Article
Materials Science, Ceramics
Xidong Hao, Yinglin Wang, Pengfei Cheng, Shanfu Sun, Luping Xu, Yintang Yang, Yue Hao
Summary: For real-time and in-situ NOx monitoring, a high-performance NO2 mixed potential sensor based on yttria-stabilized zirconia (YSZ) with an MMn2O4 sensing electrode(SE) (M = Co, Cd and Zn) was successfully fabricated. Among the three sensing electrodes, the ZnMn2O4 showed the smallest interface resistance to 100 ppm NO2 and exhibited the highest response. By optimizing the sintering temperature, the ZnMn2O4 sensor sintered at 1000 degrees C achieved the highest response of 23 mV to 10 ppm NO2. The sensor also demonstrated a wide detection range of 1-1000 ppm, with excellent sensitivities and long-term stability.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Siyuan Lv, Zeyu Liu, Fangmeng Liu, Li Jiang, Yueying Zhang, Tianshuang Wang, Xiaoteng Jia, Peng Sun, Lijun Wang, Geyu Lu
Summary: A methanol gas sensor with wide detection range and sensitivity has been developed for monitoring methanol leakage in high-temperature fuel cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Qi Lu, Lingchu Huang, Xidong Hao, Weijia Li, Bin Wang, Tong Wang, Xishuang Liang, Fangmeng Liu, Chenguang Wang, Geyu Lu
Summary: The YSZ-based mixed potential type NH3 sensor has a promising application in on-board SCR systems due to its good thermal and chemical stability. By developing high-performance sensing electrode materials, the NH3 sensing performance of this sensor was significantly improved. The sensor modified with 20 mol.% NiO exhibited the highest response to 100 ppm NH3, with a low detection limit of 5 ppm, showing potential for in-situ ammonia monitoring in industrial and automotive applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Yueying Zhang, Tianyi Gu, Fangmeng Liu, Li Jiang, Siyuan Lv, Jing Wang, Si Pan, Xiaoteng Jia, Peng Sun, Yuan Gao, Geyu Lu
Summary: Researchers developed a novel ultrasensitive and selective MPSE NO2 sensor based on K2Fe4O7 solid electrolyte and Ni-MOF|N2 sensing electrode. The sensor can achieve a low detection limit of 5 ppb at room temperature without additional energy supply. It can also be used as an information collection terminal for IoT systems, enabling remote monitoring, environment evaluation, and information sharing.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Xidong Hao, Yinglin Wang, Pengfei Cheng, Shanfu Sun, Luping Xu, Xishuang Liang, Geyu Lu, Yue Hao
Summary: A new type YSZ-based mixed potential gas sensor with Nd2NiO4 sensing electrode was developed for the detection of hazardous gas hydrogen sulfide (H2S). The sensor exhibited the highest response value to 1 ppm H2S due to its strong electrochemical catalytic activity. It also showed fast response/recovery time, low detection range, and good sensitivity to different concentrations of H2S. Moreover, the sensor demonstrated good repeatability, excellent selectivity, and acceptable stability during 30 days continuous measurement.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Environmental
Aman Bhardwaj, In-Ho Kim, Lakshya Mathur, Jun-Young Park, Sun-Ju Song
Summary: An ultrahigh-sensitive mixed-potential ammonia sensor was developed using a new dual-functional NiWO4 electrocatalyst, demonstrating excellent sensitivity, selectivity, and trace-level NH3 detection ability. Operating at 550 degrees C, the sensor showed rapid response/recovery times and long-term stability for exhaust environment monitoring.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
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
Chemistry, Analytical
Qi Lu, Lingchu Huang, Weijia Li, Tong Wang, Hao Yu, Xidong Hao, Xishuang Liang, Fangmeng Liu, Peng Sun, Geyu Lu
Summary: A high-performance YSZ-based mixed potential NH3 sensor utilizing Ag decorated FeVO4 as the sensing electrode material has been successfully developed for in-vehicle SCR systems, showing rapid detection, low detection limit, and high stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Siyuan Lv, Yueying Zhang, Li Jiang, Lianjing Zhao, Jing Wang, Fangmeng Liu, Chenguang Wang, Xu Yan, Peng Sun, Lijun Wang, Geyu Lu
Summary: The sensor fabricated with electrospinning technology showed high sensitivity to NO2, fast response and recovery rates, good repeatability, excellent selectivity, moisture resistance, and long-term stability. The enhanced NO2 sensing performance is attributed to the increased area of three-dimensional TPB providing more active sites for electrochemical reactions.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Siyuan Lv, Tianyi Gu, Jing Wang, Si Pan, Fangmeng Liu, Peng Sun, Lijun Wang, Geyu Lu
Summary: Gas sensors integrated with machine learning algorithms have been developed to improve the selectivity of sensors. In this study, a single YSZ-based mixed potential sensor was developed for effective detection and discrimination of gas mixtures. By regulating the temperature, unique response patterns for specific gas mixtures were generated and machine learning algorithms were used for discrimination, achieving elevated accuracy rates.
