Article
Engineering, Electrical & Electronic
Song Zou, Jingxuan Wu, Bo Wang, Qingsong Luo, Wenjun Wang, Zhenxing Wang, Yu Wan, Changhao Feng
Summary: Efficient and reliable monitoring of trimethylamine (TMA) is crucial for environmental protection and human healthcare. Molybdenum trioxide (MoO3) nanofibers have been identified as a promising sensing material with a low-detection limit for TMA. Controllable morphology of MoO3 nanofibers was achieved through adjusting electrospinning and calcination conditions. MoO3 with a second-step calcination time of 90 s exhibited excellent sensing properties towards TMA.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Mallaurie Foucaud, Sanja Renka, Teodoro Klaser, Jasminka Popovic, Zeljko Skoko, Petr Mosner, Ladislav Koudelka, Ana Santic
Summary: Glass-ceramics containing crystalline NaMoO2PO4 were prepared through heat-treatments at different temperatures and times. These materials exhibit high proton conductivity and remarkable humidity-sensing properties in a humid environment, making them potential candidates for applications.
Article
Chemistry, Analytical
Xinghui Hou, Chengliang Ma, Haipeng Ji, Shasha Yi, Liying Zhang, Zongtao Zhang, Yu Wang, Lei Yuan, Deliang Chen, Ying Zhou
Summary: Au@MoO3 nanocomposites were synthesized via hydrothermal method to effectively detect triethylamine (TEA) by regulating the loading paths of Au nanoparticles (NPs). The nanocomposites exhibited a 3D hierarchical structure assembled by 200-500 nm nanosheets, providing a large specific surface area. The sensor loaded with more Au NPs showed a high response to TEA with a low detection limit and fast response/recovery times. It also demonstrated selectivity, anti-interference, repeatability, and stability. The enhanced TEA-sensing can be attributed to the synergies between Au NPs and the hierarchical structure with high active sites.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Ceramics
Yinghua Qiu, Yunpeng Wang
Summary: A simple strategy for synthesizing porous Co3O4 nanostructures through a hydrothermal process was introduced. The Co3O4 nanorods obtained demonstrated porous structural features and showed excellent gas sensing properties with high response and short response and recovery time to ethanol, as well as anti-interference ability towards other gases.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Sen Liu, Zhimin Yang, Liang Zhao, Yaqing Zhang, Yunpeng Xing, Teng Fei, Haiyan Zhang, Tong Zhang
Summary: In this study, a glucose-assisted combustion synthesis strategy was demonstrated for the synthesis of alpha-MoO3 materials with controllable structures. The resulting alpha-MoO3-2 sample showed excellent sensing performances for detecting ethanol, with a low detection concentration, high response, and wide detection range.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Y. T. Ma, S. Y. Ma, J. Tang, Z. G. Wu, J. Shi, Y. Zhao, Y. Wang, S. T. Pei
Summary: The heterostructured SnS@MoO3 composite material, synthesized by hydrothermal method, showed higher response rate, better selectivity, and humidity resistance properties when detecting Triethylamine compared to MoO3.
Article
Chemistry, Physical
Balamurugan Arumugam, Selvakumar Palanisamy, Sayee Kannan Ramaraj, Matteo Chiesa
Summary: A hydrothermal technique was used to generate a MoO3/f-MWCNTs nanocomposite as an electrode material for electrochemical detection of PTZ. Extensive characterization of the nanocomposite was done using spectroscopic and microscopic techniques. The MoO3/f-MWCNTs nanocomposite electrode showed superior electrocatalytic activity, low oxidation overpotential, low detection limit, wide linear response range, and high sensitivity for PTZ detection.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Huiqing Fan, Xiaokun Zheng, Qi Shen, Weijia Wang, Wenqiang Dong
Summary: A hierarchical SnO2 nanosheet structure loaded with Pt nano quantum dots was prepared and exhibited high gas sensitivity and excellent response and recovery behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Zhengpeng Fan, Xueting Zhang, Ming Zhou, Yanling Yang, Guoxia Wen
Summary: MoO3 nanoparticles were prepared and characterized for gas sensing properties towards ethanol. It was found that the optimum working temperature for sensing ethanol gas was 180 degrees C under nitrogen and air backgrounds, with sensitivities of 350 and 71 at 100 ppm ethanol concentration, respectively. Comparing the sensitivity and current increase with the increase of ethanol concentration, it was concluded that the gas-sensitive response of MoO3 to ethanol gas is dominated by lattice oxygen and adsorbed oxygen ions, with the former exhibiting significantly better performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Onur Alev, Imren Erguen, Okan Oezdemir, Leyla Colakerol Arslan, Serkan Bueyuekkoese, Zafer Ziya Ozturk
Summary: Cu-doped ZnO nanorods showed enhanced sensor response towards ethanol and allowed operation at lower temperatures compared to pristine ZnO nanorods, with 2% and 3% Cu-doped sensors exhibiting selective behavior towards ethanol.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
Atul Kumar, Ravindra Kumar Rawat, Pratima Chauhan
Summary: The facial synthesis of a-MoO3 nanoparticles was achieved using a chemical co-precipitation method. The synthesized a-MoO3 nanomaterials showed potential applications in sensing ammonia and photocatalytic degradation of organic dyes. The a-MoO3-based sensor exhibited high selectivity and stability towards ammonia, with response and recovery times of 8 s and 11 s, respectively, for 500 ppm of NH3 under 95% RH. The maximum degradation efficiencies for methylene blue and methyl orange dyes were calculated to be 95% and 73%, respectively, indicating the effectiveness of the synthesized a-MoO3 nanoparticles as both an NH3 sensor and a photocatalyst for organic dye degradation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Analytical
Radha Bhardwaj, Arnab Hazra
Summary: In this study, SrTiO3 hollow spheres were introduced for the humidity independent sensing of ethanol vapor. The surface functionalization of the hollow spheres with Pd nanoparticles enhanced their sensing performance towards ethanol. These sensors exhibited excellent anti-humidity properties and high response towards ethanol, regardless of humidity condition, with rapid response/recovery, selectivity, reversibility, and long term stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Shuai Zhang, Peng Song, Jing Sun, Yongling Ding, Qi Wang
Summary: MoO3/Ti3C2Tx MXene nanocomposites were successfully prepared by a simple hydrothermal synthesis method, achieving effective monitoring of low-concentration ethanol gas (1.61@1 ppm). The MoO3/Ti3C2Tx MXene nanocomposites have a doubled specific surface area (61.044 m2/g) compared to Ti3C2Tx MXene (33.385 m2/g), providing more reaction centers and active sites for ethanol molecules. The gas-sensing results showed outstanding selectivity, reproducibility, and fast response-recovery (10/49 s). The possible sensing mechanism of the composite was discussed in detail with density functional theory (DFT). This work provides a new sensing design strategy for detecting VOCs at low-temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Jae Ho Kim, Drajad Satrio Utomo, Daseul Lee, Jin Woo Choi, Myungkwan Song
Summary: The novel micro-flower lamellar structured alpha-MoO3 counter electrode shows higher catalytic activity, improved power conversion efficiency, better device stability, and enhanced flexibility for solid-state fiber-shaped dye-sensitized solar cells. Additionally, it maintains over 90% of its characteristics after 500 bending cycles, in contrast to the bare Pt device which decreases to 70%.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Fei Fei, Hai Zhou, Min Kang
Summary: In this work, polyoxometalate (POM) derived MoO3/CoMoO4 composites were prepared by a simple and efficient hydrothermal and calcination process. The composites exhibited remarkable electrochemical performances, high energy density, and excellent cycle life.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)