2D CTAB-MoSe2 Nanosheets and 0D MoSe2 Quantum Dots: Facile Top-Down Preparations and Their Peroxidase-Like Catalytic Activity for Colorimetric Detection of Hydrogen Peroxide
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Reagents
2.2. Methods
2.2.1. Preparation of Surfactant Modified Two-Dimensional (2D) MoSe2 Nanosheets (NSs)
2.2.2. Preparation of 0D MoSe2 QDs
2.3. Characterization
2.4. Peroxidase-Mimetic Activity of MoSe2 Quantum Dots (QDs) and 2D Cetyltrimethyl Ammonium Bromide (CTAB)-MoSe2 NSs
3. Results and Discussion
3.1. Structural Studies
3.2. Surface Elemental and Valence State Analysis
3.3. Optical Property Studies
3.4. Peroxidase-Like Activities and Steady-State Kinetic Assay
3.5. Actives Species Trapping Tests and Peroxidase-Like Catalytic Mechanism
3.6. Colorimetric Detection of H2O2 by MoSe2-Based Assay System
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Catalyst | Linear Range (μM) | Detection Limit (μM) | Ref. |
---|---|---|---|
Positively-charged Au nanoparticles (NPs) | 2–200 | 0.5 | [15] |
h-BN/N-MoS2 | 1–1000 | 0.4 | [69] |
Few-layered MoSe2 nanosheets (NSs) | 10–160 | 0.4 | [27] |
MoS2 NPs | 3–120 | 1.25 | [23] |
SDS–MoS2 NPs | 2–100 | 0.32 | [24] |
g-C3N4 | 5–100 | 1 | [70] |
MoS2 QDs/g-C3N4 NSs | 2–50 | 0.155 | [71] |
WS2 Nanosheets | 5–200 | 1.5 | [72] |
2D CTAB-MoSe2 | 10–250 | 4 | This work |
0D MoSe2 QDs quantum dots (QDs) | 10–100 | 4 | This work |
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Hang, D.-R.; Pan, Y.-Q.; Sharma, K.H.; Chou, M.M.C.; Islam, S.E.; Wu, H.-F.; Liang, C.-T. 2D CTAB-MoSe2 Nanosheets and 0D MoSe2 Quantum Dots: Facile Top-Down Preparations and Their Peroxidase-Like Catalytic Activity for Colorimetric Detection of Hydrogen Peroxide. Nanomaterials 2020, 10, 2045. https://doi.org/10.3390/nano10102045
Hang D-R, Pan Y-Q, Sharma KH, Chou MMC, Islam SE, Wu H-F, Liang C-T. 2D CTAB-MoSe2 Nanosheets and 0D MoSe2 Quantum Dots: Facile Top-Down Preparations and Their Peroxidase-Like Catalytic Activity for Colorimetric Detection of Hydrogen Peroxide. Nanomaterials. 2020; 10(10):2045. https://doi.org/10.3390/nano10102045
Chicago/Turabian StyleHang, Da-Ren, Ya-Qi Pan, Krishna Hari Sharma, Mitch M. C. Chou, Sk Emdadul Islam, Hui-Fen Wu, and Chi-Te Liang. 2020. "2D CTAB-MoSe2 Nanosheets and 0D MoSe2 Quantum Dots: Facile Top-Down Preparations and Their Peroxidase-Like Catalytic Activity for Colorimetric Detection of Hydrogen Peroxide" Nanomaterials 10, no. 10: 2045. https://doi.org/10.3390/nano10102045