Related references
Note: Only part of the references are listed.
Article
Chemistry, Analytical
Kelin Hu et al.
Summary: In this study, CuO-loaded In2O3/CeO2 nanofiber heterojunctions were designed and prepared for trace CO gas detection. The materials were characterized, and the morphology of the nanofibers and the structure of the p-n heterojunctions were confirmed. The effect of morphology and structure on gas sensing performance was analyzed. Gas sensing tests showed that the sensor had a low optimum operating temperature of 70 degrees C, and a limit of detection as low as 50 ppb. The sensor exhibited a sensitive and linear response for CO gas concentrations ranging from 50 ppb to 10 ppm. Selectivity, humidity response, and long-term stability of the gas sensors were also tested. A mechanism for the enhanced CO gas sensing performance was proposed based on the structure of the materials.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Review
Chemistry, Multidisciplinary
Alessandro Paghi et al.
Summary: The synthesis and understanding of 1D and 2D materials have advanced rapidly, leading to their incorporation into sensor architectures, specifically field effect transistors (FETs), for gas and vapor monitoring. However, challenges remain in fabricating 1D and 2D FET gas sensors for real-field applications, primarily in terms of properties, synthesis, and integration of these materials into the transistor structure. This review paper comprehensively analyzes the materials used in FET gas sensors, including 1D materials (metal oxide semiconductors, silicon nanowires, carbon nanotubes) and 2D materials (graphene, transition metal dichalcogenides, phosphorene), and explores how material synthesis, surface functionalization, and transistor fabrication influence the electrical and sensing properties of these devices. Additionally, the strengths and weaknesses of 1D and 2D FETs for gas and vapor sensing applications are discussed, along with future directions.
Review
Chemistry, Physical
Rinku Paul et al.
Summary: Current research focuses on developing cost-effective high-performance gas sensors at low operating temperature. Shortcomings of semiconducting metal oxides (SMOs)-based high operating temperature sensors include high power consumption, high manufacturing cost, detonation risk for explosive gas detection, and lack of long-term stability. This review highlights recent advancements in SMOs-based heterostructures for room temperature gas sensors, exploring the effects of different nano-junctions, porosity, quantum dots, and distinct facets. Incorporating high conductive materials such as carbon nanotubes, graphene, and activated carbon in SMOs can reduce sensor resistance and operating temperature. Various sensing mechanisms, such as heterojunction formation and Knudsen diffusion model, have been elucidated for high sensing performance gas sensors. Finally, future prospects for room temperature gas sensors are addressed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Ada Raucci et al.
Summary: This study compares the performance of two bacterial polymers with a commonly used polyester material and evaluates their feasibility in the (bio)electroanalytical field. The results show that these novel materials exhibit similar detection limits and repeatability to polyester in the development of iron ion and organophosphate pesticide sensing platforms, providing a starting point for the development of sustainable platforms for decentralized applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Multidisciplinary
Katarzyna Drozdowska et al.
Summary: Extending knowledge of low-dimensional van der Waals materials is crucial for developing innovative electronic and optoelectronic devices. Transition metal trichalcogenides with tunable band gaps and anisotropic conductivity show potential for gate tunability and photoreactivity, making them suitable for light-enhanced gas sensors.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Dongyue Wang et al.
Summary: This paper reports a benzene sensor based on Pd-doped CoTiO3/TiO2 nanocomposite, with improved gas sensing performance. The sensor demonstrated remarkable benzene sensing properties, attributed to the formation of CoTiO3/TiO2 p-n heterojunction and catalytic action of Pd. The unique advantage of Pd-CTT nanocomposite for benzene sensing was highlighted in this work.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Optics
Zhang Lewen et al.
Summary: This article introduces a CO sensor based on infrared absorption spectroscopy for measuring exhaust gases in furnace pipelines. The sensor has high sensitivity and linear response, and can be used to analyze industrial production processes. It has great applicability and potential for use in exhaust pipelines and combustion control systems.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Chemistry, Analytical
Mariusz Rogulski et al.
Summary: The study investigates the measurement data quality of NO2-B43F Alphasense sensors and finds that without using sophisticated correction methods, the measured air pollution concentrations may be greater than their actual values, especially in high temperatures. However, applying the proposed mathematical correction functions significantly reduces errors and eliminates negative measurement values.
Article
Nanoscience & Nanotechnology
Kelin Hu et al.
Summary: A hydrogen sensing structure composed of Pd-doped In2O3/CeO2 nanofibers was synthesized, showing unexpectedly high hydrogen sensing properties with a response (R-a/R-g) of 16,411 to 100 ppm H-2 gas at a temperature of only 100 degrees C. The sensor also exhibits absolute selectivity for hydrogen gas. Pd doping catalyzes the metallization of the In2O3 surface, suggesting that the ultrahigh sensitivity is influenced by the metallization of In2O3 homojunctions. A dual mechanism for hydrogen sensing is proposed, which contributes to the understanding and design of gas sensing materials.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Duo Chen et al.
Summary: A novel sensor based on Schottky junction inducing avalanche breakdown effect in TiO2-Sn3O4 nanoheterojunctions is demonstrated for high-sensitivity NO2 gas sensing at room temperature. The Schottky contact functions as a gate to trigger the avalanche breakdown effect, and the detection can be achieved by tuning the Schottky barrier height and utilizing surface chemisorption of the gas and device bias.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Bingcai Chen et al.
Summary: This study successfully designs and synthesizes a sensor for detecting trace CO at low temperature by introducing In2O3 nanocubes and MOF-derived Co3O4 nanosheets to form a p-n heterojunction. The sensor shows good selectivity, ultralow detection limitation, high response, and fast response/recovery time.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Dongyue Wang et al.
Summary: This paper introduces a high-efficiency CO gas sensor based on ZnO/SnSe2 composite film, and studies its structural characteristics, response performance, and sensing mechanism. The study found that the ZnO/SnSe2 sensor with a loading rate of 25% SnSe2 showed the highest response performance, and UV light can improve the gas-sensing characteristics of the sensor.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Dongyue Wang et al.
Summary: A wave-driven liquid-solid triboelectric nanogenerator (TENG) was developed to construct a self-powered sensing system for marine environmental monitoring. The TENG harvested wave energy and powered a SO2 gas sensor with excellent response. The temperature and humidity error correction of the sensor was achieved through data integration and processing.
Article
Chemistry, Physical
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.
Review
Materials Science, Multidisciplinary
Sunil Mahajan et al.
APPLIED MATERIALS TODAY
(2020)
Article
Chemistry, Physical
H. Z. Jooya et al.
Article
Multidisciplinary Sciences
Yi-Ting Peng et al.
SCIENTIFIC REPORTS
(2017)
Article
Critical Care Medicine
Jorge A. Guzman
CRITICAL CARE CLINICS
(2012)
Article
Chemistry, Physical
Chan-Ho Yang et al.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2012)
Article
Engineering, Environmental
Wei Luo et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2010)
Article
Chemistry, Analytical
S. Santra et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2010)
Article
Nanoscience & Nanotechnology
Shoou-Jinn Chang et al.
Article
Chemistry, Analytical
Noboru Yamazoe et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2008)
Article
Chemistry, Analytical
T. V. Belysheva et al.
JOURNAL OF ANALYTICAL CHEMISTRY
(2006)