4.6 Article

Luminescent Y2Zr2O7 for Ultrasensitive Detection of Volatile Organic Compounds Driven by Oxygen Vacancies

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

Pyrochlore cerium stannate (Ce2Sn2O7) for highly sensitive NO2 gas sensing at room temperature

Mathankumar Ganesan et al.

Summary: Gas sensing at low temperatures is a challenging task. Pyrochlore-based oxides, particularly the pyrochlore-Ce2Sn2O7 structure prepared through a hydrothermal method, have shown outstanding selectivity, response time, recovery time, repeatability, and stability for NO2 gas molecules. This excellent gas-sensing performance can be attributed to the high specific surface area, presence of oxygen vacancies, and surface-adsorbed oxygen molecules.

APPLIED SURFACE SCIENCE (2023)

Article Materials Science, Ceramics

Enhancement of dual-mode emission and temperature sensing performance in Y2Zr2O7: Er3+ nano phosphor by incorporation of lithium ions

Amalesh Kumar et al.

Summary: The effect of Li+ doping on the photoluminescence emission intensity and temperature sensing performance of Y2Zr2O7(YZO): Er3+ phosphors was studied. Li+ doping improved the optical absorption and intensity enhancement of the phosphors. The results suggest that the reported phosphor may act as a multifunctional material.

CERAMICS INTERNATIONAL (2022)

Article Chemistry, Multidisciplinary

Modulating the optical and electrical properties of oxygen vacancy-enriched La2Ce2O7:Sm3+ pyrochlore: role of dopant local structure and concentration

Santosh K. Gupta et al.

Summary: This work highlights the important role of defects in achieving efficient luminescence and electrical conduction in pyrochlore materials. By doping with Sm3+, the density of oxygen vacancies is enhanced, leading to improved electrical conduction and luminescence efficiency. The preference of Sm3+ for Ce4+ sites and the formation of Sm-Ce-V-O defect complexes are also demonstrated. The 7.5% Sm3+-doped LCOS sample shows the highest defect density and lowest bulk resistance.

NEW JOURNAL OF CHEMISTRY (2022)

Article Chemistry, Analytical

A high-performance room temperature benzene gas sensor based on CoTiO3 covered TiO2 nanospheres decorated with Pd nanoparticles

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)

Review Chemistry, Multidisciplinary

Sensors for Volatile Organic Compounds

Muhammad Khatib et al.

Summary: This paper provides an overview of recent developments in the field of volatile organic compound (VOC) sensors, exploring their applications in healthcare, safety, environmental monitoring, food and agriculture, oil industry, and other fields. The paper discusses the basics of VOC sensing, reviews the available sensing approaches, and highlights the trends in material design, especially nanostructuring and nanohybridization. It also examines emerging sensing materials and strategies, their involvement in different sensing technologies, and offers potential solutions for limitations in the field. The paper concludes by summarizing the current status of the field and suggesting promising directions for future development.

ACS NANO (2022)

Article Chemistry, Physical

Defect Regulation of Terbium-Doped Y2Zr2O7 Transparent Ceramic for Wide-Range Multimode Tunable Light-Shielding Windows

Kailei Lu et al.

Summary: In this study, a transparent ceramic material with light-shielding properties was successfully prepared by controlling the doping concentration and air-annealing temperature. It was found that by adjusting the content of defect clusters, the optical cutoff waveband of the ceramic material can be extended from UV to green light, providing a new approach for the development of lanthanide-doped transparent ceramics for light-shielding windows.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

Article Engineering, Electrical & Electronic

Accordion-like-Ti3C2 MXene-Based Gas Sensors with Sub-ppm Level Detection of Acetone at Room Temperature

Sanjit Manohar Majhi et al.

Summary: Recently, two-dimensional MXenes have gained significant interest as gas-sensing materials due to their superior chemical and physical properties. In this study, accordion-like Ti3C2Tx MXene sensors were successfully synthesized and demonstrated excellent sensitivity and stability for acetone vapor detection at room temperature.

ACS APPLIED ELECTRONIC MATERIALS (2022)

Article Chemistry, Physical

Sc-doped NiO nanoflowers sensor with rich oxygen vacancy defects for enhancing VOCs sensing performances

Bin Tong et al.

Summary: The study shows that the sensing performance of p-type NiO towards VOCs can be significantly improved by Sc doping, with the introduction of V_o defects enhancing sensor response and sensitivity, providing valuable guidance in designing high-performance p-type MOS sensors.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Review Chemistry, Analytical

Low-Dimensional Nanostructures Based on Cobalt Oxide (Co3O4) in Chemical-Gas Sensing

Gayan W. C. Kumarage et al.

