4.7 Review

A review on MXene and its nanocomposites for the detection of toxic inorganic gases

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Article Engineering, Environmental

H2S sensing under various humidity conditions with Ag nanoparticle functionalized Ti3C2Tx MXene field-effect transistors

Qikun Xu et al.

Summary: This study successfully achieved high selectivity and fast response detection of H2S using MXene sensors. A novel self-calibration strategy was introduced to eliminate the influence of humidity in gas detection, offering a viable solution for addressing real-world humidity effects on gas sensors.

JOURNAL OF HAZARDOUS MATERIALS (2022)

Article Chemistry, Analytical

Enhanced NH3 sensing performance at ppb level derived from Ti3C2Tx-supported ZnTi-LDHs nanocomposite with similar metal-semiconductor heterostructure

Yuxiang Qin et al.

Summary: LDHs are attracting attention in gas sensor field due to high specific surface and modifiability, but restacking and poor conductivity hinder performance. By constructing LDHs/Ti3C2Tx nanocomposite, conductivity and adsorption sites are improved, resulting in enhanced sensitivity to rarefied gas. The new gas sensor shows significant enhancement in response value to NH3 at room temperature, with fast response time, high selectivity and long-term stability.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

Article Chemistry, Analytical

Mesoporous MXene/ZnO nanorod hybrids of high surface area for UV-activated NO2 gas sensing in ppb-level

Jing Wang et al.

Summary: The novel Ti3C2Tx MXene/ZnO nanorod hybrids demonstrated high response, sensing rate, sub-ppb detecting limit, reproducibility, and reversibility for optoelectronic NO2 sensors. By introducing mesostructured Ti3C2Tx MXene/ZnO nanorod hybrids, the sensor showed greatly enhanced optoelectronic and gas-sensing performance to ppb-leveled NO2 under UV illumination, with superior reversibility, sub-ppb detection limit, and high selectivity to NO2. The UV-activated NO2-sensing property was attributed to the hierarchical mesostructure and effective photogenerated carrier separation of Ti3C2Tx MXene, suggesting the promising application of MXene-metal oxide hybrids for high-performance UV-activated NO2 sensors at ambient temperature.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

Article Chemistry, Multidisciplinary

Self-Powered Monitoring of Ammonia Using an MXene/TiO2/Cellulose Nanofiber Heterojunction-Based Sensor Driven by an Electrospun Triboelectric Nanogenerator

Sagar Sardana et al.

Summary: This study developed a new type of gas sensor with self-driven capability and high efficiency. The sensor exhibited excellent detection performance for NH3, including high sensitivity and fast response time. Ultimately, a fully self-powered device for NH3 leakage detection was successfully assembled, advancing the development of intelligent gas sensing networks.

ACS SENSORS (2022)

Article Chemistry, Physical

Fabrication of SnO2-TiO2-Ti3C2Tx hybrids with multiple-type heterojunctions for enhanced gas sensing performance at room temperature

Xiaonan Wu et al.

Summary: The study focuses on the development of high-performance chemiresistive gas sensors at room temperature by combining MXene with SMO. The SnO2-TiO2-Ti3C2Tx heterostructure sensor exhibits excellent sensitivity, selectivity, and stability for NO2 detection. The improved sensing performance is attributed to the synergic effects of three phases, which form functionalized surfaces and multiple-type heterojunctions, resulting in enhanced electrical transduction function.

APPLIED SURFACE SCIENCE (2022)

Article Food Science & Technology

Recent advances in carbon nanomaterials-based electrochemical sensors for food azo dyes detection

Hassan Karimi-Maleh et al.

Summary: Azo dyes are widely used food colorants for their stability and affordability. However, they can have harmful impacts on living organs, necessitating the control of their content in food. Electro-analytical techniques have been favored for detecting azo dyes due to their sensitivity, selectivity, reproducibility, miniaturization, green nature, low cost, short sample preparation and detection time, and electrode modification capabilities. Carbon-based nanomaterials, such as carbon nanotubes (CNT) and graphene (Gr), have shown satisfactory results in the fabrication of electrochemical sensing systems for detecting the levels of azo dyes in various specimens.

FOOD AND CHEMICAL TOXICOLOGY (2022)

Article Chemistry, Multidisciplinary

Nanochemistry approach for the fabrication of Fe and N co-decorated biomass-derived activated carbon frameworks: a promising oxygen reduction reaction electrocatalyst in neutral media

Hassan Karimi-Maleh et al.

Summary: This study successfully improved the performance of the oxygen reduction reaction (ORR) in neutral media by tailoring a biomass-derived ORR electrocatalyst. The iron- and nitrogen-doped activated carbon framework showed superior ORR activity and long-term stability. The catalyst also demonstrated lower onset potential and better resistance to sulfur poisoning compared to the traditional platinum-based catalyst, paving the way for the development of low-cost nanocatalysts.

