Article
Materials Science, Multidisciplinary
Zhaohua Wang, Mingfeng Zhi, Manzhang Xu, Chen Guo, Zhenwu Man, Zhiyong Zhang, Qiang Li, Yuanyuan Lv, Wu Zhao, Junfeng Yan, Chunxue Zhai
Summary: Sb-doped SnO2/ZnO nano-heterojunctions were prepared using a microwave hydrothermal method, and the effects of Sb-doping on the morphology and gas sensor performance of SnO2/ZnO NHs were studied in detail. The study found that Sb-doping changed the morphology of SnO2 and enhanced the gas sensor response.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yuan-Chang Liang, Yu-Wei Hsu
Summary: In this study, a two-layered thin-film structure consisting of a dispersed nanoscaled Ag2O phase and SnO2 layer (SA) and a mono-composite film layer (CSA) consisting of a nanoscale Ag2O phase in the SnO2 matrix were designed and fabricated for NO2 gas sensor applications. Both SA and CSA thin films exhibited enhanced gas-sensing responses toward low-concentration NO2 gas.
NANOTECHNOLOGY REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Ramarajan Ramanathan, Selvakumar Nagarajan, Venkataramana Bonu, Priyanka Patel, Shubhangi Jamdar, Harish C. Barshilia, Ramesh Chandra Mallik
Summary: Thin film technology offers possibilities and advancements in gas sensor devices. Sb-doped nanometer thin-SnO2 films were developed for CO/NH3 gas detection. The structural, surface, optical, and resistivity properties were investigated as a function of film thickness. ATO thin films showed enhanced response towards CO/NH3 gas detection with better stability and selectivity for CO gas. The results indicate the potential application of nanometer ATO films for enhanced gas detection.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Amruta B. Nagare, Namdev S. Harale, Suprimkumar D. Dhas, Umesh V. Shembade, Suhas R. Ghatage, Pramod S. Patil, Annasaheb V. Moholkar
Summary: Nanogranular polypyrrole (PPy) thin films were successfully synthesized by in-situ oxidative polymerization and drop casting method. The films exhibited agglomerated granular-like morphology with high roughness. The optimized PPy thin film gas sensor showed excellent response and stability towards NO2 gas even at low concentrations.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
V. S. Kamble, R. K. Zemase, R. H. Gupta, B. D. Aghav, S. A. Shaikh, J. M. Pawara, S. K. Patil, S. T. Salunkhe
Summary: The application of Cu-doped ZnO nanomaterials in the gas sensing field was extensively studied. The structural, morphological, and spectral properties of the synthesized nanomaterials were examined. The gas sensing study revealed that the Cu-doped ZnO thin-film sensor showed a high response and selectivity towards NO2 gas under specific conditions.
Article
Chemistry, Analytical
Jihee Kim, Masoud Nazarian-Samani, Jihyun Lee, Sang-kil Lee, Kyu Hyong Lee, Ji Hee Pi, Yu Jin Kim, Sanghyeon Lee, Wooyoung Lee
Summary: High selectivity and fast response are crucial for protecting human health in dangerous environments. The p-n SnO/SnO2 heterostructure, with its synergistic effect on semiconducting properties and interfacial electric field, shows excellent sensing performances. It has a high response rate, fast response time, and superior selectivity compared to other target gases. The presence of oxygen vacancies in the SnO/SnO2 heterostructure is supported by Raman and EPR results, and the role of these vacancies as an effective electron donor for adsorbed oxygen molecules and NO2 target gas is described by XPS and ToF-SIMS analyses. The direct formation of oxygen vacancies in SnO/SnO2 heterostructures is an important reference for the development of high-performance NO2 gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Materials Science, Multidisciplinary
Jae Hoon Bang, Namgue Lee, Ali Mirzaei, Myung Sik Choi, Hyeong Su Choi, Hyunwoo Park, Hyeongtag Jeon, Sang Sub Kim, Hyoun Woo Kim
Summary: The study demonstrated that functionalizing SnO2 nanowires with SnS nanoparticles could enhance the sensing performance of NO2 gas, with improved response time compared to bare SnO2 nanowires. This approach could lead to the development of low-temperature SnO2 NW-based gas sensors.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Analytical
