NixCu3_ x(HHTP)2 decorated poly-pyrrole porous nanocomposites for highly selective and stable hydrogen sulfide sensing at room temperature

Article Materials Science, Multidisciplinary

ZnO/PANI nanoflake arrays sensor for ultra-low concentration and rapid detection of NO2 at room temperature

Qiu-Yue Zheng et al.

Summary: In this study, a NO2 sensor with good sensing performance was developed using n-p heterostructure nanocomposites. The sensor showed high sensitivity to NO2 at room temperature, with low detection limit and fast recovery time.

RARE METALS (2023)

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Article Engineering, Environmental

Cu/Co bimetallic conductive MOFs: Electronic modulation for enhanced nitrate reduction to ammonia

Peng Liu et al.

Summary: Electrochemical reduction of nitrate to ammonia using new-type electrocatalysts, such as bimetallic cMOFs, shows high activity and promising potential. The synergy effect between different types of single-metal sites in Cu1Co1HHTP enhances the electrocatalytic activity, resulting in a high NH3 yield rate and Faradic efficiency. The Co sites affect the electron structure of Cu sites and decrease the energy barrier in the NO3RR process. This bimetallic c-MOFs strategy innovates the design concept of next-generation catalyst and opens up new opportunities for investigating single-metal-atom catalytic mechanisms.

CHEMICAL ENGINEERING JOURNAL (2023)

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Article Materials Science, Multidisciplinary

Er2O3 nanospheres with fast response to humidity for non-contact sensing

Yi-Fan Jiang et al.

Summary: In this study, Er2O3 nanospheres were prepared by one-step solvothermal and high-temperature calcined method, and the effect of calcination temperatures on its humidity sensing characteristics was investigated. The Er2O3-600 sample exhibited favorable humidity sensing performance, which could be potentially applied in human-machine interaction.

RARE METALS (2023)

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Article Chemistry, Multidisciplinary

Two-dimensional Aluminum Oxide Nanosheets Decorated with Palladium Oxide Nanodots for Highly Stable and Selective Hydrogen Sensing

Xiaxia Xing et al.

Summary: A hydrogen sensing prototype with high stability and selectivity has been achieved by combining template synthesis, photochemical deposition, and oxidation. The sensor shows excellent long-term stability, high selectivity against interfering gases, and outstanding stability against humidity at 300 degrees C. It is capable of detecting hydrogen in a wide range of concentrations.

SMALL (2023)

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Article Chemistry, Analytical

Palladium and cerium oxide hollow strings of pearls for stable and wide-concentration-range hydrogen sensing at room temperature

Yingying Tian et al.

Summary: By synthesizing Pd/CeO2 HSPs materials, the hollow and porous structure provides sufficiently permeable pathways and adsorption sites for H2 molecules, resulting in outstanding sensing response to 0.01-30 v/v% H2 gas. The material also exhibits high repeatability and stability upon repeated exposure to 1 v/v% H2 at room temperature. This research provides a reliable H2 sensor prototype for detecting H2 leakage.

SENSORS AND ACTUATORS B-CHEMICAL (2023)

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Article Engineering, Environmental

High performance langasite based SAW NO2 gas sensor using 2D g-C3N4@TiO2 hybrid nanocomposite

Kedhareswara Sairam Pasupuleti et al.

Summary: In this study, a high-performance langasite-based surface acoustic wave (SAW) gas sensor for nitrogen dioxide (NO2) at room temperature was developed. The sensor exhibited excellent selectivity, sensitivity, and response time, as well as stability in various relative humidity conditions. The integration of 2D materials with metal oxides shows promise for environmental protection.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Flexible Cu3(HHTP)2 MOF Membranes for Gas Sensing Application at Room Temperature

Ashraf Ali et al.

Summary: The study introduces a novel mixed matrix membrane (Cu-MOF/PVA/IL sensor) with high flexibility and significant sensitivity for gas sensing applications. The sensor showed excellent performance in detecting H2S gas with a detection limit of 1 ppm at room temperature, along with great repeatability, long-term stability, and selectivity. The sensor also features high flexibility, low cost, low-power consumption, and easy fabrication technique, making it a potential candidate for practical industrial applications.

NANOMATERIALS (2022)

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Article Chemistry, Multidisciplinary

Nanocomposite-Decorated Filter Paper as a Twistable and Water-Tolerant Sensor for Selective Detection of 5 ppb-60 v/v% Ammonia

Lingling Du et al.