JOURNAL OF NANOSTRUCTURE IN CHEMISTRY (2022)

Article Nanoscience & Nanotechnology

Printed Chemiresistive In2O3 Nanoparticle-Based Sensors with ppb Detection of H2S Gas for Food Packaging

Ahmad M. Al Shboul et al.

Summary: This study developed cost-effective and disposable smart sensors using solution-printed nano-composites for monitoring packaged foods' degradation. The addition of CuAc enhanced the sensors' detection capability for H2S gas at lower concentrations, and the modified sensors showed remarkable selectivity and anti-humid properties under high humidity conditions.

ACS APPLIED NANO MATERIALS (2021)

Article Nanoscience & Nanotechnology

MXene Ti3C2Tx-Derived Nitrogen-Functionalized Heterophase TiO2 Homojunctions for Room-Temperature Trace Ammonia Gas Sensing

Yong Zhou et al.

Summary: In this study, nitrogen-functionalized heterophase TiO2 homojunctions (N-MXene) derived from MXene Ti3C2Tx were prepared and utilized as a sensing layer to detect trace NH3 gas at room temperature. The sensors exhibited improved detection limits and performance compared to existing MXene-involved reports, showing strong responses, sufficient recovery, and fast response/recovery speeds under humid conditions. The incorporation of nitrogen doping and TiO2 homojunctions played a key role in enhancing the performance of the sensors.

ACS APPLIED MATERIALS & INTERFACES (2021)

Article Environmental Sciences

Firefighter exposures to organic and inorganic gas emissions in emergency residential and industrial fires

Badr H. Alharbi et al.

Summary: The study found that firefighters are exposed to a variety of organic and inorganic gases during fire incidents, with higher levels of VOCs in residential fires possibly due to the materials present in homes. Exposure to inorganic gases is higher in industrial fires, with higher concentrations of hydrogen chloride. This research highlights the differences in gas emissions between industrial and residential fires.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Chemistry, Analytical

Flexible resistive NO2 gas sensor of three-dimensional crumpled MXene Ti3C2Tx/ZnO spheres for room temperature application

Zijie Yang et al.

Summary: In this study, a room-temperature flexible NO2 sensor based on three-dimensional crumpled MXene sphere prepared by ultrasonic spray pyrolysis technology is developed. The performance is further improved by designing 3D crumpled MXene sphere/ZnO composites sensitive electrode with high specific surface area and active sites. The excellent NO2 sensing properties are attributed to the high surface area, abundance of edges and defects, and the formation of MXene/ZnO p-n heterojunction.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

Review Chemistry, Multidisciplinary

Experimental and Theoretical Advances in MXene-Based Gas Sensors

Sadegh Mehdi Aghaei et al.

Summary: MXenes, two-dimensional transition metal carbides and nitrides, have gained attention in the field of gas sensing due to their remarkable features and ability to form nanohybrids with other nanomaterials, enhancing the efficiency of MXene-based gas-sensing devices.

ACS OMEGA (2021)

Article Materials Science, Multidisciplinary

rGO/Ti3C2Tx heterostructures for the efficient, room-temperature detection of multiple toxic gases

Nghe My Tran et al.

Summary: The novel rGO/Ti3C2Tx heterostructures were prepared via a simple ultrasonication method, showing sharp interface and increased surface area. These heterostructures exhibited excellent gas-sensing performance to NO2 and other toxic gases at room temperature, outperforming MoS2/Ti3C2Tx and g-C3N4/Ti3C2Tx heterostructures synthesized for comparison. Results indicate the potential for an efficient, multigas-detecting, and room-temperature-operable gas sensor.

MATERIALS CHEMISTRY AND PHYSICS (2021)

Article Materials Science, Multidisciplinary

Improvement of N-ZnO chemiresistive gas sensor toward lower detection limit of acetone and ethanol at low operating temperature

Aainaa Aqilah Baharuddin et al.

Summary: Nitrogen-doped ZnO (N-ZnO) chemiresistive gas sensor was fabricated to improve the lower limit of detection (LLOD), showing enhanced sensitivity towards acetone and ethanol compared to pure ZnO. The porous morphology was observed in both pure ZnO and N-ZnO. An interchangeable n-type and p-type behavior of N-ZnO upon exposure to different acetone concentrations was discussed.

MATERIALS LETTERS (2021)

Article Chemistry, Analytical

Highly sensitive and selective NO2 sensor of alkalized V2CTx MXene driven by interlayer swelling

Yajie Zhang et al.

