Solvothermal synthesis of nitrogen-doped MXene quantum dots for the detection of alizarin red based on inner filter effect

Yan, Fanyong; Sun, Jie; Zang, Yueyan; Sun, Zhonghui; Zhang, Hao; Xu, Jinxia; Wang, Xiang

doi:10.1016/j.dyepig.2021.109720

Cited by 36 publications

(27 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reproduced with permission: Copyright 2021, Elsevier. [52] [54] of MQDs/metal composites is mainly through the nucleation and growth of metal NPs on the surface of MQDs. Metal NPs are dispersed on the support substrate MQDs with high surface area in the form of NPs to improve accessibility and reduce cost.…”

Section: Mqds/metal Compositesmentioning

confidence: 99%

Advances and challenges in designing MXene quantum dots for sensors

Cheng

Jiang

Chaemchuen

et al. 2023

Carbon Neutralization

View full text Add to dashboard Cite

MXene quantum dots (MQDs) sensor is a promising platform for identifying target analytes by sensing fluorescence, electrochemical signals, photoluminescence, biomedical, and so on. On the way to designing MQDs in the sensors, substantial progress has been made with basic scientific and technological hurdles remaining. Combining specific functional designs of MQDs with mechanistic understanding provides new research prospects and technology opportunities even at the industrial level. However, MQDs must be able to detect target analytes with higher sensitivity, robust stability, and applied compatibility. Here, we review the recent advances and challenges in the synthetic strategies and rational design of MQDs. By zooming in on several representative examples, we discuss the existing potentials of MQDs in the application of fluorescence, electrochemical luminescence, photoluminescence, colorimetric/fluorescent dual‐mode, and biomedical sensors. Finally, we identify the opportunities and challenges to further understanding of MQDs sensors.

show abstract

Section: Mqds/metal Compositesmentioning

confidence: 99%

Advances and challenges in designing MXene quantum dots for sensors

Cheng

Jiang

Chaemchuen

et al. 2023

Carbon Neutralization

View full text Add to dashboard Cite

show abstract

Section: Preparationmentioning

confidence: 99%

“…Single quantum dot materials failed to achieve the required properties, so heteroatom‐doped MQDs were studied, including the single‐atomically doped N‐MQDs, [45] the diatomically doped the P, N−Ti 3 C 2 QDs [46] and the S, N−Ti 3 C 2 QDs, [60] etc. Yan et al [45] . synthesized nitrogen‐doped MQDs (N‐MQDs) using Ti 3 C 2 MXenes as the precursor and o‐phenylenediamine (OPD) as the nitrogen source by a solvothermal method.…”

Section: Preparationmentioning

confidence: 99%

“…Single quantum dot materials failed to achieve the required properties, so heteroatom-doped MQDs were studied, including the single-atomically doped N-MQDs, [45] the diatomically doped the P, NÀ Ti 3 C 2 QDs [46] and the S, NÀ Ti 3 C 2 QDs, [60] etc. Yan et al [45] synthesized nitrogen-doped MQDs (N-MQDs) using Ti 3 C 2 MXenes as the precursor and o-phenylenediamine (OPD) as the nitrogen source by a solvothermal method. The products can be uniformly dispersed spherical nanoparticles with an average particle size of 7.5 nm, which have the advantages of resistance to weak acids and bases, luminescence independent of excitation, and large Stokes shift (160 nm).…”

Section: Solvothermalmentioning

confidence: 99%

See 1 more Smart Citation

MXenes Quantum Dots for Biomedical Applications: Recent Advances and Challenges

Sun

Tang

Shi

et al. 2022

The Chemical Record

View full text Add to dashboard Cite

MXenes have aroused widespread interest in the biomedical field owing to their remarkable photo-thermal conversion capabilities combined with large specific surface areas. MXenes quantum dots (MQDs) have been synthesized either by the physical or chemical methods based on MXenes as precursors, which possess smaller size, higher photoluminescence, coupled with low cytotoxicity and many beneficial properties of MXenes, thereby having potential biomedical applications. Given this, this review summarized the synthesis methods, optical, surface and biological properties of MQDs along with their practical applications in the field of biomedicine. Finally, the authors make an outlook towards the synthesis, properties and applications of MQDs in the future biomedicine field.

show abstract

“…To enhance the optical property and expand the application field of MQDs, a series of works about atom doping have been published. − In general, nitrogen doping can change the internal electronic environment to produce strong fluorescence, excellent catalytic properties, good cell permeability, and low cytotoxicity, thus broading applications in nanoprobes, optoelectronic devices, catalysis, and biomedicine. − While the mode of covalent nitrogen doping in MQDs is still unknown. The functional groups on MQDs for covalent binding in the past works were relatively lacking, which may limit the further application of MQDs in other fields of surface engineering.…”

Section: Introductionmentioning

confidence: 99%

Covalently N-Doped MXene Quantum Dots for Highly Stable Fluorescent Cu²⁺ Ion Sensor

Wan

Zhou

Yang

et al. 2022

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

MXene quantum dots (MQDs) have excellent photoelectrochemical properties and are attracting considerable attention in the academic field. In this study, we synthesized amino-rich MQDs on the surface by modifying the Ti 3 C 2 nanosheets with 3-aminopropyltriethoxysilane (APTES) and then cutting the functional nanosheets into quantum dots by hydrothermal reaction. The N-MQDs were characterized by UV−vis spectrophotometry, Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The prepared N-MQDs had an average particle size of 8.63 nm. The N-MQDs exhibited excellent linearity and sensitivity for the detection of Fe 3+ and Cu 2+ ions over a concentration range of 0.5−500 μM. The limits of detection (LODs) for the Fe 3+ and Cu 2+ ions were calculated to be 0.17 and 0.15 μM, respectively. Compared with previous N-doped Ti 3 C 2 MQDs, our prepared N-MQDs possessed lower LOD for the detection of Cu 2+ ions. The quantum dot showed a potential to detect Cu 2+ ions in water samples with sodium hexametaphosphate (SHPP) as a Fe 3+ ions masking agent. N-doped MQDs can enhance the fluorescence quantum yield and detection sensitivity for metal ions over that of MQDs without amination. N-MQDs prepared by the method with active amino groups and high stability than previous works, which can expand the application of MQDs in other fields. This study also opens an avenue for the covalent modification of MXene QDs materials and surface engineering fields.

show abstract

Solvothermal synthesis of nitrogen-doped MXene quantum dots for the detection of alizarin red based on inner filter effect

Cited by 36 publications

References 37 publications

Advances and challenges in designing MXene quantum dots for sensors

Advances and challenges in designing MXene quantum dots for sensors

MXenes Quantum Dots for Biomedical Applications: Recent Advances and Challenges

Covalently N-Doped MXene Quantum Dots for Highly Stable Fluorescent Cu²⁺ Ion Sensor

Contact Info

Product

Resources

About

Solvothermal synthesis of nitrogen-doped MXene quantum dots for the detection of alizarin red based on inner filter effect

Cited by 36 publications

References 37 publications

Advances and challenges in designing MXene quantum dots for sensors

Advances and challenges in designing MXene quantum dots for sensors

MXenes Quantum Dots for Biomedical Applications: Recent Advances and Challenges

Covalently N-Doped MXene Quantum Dots for Highly Stable Fluorescent Cu2+ Ion Sensor

Contact Info

Product

Resources

About

Covalently N-Doped MXene Quantum Dots for Highly Stable Fluorescent Cu²⁺ Ion Sensor