Summary: In this study, twistable and water-tolerant paper-based sensors integrated over surgical masks were developed for NH3 detection. The sensors exhibited high sensitivity, selectivity, stability, and humidity tolerance. They could detect NH3 in a wide concentration range and perform well even when immersed in water. The accuracy of the sensors in detecting exhaled NH3, environmental NH3 pollution, and industrial NH3 leakage was validated using ion chromatography.

ACS SENSORS (2022)

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Article Chemistry, Multidisciplinary

Fabrication of Multifunctional Electronic Textiles Using Oxidative Restructuring of Copper into a Cu-Based Metal-Organic Framework

Aileen M. Eagleton et al.

Summary: This paper presents a novel synthetic approach to convert zero-valent copper metal into a conductive two-dimensional layered metal-organic framework (MOF). It demonstrates the patterning of Cu3(HHTP)2 onto flexible and porous substrates with microscale spatial resolution. The resulting conductive textiles enable simultaneous detection and detoxification of nitric oxide and hydrogen sulfide, as well as filtration capabilities of H2S. These findings pave the way for the development of robust electronic textiles with multifunctional performance characteristics.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Analytical

Bimetallic MOFs-derived core-shell structured mesoporous Sn-doped NiO for conductometric ppb-level xylene gas sensors

Qi Yu et al.

Summary: Mesoporous metal oxides have shown great potential in detecting volatile organic compounds (VOCs) pollutants in air as sensitive materials for semiconductor gas sensors. The core-shell structured mesoporous Sn-doped NiO derived from the combination strategy of hydrothermal and ion-exchange processes has been successfully synthesized for high-performance xylene gas sensors, exhibiting high sensitivity, excellent selectivity, low detection limit, rapid recovery kinetic, and good long-term stability.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

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Article Chemistry, Analytical

ZIF-8 micro-polyhedron MOF-transformed ZnO/ZnFe2O4 nanosheets for highly selective detection of ppb-level isoprene

Xiaxia Xing et al.

Summary: A highly selective and ppb-level isoprene sensing technology has been developed using ZnO/ZnFe2O4 nanosheets. The technology shows a higher response to 1 ppm isoprene than ZnO micro-polyhedrons, and has a low detection limit of 2 ppb and high selectivity even in the presence of multiple interfering gases. This research has potential in upcoming intelligent medical diagnosis.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

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Article Engineering, Electrical & Electronic

Room temperature H2S gas sensing performance of VO2(A) nanowires with high aspect ratio

Jiran Liang et al.

Summary: This study successfully prepared VO2(A) nanowires with a high aspect ratio and applied them for room-temperature detection of H2S gas. The nanowires exhibited excellent gas-sensing performance, attributed to their high surface-area-to-volume ratio. The gas sensing mechanism was further explored through density functional theory calculations.

SENSORS AND ACTUATORS A-PHYSICAL (2022)

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Article Chemistry, Analytical

Bimetallic AuPt alloy nanoparticles decorated on ZnO nanowires towards efficient and selective H2S gas sensing

Yiping Liu et al.

Summary: The development of high-performance H2S sensor is crucial for monitoring H2S in the living environment. The article introduces a sensor based on AuPt@ZnO nanowires, which has high sensitivity, improved selectivity, rapid response-recovery process, and long-term stability. This sensor has great potential for application.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

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Article Chemistry, Multidisciplinary

Heterostructured α-Fe2O3@ZnO@ZIF-8 Core-Shell Nanowires for a Highly Selective MEMS-Based ppb-Level H2S Gas Sensor System

Li-Yuan Zhu et al.

Summary: This article presents a highly selective and sensitive H2S sensor. By synthesizing heterostructured core-shell nanowires, the response speed, stability, and detection limit of the sensor have been significantly improved. The sensor system also has low power consumption and shows great potential for application in smart cities.

SMALL (2022)

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Article Engineering, Environmental

Interface-Sensitized Chemiresistor: Integrated Conductive and Porous Metal-Organic Frameworks

Sujee Cho et al.

Summary: Research has reported composite materials of two different MOFs with different dimensions and functions, forming a core-shell structure, showing synergistically enhanced sensing performance in detecting toxic gas H2S. Multiple changes have been proposed to play a critical role in achieving synergistic chemiresistive sensing through experimental and computational studies.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Engineering, Environmental

Advances in In2O3-based materials for the development of hydrogen sulfide sensors

Vanish Kumar et al.

