2024年12月1日 · Carbon quantum dots (CQDs) are carbon-based biocompatible quantum dots that have low toxicity, are more soluble in water, have broad application areas, and the surface modification of these can be performed easily. In this study, we present a new CQD synthesis method with cost-effective reactants that can be easily found in laboratories are used.

2024年4月1日 · SEM allows researchers to investigate the morphology and structural features of CQDs with high resolution [172]. SEM characterization of CQDs involves scanning a focused electron beam across the sample's surface and detecting the associated signals, which include secondary electrons, backscattered electrons, and distinctive X-rays, to provide a ...

2025年3月15日 · This study explores the synthesis of CQDs through both top-down and bottom-up methods and characterizes them with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV–Vis spectroscopy, photoluminescence, transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X …

2024年8月2日 · FTIR, EDS, SEM, and XRD analyses show that the synthesised CZF@CQDs photocatalyst has been successfully made, and TGA analysis demonstrates the high stability of the nanocomposite at high ...

2016年1月12日 · It is found that carbon quantum dots (CQDs) self-assemble to a layer structure at ice crystals-water interface with freeze- drying. Such layers interconnect with each other, forming a...

2023年8月7日 · In recent years, the synthesis of new generation carbon quantum dots (CQDs) from waste precursors has gained more remarkable attention than other quantum dots 11, 33, especially in wastewater...

2025年3月23日 · a) SEM cross-section of the a typical InAs-Mix CQD-based photodetectors; b) Light power dependence of J–V curves of mixture halides-passivated InAs CQDs with 940 nm excitation; c) Otpimzied EQE of the photodetectors without bias and under 0.5 V bias; d) the otpimzied EQE of the photodetectors without bias and under 0.5 V bias; d) Thickness ...

Carbon quantum dots (CQDs) are a new generation of carbon nanoparticles with a lot of potential for food analysis. CQDs with robust physicochemical properties are one of...

碳量子点 (Carbon Quantum Dots, CQD)是由分散的类球状碳颗粒组成，尺寸极小（在10 nm以下），具有荧光性质的新型 纳米碳材料 [1] [3]。 碳量子点通常是由无定型和晶态的碳核组成，在碳核表面含有不同的含氧官能团，例如羟基，羧基等。 碳量子点主要由碳氢氧等元素组成，而碳元素的含量相对较高。 许多研究者声称在碳量子点中存在sp 2 晶态的碳，但是结晶性并不好，在碳量子点的边缘具有很多的缺陷，而内部存在类似石墨烯的晶态结构。 已经有大量文献报道了碳量子 …

2023年2月16日 · Carbon quantum dots (CQDs), also known as carbon dots (CDs), are novel zero-dimensional fluorescent carbon-based nanomaterials. CQDs have attracted enormous attention around the world because of their excellent optical properties as well as water solubility, biocompatibility, low toxicity, eco-friendliness, and simple synthesis routes.