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Article
Chemistry, Physical
Haineng Bai et al.
Summary: A high-performance and cost-effective NO2 gas sensor operating at room temperature was achieved by depositing Pd nanoparticles and rGO nanosheets onto synthesized SnO2 nanospheres. The sensor exhibited unique porous structure, high selectivity, and fast response, with a theoretical detection limit of 37.8 ppb.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Chao Fan et al.
Summary: In this work, Ti3C2Tx-ZnO nanosheet hybrids were fabricated and demonstrated to have improved gas-sensing performance. The hybrids exhibited short recovery and response times, high sensitivity, and selectivity. The sensor also showed excellent anti-humidity properties and reproducibility.
Article
Chemistry, Analytical
Hairui Fang et al.
Summary: Composite sensing materials with complex hierarchical structures exhibit better performance in chemiresistive sensors due to rich defects induced by the hierarchical structures. The hierarchical structure was controllably constructed by adjusting the composition of CuO and Co3O4, promoting the enrichment of lattice oxygen confirmed by XPS, leading to enhanced NO2 sensing performance. The improved sensing performances are attributed to the rich lattice oxygen with chemical activity induced by the hierarchical structure, providing new ideas for the synthesis of high-performance composite sensing materials.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Yaqing Hu et al.
Summary: A NO2 gas sensor based on NiCo2O4/-WO3 nanocomposite was synthesized with outstanding sensing performance. The sensor showed higher response, shorter response/recovery time, good linearity, stable repeatability and brilliant selectivity at 150 degrees C. The enhanced gas sensitivity of the sensor may be due to the unique microstructure of NiCo2O4/-WO3 and the p-n heterojunction formed between the two materials.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Ayesha Zaheer et al.
Summary: Due to their high energy storage capacity, two-dimensional transition metal carbides (MXenes) have been widely studied as a promising candidate for supercapacitors. In this study, the synthesis, computational and electrochemical properties of pristine and nickel-doped niobium-carbide (Nb2C) MXenes were reported. The introduction of nickel increased the total density of states (TDOS) and showed a continuous density of states (DOS) pattern, indicating coupling between nickel and pristine MXene. The Ni-doped sample exhibited a significant capacitive performance and a high capacitance retention up to 10,000 cycles.
Article
Materials Science, Multidisciplinary
Haineng Bai et al.
Summary: Pd-CuO/rGO sensor with a nanowire hierarchical structure was successfully synthesized using a hydrothermal strategy. The sensor showed excellent features compared to other sensors for detecting NO2 gas at room temperature, with an ultra-high response of 64.2 towards 100 ppm NO2 gas and a response/recovery time of 10.7/9.2 s towards 10 ppm NO2 gas. The sensor also had a low limit of detection of 50 ppb.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Xiaojie Zhu et al.
Summary: This study successfully addresses the trade-off between gas-sensing performance and anti-humidity ability of chemiresistive gas sensors by preparing hydrophobic inorganic CeO2/SnO2 heterostructure films. The sensors based on these films demonstrate excellent gas-sensing performance towards TEA and promising anti-humidity ability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Sahil Gasso et al.
Summary: This study synthesized MXene-based SnO2 heterostructures for room-temperature NO2 detection. The optimized SnO2/MXene heterostructures exhibited high response and short response and recovery time towards 30ppb NO2 at room temperature. The sensor also showed high selectivity, sensitivity, repeatability, and stable sensing response under humid conditions.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Miao Liu et al.
Summary: In this article, a gas sensor based on metal organic frameworks (MOFs) derived In2O3/Ti3C2Tx MXene was reported. The In2O3 microstructures were successfully anchored on the surface of Ti3C2Tx MXene, resulting in a sensor with excellent performance. The experimental results showed that the sensor exhibited high response rate and low detection limit towards NH3 gas, and demonstrated excellent linear response, fast response/recovery rate, outstanding selectivity, and stability. This research is expected to be an important reference for the design of high-performance ammonia gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Ting-Jen Hsueh et al.
