Enhanced ammonia sensing performance based on MXene-Ti3C2Tx multilayer nanoflakes functionalized by tungsten trioxide nanoparticles

Guo, Xuezheng; Ding, Yanqiao; Kuang, Delin; Wu, Zhan‐Chao; Sun, Xia; Du, Bin; Liang, Chengyao; Wu, Yingjie; Qu, Weijie; Xiong, Lian; He, Yong

doi:10.1016/j.jcis.2021.03.115

Cited by 119 publications

(46 citation statements)

References 45 publications

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“…First, the multilayer Ti 3 C 2 T x was synthesized by the hydrofluoric acid (HF) etching method as we reported before. 29 For the g-C 3 N 4 /TiO 2 /Ti 3 C 2 T x ternary nanomaterial, it was synthesized by thermal polymerization. 30 Typically, 50 mg of the prepared multilayer Ti 3 C 2 T x and 300 mg of thiourea (CH 4 N 2 S, 99 wt %, Guangdong Guanghua Sci-Tech Co., Ltd.) were put in a mortar and ground evenly and then transferred into a quartz boat.…”

Section: Methodsmentioning

confidence: 99%

“…The detailed process can be obtained from our previous literature. 29 The humidity test was employed at a room temperature of 20 °C. The curves of impedance versus time, complex impedance spectroscopy, and the Bode diagram of the sensors were recorded by an electrochemical workstation (CH Instruments, CHI 660E) with a bias voltage of 0.5 V. According to the method recommended by International Organization for Standardization (ISO 483:2005), controlled RH environments were obtained through different sing graphite-monochromatized Cu Kα radiation.…”

Section: Methodsmentioning

confidence: 99%

“…First, the multilayer Ti 3 C 2 T x was synthesized by the hydrofluoric acid (HF) etching method as we reported before . For the g-C 3 N 4 /TiO 2 /Ti 3 C 2 T x ternary nanomaterial, it was synthesized by thermal polymerization .…”

Section: Methodsmentioning

confidence: 99%

“…The detailed process can be obtained from our previous literature . The humidity test was employed at a room temperature of 20 °C.…”

Section: Methodsmentioning

confidence: 99%

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Humidity Sensing by Graphitic Carbon Nitride Nanosheet/TiO₂ Nanoparticle/Ti₃C₂T_x Nanosheet Composites for Monitoring Respiration and Evaluating the Waxing of Fruits

Guo

Kuang

Zhu

et al. 2021

ACS Appl. Nano Mater.

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Relative humidity (RH) is an important physical quantity in industry, agriculture, and medical treatment. However, it is still challenging to exploit high-performance humidity sensors that can meet the detection requirement for responding to both high humidity variation and low humidity variation. In this work, ternary graphitic carbon nitride (g-C 3 N 4 ) nanosheet/TiO 2 nanoparticle/Ti 3 C 2 T x nanosheet composites were synthesized by in situ oxidation and thermal polymerization. The response of the g-C 3 N 4 /TiO 2 /Ti 3 C 2 T x sensor reaches 531 from 11−95% RH, which enhances 4, 11, and 450 times compared with that of TiO 2 , g-C 3 N 4 , and TiO 2 /Ti 3 C 2 T x sensors. Moreover, the ternary g-C 3 N 4 /TiO 2 /Ti 3 C 2 T x sensor demonstrates excellent reproducibility, fast response speed, low hysteresis loop, and good anti-interference ability. The as-fabricated g-C 3 N 4 /TiO 2 /Ti 3 C 2 T x sensor is further utilized in practical applications for human respiration detection and evaluation of waxing of fruits. The test results show that our fabricated sensor is capable of precisely sensing breathing status and distinguishing the waxing of fruits. In addition, our sensor can be used in most application scenarios and accelerate the integration of the Internet of Things (IoT).

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…The detailed process can be obtained from our previous literature . The humidity test was employed at a room temperature of 20 °C.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Humidity Sensing by Graphitic Carbon Nitride Nanosheet/TiO₂ Nanoparticle/Ti₃C₂T_x Nanosheet Composites for Monitoring Respiration and Evaluating the Waxing of Fruits

Guo

Kuang

Zhu

et al. 2021

ACS Appl. Nano Mater.