Summary: Alkalized V2CTx MXene material, synthesized with abundant surface functional groups, suitable interlayer spacing, and appropriate Na+ intercalation, exhibits excellent gas sensing performance, especially high sensitivity and response to NO2.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

Article Chemistry, Analytical

Highly sensitive Co3O4 nanoparticles/MEMS NO2 gas sensor with the adsorption of the Au nanoparticles

Ting-Jen Hsueh et al.

Summary: This study successfully produced Co3O4 nanoparticles and developed an Au/Co3O4-NPs/MEMS NO2 gas sensor with high sensitivity to NO2 gas. Experimental results showed that the sensor had the greatest response to a 100-ppb NO2 gas concentration at the optimal operating temperature.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

Article Chemistry, Physical

Multifunctional poly(vinyl alcohol)/Ag nanofibers-based triboelectric nanogenerator for self-powered MXene/tungsten oxide nanohybrid NO2 gas sensor

Dongyue Wang et al.

Summary: In this paper, a PVA/Ag nanofibers-based TENG was developed for human respiration, movement, and harmful gas monitoring, achieving high voltage and power density outputs. By integrating a voltage regulator module, stable voltage output from the wind-driven TENG was achieved, providing a feasible solution for different wind conditions. A self-powered sensor system was developed by integrating TENGs and a gas sensor, offering a sustainable detection platform for tracking the source of harmful gases.

NANO ENERGY (2021)

Article Chemistry, Multidisciplinary

Discriminating BTX Molecules by the Nonselective Metal Oxide Sensor-Based Smart Sensing System

Hongyu Liu et al.

Summary: This study demonstrates a method of using temperature modulation of a single MOS sensor to recognize BTX molecules, by applying a rectangular heating waveform to activate the redox reaction at specific gas/oxide interfaces. Through signal preprocessing and data analysis methods, the features of BTX molecules can be extracted to improve recognition accuracy and stability.

ACS SENSORS (2021)

Article Chemistry, Analytical

Ultrathin Nb2CTx nanosheets-supported polyaniline nanocomposite: Enabling ultrasensitive NH3 detection

Si Wang et al.

Summary: A novel NH3 sensor based on 2D niobium carbide MXene-supported polyaniline nanocomposite was successfully developed for ultrasensitive NH3 detection under humidity atmosphere. The sensor exhibited superior selectivity, high sensitivity, low detection limit, and good long-term reliability towards NH3 with specific RH levels. The improved sensing properties were attributed to the interaction between PANI and Nb2CTx, which effectively reduced the influence of humidity on sensor performance.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

Article Chemistry, Multidisciplinary

Enhanced Blocking Effect: A New Strategy to Improve the NO2 Sensing Performance of Ti3C2Tx by γ-Poly(L-glutamic acid) Modification

Qiuni Zhao et al.

Summary: The study demonstrates the enhancement of gas sensing properties of Ti3C2Tx by gamma-PGA modification, resulting in improved response to NO2, faster response/recovery time, better reversibility, and repeatability. The improved gas sensing properties of the Ti3C2Tx/gamma-PGA sensor can be attributed to the enhancement of effective adsorption and the blocking effect assisted by water molecules.

ACS SENSORS (2021)

Review Materials Science, Multidisciplinary

MXene-based gas sensors

Radha Bhardwaj et al.

Summary: MXenes, a new class of 2D materials, have attracted massive attention in gas sensing applications due to their abundant active sites and outstanding stability. Research has focused on pristine MXenes and their nanocomposites for sensing gases, VOCs, and humidity, highlighting the synthesis procedures and properties involved in sensing performance.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

Article Chemistry, Multidisciplinary

MXene/WS2 hybrids for visible-light-activated NO2 sensing at room temperature

Yi Xia et al.

Summary: This study presents a room-temperature visible-light-activated optoelectronic NO2 sensor based on 2D/2D T3C2Tx/WS2 nanocomposites, which exhibited excellent performance and provides a promising method for fabricating high-performance gas sensors at room temperature based on 2D nanomaterials.

CHEMICAL COMMUNICATIONS (2021)

Article Chemistry, Physical

A review on two-dimensional materials for chemiresistive- and FET-type gas sensors

Jian Zhang et al.

Summary: This review discusses the recent developments in chemiresistive- and FET-type gas sensors based on 2D materials, including device structures, fabrication processes, influencing factors, and current applications. It also points out the future prospects and existing problems, aiming to improve the sensing performance of 2D material-based gas sensors for practical applications.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2021)

Article Materials Science, Multidisciplinary

SnS2/MXene derived TiO2 hybrid for ultra-fast room temperature NO2 gas sensing

Tianding Chen et al.

