Article
Chemistry, Physical
Wei Liu, Zaiping Chen, Xiaohui Si, Haifeng Tong, Junmeng Guo, Zhiheng Zhang, Jiahang Huo, Gang Cheng, Zuliang Du
Summary: Low temperature and high sensitivity are important for gas sensors, but they are usually contradictory. In this study, ZnO porous nanowires doped with Pt nanoparticles were prepared and their gas-sensing performance for acetone was investigated. The results showed that the Pt-ZnO PNWs exhibited improved response and lower detection limit compared to pristine ZnO PNWs, making them a potential breath analyzer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Mengzhu Liu, Junhao Hu, Hongwei Wang, Yongpeng Wang
Summary: This study focuses on the preparation and characterization of a series of carbon nanofibers/ZnO/TiO2/Ti(3)C(2)Tx composites with flower-branch hierarchical architecture for electromagnetic wave absorption. The composites showed enhanced absorption performance due to their unique morphology and component design.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Tao -Tao Wu, Li -Yuan Zhu, Xue-Yan Wu, Xiao-Yong Miao, Li-Wen Mao, Xuan-Hong Jin, Hong-Liang Lu
Summary: In this study, hierarchical Nb2O5@ZnO hetero-branched nanorods were synthesized for highly responsive, selective, and stable H2S sensors. These sensors showed excellent response at the optimal working temperature and maintained steady performance over a month, indicating their potential for sensitive and selective H2S detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Applied
Min Young Kim, Jeong Yun Hwang, Ali Mirzaei, Sun-Woo Choi, Sang-il Kim, Hyun-Sik Kim, Sun-Jae Kim, Jong Wook Roh, Myung Sik Choi, Kyu Hyoung Lee, Seung Yong Lee, Changhyun Jin
Summary: In this study, a simple and scalable synthesis route was developed to prepare Ag-functionalized porous ZnO sheets, which exhibited enhanced NO2 gas sensing properties. The porous ZnO sheets were functionalized with well-dispersed submicron Ag particles using a hydrothermal method-based one-pot synthesis route. The gas sensor fabricated with 3 at% Ag-functionalized porous ZnO sheets showed optimized NO2 gas sensing performance at 200 degrees C, with a high response of 17.18 to 10 ppm NO2 gas and a response of 14.05 even at 60% relative humidity, attributed to the synergistic effect of improved NO2 gas adsorption and increased resistance at Ag-ZnO heterojunctions.
ADSORPTION SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
D. Simon Patrick, A. Govind, P. Bharathi, M. Krishna Mohan, S. Harish, J. Archana, M. Navaneethan
Summary: In this study, ZnO/g-C3N4 nanocomposites were synthesized using a simple hydrothermal method, and their properties were analyzed using various characterization techniques. The results show that the addition of 30% g-C3N4 significantly improves the response rate and rapid response and recovery time of the ZnO nanocomposite at 180 degrees Celsius.
APPLIED SURFACE SCIENCE
(2023)
Article
Crystallography
Mohammad R. Alenezi, Abdullah M. Almeshal
Summary: Developing new bottom-up fabrication methods to control the physical properties of active materials for high-performance devices is essential. The hydrothermal method reported in this article produces ZnO bridging nanowire sensors without the need for a seed layer and with site-selectivity. By controlling the growth environment, the performance of the sensors is enhanced, with improved sensitivity to acetone gas and faster response and recovery times.