Vo Thanh Duoc, Chu Manh Hung, Hugo Nguyen, Nguyen Van Duy, Nguyen Van Hieu, Nguyen Duc Hoa
Summary: The grafted structures between SnO2 and ZnO nanowires were achieved through a two-step growth process, showing promising sensitivity for NO2 gas sensing.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
S. Kailasa Ganapathi, Manmeet Kaur, Soumen Samanta, Niyanta Datta, Ajay Singh, R. S. Ningthoujam, S. C. Gadkari, A. K. Debnath
Summary: In this study, the surface modification of tin oxide (SnO2) thin films using magnesium phthalocyanine (MgPc) is shown to enhance NO2 sensing response by 100%. The MgPc modified films exhibit higher sensor response, faster response and recovery time, and lower operating temperature compared to pristine SnO2 films. The enhancement is attributed to the formation of p-n hetero junctions and increased oxygen adsorption sites on the sensor surface.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Soumitra Das, K. G. Girija, A. K. Debnath, R. K. Vatsa
Summary: Undoped and Ni doped SnO2 nanoparticles were synthesized by low temperature polyol route and showed improved sensor response towards SO2 and NO2. Ni doping enhances the formation of oxygen vacancies and surface hydroxyl groups, leading to excellent sensor performance and selectivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Myung Sik Choi, Ali Mirzaei, Han Gil Na, Sangwoo Kim, Dong Eung Kim, Kyu Hyoung Lee, Changhyun Jin, Sun-Woo Choi
Summary: This study proposed a method to enhance the gas sensing properties of metal oxide nanowires by preparing Pd metal catalyst surrounded by SnO2-x with structural defects on the surface of SnO2 nanowires. Gas sensing studies demonstrated the promising effects of this approach, showing the usefulness of significantly enhancing the gas sensing properties.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Liang-Yan Guo, Sheng-Yuan Xia, Yaxiong Tan, Zhengyong Huang
Summary: With the rapid development of the economy, the problem of gas pollution has gained increasing attention, making the development of new gas sensing materials crucial. In this study, a SnO2-GeSe monolayer was constructed using the DFT method, and its gas-sensitive adsorption parameters for NO2, H2O, and CO2 gases were calculated and studied. The results revealed that the SnO2-GeSe monolayer exhibited good selectivity and sensitivity towards NO2, H2O, and CO2, with H2O being the most sensitive.
SURFACES AND INTERFACES
(2022)
Article
Physics, Applied
Lihao Zhou, Yinhua Hu, Shaobo Li, Xianghong Liu, Jun Zhang
Summary: In this study, MXene was passivated using atomic layer deposition (ALD). The passivated MXene@SnO2 material exhibited a high response rate and fast recovery time in gas sensor tests, demonstrating the potential for developing MXene-based gas sensors using the ALD technique.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Ceramics
M. Boomashri, P. Perumal, K. V. Gunavathy, Fatemah H. Alkallas, Amira Ben Gouider Trabelsi, Mohd Shkir, S. AlFaify
Summary: This paper investigates the gas-sensing properties of Sb-doped SnO2 thin films prepared through nebulizer-assisted spray pyrolysis. The results show that 0 to 5 wt% Sb doping improves the inherent characteristics of the transparent conducting oxide. The 2-wt%-Sb-doped SnO2 film exhibits a high response rate and suitable characteristics to detect 250 ppm ammonia as a gas sensor.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Merel J. Lefferts, Ben Armitage, Krishnan Murugappan, Martin R. Castell
Summary: This study demonstrates the use of PEDOT conducting polymer percolation networks for sensitive and reversible NO2 sensing. By adjusting the polymerization and doping conditions, control over sensing behavior is achieved, resulting in reversible NO2 sensors with higher sensitivity compared to traditional thin film sensors. A detection limit of 907 +/- 102 ppb was achieved.