Summary: Sensors are in high demand today for monitoring and quantifying hazardous chemicals/gases in the environment due to their high sensitivity, stability, low production costs, ease of maintenance, and portability. One dimensional (1D) metal oxide nanostructured sensors are widely investigated for environmental monitoring, offering superior surface to volume ratio, stability, and cost efficiency in providing information about the presence of chemical species. The utilization of Co3O4 1D nanostructures as active materials for chemical analytes detection has shown promising results over the past decades, thanks to their superior catalytic effect and stability.

CHEMOSENSORS (2021)

Article Materials Science, Multidisciplinary

Synthesis, Characterization and Crystal Chemistry of Uranium and Cerium Doped Yttrium Titanate Pyrochlore: A Potential Waste Immobilization Matrix

Nitin Gumber et al.

Summary: The study on uranium and cerium doped yttrium titanate pyrochlores showed that uranium doping cannot occur to a large extent in air atmosphere, leading to phase separation, while more uranium could be accommodated under reducing conditions. Cerium, on the other hand, could be doped as a single phase in air atmosphere.

JOURNAL OF NUCLEAR MATERIALS (2021)

Article Materials Science, Multidisciplinary

Fabrication and luminescent properties of holmium doped Y2Zr2O7 transparent ceramics as new type laser material

Yucheng Ye et al.

Summary: Highly transparent Ho: Y2Zr2O7 ceramics with different holmium doping concentrations were successfully fabricated via a vacuum sintering method. The ceramics exhibited high in-line transmittance in both visible and near infrared regions, with strong green and NIR emissions observed in luminescence. The ceramics also showed potential for both down and up converted fluorescence.

OPTICAL MATERIALS (2021)

Article Chemistry, Multidisciplinary

Highly Selective Detection of Benzene and Discrimination of Volatile Aromatic Compounds Using Oxide Chemiresistors with Tunable Rh-TiO2 Catalytic Overlayers

Young Kook Moon et al.

Summary: Novel bilayer sensors have been designed for selective detection, discrimination, and analysis of volatile aromatic compounds, showing high selectivity and response towards benzene at various temperatures, as well as the ability to discriminate and analyze various aromatic compounds.

ADVANCED SCIENCE (2021)

Review Chemistry, Physical

Structural Diversity of Ordered Pyrochlores

Mikhail Talanov et al.

Summary: In this study, a comprehensive classification of ordered pyrochlores was established through group-theoretical and crystallographic analysis, revealing the intrinsic relationships and fundamental structural features of the material. The study also discussed the application directions of theoretical results, including interpretation of phase transition origins, experimental property predictions, and materials design.

CHEMISTRY OF MATERIALS (2021)

Article Electrochemistry

Synergistic Acceptor-Donor Interplay of Nd2Sn2O7 Pyrochlore based Sensor in Selective Detection of Hydrogen

Aida Raauf et al.

Summary: The nanostructured thin film of Nd2Sn2O7 pyrochlore obtained through solution processing shows unprecedented selectivity towards hydrogen sensing, with the highest sensitivity towards H-2 detected at 300 degrees Celsius. The high efficiency and reproducibility of the investigated sensor devices indicate the potential of Nd2Sn2O7 based sensors for hydrogen safety applications.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2021)

Article Chemistry, Analytical

Rational design of Bi-doped rGO/Co3O4 nanohybrids for ethanol sensing

Sheng-Xun Cai et al.

Summary: A Bi-doped rGO/Co3O4 nanohybrid with a flower morphology was designed and fabricated for use as a sensing layer in an ethanol sensor, showing a high p-type response and selectivity to ethanol.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

Article Engineering, Environmental

High temperature and high strength Y2Zr2O7 flexible fibrous membrane for efficient heat insulation and acoustic absorption

Yongshuai Xie et al.

Summary: The research team has developed a novel material with excellent thermal stability and flexibility, making it suitable for high-temperature environments with various stringent requirements. This material's unique structure, low density, high porosity, and outstanding thermal insulation performance set it apart from conventional materials.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Multidisciplinary

A highly stable and sensitive ethanol sensor based on Ru-decorated 1D WO3 nanowires

Jianjun Li et al.

Summary: Decorating materials with noble metal catalysts is an effective method for enhancing the sensing performance of WO3 nanowire-based sensors. A sensor based on 4% Ru nanowires showed the highest response to ethanol and demonstrated outstanding repeatability and stability even after 45 days or in higher-humidity conditions.

RSC ADVANCES (2021)

Article Engineering, Electrical & Electronic

Ultrasensitive Sensors Based on PdO@SrFe2O4 Nanosphere-Modified Fibers for Real-Time Monitoring of Ethanol Gas

Mahmood ul Haq et al.

Summary: Spinel ferrites modified by PdO nanospheres exhibit high selectivity and sensitivity as ethanol sensors, showing fast response/recovery speed, low detection limit, and stable long-term performance. The superior sensing performance is attributed to the loading of PdO nanospheres into SrFe2O4 fibers, which promote faster gas transmission kinetics and enhance catalytic spots generation.

