Paper-based visual detection of silver ions and l-cysteine with a dual-emissive nanosystem of carbon quantum dots and gold nanoclusters

2018 ◽  
Vol 10 (32) ◽  
pp. 3945-3950 ◽  
Author(s):  
Bingyan Han ◽  
Ying Li ◽  
Xixi Hu ◽  
Qin Yan ◽  
Jingmei Jiang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visual Detection ◽  
Gold Nanoclusters ◽  
Silver Ions ◽  
Carbon Quantum Dots

The detection of silver ions and l-cysteine with a dual-emissive nanosystem of carbon quantum dots and gold nanoclusters.

Facile and visual detection of acetylcholinesterase inhibitors by carbon quantum dots

2019 ◽  
Vol 43 (25) ◽  
pp. 9924-9933 ◽  
Author(s):  
Reshma Reshma ◽  
Bhanushree Gupta ◽  
Rahul Sharma ◽  
Kallol K. Ghosh
Keyword(s):  
Quantum Dots ◽  
Food Safety ◽  
Environmental Protection ◽  
Rapid Detection ◽  
Visual Detection ◽  
Acetylcholinesterase Inhibitors ◽  
Carbon Quantum Dots

Sensitive and rapid detection of organophosphate toxicants is highly relevant and important in environmental protection and food safety.

scholarly journals Photosynthesis of Silver Nanoparticle – Carbon Quantum Dots Nanocomposites

2019 ◽  
Vol 16 (2) ◽  
pp. 118-124
Author(s):  
Xuan-Dung Mai ◽  
Quang-Trung Le ◽  
Lan-Anh Nguyen Thi ◽  
Phuong Nguyen Thi ◽  
Phuong Le Thi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Silver Ions ◽  
Carbon Quantum Dots ◽  
X Ray Diffraction ◽  
Ag Nps ◽  
Transmission Electron ◽  
Ir And Raman Spectroscopies ◽  
Surface Enhanced Raman ◽  
Potential Applications ◽  
Enhanced Raman Scattering

Nanocomposites (NCs) of silver nanoparticles (Ag NPs) and carbon quantum dots (CQDs) have been received increasing attention for diverse applications including sensing, photocatalyst, surface enhanced Raman scattering detection and antibacterial. Herein, we report a unique photosynthesis of Ag NPs-CQD using CQDs as photo-reducing agent. Highly luminescent CQDs were prepared by a hydrothermal method using a mixture of citric acid (CA) and ethylenediamine (EDA) as starting precursors. X-ray diffraction pattern (XRD), transmission electron microscope (TEM), infrared (IR) and Raman spectroscopies confirmed the formation of NCs. We have demonstrated that the formation of Ag NPs accompanied with the degradation of surface fluorophores, which responded for the resolved absorption peak at ca. 346 nm and high luminescence of pristine CQDs. The NCs showed excellent antibacterial affinity to Escherichia coli. The results provide new understandings on the interactions between CQDs and silver ions as well as potential applications of Ag NP – CQD nanocomposites.

Fluorescence and colorimetric dual-mode sensor for visual detection of malathion in cabbage based on carbon quantum dots and gold nanoparticles

2021 ◽  
Vol 343 ◽  
pp. 128494
Author(s):  
Nini Liang ◽  
Xuetao Hu ◽  
Wenting Li ◽  
Anjelina W. Mwakosya ◽  
Ziang Guo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Visual Detection ◽  
Carbon Quantum Dots ◽  
Dual Mode
Sign in / Sign up

Export Citation Format

Share Document