Summary: This study produced CuO nanowires using RF sputtering and integrated them into a MEMS structure to form a gas sensor. XRD analysis showed preferred orientation of the CuO NWs. Long term testing demonstrated the sensor's high selectivity to NO2 and stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Zhen Yuan et al.
Summary: In this study, gold-loaded tellurium nanobelts were synthesized through a hydrothermal process, and the resulting Au@Te sensor demonstrated rapid response, high sensitivity, good repeatability, and selectivity for the detection of NO2. The long-term stability of the sensor was also evaluated, with stable response observed over a period of 28 days.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Lixia Sun et al.
Summary: The composites of alpha-Fe2O3/Co3O4 heterojunction decorated with rGO showed improved gas-sensing properties, with high response rates towards NO2 and faster response/recovery times compared to pure alpha-Fe2O3 and binary composites. The enhanced sensing mechanism is attributed to the synergistic effects of the p-n heterojunctions and rGO modification, providing a new approach for designing high-performance NO2 sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Haijie Cai et al.
Summary: This study developed a low-cost and integrated MEMS HCHO sensor based on SnO2 multishell hollow microspheres, exhibiting high sensitivity and an ultralow detection limit. The sensor's excellent performance is attributed to its unique multishell hollow structure and synergistic catalytic effects of bimetal PdPt.
Article
Nanoscience & Nanotechnology
Hang Wang et al.
Summary: In this study, single-crystalline As-doped In2O3 nanowires were successfully synthesized by chemical vapor deposition at a low growth temperature. The obtained nanowires showed a narrow diameter distribution and a preferential growth direction. Gas sensing experiments demonstrated diameter dependent response, indicating the potential applications of these nanowires in various technologies.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Na Wang et al.
Summary: Three-dimensional hierarchical Cu2O-CuO microflowers assembled by nanorods were synthesized through an environmentally friendly hydrothermal route. The Cu2O-CuO microflowers-2 sensor exhibits excellent selectivity, repeatability, and long-term stability to NO2, with fast response and recovery time, even under high humidity conditions. Such superior sensing properties can be attributed to its unique structural advantages, more surface adsorbed oxygen, and the synergistic influence between the two-phase coexistence.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Fuqiang Guo et al.
Summary: A novel mesoporous heterostructure of CdS/CuO/rGO composites was synthesized using a green and ultra-low-cost hydrothermal method. The sensor showed significantly higher response, lower limit of detection, excellent reversibility, selectivity, and stability. The heterojunction formed between CdS/CuO/rGO composites enhanced the adsorption capacity of the target gas, improving the sensor performance.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Haineng Bai et al.
Summary: This study successfully realizes a room-temperature NO2 gas sensor based on CuO/MoS2 heterojunctions with excellent sensitivity and fast response/recovery speeds. The sensor exhibits remarkable response and short response/recovery time to 10 ppm NO2 at room temperature under red light illumination, and has low detection limit, excellent reversibility, and high selectivity to NO2.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Environmental
Qui Thanh Hoai Ta et al.
Summary: Si@TiO2/Ti3C2Tx heterostructures were synthesized in situ from Ti3AlC2 MAX phase by combining high-temperature Si diffusion and HF etching. The optimal heterostructure showed semiconductor behavior with enhanced surface area due to the distribution of small TiO2 particles over Ti3C2Tx MXene. The heterostructure exhibited excellent 2,4-Dinitrophenol photodegradation and room-temperature NO2-sensing capabilities, with the photocatalytic degradation attributed to broad light absorption and efficient carrier separation by Schottky contact. Density-functional theory calculations suggested that Si atoms could facilitate NO2 adsorption, highlighting the multi-functionality potential of Si@TiO2/Ti3C2Tx heterostructure.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Hanie Hashtroudi et al.
