scholarly journals Efficient Continuous Hydrothermal Flow Synthesis of Carbon Quantum Dots from a Targeted Biomass Precursor for On–Off Metal Ions Nanosensing

2021 ◽  
Vol 9 (6) ◽  
pp. 2559-2569 ◽  
Author(s):  
Ioan-Alexandru Baragau ◽  
Nicholas P. Power ◽  
David J. Morgan ◽  
Richard A. Lobo ◽  
Christopher S. Roberts ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Metal Ions ◽  
Carbon Quantum Dots ◽  
Flow Synthesis ◽  
Hydrothermal Flow

scholarly journals Continuous hydrothermal flow synthesis of blue-luminescent, excitation-independent nitrogen-doped carbon quantum dots as nanosensors

2020 ◽  
Vol 8 (6) ◽  
pp. 3270-3279 ◽  
Author(s):  
Ioan-Alexandru Baragau ◽  
Nicholas P. Power ◽  
David J. Morgan ◽  
Tobias Heil ◽  
Richard Alvarez Lobo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
High Selectivity ◽  
Carbon Quantum Dots ◽  
Environmental Applications ◽  
Flow Synthesis ◽  
First Report ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Hydrothermal Flow

We present the first report of continuous hydrothermal flow synthesis of N-doped carbon quantum dots, with excitation-independent optical properties. They display high selectivity and sensitivity for Cr(vi), and are thus suitable for environmental applications and beyond.

scholarly journals Continuous hydrothermal flow synthesis of S-functionalised carbon quantum dots for enhanced oil recovery

2021 ◽  
Vol 405 ◽  
pp. 126631 ◽  
Author(s):  
Ioan-Alexandru Baragau ◽  
Zhen Lu ◽  
Nicholas P. Power ◽  
David J. Morgan ◽  
James Bowen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Carbon Quantum Dots ◽  
Flow Synthesis ◽  
Hydrothermal Flow

scholarly journals Rapid synthesis of graphene quantum dots using a continuous hydrothermal flow synthesis approach

RSC Advances ◽  
2017 ◽  
Vol 7 (24) ◽  
pp. 14716-14720 ◽  
Author(s):  
Suela Kellici ◽  
John Acord ◽  
Nicholas P. Power ◽  
David J. Morgan ◽  
Paolo Coppo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Environmentally Benign ◽  
Rapid Synthesis ◽  
Flow Synthesis ◽  
Benign Synthesis ◽  
Low Cytotoxicity ◽  
Green Fluorescent ◽  
Synthesis Approach ◽  
Hydrothermal Flow

A rapid and environmentally benign synthesis of green fluorescent graphene quantum dots (GQD) with low cytotoxicity via Continuous Hydrothermal Flow Synthesis (CHFS) aided by calix[4]arene tetrasulfonic acid (SCX4) as a particle size limiting agent.

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.

Green Carbon Dots for Metal Sensing

2019 ◽  
Vol 962 ◽  
pp. 36-40
Author(s):  
Lan Ching Sim ◽  
Jia Min Khor ◽  
Kah Hon Leong ◽  
Pichiah Saravanan
Keyword(s):  
Quantum Dots ◽  
Metal Ions ◽  
Hydrothermal Treatment ◽  
Carbon Dots ◽  
Carbon Quantum Dots ◽  
Quenching Effect ◽  
Different Types ◽  
Stock Solutions ◽  
Metal Sensing

In this work, carbon quantum dots (C-dots) was successfully synthesized by hydrothermal treatment using dried leaves as green precursor for metal sensing. The performance of C-dots when detecting metal ions in water will be evaluated by testing with different types of metal stock solutions. Quenching effect of fluorescence C-dots solution was observed in the presence of different metal ions. C-dots is more selective towards Fe3+ compared to other metal ions.

Sign in / Sign up

Export Citation Format

Share Document