Article
Chemistry, Analytical
Siyuan Lv, Jialiang Fan, Fangmeng Liu, Yueying Zhang, Li Jiang, Sihong Ouyang, Chuan Zhang, Chenguang Wang, Peng Sun, Lijun Wang, Geyu Lu
Summary: In this study, a mixed potential type acetone gas sensor was developed for noninvasive screening of diabetes. The sensor exhibited good sensitivity, response time, and recovery time, and demonstrated good repeatability, stability, reliability, and selectivity. The response value of the sensor was also influenced by the relative humidity value.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Environmental
Luqman Hakim Mohd Azmi, Pavani Cherukupally, Elwin Hunter-Sellars, P. Bradley Ladewig, R. Daryl Williams
Summary: Competition for adsorption sites between atmospheric moisture and volatile organic compounds can significantly impact the VOC removal performance of metal-organic framework adsorbents like MIL-101. In this study, a vapor phase deposition of polydimethylsiloxane (PDMS) was used to create more hydrophobic MIL-101 composites, resulting in enhanced internal hydrophobicity and intact porosity. The MIL-101-PDMS composite showed superior performance in capturing toluene, exhibiting higher adsorption capacity and overall capture rate compared to pristine MIL-101, and maintaining excellent structural stability and adsorption performance after multiple sorption/desorption cycles.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
X. Zhang, H. Kohler, M. Schwotzer, U. Guth
Summary: The electrochemical characteristics of a layered Au,Pt-YSZ mixed-potential (APE) gas sensing electrode were studied, showing a drastic reduction in mixed-potential response to CO after 100 days of operation in ambient air, which can be almost fully restored by applying cathodic polarization treatment. Additionally, polarization treatment at elevated temperatures enhanced the regeneration effect on electrochemical behaviors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Ke Chen, Yue Zhou, Rongrong Jin, Tianshuang Wang, Fangmeng Liu, Chenguang Wang, Xu Yan, Peng Sun, Geyu Lu
Summary: A novel gas sensor was developed for ultrasensitive and tunably selective detection of formaldehyde and acetone using cobalt-doped SnO2 multilayer films. The sensor showed superior gas detection performance due to its larger specific surface area, effective gas accessibility, high catalytic activity, and increased chemisorbed oxygen species. Additionally, the sensor demonstrated dual-model gas sensing characteristics for formaldehyde and acetone detection at different operating temperatures.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Jiansheng Zhang, He Zhang, Yue Teng, Jianxin Yi
Summary: In this study, the dynamic hydrogen sensing process was investigated using numerical simulation and experimental assessment. Factors affecting the response and recovery times were identified, and the findings provide insights into the sensing kinetics of mixed-potential hydrogen sensors, which can guide sensor design.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