Summary: The study presents a new method for achieving ultra-fast NO2 gas sensing and recovery dynamics using a nanohybrid of SnS2 and MXene derived TiO2, achieving unprecedented levels of dynamic performance.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

Article Plant Sciences

Hydrogen Sulfide (H2S) Mitigates Arsenic (As)-Induced Toxicity in Pea (Pisum sativum L.) Plants by Regulating Osmoregulation, Antioxidant Defense System, Ascorbate Glutathione Cycle and Glyoxalase System

Abdulaziz Abdullah Alsahli et al.

Summary: This study demonstrates that exogenous H2S significantly reduces arsenic accumulation in pea plants and promotes growth and photosynthetic parameters. H2S supply also reduces H2O2 and MDA levels in pea plants, as well as electrolyte leakage. Additionally, H2S enhances the activities of antioxidant enzymes and the AsA-GSH cycle enzymes, increasing levels of ascorbate, glutathione, and methylglyoxal.

JOURNAL OF PLANT GROWTH REGULATION (2021)

Article Nanoscience & Nanotechnology

Room-Temperature, Highly Durable Ti3C2Tx MXene/Graphene Hybrid Fibers for NH3 Gas Sensing

Sang Hoon Lee et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

Article Chemistry, Analytical

Visible-light activated room temperature NO2 sensing of SnS2 nanosheets based chemiresistive sensors

Ding Gu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

Article Chemistry, Analytical

A transparent ZnO nanowire MEMS gas sensor prepared by an ITO micro heater

Ting-Jen Hsueh et al.

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Nanohybrids of a MXene and transition metal dichalcogenide for selective detection of volatile organic compounds

Winston Yenyu Chen et al.

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Selective Toluene Detection with Mo2CTx MXene at Room Temperature

Wenzhe Guo et al.

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Functional metal-organic frameworks as effective sensors of gases and volatile compounds

Hai-Yang Li et al.

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Nitrogen Dioxide Gas Sensor Based on Liquid-Phase-Exfoliated Black Phosphorus Nanosheets

Tianding Chen et al.

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Improvement of Gas and Humidity Sensing Properties of Organ-like MXene by Alkaline Treatment

Zijie Yang et al.

ACS SENSORS (2019)

Article Nanoscience & Nanotechnology

Sc2CO2 and Mn-doped Sc2CO2 as gas sensor materials to NO and CO: A first-principles study

Danxi Yang et al.

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES (2019)

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Enhanced ammonia response of Ti3C2Tx nanosheets supported by TiO2 nanoparticles at room temperature

Huiling Tai et al.

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A novel highly selective and sensitive NH3 gas sensor based on monolayer Hf2CO

Yiran Wang et al.

APPLIED SURFACE SCIENCE (2019)

Article Chemistry, Physical

Titanium Carbide MXene as NH3 Sensor: Realistic First-Principles Study

Pedram Khakbaz et al.

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Advances in chemiresistive sensors for acetone gas detection

Aainaa Aqilah Baharuddin et al.

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING (2019)

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Ethanol sensing behavior of Pd-nanoparticles decorated ZnO-nanorod based chemiresistive gas sensors

P. Cao et al.

SENSORS AND ACTUATORS B-CHEMICAL (2019)

Article Chemistry, Multidisciplinary

Ti3C2 MXene-Based Sensors with High Selectivity for NH3 Detection at Room Temperature

Meng Wu et al.

ACS SENSORS (2019)

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Effect of Ti3AlC2 MAX Phase on Structure and Properties of Resultant Ti3C2Tx MXene

Christopher E. Shuck et al.

ACS APPLIED NANO MATERIALS (2019)

Review Materials Science, Multidisciplinary

Tunable nanofibril heterojunctions for controlling interfacial charge transfer in chemiresistive gas sensors

Shuai Chen et al.

JOURNAL OF MATERIALS CHEMISTRY C (2019)

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Metallic Ti3C2TX MXene Gas Sensors with Ultrahigh Signal-to-Noise Ratio

Seon Joon Kim et al.

ACS NANO (2018)

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Highly sensitive chemiresistive H2S gas sensor based on graphene decorated with Ag nanoparticles and charged impurities

Oleksandr Ovsianytskyi et al.

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A flexible VOCs sensor based on a 3D Mxene framework with a high sensing performance

Wenjing Yuan et al.

JOURNAL OF MATERIALS CHEMISTRY A (2018)

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2D metal carbides and nitrides (MXenes) for energy storage

Babak Anasori et al.

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Room Temperature Gas Sensing of Two-Dimensional Titanium Carbide (MXene)

Eunji Lee et al.

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Guidelines for Synthesis and Processing of Two-Dimensional Titanium Carbide (Ti3C2TX MXene)

Mohamed Alhabeb et al.

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MXenes: Reusable materials for NH3 sensor or capturer by controlling the charge injection

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UV-assisted room-temperature chemiresistive NO2 sensor based on TiO2 thin film

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