Article
Chemistry, Analytical
Ajeet Singh, Shakti Singh, B. C. Yadav
Summary: A self-powered carbon dioxide (CO2) gas sensor based on CeO2/CdS triboelectric nanogenerator (TENG) was developed, which exhibited good sensitivity and selectivity. The resistive type and self-powered CO2 gas sensing performance of CeO2, CdS, and CeO2/CdS nanomaterials were compared. CeO2/CdS heterostructure was confirmed to form a type II heterojunction through XPS analysis. The CeO2/CdS showed a regular nanosphere morphology with a size range of 30-60 nm. The resistive type CO2 gas sensor achieved a sensor response of 3.96 at 1000 ppm CO2, while the self-powered CO2 gas sensor achieved a response of 30 at the same concentration. The minimum response and recovery times for 250 ppm CO2 were found to be 1835 and 835 ms, respectively. The self-powered CeO2/CdS TENG-based CO2 sensor demonstrated high sensitivity, selectivity, and quick responsiveness.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Multidisciplinary
Anushi Sharma, Priyanka Chaudhary, Arpit Verma, Ravi Kant Tripathi, Rajeev Kumar, Gaurav Gupta, D. P. Mondal, B. C. Yadav, A. K. Srivastava
Summary: Lightweight porous carbon materials have gained significant attention in gas and humidity sensing due to their excellent properties. Carbon foam with a low density of 0.28 g cm(-3) and an electrical conductivity of 32 S cm(-1) was synthesized from phenolic resin using the polyurethane foam impregnation method. The carbon foam-based humidity sensor demonstrated good sensitivity (8.260 M/%RH) at 40 Hz and fast response and recovery times (6 s and 49 s, respectively). It also displayed high repeatability (94%) and stability.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Peramjeet Singh, N. K. Pandey, V. V. Siva Kumar, Vernica Verma, Ajeet Singh, Priya Gupta, B. C. Yadav
Summary: This study aimed to investigate the impact of annealing temperature on the characteristics of MoO3. Nanoparticles of MoO3 were synthesized using hydrothermal technique and made into thin films via spin coating method. The films were annealed at different temperatures and their structural, morphological, electrical, and optical properties were examined. The films were also tested as sensors for liquefied petroleum gas and humidity. The results showed that the annealing temperature affected the properties of the films, and the film annealed at 600 degrees C exhibited the best sensing response to the gas and humidity.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Nirbhay Singh, Shweta Tanwar, Pradip Kumar, A. L. Sharma, B. C. Yadav
Summary: A cost-effective, environment-friendly polyaniline-wrapped activated carbon-FeOOH ternary composite electrode is developed for efficient and sustainable energy storage. The electrode shows structural stability and potential as an energy storage device. The ternary composite utilizes polyaniline maximum and exhibits high capacitance and electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Rajnish Raj, Pooja Lohia, D. K. Dwivedi, Pravin Kumar Singh, Arpit Verma, B. C. Yadav
Summary: This research presents a synthesis approach for a highly responsive and cost-effective Ge-Sb-S nanomaterial for photodetection system. The characterization of the samples was performed using various techniques including XRD and SEM. The photodetector device made of (GeS2)(40)(Sb2S3)(60) showed the highest responsivity, EQE, and detectivity at a bias potential of 5 V.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Aastha Singh, Ajeet Singh, Arpit Verma, Bal Chandra Yadav, Vishal Chaudhary
Summary: This study reports on the development of an energy-efficient and economic ammonia-detecting chemiresistor using hydrothermally engineered ZnCo2O4 nanoflakes. The morphology and crystal structure of the nanoflakes were examined, and the chemiresistor demonstrated superior sensing performance in terms of response and recovery times at different concentrations of ammonia. The high surface area and stable crystal structure of the ZnCo2O4 nanoflakes contribute to the enhanced sensing performance.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Jitesh Pani, Devkaran Maru, Priyanka Chaudhary, Jitendra Gangwar, Kanapuram Uday Kumar, Bal Chandra Yadav, Hitesh Borkar
Summary: In this study, MoS2 nanostructures with improved interlayer spacing were synthesized through different reaction times. The synthesized MoS2 structures exhibited 3D flower-like and ultrathin 2D sheet-like morphologies. The enhanced interlayer spacing in the nanostructures was confirmed through various analytical techniques. The MoS2 nanoflower demonstrated excellent physicochemical properties and showed high specific capacitance and cyclic stability.
