots/block copolymer/bovine serum albumin nanoensembles for metal ion sensing and bioimaging.

Green and One-Pot Synthesis of Mint Derived Carbon Quantum Dots for Metal Ion Sensing

2021 ◽  
pp. 81-94
Keyword(s):  
Quantum Dots ◽  
Ascorbic Acid ◽  
Metal Ions ◽  
Crystalline Structure ◽  
Metal Ion ◽  
Fluorescence Emission ◽  
Carbon Quantum Dots ◽  
Morphological Properties ◽  
Quenching Effect ◽  
Ion Sensing

A green and simple synthesis of carbon quantum dots (CQDs) was derived from dried mint leaves by hydrothermal method. Crystalline structure of the synthesized CQDs was characterized with X-ray diffraction (XRD) method. The morphological properties of the CQDs were investigated with transmission electron microscopy (TEM). The optical behaviors of the CQDs were examined with fourier transfom infrared spectrophotometer (FT-IR), ultraviolet visible (UV-Vis) and photoluminescence spectrophotometer techniques. Crystalline structure of the CQDs was found as amorphous in nature and the average diameter of the CDs was calculated as 8.13 nm from TEM study. According to the fluorescence emission spectra of the samples, synthesized CQDs was sensitive to mainly Ag(I), Cr(III) and Fe(III) ions. Especially, Ag(I) was the most sensible compared to other metal ions. Quenching effect of the CQDs was also evaluated by using ascorbic acid to metal ions added CQDs samples. Ascorbic acid showed the quenching effect for all the metal ion added samples except Sn(II) ion.

Template-free synthesis of oxygen-containing ultrathin porous carbon quantum dots/g-C3N4 with superior photocatalytic activity for PPCPs remediation

2019 ◽  
Vol 6 (8) ◽  
pp. 2565-2576 ◽  
Author(s):  
Fengliang Wang ◽  
Yingfei Wang ◽  
Yuliang Wu ◽  
Dandan Wei ◽  
Lei Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Porous Carbon ◽  
Carbon Quantum Dots ◽  
Metal Free ◽  
Template Free ◽  
Polymeric Carbon ◽  
First Time

We report, for the first time, the fabrication of an oxygen-containing ultrathin porous carbon quantum dots/polymeric carbon nitrogen metal-free composite with a highly enhanced photoresponse.

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