Article
Engineering, Electrical & Electronic
Jei-Li Hou, Ting-Jen Hsueh
Summary: This study fabricated a CuO nanosheet gas sensor using MEMS structure and found that the sensor exhibit temperature-dependent sensing behavior to NO2, with a transition from n-type to p-type at higher temperatures.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Analytical
Hairui Fang, Sheng Li, Huamin Zhao, Jin Deng, Dong Wang, Jing Li
Summary: Composite sensing materials with complex hierarchical structures exhibit better performance in chemiresistive sensors due to rich defects induced by the hierarchical structures. The hierarchical structure was controllably constructed by adjusting the composition of CuO and Co3O4, promoting the enrichment of lattice oxygen confirmed by XPS, leading to enhanced NO2 sensing performance. The improved sensing performances are attributed to the rich lattice oxygen with chemical activity induced by the hierarchical structure, providing new ideas for the synthesis of high-performance composite sensing materials.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Na Wang, Wei Tao, Xueqin Gong, Liupeng Zhao, Tianshuang Wang, Lianjing Zhao, Fangmeng Liu, Xiaomin Liu, Peng Sun, Geyu Lu
Summary: Three-dimensional hierarchical Cu2O-CuO microflowers assembled by nanorods were synthesized through an environmentally friendly hydrothermal route. The Cu2O-CuO microflowers-2 sensor exhibits excellent selectivity, repeatability, and long-term stability to NO2, with fast response and recovery time, even under high humidity conditions. Such superior sensing properties can be attributed to its unique structural advantages, more surface adsorbed oxygen, and the synergistic influence between the two-phase coexistence.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Amit Kumar Shringi, Amit Kumar, Maloy Das, Sang Sub Kim, Hyoun Woo Kim, Mahesh Kumar
Summary: Novel metal functionalization of semiconductor metal oxide surfaces can effectively improve the selectivity and sensitivity of gas sensors. In this study, the functionalization of α-Fe2O3 sensor with silver nanoparticles enhanced its sensing performance for NO2 molecules, resulting in a higher relative response rate.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Ting-Jen Hsueh, Pao-Sheng Li, Shi-Yan Fang, Cheng-Liang Hsu
Summary: This study produced CuO nanowires using RF sputtering and integrated them into a MEMS structure to form a gas sensor. XRD analysis showed preferred orientation of the CuO NWs. Long term testing demonstrated the sensor's high selectivity to NO2 and stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Ceramics
D. M. Chethana, T. C. Thanuja, H. M. Mahesh, M. S. Kiruba, A. S. Jose, H. C. Barshilia, J. Manjanna
Summary: CuO nanoparticles are synthesized through the oxidation of Cu/Cu2O obtained by the chemical reduction of Cu2+ ions. The band gap energy of CuO is blue shifted and exhibits weak ferromagnetic behavior at lower temperature. Additionally, CuO shows good sensitivity to NO2 gas in the temperature range of 200-300 degrees Celsius.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Yumeng Liu, Qingfei Liang, Pingyang Zheng, Gang Li, Jia Liu, Jinniu Zhang, Jianzhi Gao, Hongbing Lu
Summary: Porous raspberry-like CuO hollow nanospheres were prepared by calcining Cu3N nanosphere precursors through a solid-gas displacement reaction involving the Kirkendall effect. The raspberry-like CuO hollow nanospheres had a spherelike microstructure with a rough surface, showing hydrophobic properties. The CuO hollow nanospheres exhibited high response and improved kinetics, as well as good selectivity and repeatability for NO2 sensing, attributed to their increased specific surface area, porosity, and hydrophobic surface.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Xiangxiang Chen, Sikai Zhao, Pengfei Zhou, Baoyu Cui, Wenbao Liu, Dezhou Wei, Yanbai Shen
Summary: A room-temperature NO2 gas sensor based on Au-functionalized CuO nanorods was fabricated in this study. By controlling the amount of Au functionalization, the sensitivity and recovery performance can be optimized, showing good selectivity and repeatability. The sensing mechanism of the materials to NO2 was investigated through changes in energy band gap and activation energy with Au functionalization.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Jiran Liang, Wenhao Wu, Qun Lou, Kangqiang Wang, Chang Xuan
