Porous carbon quantum dots: one step green synthesis vial-cysteine and applications in metal ion detection

RSC Advances ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 2039-2046 ◽  
Author(s):  
Deli Xiao ◽  
Renfeng Pan ◽  
Siqiao Li ◽  
Jia He ◽  
Man Qi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Porous Carbon ◽  
Metal Ion ◽  
Chemical Method ◽  
Carbon Quantum Dots ◽  
Effective Strategy ◽  
Wet Chemical Method ◽  
One Step ◽  
Wet Chemical ◽  
Metal Ion Detection

A bottom-up and wet-chemical method employing l-cysteine as a precursor has been proven to be an effective strategy for producing fluorescent porous CQDs.

scholarly journals Top-Down N-Doped Carbon Quantum Dots for Multiple Purposes: Heavy Metal Detection and Intracellular Fluorescence

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2249
Author(s):  
Francesca Limosani ◽  
Elvira Maria Bauer ◽  
Daniele Cecchetti ◽  
Stefano Biagioni ◽  
Viviana Orlando ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Metal Ion ◽  
Reaction Times ◽  
Size Control ◽  
Carbon Quantum Dots ◽  
Cell Nuclei ◽  
Top Down ◽  
Hek 293 ◽  
Metal Ion Detection ◽  
Intracellular Fluorescence

In the present study, we successfully synthesized N-doped carbon quantum dots (N-CQDs) using a top-down approach, i.e., hydroxyl radical opening of fullerene with hydrogen peroxide, in basic ambient using ammonia for two different reaction times. The ensuing characterization via dynamic light scattering, SEM, and IR spectroscopy revealed a size control that was dependent on the reaction time, as well as a more pronounced -NH2 functionalization. The N-CQDs were probed for metal ion detection in aqueous solutions and during bioimaging and displayed a Cr3+ and Cu2+ selectivity shift at a higher degree of -NH2 functionalization, as well as HEK-293 cell nuclei marking.

Optical properties and energy transfer processes in Tb3+-doped ZnSe quantum dots

2021 ◽  
Author(s):  
Nguyen Ca ◽  
N. D Vinh ◽  
Phan Van Do ◽  
N. T. Hien ◽  
Xuan Hoa Vu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Quantum Dots ◽  
Chemical Method ◽  
X Ray Diffraction ◽  
Wet Chemical Method ◽  
X Ray ◽  
Transfer Processes ◽  
Transmission Electron ◽  
Wet Chemical

Tb3+-doped ZnSe quantum dots (QDs) with Tb content in the range of 0.5 - 7% were successfully synthesized by a wet chemical method. X-ray diffraction (XRD) and transmission electron microscopy...

Low temperature regulated growth of PbS quantum dots by wet chemical method

2015 ◽  
Author(s):  
Hitanshu Kumar ◽  
Umesh Chandra Bind ◽  
P. B. Barman ◽  
Ragini Raj Singh
Keyword(s):  
Quantum Dots ◽  
Low Temperature ◽  
Chemical Method ◽  
Wet Chemical Method ◽  
Wet Chemical ◽  
Pbs Quantum Dots

scholarly journals Ultrafine Au Nanowires Synthesized via One-Step Wet Chemical Method

2015 ◽  
Vol 31 (6) ◽  
pp. 1186-1190
Author(s):  
XU Hai-Ying ◽  
◽  
KAN Cai-Xia ◽  
WANG Chang-Shun ◽  
NI Yuan ◽  
...  
Keyword(s):  
Chemical Method ◽  
Wet Chemical Method ◽  
One Step ◽  
Wet Chemical ◽  
Au Nanowires

scholarly journals Construction of cost-effective bimetallic nanoparticles on titanium carbides as a superb catalyst for promoting hydrolysis of ammonia borane

RSC Advances ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 843-847 ◽  
Author(s):  
Zhangwei Guo ◽  
Tong Liu ◽  
Qingtao Wang ◽  
Guanhui Gao
Keyword(s):  
Chemical Method ◽  
Bimetallic Nanoparticles ◽  
Cost Effective ◽  
Ammonia Borane ◽  
Wet Chemical Method ◽  
One Step ◽  
Wet Chemical ◽  
Titanium Carbides ◽  
Hydrolysis Of

Bimetallic cost-effective CoNi nanoparticles are supported on MXene by a simple one-step wet-chemical method. The Co0.7Ni0.3/MXene shows the best performance toward catalyzing AB decomposition with TOF of 87.6 molH2molcat−1min−1at 50 °C.

One-step synthesis of maghemite (γ-Fe2O3) nano-particles by wet chemical method

2010 ◽  
Vol 502 (1) ◽  
pp. 257-260 ◽  
Author(s):  
Esmaeel Darezereshki ◽  
Mohammad Ranjbar ◽  
Fereshteh Bakhtiari
Keyword(s):  
Chemical Method ◽  
Nano Particles ◽  
Wet Chemical Method ◽  
One Step ◽  
Wet Chemical

New insights on the energy transfer mechanisms of Eu-doped CdS quantum dots

2020 ◽  
Vol 22 (11) ◽  
pp. 6266-6274 ◽  
Author(s):  
P. M. Tan ◽  
N. X. Ca ◽  
N. T. Hien ◽  
H. T. Van ◽  
P. V. Do ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Chemical Method ◽  
Dopant Concentration ◽  
Cds Quantum Dots ◽  
Wet Chemical Method ◽  
Zinc Blende ◽  
Wet Chemical ◽  
Transfer Mechanisms ◽  
Zinc Blende Structure ◽  
The Eu

Eu-doped CdS quantum dots with the Eu dopant concentration in the range of 0.5–10% and zinc blende structure were successfully synthesized by a wet chemical method in the noncoordinating solvent.

scholarly journals An Overview of the Recent Developments in Carbon Quantum Dots—Promising Nanomaterials for Metal Ion Detection and (Bio)Molecule Sensing

Chemosensors ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 138
Author(s):  
Silvija Šafranko ◽  
Dominik Goman ◽  
Anamarija Stanković ◽  
Martina Medvidović-Kosanović ◽  
Tihomir Moslavac ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Dots ◽  
Metal Ion ◽  
Water Solubility ◽  
Wide Spectrum ◽  
Low Cost ◽  
Chemical Species ◽  
Carbon Quantum Dots ◽  
Recent Developments ◽  
Metal Ion Detection

The fluorescent carbon quantum dots (CQDs) represent an emerging subset of carbonaceous nanomaterials, recently becoming a powerful tool for biosensing, bioimaging, and drug and gene delivery. In general, carbon dots are defined as zero-dimensional (0D), spherical-like nanoparticles with <10 nm in size. Their unique chemical, optical, and electronic properties make CQDs versatile materials for a wide spectrum of applications, mainly for the sensing and biomedical purposes. Due to their good biocompatibility, water solubility, and relatively facile modification, these novel materials have attracted tremendous interest in recent years, which is especially important for nanotechnology and nanoscience expertise. The preparation of the biomass-derived CQDs has attracted growing interest recently due to their low-cost, renewable, and green biomass resources, presenting also the variability of possible modification for the enhancement of CQDs’ properties. This review is primarily focused on the recent developments in carbon dots and their application in the sensing of different chemical species within the last five years. Furthermore, special emphasis has been made regarding the green approaches for obtaining CQDs and nanomaterial characterization toward better understanding the mechanisms of photoluminescent behavior and sensing performance. In addition, some of the challenges and future outlooks in CQDs research have been briefly outlined.

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