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“…The active sites provided by WO 3 and the electron conversion of the heterojunctions promote the sensitivity of NH 3 detection, which provides an efficient route for the preparation of novel MXene-based sensitive materials for high-performance NH 3 sensors. 93…”

Section: Detection Electrode Materialsmentioning

confidence: 99%

Recent progress in the fabrication of flexible materials for wearable sensors

et al. 2022

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Facile Fabrication of Oxygen‐Enriched MXene‐Based Sensor and Their Ammonia Gas‐Sensing Enhancement

Cao

Zhou

Opaprakasit

et al. 2023

Adv Materials Inter

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Health and Safety Executive, NH 3 exposure cannot exceed over eight hours for 25 ppm and over 15 min for 35 ppm of concentration. It was reported that the NH 3 concentration in indoor air is significantly higher than in outdoor air. [3] Due to its high hydrogen capacity (17.6 wt%), NH 3 is also attracting attention as a candidate for a hydrogen carrier in the future hydrogen society for hydrogen delivery and distribution. The safety and toxicity issues are initial and foremost for NH 3 storage and transport. [6][7][8] Therefore, monitoring NH 3 gas is essential to ensure health safety and restrict environmental pollution. There are many methods for NH 3 concentration detection, in which solid-state sensing methods with various sensing materials are one of the most prevalent methods. The selection of sensing materials with higher sensitivity, selectivity, and stability is of high interest in developing reliable NH 3 gas sensors.Some materials have been used for sensing NH 3, such as metal oxides (TiO 2 , ZnO, SnO 2 , WO 3 , MoO 3 ), [4,[9][10][11][12][13] metal sulfides (SnS 2 , ZnS), [14,15] conductive polymers: polypyrrole (PPy), [16] polyaniline (PANI), [17,18] polythiophene (PTs), [19] and new groups of 2D materials: graphene, [20][21][22][23] MXene, [24][25][26] and MoS 2 , [27,28] which take the spotlight in toxic gas detection such as the NH 3 gas. Metal oxides are attractive for gas sensing with their wide-ranged detection with multiple gases, simplicity, low cost, and good compatibility. However, they have severe Various sensing materials have been demonstrated to increase the precision of sensing technology. Nevertheless, this complicates the fabrication process for materials integration to obtain devices that can simultaneously accommodate various gas detectors, like electronic nose.

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Enhanced ammonia sensing performance based on MXene-Ti3C2Tx multilayer nanoflakes functionalized by tungsten trioxide nanoparticles

Cited by 119 publications

References 45 publications

Humidity Sensing by Graphitic Carbon Nitride Nanosheet/TiO₂ Nanoparticle/Ti₃C₂T_x Nanosheet Composites for Monitoring Respiration and Evaluating the Waxing of Fruits

Humidity Sensing by Graphitic Carbon Nitride Nanosheet/TiO₂ Nanoparticle/Ti₃C₂T_x Nanosheet Composites for Monitoring Respiration and Evaluating the Waxing of Fruits

Recent progress in the fabrication of flexible materials for wearable sensors

Facile Fabrication of Oxygen‐Enriched MXene‐Based Sensor and Their Ammonia Gas‐Sensing Enhancement

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Enhanced ammonia sensing performance based on MXene-Ti3C2Tx multilayer nanoflakes functionalized by tungsten trioxide nanoparticles

Cited by 119 publications

References 45 publications

Humidity Sensing by Graphitic Carbon Nitride Nanosheet/TiO2 Nanoparticle/Ti3C2Tx Nanosheet Composites for Monitoring Respiration and Evaluating the Waxing of Fruits

Humidity Sensing by Graphitic Carbon Nitride Nanosheet/TiO2 Nanoparticle/Ti3C2Tx Nanosheet Composites for Monitoring Respiration and Evaluating the Waxing of Fruits

Recent progress in the fabrication of flexible materials for wearable sensors

Facile Fabrication of Oxygen‐Enriched MXene‐Based Sensor and Their Ammonia Gas‐Sensing Enhancement

Contact Info

Product

Resources

About

Humidity Sensing by Graphitic Carbon Nitride Nanosheet/TiO₂ Nanoparticle/Ti₃C₂T_x Nanosheet Composites for Monitoring Respiration and Evaluating the Waxing of Fruits

Humidity Sensing by Graphitic Carbon Nitride Nanosheet/TiO₂ Nanoparticle/Ti₃C₂T_x Nanosheet Composites for Monitoring Respiration and Evaluating the Waxing of Fruits