Directly Using Ti3C2Tx MXene for a Solid-Contact Potentiometric pH Sensor toward Wearable Sweat pH Monitoring
Abstract
:1. Introduction
2. Materials and Methods
2.1. Material and Apparatus
2.2. Preparation of Ti3C2Tx
2.3. Fabrication of Ti3C2Tx-Based pH Electrodes
2.4. Fabrication of Flexible pH Sensor
2.5. Fabrication of Solid Ag/AgCl Reference Electrode
2.6. Electrochemical Measurement Methods
3. Results
3.1. Structures and Compositions of Ti3C2Tx
3.2. Potentiometric pH Response
3.3. Flexible pH Sensor and On-Body Sweat Monitoring
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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Materials | Linear pH Range | Sensitivity (mV pH-1) | References |
---|---|---|---|
PANI/MXene | 1–11 | −41.91 | [30] |
RuO2 | 1–13 | −49.8 to −59.1 | [33] |
RuO2 | 2–12 | −55 | [34] |
IrOx | 2–12 | −51.1 | [36] |
IrO2 | 4–8 | −47.54 | [38] |
WO3 | 1–7 | −44.85 | [39] |
WO3/MWCNT | 2–12 | −41.0 | [40] |
WO3 nanofiber | 3–11 | −38.5 | [41] |
ZnO nanorods | 4–10 | −44.56 | [46] |
PANI/LGG-MXene | 4–9 | −57.03 | [47] |
PANI/CNT | 5–9 | −45.9 | [48] |
MILD-Ti3C2Tx | 1–11 | −37.91 ± 0.63 | This work |
HF-Ti3C2Tx | 1–11 | −43.51 ± 0.53 | This work |
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Liang, R.; Zhong, L.; Zhang, Y.; Tang, Y.; Lai, M.; Han, T.; Wang, W.; Bao, Y.; Ma, Y.; Gan, S.; et al. Directly Using Ti3C2Tx MXene for a Solid-Contact Potentiometric pH Sensor toward Wearable Sweat pH Monitoring. Membranes 2023, 13, 376. https://doi.org/10.3390/membranes13040376
Liang R, Zhong L, Zhang Y, Tang Y, Lai M, Han T, Wang W, Bao Y, Ma Y, Gan S, et al. Directly Using Ti3C2Tx MXene for a Solid-Contact Potentiometric pH Sensor toward Wearable Sweat pH Monitoring. Membranes. 2023; 13(4):376. https://doi.org/10.3390/membranes13040376
Chicago/Turabian StyleLiang, Rongfeng, Lijie Zhong, Yirong Zhang, Yitian Tang, Meixue Lai, Tingting Han, Wei Wang, Yu Bao, Yingming Ma, Shiyu Gan, and et al. 2023. "Directly Using Ti3C2Tx MXene for a Solid-Contact Potentiometric pH Sensor toward Wearable Sweat pH Monitoring" Membranes 13, no. 4: 376. https://doi.org/10.3390/membranes13040376