Article
Chemistry, Analytical
Teena Gakhar, Yossi Rosenwaks, Arnab Hazra
Summary: This study found that decorating fullerene-C-60 with various oxygen-containing groups on highly oriented TiO2 nanotubes array can efficiently detect volatile organic compounds (VOCs), especially formaldehyde. Composite materials were prepared by varying the concentrations of C-60 and hydrothermal route. The developed nanocomposites showed increased effective surface area and natural selectivity towards formaldehyde, with high sensitivity and fast response/recovery times. The sensors covered a detection range from 100 ppm to 100 ppb, making them highly promising for VOCs detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Chen Su, Lu Zhang, Yutong Han, Cong Ren, Bolong Li, Tao Wang, Min Zeng, Yanjiu Su, Nantao Hu, Zhihua Zhou, Ying Wang, Zhi Yang, Lin Xu
Summary: A novel flower-like hierarchical NiO-ZnO heterostructure was synthesized using a one-step hydrothermal method with the assistance of glucose and further calcination treatment. Gas sensors based on this heterojunction showed excellent response and stability for glycol detection at relatively low operating temperature. This work demonstrates a great potential for efficient glycol gas detection by directly synthesizing G-NiO-ZnO heterojunction in a one-step approach.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Ceramics
Maryam Bonyani, Seyed Mojtaba Zebarjad, Kamal Janghorban, Jin-Young Kim, Hyoun Woo Kim, Sang Sub Kim
Summary: Composite nanofibers of ZnO-PANI were synthesized for NO2 gas sensing. The addition of different weight percentages of PANI to electrospun ZnO nanofibers was explored. The composites showed good thermal, structural, chemical, and morphological properties. The sensor with 25 wt % PANI exhibited the best response to NO2 gas at 300 degrees C, showing great potential for NO2 gas sensing.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Kurugundla Gopi Krishna, Saidi Reddy Parne, P. Nagaraju
Summary: This paper presents the synthesis and gas-sensing characteristics of pure ZnO, TiO2 nanoparticles, and ZnO/TiO2 nanocomposite for detecting acetone at room temperature. The nanocomposite exhibits a combined phase structure and better performance compared to the pure nanoparticles. It shows excellent selectivity, quick response-recovery, and high sensitivity towards acetone detection, making it a promising material for diabetes screening.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Engineering, Environmental
Chandra Bhan, Animes Kumar Golder
Summary: In this study, hierarchical 2D vertically aligned nanostructures (VANs) of ZnO were synthesized using a bioinspired method for electrocatalytic sensing. The ZnO-VANs showed excellent performance in electrochemical sensing.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Zengyao Wang, Bin Ai, Yuduo Guan, Yu Wang, Gang Zhang
Summary: The study demonstrates a method of growing Ag nanoislands on large-scale plasmonic nanostructures by simple LED irradiation, with the size and density of the nanoislands being adjustable. This surface modification technique shows promise for high-performance SERS substrates and applications like glucose detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Xin Lv, Caihui Feng, Tingting Lin
Summary: This paper investigates the ability of boron (B) as a dopant in TiO2 nanofibers for use in humidity sensing. The influences of B content on the phase transition, specific surface area, morphology, and surface valence of TiO2 nanofibers are studied. The results show that B is successfully incorporated into the TiO2 lattice using interstitial mode, inducing an increase in humidity sensitivity. The B-doped TiO2 nanofibers based on the optimum B/Ti molar ratios exhibit high sensitivity, quick response and recovery time, and favorable repeatability and stability.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Multidisciplinary
Jean-Francois Bryche, Marlo Vega, Agnes Tempez, Thibault Brule, Thomas Carlier, Julien Moreau, Marc Chaigneau, Paul G. Charette, Michael Canva
Summary: This work demonstrates the enhancement in plasmonic sensing efficacy by spatially-localized functionalization on nanostructured surfaces, where probe molecules are concentrated in areas of high field concentration. SERS measurements on nanostructured surfaces with homogeneous and spatially-localized functionalization with thiophenol show that the Raman signal mainly originates from high field concentration areas. TERS measurements with 10 nm spatial resolution confirm the predicted field distribution profiles.
Article
Chemistry, Multidisciplinary
Yu-Jiao Xia-Hou, Yu Yu, Jun-Rong Zheng, Jun Yi, Jing Zhou, Ting-Xiao Qin, En-Ming You, Hai-Long Chen, Song-Yuan Ding, Li Zhang, Kai-Li Chang, Ke Chen, Martin Moskovits, Zhong-Qun Tian
Summary: This study proposes a novel method to achieve high near-field intensity in a wide range of infrared band using graphene coated manganous oxide microwires featuring hierarchical nanostructures. The near-field intensity and IR absorption of these microwires are significantly enhanced compared to microwires with smooth surfaces. The study demonstrates the potential of these microwires for vibrational sensing of small organic molecules and high photoresponse.