ACS APPLIED ELECTRONIC MATERIALS (2021)

Article Materials Science, Multidisciplinary

Bright aspects of defects and dark traits of dopants in the photoluminescence of Er2X2O7:Eu3+ (X = Ti and Zr) pyrochlore: an insight using EXAFS, positron annihilation and DFT

Santosh K. Gupta et al.

Summary: This study investigates luminescent materials induced by dopants and defects through the design of different materials and the use of structural and spectroscopic analysis. The results of the study are helpful for selecting suitable hosts and dopants, and are of significant importance in achieving efficient host-to-dopant energy transfer.

MATERIALS ADVANCES (2021)

Article Materials Science, Ceramics

On comparison of luminescence properties of La2Zr2O7 and La2Hf2O7 nanoparticles

Santosh K. Gupta et al.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2020)

Article Chemistry, Analytical

Oxygen vacancy defects engineering on Ce-doped α-Fe2O3 gas sensor for reducing gases

Xiao Wang et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

Article Nanoscience & Nanotechnology

ZnO-CuO Core-Hollow Cube Nanostructures for Highly Sensitive Acetone Gas Sensors at the ppb Level

Jae Eun Lee et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

Review Chemistry, Inorganic & Nuclear

Lanthanide spectroscopy in probing structure-property correlation in multi-site photoluminescent phosphors

Santosh K. Gupta et al.

COORDINATION CHEMISTRY REVIEWS (2020)

Article Chemistry, Analytical

Enhanced acetone-sensing properties of pt-decorated al-doped ZnO nanoparticles

Aran Koo et al.

SENSORS AND ACTUATORS B-CHEMICAL (2019)

Article Nanoscience & Nanotechnology

Oxygen Vacancy Defects Boosted High Performance p-Type Delafossite CuCrO2 Gas Sensors

Bin Tong et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

Review Chemistry, Inorganic & Nuclear

A Critical Review of Existing Criteria for the Prediction of Pyrochlore Formation and Stability

Antonio F. Fuentes et al.

INORGANIC CHEMISTRY (2018)

Article Chemistry, Multidisciplinary

On structure and phase transformation of uranium doped La2Hf2O7 nanoparticles as an efficient nuclear waste host

Maya Abdou et al.

MATERIALS CHEMISTRY FRONTIERS (2018)

News Item Oncology

Carcinogenicity of benzene

Dana Loomis et al.

LANCET ONCOLOGY (2017)

Article Materials Science, Ceramics

Ce incorporated pyrochlore Pr2Zr2O7 solid electrolytes for enhanced mild-temperature NO2 sensing

Fulan Zhong et al.

CERAMICS INTERNATIONAL (2017)

Article Chemistry, Physical

Pressure-induced structural transition of Y2Zr2O7

Hui Li et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2016)

Article Chemistry, Multidisciplinary

Adsorption/desorption performance of volatile organic compounds on electrospun nanofibers

Lanling Chu et al.

RSC ADVANCES (2015)

Article Materials Science, Multidisciplinary

Cation antisite disorder in uranium-doped gadolinium zirconate pyrochlores

Daniel J. Gregg et al.

JOURNAL OF NUCLEAR MATERIALS (2014)

Article Materials Science, Ceramics

Gd2Zr2O7 and Nd2Zr2O7 pyrochlore prepared by aqueous chemical synthesis

Linggen Kong et al.

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (2013)

Article Chemistry, Physical

Fabrication of Highly Sensitive Ethanol Chemical Sensor Based on Sm-Doped Co3O4 Nanokernels by a Hydrothermal Method

Mohammed M. Rahman et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2011)

Article Chemistry, Physical

Meso- and Macroporous Co3O4 Nanorods for Effective VOC Gas Sensors

Hoa Nguyen et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2011)

Review Chemistry, Multidisciplinary

Solvothermal synthesis of perovskites and pyrochlores: crystallisation of functional oxides under mild conditions

Deena R. Modeshia et al.

CHEMICAL SOCIETY REVIEWS (2010)

Article Chemistry, Inorganic & Nuclear

Order-disorder transition in the Nd2-yYyZr2O7 system: Probed by X-ray diffraction and Raman spectroscopy

B. P. Mandal et al.

JOURNAL OF SOLID STATE CHEMISTRY (2010)

Article Physics, Condensed Matter

Defect structure and electrical conduction behavior of Bi-based pyrochlores

Huiling Du et al.

SOLID STATE COMMUNICATIONS (2010)

Article Materials Science, Multidisciplinary

Preparation and characterization of Y2Zr2O7 nanocrystals and their photocatalytic properties

Yuping Tong et al.

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS (2008)

Article Chemistry, Physical

Thermal expansion and defect chemistry of MgO-Doped Sm2Zr2O7

Zhixue Qu et al.

CHEMISTRY OF MATERIALS (2007)