Simple Synthesis of Ti3C2 MXene Quantum Dots

According to a recent study published in Sensors and Actuators B: Chemical, a group of researchers has successfully developed nitrogen- and phosphorous-treated Ti3C2 MXene quantum dots (Ti3C2 MQDs) using a simple approach.

Simple synthesis of Ti3C2 MXene quantum dots

Stady: Microwave-assisted nitrogen synthesis, phosphorous-doped Ti3C2 MXene quantum dots for dual-modal nitrite screening/fluorometrics with a mobile smartphone platform. Image Credit: mitchFOTO /

Excitation-dependent fluorescence, anti-photobleaching, and good dispersion were observed in the as-synthesized N and P-Ti3C2 MQDs, which could provide a basis for the widespread use of MQDs in food analysis.

Adverse effects of nitrite (NO2)

Nitrite (NO2) is an important chemical used in the food industry as an antioxidant and fertilizer. However, elevated NO2 Concentrations have been shown to pose a significant public health risk.

Severe human disorders such as cancer, convulsions, and neurological disease have been linked to NO2 intake.

The carcinogenic chemical N-nitrosamine may be formed in vivo from no2 Ingested during physical and chemical functions. The International Agency for Research on Cancer announced no2 CCM Class 2A. As a result, developing new approaches to NO2 The disclosure deserves serious attention and inquiry.

Detection of NO2 Using fluorescence and color measurement strategies

Several traditional techniques have been used to detect the trace of NO2, including electrophoresis, heterogeneous catalysis, and phosphorescence. However, the majority of published solutions are time consuming, difficult to operate, expensive, and impractical for real world applications.

Fluorescence detection and spectrometry methodologies are highlighted as the most promising techniques for developing portable detectors for NO2 inspection due to its low cost, speed of reaction and simplicity of handling.

With the advancement of fluorescent materials, many biosensors to determine NO2 developed, including carbon quantum dots, synthesized nanoparticles, and metallic nanoclusters.

During the same period, there has been significant progress in the use of NO . spectrophotometers2 recently detected. In the statistical analysis, the portability and use of mobile phones made a significant contribution.

A few dual-model tests (fluorescent and colorimetric) have been screened with the help of smartphone, which can convert color features into data information that will enable the correct feature set of NO2-, to increase accuracy and sensitivity.

Therefore, the possibility of developing NO2 A dual-modal sensor platform that uses a smartphone to detect NO2interesting.

Importance and Limitations of Ti3C2 MQDs

Carving of MXene into Ti3C2 MQDs may result in an improved dissolution rate, greater conductivity, simpler assignment, and distinct luminescence.

As a result, Ti3C2 MQDs are particularly promising for optoelectronic devices, pharmacological applications, cancer therapy, biomedicine and cell imaging. However, the development of Ti3C2 MQDs is still in its early stages, and their most interesting optical features are somewhat less than expected.

The majority of known Ti3C2 MQDs are significantly emitted at longer wavelengths, which limits their use in a variety of sectors. Furthermore, most papers for the production of Ti3C2 MQDs include the difficult and time-consuming process of removing layered MXene using hydrothermal techniques.

As a result, facile synthesis of Ti3C2 MQDs with strong fluorescence at longer wavelength is critical for a wider range of applications.

A new method for producing Ti3C2 MQDs

The researchers used a thermo-assisted synthesis of Ti3C2 MQDs technology for the first time in this investigation.

In contrast to the hydrothermal approach, this technology was determined to be more comfortable, economical and fast. Microwave-assisted treatment with phosphoric acid in a formamide solvent yielded nitrogen and phosphorous saturated with Ti3C2 MQDs.

Conclusion and prospects

In this study, the researchers used microwave-assisted techniques to fabricate fluorescent condensed N and P-Ti3C2 MQDs, using formamide as a carrier and an activating agent at the same time.

The synthesized N and P-Ti3C2 MQDs showed excellent dispersion and were paired with Phen-Fe2+ To provide a dual-mode sensor.

In terms of high resolution, reliability, and sensitivity, the two-channel chromatic and fluorescent standard approaches are superior to traditional approaches. With the help of online image processing, the above-mentioned sensors based on paper strips have been successfully created for simple on-site manufacturing for visualization detection.

As a result of the proposed work, which not only develops a highly sensitive diagnostic test for NO2 But it is also currently continuing to restrict the optical properties of Ti3C2 MQDs as well as other MXene-derived MQDs, and the expansion of MQDs-based photoluminescence biomaterials is expected to continue to progress.

Continue reading: The role of colloidal nanomaterials in optoelectronics.


Bye, wai. et al. (2022). Microwave-assisted nitrogen synthesis, phosphorous-doped Ti3C2 MXene quantum dots for dual-modal nitrite screening/fluorometrics with a mobile smartphone platform. Sensors and actuators B: chemical. Available at:

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