In Situ Synthesis of a Bi2Te3-Nanosheet/Reduced-Graphene-Oxide Nanocomposite for Non-Enzymatic Electrochemical Dopamine Sensing
Abstract
:1. Introduction
2. Experimental
2.1. Synthesis of BT/rGO Nanocomposite
2.2. Preparation of Modified GCEs
2.3. Characterization
2.4. Electrochemical Measurements
3. Results and Discussion
3.1. Characterization of BT/rGO
3.2. EIS Analysis
3.3. Electrochemical Behavior of Dopamine with Various Modified GCEs
3.4. Optimization of pH
3.5. Analytical Application of Sensor
3.6. Interference and Repeatability Analyses
3.7. Real Sample Analysis
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Modified Electrode | Technique | Sensitivity (µA·mM−1cm−2) | Linear Range (µM) | LOD (µM) | Ref. |
---|---|---|---|---|---|
3D porous GO | CV | - | 0.1–30 | 1.28 | [20] |
rGO/CD 1 | CV | - | 0.5–20 | 1.41 | [21] |
Ag-rGO | DPV | 110 | 10–70 | 1 | [11] |
Au-N-rGO 2 | DPV | 190 | 20–1000 | 2.4 | [12] |
CeO/rGO | DPV | - | 10–150 | 2 | [13] |
MoS2-PANI/rGO | DPV | - | 5–500 | 0.7 | [64] |
GQDs 3@MWCNTs 4 | DPV | - | 0.25–250 | 0.095 | [65] |
BT/rGO | DPV | 222.93 | 10–1000 | 0.06 | Present study |
Content (µM) | Detected (µM) | Recovered (%) | RSD (%) |
---|---|---|---|
10 | 9.11 | 91.11 | 7.8 |
240 | 237.62 | 99.01 | 2.85 |
480 | 481.25 | 100.26 | 3.91 |
560 | 556.99 | 99.46 | 4.6 |
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Shen, H.; Jang, B.; Park, J.; Mun, H.-j.; Cho, H.-B.; Choa, Y.-H. In Situ Synthesis of a Bi2Te3-Nanosheet/Reduced-Graphene-Oxide Nanocomposite for Non-Enzymatic Electrochemical Dopamine Sensing. Nanomaterials 2022, 12, 2009. https://doi.org/10.3390/nano12122009
Shen H, Jang B, Park J, Mun H-j, Cho H-B, Choa Y-H. In Situ Synthesis of a Bi2Te3-Nanosheet/Reduced-Graphene-Oxide Nanocomposite for Non-Enzymatic Electrochemical Dopamine Sensing. Nanomaterials. 2022; 12(12):2009. https://doi.org/10.3390/nano12122009
Chicago/Turabian StyleShen, Haishan, Byungkwon Jang, Jiyoung Park, Hyung-jin Mun, Hong-Baek Cho, and Yong-Ho Choa. 2022. "In Situ Synthesis of a Bi2Te3-Nanosheet/Reduced-Graphene-Oxide Nanocomposite for Non-Enzymatic Electrochemical Dopamine Sensing" Nanomaterials 12, no. 12: 2009. https://doi.org/10.3390/nano12122009