Journal ArticleDOI
One-step green synthesized fluorescent carbon nanodots from bamboo leaves for copper(II) ion detection
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TLDR
In this article, a high quantum yield carbon quantum dots (CQDs) are successfully synthesized via a simple, low cost, and green hydrothermal method using bamboo leaves as carbon source for the first time.Abstract:
High quantum yield carbon quantum dots (CQDs) are successfully synthesized via a simple, low cost, and green hydrothermal method using bamboo leaves as carbon source for the first time. Branched polyethylenimine (BPEI)-capped CQDs (BPEI-CQDs) are prepared by coating the CQDs with BPEI via electrostatic adsorption. The BPEI-CQDs are then employed as fluorescent probes for sensitive and selective Cu 2+ detection. Experimental results show that the synthesized CQDs have average size of 3.6 nm in diameter with narrow size distribution. The biomass-based CQDs offer high quantum yield of 7.1%. The BPEI-CQDs-based sensing system renders a simple, reliable and sensitive Cu 2+ detection with limit of detection (LOD) as low as 115 nM and a dynamic range from 0.333 to 66.6 μM. In addition, the BPEI-CQDs are successfully used to detect Cu 2+ in river water, demonstrating its good selectivity and great potential for analysis of environmental water samples.read more
Citations
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Journal ArticleDOI
Sustainable carbon materials
Maria-Magdalena Titirici,Robin J. White,Nicolas Brun,Vitaliy L. Budarin,Dang Sheng Su,Francisco del Monte,James H. Clark,Mark J. MacLachlan +7 more
TL;DR: This review will introduce to the reader the most recent and important progress regarding the production of sustainable carbon materials, whilst also highlighting their application in important environmental and energy related fields.
Journal ArticleDOI
Review of Carbon and Graphene Quantum Dots for Sensing
TL;DR: The authors suggest that with the potential of these nanomaterials in sensing more research is needed on understanding their optical properties and why the synthetic methods influence their properties so much, into methods of surface functionalization that provide greater selectivity in sensing and into new sensing concepts that utilise the virtues of these nano-materials.
Journal ArticleDOI
Green Synthesis of Bifunctional Fluorescent Carbon Dots from Garlic for Cellular Imaging and Free Radical Scavenging.
Shaojing Zhao,Minhuan Lan,Xiaoyue Zhu,Hongtao Xue,Tsz-Wai Ng,Xiang-Min Meng,Chun-Sing Lee,Pengfei Wang,Wenjun Zhang +8 more
TL;DR: Nitrogen and sulfur codoped carbon dots prepared from garlic by a hydrothermal method demonstrated to possess good water dispersibility, strong blue fluorescence emission, and excellent photo and pH stabilities, and could be used as an excellent fluorescent probe for cellular multicolor imaging.
Journal ArticleDOI
Recent developments in carbon nanomaterial sensors
TL;DR: This review considers recent developments in the use of carbon nanoparticles and nanostructures as sensors and considers how they can be used to detect a diverse range of analytes.
Journal ArticleDOI
Recent advances in carbon nanodots: synthesis, properties and biomedical applications.
TL;DR: A mini review is presented concerning the most recent research progress of carbon nanodots, which have emerged as one of the most attractive photoluminescent materials.
References
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Principles of fluorescence spectroscopy
TL;DR: This book describes the fundamental aspects of fluorescence, the biochemical applications of this methodology, and the instrumentation used in fluorescence spectroscopy.
Journal ArticleDOI
Luminescent Carbon Nanodots: Emergent Nanolights
Sheila N. Baker,Gary A. Baker +1 more
TL;DR: This Review summarize recent advances in the synthesis and characterization of C-dots and speculate on their future and discuss potential developments for their use in energy conversion/storage, bioimaging, drug delivery, sensors, diagnostics, and composites.
Journal ArticleDOI
Quantum-sized carbon dots for bright and colorful photoluminescence.
Ya-Ping Sun,Bing Zhou,Yi Lin,Wei Wang,K. A. Shiral Fernando,Pankaj Pathak,Mohammed J. Meziani,Barbara A. Harruff,Xin Wang,Haifang Wang,Pengju G. Luo,Hua Yang,Muhammet E. Köse,Bailin Chen,L. Monica Veca,Su-Yuan Xie +15 more
TL;DR: It is reported that nanoscale carbon particles (carbon dots) upon simple surface passivation are strongly photoluminescent in both solution and the solid state.
Journal ArticleDOI
Hydrothermal route for cutting graphene sheets into blue-luminescent graphene quantum dots
TL;DR: This work reports on a novel and simple hydrothermal approach for the cutting of GSs into surface-functionalized GQDs, which were found to exhibit bright blue photoluminescence (PL), which has never been observed in GSs and GNRs owing to their large lateral sizes.
Journal ArticleDOI
A toxicologic review of quantum dots: toxicity depends on physicochemical and environmental factors.
TL;DR: Although they offer potentially invaluable societal benefits, quantum dots may also pose risks to human health and the environment under certain conditions, and it is within this context that the need for understanding the potentially harmful side effects of these materials becomes clear.