Article
Chemistry, Physical
Zhimin Yang, Yaqing Zhang, Liang Zhao, Teng Fei, Sen Liu, Tong Zhang
Summary: This study reports the synergistic effects of oxygen vacancy engineering and surface gold decoration on the detection of organophosphorus compounds. By optimizing the composition and structure of the sensing materials, high sensitivity and fast response to organophosphorus compounds are achieved. The Au nanoparticles decorated oxygen vacancy-enriched SnO2 hybrids show excellent sensing performances for the detection of dimethyl methyl phosphonate (DMMP), paving a new way for the fabrication of metal oxides-based gas sensors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Xiuzhu Lin, Yu Bing, Fan Li, Haixia Mei, Sen Liu, Teng Fei, Hongran Zhao, Tong Zhang
Summary: This study presents a breathable and lightweight all-nanofiber piezoresistive sensor for real-time monitoring of physiological signals. The sensor is composed of three layers of electrospun nanofibers and utilizes a specific interpenetrating network of conductive and insulating nanofibers to enhance sensitivity. The sensor has excellent breathability and heat dissipation, ensuring comfort and stability during long-term wearing. It also demonstrates potential applications in spatial pressure detection.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Physical
Shang Gao, Zhimin Yang, Yaqing Zhang, Liang Zhao, Yunpeng Xing, Teng Fei, Sen Liu, Tong Zhang
Summary: The electrochemical sensors for chloramphenicol (CAP) detection have been widely studied and applied in the field of food safety due to their fast detection speed, high sensitivity, and easy operation. In this study, a high-performance electrochemical CAP sensor based on MoS2 modified reduced graphene oxide (MoS2-rGO) hybrids was developed. The MoS2-rGO hybrids exhibited better sensing performances compared to sensors based on MoS2 or rGO alone. The synergistic effects of MoS2 and rGO contributed to the enhanced sensing performances.
Article
Engineering, Electrical & Electronic
Xin Guan, Yunlong Yu, Ke Wu, Zhaonan Hou, Zhiyan Ma, Xiaoya Miao, Teng Fei, Tong Zhang
Summary: This study proposes humidity sensors based on in situ crosslinked ionogels, which exhibit high sensitivity and good stability through the construction of stable ionogels and the introduction of humidity sensitive electrolyte.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Analytical
Zhimin Yang, Liang Zhao, Yaqing Zhang, Yunpeng Xing, Teng Fei, Sen Liu, Tong Zhang
Summary: This research proposes a facile and efficient colloidal assembly approach to prepare Au modified SnO2 hybrids (Au-SnO2) with perfect metal-semiconductor interface for DMMP detection. The optimized DMMP sensors based on Au-SnO2 hybrids exhibit excellent sensing performances, including high response, low operating temperature, extremely low limit of detection, and short response/recovery time. The synergy of chemical oxidation and physical adsorption between Au-SnO2 hybrids and DMMP is found to be the main reason for the outstanding sensing performances. This work provides insight into the DMMP sensing mechanism and offers a promising general approach for the development of high-performance gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Tianwen Ouyang, Xue Guo, Qihao Cui, Wei Zhang, Wenyue Dong, Teng Fei
Summary: The sensitive detection of nitroaromatic explosives, such as 2,4,6-trinitrophenol (TNP), is greatly important for national security and human health. In this study, novel linear and cross-linked polymers based on anthracene and tetraphenylethene groups were successfully synthesized and used for the detection of nitroaromatics in aqueous phase. The polymers showed high sensitivity and selectivity towards TNP, making them promising candidates for fast, low-cost, and on-site detection of nitroaromatic explosives.
Article
Engineering, Electrical & Electronic
Ke Wu, Xiaoya Miao, Zhiyan Ma, Zhaonan Hou, Yunlong Yu, Xin Guan, Hongran Zhao, Sen Liu, Teng Fei, Tong Zhang
Summary: In this study, a strongly hydrophilic ionic liquid was incorporated into metal organic frameworks to prepare low humidity sensors. The optimized sensor exhibited high response, small hysteresis, good long-term stability, fast response time, and high resolution, making it a potential humidity sensitive material for high performance low humidity sensors.
