Green synthesis, biomedical and biotechnological applications of carbon and graphene quantum dots. A review

Dorontić

et al. 2020

Ceramics International

Section: Introductionmentioning

confidence: 99%

Gamma irradiation of graphene quantum dots with ethylenediamine: Antioxidant for ion sensing

Dorontić

et al. 2020

Ceramics International

“…Generally, biologically-derived chemicals or natural product extracts obtained from bio-renewable sources with their promising reducing, stabilizing and capping potentials can be deployed for the greener production of mono- and multi-metallic NPs ( Figure 3 ) [ 6 , 79 , 80 , 81 , 82 , 83 ]. However, there are still some important challenging issues persist, including the exact mechanisms for NP formation, limitations to scale up and the reproducibility of procedures [ 52 ].…”

Section: Greener and Sustainable Synthesis Of Trimetallic Npsmentioning

confidence: 99%

Trimetallic Nanoparticles: Greener Synthesis and Their Applications

et al. 2020

Self Cite

Nanoparticles (NPs) and multifunctional nano-sized materials have significant applications in diverse fields, namely catalysis, sensors, optics, solar energy conversion, cancer therapy/diagnosis, and bioimaging. Trimetallic NPs have found unique catalytic, active food packaging, biomedical, antimicrobial, and sensing applications; they preserve an ever-superior level of catalytic activities and selectivity compared to monometallic and bimetallic nanomaterials. Due to these important applications, a variety of preparation routes, including hydrothermal, microemulsion, selective catalytic reduction, co-precipitation, and microwave-assisted methodologies have been reported for the syntheses of these nanomaterials. As the fabrication of nanomaterials using physicochemical methods often have hazardous and toxic impacts on the environment, there is a vital need to design innovative and well-organized eco-friendly, sustainable, and greener synthetic protocols for their assembly, by applying safer, renewable, and inexpensive materials. In this review, noteworthy recent advancements relating to the applications of trimetallic NPs and nanocomposites comprising these NPs are underscored as well as their eco-friendly and sustainable synthetic preparative options.

“…Carbon dots have been extensively reviewed in term of synthesis, physicochemical properties, as well as their potential applications. Here, we refer the reader to the numerous good reviews on carbon dots [72,[82][83][84][85][86][87][88].…”

Section: Carbon Dots As Nanothermometersmentioning

confidence: 99%

Carbon Dots as New Generation Materials for Nanothermometer: Review

Mohammed

Omer

2020

Nanoscale Res Lett

Highly sensitive non-contact mode temperature sensing is substantial for studying fundamental chemical reactions, biological processes, and applications in medical diagnostics. Nanoscale-based thermometers are guaranteeing non-invasive probes for sensitive and precise temperature sensing with subcellular resolution. Fluorescence-based temperature sensors have shown great capacity since they operate as “non-contact” mode and offer the dual functions of cellular imaging and sensing the temperature at the molecular level. Advancements in nanomaterials and nanotechnology have led to the development of novel sensors, such as nanothermometers (novel temperature-sensing materials with a high spatial resolution at the nanoscale). Such nanothermometers have been developed using different platforms such as fluorescent proteins, organic compounds, metal nanoparticles, rare-earth-doped nanoparticles, and semiconductor quantum dots. Carbon dots (CDs) have attracted interest in many research fields because of outstanding properties such as strong fluorescence, photobleaching resistance, chemical stability, low-cost precursors, low toxicity, and biocompatibility. Recent reports showed the thermal-sensing behavior of some CDs that make them an alternative to other nanomaterials-based thermometers. This kind of luminescent-based thermometer is promising for nanocavity temperature sensing and thermal mapping to grasp a better understanding of biological processes. With CDs still in its early stages as nanoscale-based material for thermal sensing, in this review, we provide a comprehensive understanding of this novel nanothermometer, methods of functionalization to enhance thermal sensitivity and resolution, and mechanism of the thermal sensing behavior.