Summary: The article reviews the potential of In2O3-based materials for sensing H2S gas, emphasizing their sensing performance and operational temperature conditions. It also discusses sensing mechanisms, synthesis procedures, and future prospects, while carefully evaluating the best option for In2O3-based sensing method based on their performance on a parallel basis.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Nanoscience & Nanotechnology

Conductive Stimuli-Responsive Coordination Network Linked with Bismuth for Chemiresistive Gas Sensing

Aylin Aykanat et al.

Summary: This paper presents the design, synthesis, characterization, and performance of a novel semiconductive crystalline coordination network utilizing HHTP ligands interconnected with bismuth ions for chemiresistive gas sensing. Bi(HHTP) exhibits two distinct structures and good electrical conductivity, enabling detection of gases and volatile organic compounds, with unique responses to VOCs at ppm concentrations. Spectroscopic analysis suggests the sensing mechanisms involve a complex combination of steric, electronic, and protic properties of the targeted analytes.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Highly Selective and Sensitive Detection of Volatile Sulfur Compounds by Ionically Conductive Metal-Organic Frameworks

Li Li et al.

Summary: Highly selective chemical sensors with negligible responses to other interference vapors are developed using ionically conductive MOFs as sensing materials. Through the modulation of metal nodes and organic ligands, these sensors achieve highly selective detection toward volatile sulfur compounds.

ADVANCED MATERIALS (2021)

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Review Chemistry, Inorganic & Nuclear

Metal-organic frameworks and their derivatives for electrically-transduced gas sensors

Ming-Shui Yao et al.

Summary: Metal-organic frameworks (MOFs) and the MOF derived materials have broad application prospects in electrically-transduced gas sensors, but face challenges in usability. Recent research focuses on five primary types of electrically-transduced gas sensors, providing insights on basic principles, material design, sensor performance, and future directions.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Chemistry, Analytical

Binder-free CuO nanoneedle arrays based tube-type sensor for H2S gas sensing

Qiang Hu et al.

Summary: CuO nanoneedle arrays sensor prepared without binders exhibit high specific surface area and decent response, but sensitive to humidity. It also shows good selectivity and stability to low concentration of H2S.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Facile synthesis of metal-organic framework-derived ZnO/CuO nanocomposites for highly sensitive and selective H2S gas sensing

Tan Le Hoang Doan et al.

Summary: ZnO/CuO nanocomposites derived from a metal-organic framework showed excellent gas sensing performance on low concentrations of H2S gas, with high response, selectivity, and repeatability. This was attributed to the texture coefficients of the ZnO and CuO phase compositions, leading to the formation of a high number of p-n junctions and quantum confinement effects, as well as the lower binding energy of H2S.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Physical

A Tandem Electrocatalysis of Sulfur Reduction by Bimetal 2D MOFs

Ruijin Meng et al.

Summary: The study reveals that using catalysts synthesized with 2D MOF nanosheets with different metal centers can optimize the performance of Li-S batteries, where Ni-MOF effectively catalyzes the reduction of long-chain polysulfides, and Co-MOF benefits the deposition kinetics of Li2S. Furthermore, the bimetal CoNi-MOF exhibits synergistic sulfur electrocatalytic activity, reducing reaction activation energies, enhancing reaction rates, and effectively inhibiting the shuttle effect.

ADVANCED ENERGY MATERIALS (2021)

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Article Chemistry, Analytical

High selectivity of Ag-doped Fe2O3 hollow nanofibers in H2S detection at room operating temperature

Chengyu Yang et al.

Summary: This paper reported a simple method to synthesize Ag-doped Fe2O3 hollow nanofibers by electrospinning, and studied their application as gas sensors. The results showed that the material exhibited high response, selectivity, and sensitivity to H2S at room temperature, making it a promising sensing material for future applications.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Multidisciplinary

A highly selective electron affinity facilitated H2S sensor: the marriage of tris(keto-hydrazone) and an organic field-effect transistor

Saravanan Yuvaraja et al.

Summary: The combination of a polymermonomer heterostructure derived from a CP and a newly reported monomer has shown unprecedented sensitivity and high selectivity towards H2S gas, paving the way for futuristic gas sensors in a wide range of applications.

MATERIALS HORIZONS (2021)

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Article Chemistry, Analytical