Summary: The study focused on the preparation of Ag-modified VO2 nanorods using a two-step method to improve NO2 sensing performance at room temperature. The results showed that nanorods annealed at 450 degrees Celsius had the highest sensitivity, reaching a response value of up to 2.54-5 ppm NO2, while the response value decreased as humidity increased. The good sensing performance was attributed to the catalytic effect of Ag nanoparticles and the changing of the energy band gap.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Fuqiang Guo, Cheng Feng, Zheng Zhang, Lili Zhang, Chang Xu, Congting Zhang, Shuang Lin, Huanxing Wu, Baohua Zhang, Aersi Tabusi, Yineng Huang
Summary: In this study, Ti3C2Tx/CuO nanocomposites were successfully prepared through an environmentally friendly and simple hydrothermal method. The synthesized materials were characterized using various techniques, including XRD, SEM, TEM, XPS, FTIR, UV-vis, and BET. The results showed that Ti3C2Tx/CuO nanocomposites exhibited a mesoporous structure and a higher specific surface area compared to Ti3C2Tx, indicating the presence of more gas adsorption/diffusion regions. The introduction of CuO led to Ti3C2Tx having rich oxygen vacancies and adsorbed oxygen. The Ti3C2Tx/CuO sensor showed superior gas sensing performance, including a significantly higher response to 50 ppm NO2, ultra-fast response/recovery time, great reversibility, outstanding selectivity to NO2, and desirable long-term stability. The enhanced gas sensing performance can be attributed to the hybrid heterojunctions formed between CuO and Ti3C2Tx, which facilitate carrier migration and accelerate the redox reaction. The presence of more oxygen vacancies and adsorbed oxygen in Ti3C2Tx/CuO further enhances the gas sensing performance. These improved gas sensing performance indicators modified with CuO are expected to be advantageous for the development of Ti3C2Tx-based sensors for commercial NO2 detection in the future.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Electrical & Electronic
Y. H. Navale, S. T. Navale, M. A. Chougule, N. S. Ramgir, V. B. Patil
Summary: This study investigates the selective detection of NO2 gas by CuO/ZnO heterostructured sensors at low temperatures, demonstrating successful detection at 150 degrees Celsius with good response, stability, and reproducibility. The main objective is to understand the interaction between NO2 gas and CuO/ZnO heterostructured sensing materials for the detection of toxic gases.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Analytical
Shuang Qi, Lei Dai, Weiwei Meng, Yuehua Li, Ling Wang
Summary: Bi2O3 modified LSCF composites were successfully prepared and utilized as the sensing electrode of an amperometric NO2 sensor with YSZ electrolyte. The LSCF-20% Bi2O3 based sensor showed the highest sensitivity (0.301 mu A /ppm at 550 degrees C) among the different concentrations of NO2 tested (25-300 ppm). The LSCF-xBi2O3-SE sensors exhibited better sensitivity and anti-interference capability compared to the LSCF-based sensor.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Jifeng Chu, Qiongyuan Wang, Aijun Yang, Jianbin Pan, Yuyang Liu, Huan Yuan, Mingzhe Rong, Xiaohua Wang
Summary: A strategy for acquiring the optimal NO2-sensitive material was proposed and its effectiveness was verified through a series of tests. Based on comprehensive scoring, 10 wt% WO3-doped SnCl2-In2O3 material was found to be the optimum for NO2 detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Environmental
A. Govind, P. Bharathi, M. Krishna Mohan, J. Archana, S. Harish, M. Navaneethan
Summary: In the combustion of fossil fuels, the release of noxious gases is a concern, requiring the design of gas sensors with excellent performance and low power consumption. This study investigates the superior NO2 sensing characteristics of CuO and CuO/ZnO heterostructures at room temperature. The CuO/ZnO sensor exhibited high sensitivity, rapid response/recovery time, and low detection limit for NO2 gas, as well as good repeatability and stability. The increased sensitivity is attributed to the synergistic effect of CuO and ZnO, and the nanoporous heterostructure promotes NO2 gas adsorption and offers a large number of active sites.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Shubham Saini, Arvind Kumar, Sapana Ranwa, A. K. Tyagi
