A dual-mode foam sensor employing Ti3C2Tx/In2O3 composites for NH3 detection with memory function and body movement monitoring for kidney disease diagnosis

Kan, Zitong; Shi, Fangyu; Yang, Long; Zhou, Qingqing; Zhang, Yuhong; Qi, Yu; Zhang, Huan; Dong, Biao; Ren, Luquan; Song, Hongwei; Xu, Lin

doi:10.1039/d3ta05670h

Cited by 5 publications

(1 citation statement)

References 46 publications

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“…After ammonia was introduced, the protonation process of SAMs/CeO 2 @TiO 2 NTA was further verified by in situ FT-IR spectra (Figure S16). The Lewis basic NH 3 molecules would penetrate the SAM shield via the deprotonated −COOH group channel (Figure 4e), 44 reaching the surface of the active materials and facilitating electron exchange (Figure S17) to generate response signals. It should be noted that the appropriate functional group composition (−COOH/−CH 3 ) of the SAM shield has a significant impact on both the humidity resistance and the ammonia sensing performance.…”

Section: O (Gas)mentioning

confidence: 99%

Customizing Wettability of Defect-Rich CeO₂/TiO₂ Nanotube Arrays for Humidity-Resistant, Ultrafast, and Sensitive Ammonia Response

He,

Li,

Kou

et al. 2024

ACS Sens.

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In all their applications, gas sensors should satisfy several requirements, including low cost, reduced energy consumption, fast response/recovery, high sensitivity, and reliability in a broad humidity range. Unfortunately, the fast response/recovery and sensing reliability under high humidity conditions are often still missing, especially those working at room temperature. In this study, a humidity-resistant gas sensor with an ultrafast response/recovery rate was designed by integrating a defect-rich semiconducting sensing interface and a self-assembled monolayer (SAM) with controllable wettability. As a proof-of-concept application, ammonia (NH3), one of the atmospheric and indoor pollutants, was selected as the target gas. The decoration of interconnected defective CeO2 nanowires on spaced TiO2 nanotube arrays (NTAs) provided superior NH3 sensing performances. Moreover, we showed that manipulating the functional end group of SAMs is an efficient and simple method to adjust the wettability, by which 86% sensitivity retention with an ultrafast response (within 5 s) and a low limit of detection (45 ppb) were achieved even at 75% relative humidity and room temperature. This work provides a new route toward the comprehensive design and application of metal oxide semiconductors for trace gas monitoring under harsh conditions, such as those of agricultural, environmental, and industrial fields.

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Section: O (Gas)mentioning

confidence: 99%

Customizing Wettability of Defect-Rich CeO₂/TiO₂ Nanotube Arrays for Humidity-Resistant, Ultrafast, and Sensitive Ammonia Response

He,

Li,

Kou

et al. 2024

ACS Sens.

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Highly Sensitive Room‐Temperature Detection of Ammonia in the Breath of Kidney Disease Patients Using Fe₂Mo₃O₈/MoO₂@MoS₂ Nanocomposite Gas Sensor

Li,

Zeng,

Zhuo

et al. 2024

Advanced Science

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A novel Fe2Mo3O8/MoO2@MoS2 nanocomposite is synthesized for extremely sensitive detection of NH3 in the breath of kidney disease patients at room temperature. Compared to MoS2, α‐Fe2O3/MoS2, and MoO2@MoS2, it shows the optimal gas‐sensing performance by optimizing the formation of Fe2Mo3O8 at 900 °C. The annealed Fe2Mo3O8/MoO2@MoS2 nanocomposite (Fe2Mo3O8/MoO2@MoS2‐900 °C) sensor demonstrates a remarkably high selectivity of NH3 with a response of 875% to 30 ppm NH3 and an ultralow detection limit of 3.7 ppb. This sensor demonstrates excellent linearity, repeatability, and long‐term stability. Furthermore, it effectively differentiates between patients at varying stages of kidney disease through quantitative NH3 measurements. The sensing mechanism is elucidated through the analysis of alterations in X‐ray photoelectron spectroscopy (XPS) signals, which is supported by density functional theory (DFT) calculations illustrating the NH3 adsorption and oxidation pathways and their effects on charge transfer, resulting in the conductivity change as the sensing signal. The excellent performance is mainly attributed to the heterojunction among MoS2, MoO2, and Fe2Mo3O8 and the exceptional adsorption and catalytic activity of Fe2Mo3O8/MoO2@MoS2‐900 °C for NH3. This research presents a promising new material optimized for detecting NH3 in exhaled breath and a new strategy for the early diagnosis and management of kidney disease.

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Preparation and mechanism study of ZnO ammonia gas sensor based on precious metal nanoparticles (AuNPs, AgNPs) modification

Li,

Zhang,

Chen

et al. 2025

Journal of Alloys and Compounds

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A dual-mode foam sensor employing Ti₃C₂T_x/In₂O₃ composites for NH₃ detection with memory function and body movement monitoring for kidney disease diagnosis

Abstract: Research on non-invasive nephropathy testing has been a prominent area of interest both domestically and internationally. However, the conventional NH3 measurement using gas sensors is distorted by other exhaled...

Cited by 5 publications

References 46 publications

Customizing Wettability of Defect-Rich CeO₂/TiO₂ Nanotube Arrays for Humidity-Resistant, Ultrafast, and Sensitive Ammonia Response

Customizing Wettability of Defect-Rich CeO₂/TiO₂ Nanotube Arrays for Humidity-Resistant, Ultrafast, and Sensitive Ammonia Response

Highly Sensitive Room‐Temperature Detection of Ammonia in the Breath of Kidney Disease Patients Using Fe₂Mo₃O₈/MoO₂@MoS₂ Nanocomposite Gas Sensor

Preparation and mechanism study of ZnO ammonia gas sensor based on precious metal nanoparticles (AuNPs, AgNPs) modification

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A dual-mode foam sensor employing Ti3C2Tx/In2O3 composites for NH3 detection with memory function and body movement monitoring for kidney disease diagnosis

Abstract: Research on non-invasive nephropathy testing has been a prominent area of interest both domestically and internationally. However, the conventional NH3 measurement using gas sensors is distorted by other exhaled...

Cited by 5 publications

References 46 publications

Customizing Wettability of Defect-Rich CeO2/TiO2 Nanotube Arrays for Humidity-Resistant, Ultrafast, and Sensitive Ammonia Response

Customizing Wettability of Defect-Rich CeO2/TiO2 Nanotube Arrays for Humidity-Resistant, Ultrafast, and Sensitive Ammonia Response

Highly Sensitive Room‐Temperature Detection of Ammonia in the Breath of Kidney Disease Patients Using Fe2Mo3O8/MoO2@MoS2 Nanocomposite Gas Sensor

Preparation and mechanism study of ZnO ammonia gas sensor based on precious metal nanoparticles (AuNPs, AgNPs) modification

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A dual-mode foam sensor employing Ti₃C₂T_x/In₂O₃ composites for NH₃ detection with memory function and body movement monitoring for kidney disease diagnosis

Customizing Wettability of Defect-Rich CeO₂/TiO₂ Nanotube Arrays for Humidity-Resistant, Ultrafast, and Sensitive Ammonia Response

Customizing Wettability of Defect-Rich CeO₂/TiO₂ Nanotube Arrays for Humidity-Resistant, Ultrafast, and Sensitive Ammonia Response

Highly Sensitive Room‐Temperature Detection of Ammonia in the Breath of Kidney Disease Patients Using Fe₂Mo₃O₈/MoO₂@MoS₂ Nanocomposite Gas Sensor