Article
Nanoscience & Nanotechnology
Arpit Verma, Bal Chandra Yadav
Summary: The aim of this research is to evaluate the acetone-sensing performance of the heterostructured nanohybrid of WO3/WS2 using a rapid chemiresistive sensor. The results show the formation of a 2D/2D nanosheet-like system of the WO3/WS2 heterostructure, and the sensor responds to acetone concentrations of 1000 and 1 ppm with values of 132.5 and 17.0, respectively. Therefore, this sensor device has potential applications in biomedical and industrial-scale utilization. Rating: 8 out of 10.
ACS APPLIED NANO MATERIALS
(2023)
Article
Environmental Sciences
Maikesh Mathur, Arpit Verma, Ajeet Singh, B. C. Yadav, Vishal Chaudhary
Summary: A nano-enabled low-trace monitoring system has been developed for detecting acetone, which has the potential to revolutionize non-invasive diagnosis of human diabetes and environmental monitoring. The system utilizes CuMoO4 nanorods as a sensing platform and demonstrates excellent acetone detection performance, with rapid response time and long-term stability. This work offers a promising alternative to invasive biomedical diagnostics and opens new possibilities for nanoenabled acetone monitoring technologies.
ENVIRONMENTAL RESEARCH
(2023)
Article
Energy & Fuels
Nirbhay Singh, Shweta Tanwar, A. L. Sharma, B. C. Yadav
Summary: Supercapacitors are the most dependent storage technologies, offering faster energy supply, sustainability, and high-capacity retaining. This research focuses on the development of a sustainable activated carbon-based iron oxyhydroxide material prepared via a low-temperature hydrothermal technique. The material exhibits excellent cyclic stability, elemental composition, and electrochemical performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Electrical & Electronic
Arpit Verma, Priyanka Chaudhary, Anshika Singh, Ravi Kant Tripathi, Bal Chandra Yadav, Pratima Chauhan
Summary: This research presents an innovative paper electronics device with Bi2S3 nanorods integrated into a polyaniline matrix, aiming to achieve high external quantum efficiency for energy conversion. The device shows a large photoresponsivity and high external quantum efficiency at low drift potential and small optical power. It also exhibits notable responsiveness under flexibility without the use of any binder.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Anshika Singh, Pratima Chauhan, Arpit Verma, B. C. Yadav
Summary: An enhanced photoresponse was observed in the Mn-Co Nanoferrites (MCFs)-Polyaniline (PANI) nanohybrid architecture due to the formation of interface between PANI and MCFs, which provided a conduction pathway. X-ray photoelectron spectroscopy (XPS) suggested the presence of various carbon peaks in the MCF-PANI nanohybrid. The constructed photodetector device exhibited high photoresponsivity, detectivity, and fast rise/decay time due to the intimate interaction between MCFs and PANI at their interface.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Review
Chemistry, Physical
Prabhakar Yadav, Kuldeep Sahay, Arpit Verma, D. K. Maurya, B. C. Yadav
Summary: This review highlights the mechanism, design principles, materials, and applications of triboelectric nanogenerators (TENGs). It discusses TENGs as self-powered sensors for various purposes, their ability to store energy and capture energy from different sources, and their potential use in the biomedical field. The review emphasizes how TENG technology can contribute to advancements in energy harvesting, environmental monitoring, and healthcare.
SUSTAINABLE ENERGY & FUELS
(2023)
Correction
Materials Science, Multidisciplinary
Sarvesh Kumar Avinashi, Ajaz Hussain, Kuldeep Kumar, Bal Chandra Yadav, Chandkiram Gautam
OXFORD OPEN MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Arpit Verma, Anshika Singh, Priyanka Chaudhary, Ravi Kant Tripathi, B. C. Yadav, Pratima Chauhan, Devesh Kumar
Summary: In this research, we investigated the photodetection mechanism of WS2 nanosheets embedded in a polyvinyl alcohol matrix. The nanosheets were synthesized and embedded in the matrix using a solution method. The SEM micrographs confirmed the successful incorporation of WS2 nanosheets in the matrix. XRD results revealed the crystal structure of the nanosheets, while a Tauc plot showed the optical band gap energy. The zeta potentials and photodetection measurements were also analyzed.
MATERIALS ADVANCES
(2023)