Summary: In this study, ZnO nanorods and Ag nanoparticles decorated ZnO nanorods were synthesized using a simple chemical hydrothermal route. Various characterization techniques were used to study the properties of the samples. The gas sensing measurements showed that the Ag/ZnO nanorods exhibited the highest sensing response to 10 ppm NO2 at a working temperature of 180 degrees C. These observations are significant for the detection of NO2 in the environment.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Applied
Chen Zhao, Yuehua Li, Zhangxing He, Yingqiao Jiang, Lu Li, Fengyun Jiang, Huizhu Zhou, Jing Zhu, Wei Meng, Ling Wang, Lei Dai
JOURNAL OF ENERGY CHEMISTRY
(2019)
Article
Electrochemistry
Meng Yao, Jing Zhu, Weiwen Meng, Chuanchang Li, Cong Li, Ling Wang, Zhen Jiang, Zhangxing He, Yuehua Li, Wei Meng, Huizhu Zhou, Lei Dai
ELECTROCHIMICA ACTA
(2019)
Article
Chemistry, Physical
Zhangxing He, Manman Li, Yuehua Li, Ling Wang, Jing Zhu, Wei Meng, Chuanchang Li, Huizhu Zhou, Lei Dai
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Analytical
Xu Li, Yongguang Liu, Lei Dai, Zhangxing He, Wei Meng, Yuehua Li, Ling Wang
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Analytical
Xu Li, Lei Dai, Zhangxing He, Wei Meng, Yuehua Li, Ling Wang
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Analytical
Chen Li, Wei Meng, Xiaodi Xu, Xiaoli Zhuang, Yuanyuan Wen, Ling Wang, Zhangxing He, Lei Dai
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Analytical
Xu Li, Lei Dai, Wei Meng, Yuehua Li, Ling Wang, Zhangxing He
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Physical
Yanrong Lv, Yuehua Li, Chao Han, Jiafu Chen, Zhangxing He, Jing Zhu, Lei Dai, Wei Meng, Ling Wang
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Chemistry, Physical
Dixuan Cheng, Mengran Tian, Boyun Wang, Jinliang Zhang, Jiafu Chen, Xiaojian Feng, Zhangxing He, Lei Dai, Ling Wang
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Chemistry, Analytical
Weiwei Meng, Lei Dai, Yuehua Li, Zhangxing He, Wei Meng, Huizhu Zhou, Ling Wang
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Analytical
Jianxin Ma, Lei Dai, Yongguang Liu, Wei Meng, Yuehua Li, Zhangxing He, Huizhu Zhou, Ling Wang
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Analytical
Weiwei Meng, Ling Wang, Huizhu Zhou, Yongguang Liu, Lei Dai
Summary: Impedimetric NH3 sensors were fabricated using YSZ as solid electrolyte and spinel-type oxide as sensing electrode. NiFe2O4 showed the best performance as the sensing electrode material. By adjusting the loading amount and calcination temperature of NiFe2O4, the sensor's performance was optimized and exhibited the best performance at 600 degrees C.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Yuehua Li, Shaoxian Li, Xu Li, Weiwei Meng, Lei Dai, Ling Wang
Summary: The electrochemical exsolution method for preparing e-ANO sensing electrode enhances the sensing signal, sensitivity, and detection limit of NH3 sensor compared to the ANO-SE based sensor. The sensor based on e-ANO sensing electrode exhibits excellent sensing performance, reproducibility, selectivity, and long-term stability due to Ag exsolution.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Qing-Chun Jiang, Jin Li, Yu-Jie Yang, Yu-Jie Ren, Lei Dai, Jia-Yi Gao, Ling Wang, Jia-Ye Ye, Zhang-Xing He
Summary: SnO2 with controllable structure is uniformly distributed on the surface of graphite felt by hydrothermal method and thermal treatment using Sn-MOF as precursor. This composite electrode provides stable active centers for redox reactions, resulting in high energy efficiency and good cycle stability in vanadium redox flow battery.
Article
Electrochemistry
Yanrong Lv, Lu Zhang, Gang Cheng, Pengfei Wang, Tianze Zhang, Chuanchang Li, Yingqiao Jiang, Zhangxing He, Lei Dai, Ling Wang
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)
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)