IEEE ELECTRON DEVICE LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Ke Wu, Xiaoya Miao, Yunlong Yu, Zhiyan Ma, Zhaonan Hou, Teng Fei, Tong Zhang
Summary: In this work, highly sensitive low-humidity sensors based on Au nanoparticles-modified sulfonate metal-organic frameworks (MOFs) were constructed, and the sensor was applied in low-humidity detection. The small Au nanoparticles enhance the hydrophilicity of the sensing material and catalyze the decomposition of water molecules, leading to a high response of the sensor in the humidity range of 5% RH-30% RH. The as-prepared sensor exhibits high sensitivity, good linearity, and long-term stability, making it suitable for the monitoring of humidity in biscuit storage environments.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Zhiyan Ma, Teng Fei, Tong Zhang
Summary: Humidity is a physical quantity that measures the concentration of water vapor in the air. Humidity sensors are widely used in various fields due to their advantages of portability, easy fabrication, low cost, high sensitivity, and fast response. However, developing high-performance low humidity sensors still faces challenges due to the small amount of water molecules they can adsorb and the limitations of harsh environments. This paper reviews the research progress of low humidity sensors for nearly three decades, including the necessity of low humidity detection, measurement methods, and different types of sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Review
Chemistry, Multidisciplinary
Ke Wu, Teng Fei, Tong Zhang
Summary: Metal-organic frameworks (MOFs) and their derivatives are promising humidity-sensing materials with large specific surface area, high porosity, and high stability. However, challenges such as poor film formation, low electrical conductivity, and limited hydrophilicity need to be overcome. By reviewing related published work, we can understand the development of these sensors and propose future research directions.
Article
Chemistry, Analytical
Zhaonan Hou, Zhiyan Ma, Xin Guan, Hongran Zhao, Sen Liu, Teng Fei, Tong Zhang
Summary: Capacitive humidity sensors fabricated with ionic liquid/cellulose nanofibers exhibited high sensitivity and fast response characteristics, offering accurate monitoring in a wide humidity range. The high response was attributed to interface polarization, while the fast recovery was due to rapid water molecule desorption on the sensing films. Applied in human breath monitoring, the sensors showed promising potential.
Article
Chemistry, Multidisciplinary
Ke Wu, Yanyu Cui, Yaping Song, Zhiyan Ma, Juan Wang, Juan Li, Teng Fei, Tong Zhang
Summary: Inspired by the neuron system, a self-powered neuron system-like hydrogel based on gelatin, water/glycerin, and ionic liquid modified metal organic frameworks (MOFs) is prepared. The optimized hydrogel exhibits excellent properties and can detect pressure and humidity with dual-modal output without external power source.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Analytical
Zhimin Yang, Liang Zhao, Yaqing Zhang, Yunpeng Xing, Zefeng Wei, Congcong Xin, Teng Fei, Sen Liu, Tong Zhang
Summary: An isolated Cu-N5 sites engineering strategy was used to improve the sensing performances of PPy-rGO-based room-temperature DMMP sensors. The construction of Cu-N5 sites enhanced hydrogen bonding interactions and served as new active sites for DMMP adsorption. This work offers a new avenue for developing high-performance room-temperature gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Optics
Chunxue Wang, Daming Zhang, Jian Yue, Hang Lin, Xucheng Zhang, Tong Zhang, Changming Chen, Teng Fei
Summary: In this work, on-chip three-dimensional photonic integrated optical sources based on active fluorescent polymer waveguide microdisks are proposed for light display application. By doping fluorescent green and red oligomers with high-efficiency photoluminescence into epoxy crosslinking SU-8 polymer as the waveguide gain medium, microdisk-based on-chip optically pumping light sources are designed and fabricated. The approach could realize the monolithically on-chip assembled vertical and horizontal bright emitters, and has great potential for achieving 3D integrated light display application.
Article
Chemistry, Physical
Yaqing Zhang, Zhimin Yang, Liang Zhao, Yunpeng Xing, Congcong Xin, Zefeng Wei, Teng Fei, Sen Liu, Tong Zhang
Summary: Through the synergy of Pd nanoparticles and oxygen vacancies, the sensitivity of room-temperature NO2 sensors is improved by modulating the surface active sites on SnO2 modified reduced graphene oxide hybrids.
APPLIED SURFACE SCIENCE
(2023)