Summary: A novel microwave assisted 2D hybrid material based on rGO doped with Pd nanoparticles was synthesized for investigating its hydrogen sensing performance. The material characterization confirmed uniform distribution of Pd NPs on the porous structure of rGO nanosheets, and the fundamental hydrogen sensing mechanism as well as recovery enhancement by UV light were studied. This work offers an environmentally friendly synthesis approach for hydrogen sensing with excellent control over experimental parameters, which can lead to the fabrication of a highly selective and sensitive hydrogen sensor.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Analytical
Tingting He et al.
Summary: The 2D MXene/SnO2 heterojunction-based chemiresistive sensor shows excellent sensitivity and selectivity to NH3, with the sensing properties attributed to MXene's unique adsorption ability and conductivity, and the Fermi level difference between MXene and SnO2 driving charge transfer to enhance sensitivity. Additionally, a wireless sensor utilizing low-temperature cofired ceramic technique demonstrates fast response/recovery speeds and stable response to ammonia concentrations, showing promising practical application potential.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Joon-Young Kang et al.
Summary: The study demonstrates the heterogeneous sensitization of nanocatalysts using Pt and ZnO nanoparticles (NPs) on porous reduced graphene oxides (Pt_ZnO/PRGO) driven by a metal-organic framework (MOF)-templated synthesis and subsequent pyrolysis. Pt_ZnO/PRGO showed improved NO2 sensing properties with increased reaction sites and controllable size of ZnO NPs, exhibiting reversible reaction kinetics. The potential applications of MOF-derived Pt_ZnO/PRGO in wearable chemical sensors were showcased, highlighting excellent mechanical stability and reliable response.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Haineng Bai et al.
Summary: In this work, a low-cost and ecofriendly solvothermal strategy was used to prepare gas-sensing materials, resulting in the fabrication of a gas sensor based on Sb2O3/SnO2 nanospheres with exceptional response behavior to H-2 gas and stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Zijing Wang et al.
Summary: The nanocomposite SnO-SnO2/Ti3C2Tx sensor, synthesized by a one-step hydrothermal method, showed improved acetone gas sensing response at room temperature.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Haineng Bai et al.
Summary: A gas sensor utilizing CuO/rGO nanoflakes was successfully developed for detecting ppb-level NO2 gas at room temperature. The sensor demonstrated ultrahigh response behavior, fast response time, reliability, and long-term stability. The improved gas-sensing response was attributed to synergistic effects between CuO and rGO.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Haineng Bai et al.
Summary: Novel mesoporous heterostructures composed of CdS, PbS, and SnO2 were synthesized via a green and facile treatment, showing enhanced gas-sensing properties for H-2 gas detection. The CdS/PbS/SnO2 sensor exhibited fast response/recovery time, ultralow detection limit, outstanding selectivity, reliable reversibility, and long-term stability, mainly attributed to its large surface-to-volume ratio and numerous heterojunctions for accelerated carrier transfer. This work suggests great potential for ppb-level H-2 gas monitoring in extreme environments.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Haoxuan He et al.
Summary: A flexible H2S gas-sensing device operated at room temperature based on CuO/TiO2 membranes showed notable detection sensitivity and durability. The innovative design paves the way for sensitive gas sensing on a universal platform.
Article
Chemistry, Physical
Zhijie Zhang et al.
Summary: A novel MXene/GaAs heterojunction solar cell with high efficiency and excellent stability was achieved via a one-step method. The high work function of transparent MXene and enhanced interfacial interaction with GaAs contribute to the formation of a high-quality Schottky diode, resulting in a record initial power conversion efficiency of 9.69%. With the deposition of a ZnS/MgF2 composite coating, the MXene/GaAs solar cell exhibited an average power conversion efficiency of 12.5% over 30 days in air, showing great promise for sustainable development.
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(2020)
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(2020)
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(2019)
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(2019)
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SENSORS AND ACTUATORS B-CHEMICAL
(2017)
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Yazi Liu et al.
CHINESE JOURNAL OF CATALYSIS
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Qi Xu et al.
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JOURNAL OF PHYSICAL CHEMISTRY C
(2012)
