Article
Physics, Multidisciplinary
N. S. Hosseini, J. Hasanzadeh, A. Abdolahzadeh Ziabari
Summary: ZnO-GO and ZnO-rGO composites were prepared through an economic and facile route in this study, and their gas sensitivity towards ethanol was comparatively studied, revealing that ZnO-GO-based sensor exhibited higher sensitivity. The response and recovery time were found to be dependent on the surface morphology.
ACTA PHYSICA POLONICA A
(2022)
Article
Chemistry, Analytical
Lijia Zhao, Shupeng Sun, Su Zhang, Zhi Liu, Baoyu Huang, Nan Wang, Jianwei Zhang, Xiaogan Li
Summary: The hollow ZnO@TiO2 heterostructured nanospheres were successfully synthesized by hydrothermal method, and the response and recovery time of the sensor towards formaldehyde were significantly improved by UV activation.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Xiaohu Wang, Shichao Wang, Huiyong Wang, Gaoqun Qiao, Wendi Liu, Ya Xiong, Jian Tian, Nannan Wu, Xinzhen Wang
Summary: The space charge region formed through electron transfer at the heterointerface in spherical heterostructure materials is beneficial for enhanced gas sensing performance. The positions of the two materials in the spherical structure have a significant influence on its performance. By investigating the effects of electron transfer direction, it was found that the structural design and electron transfer direction play important roles in the gas sensing properties of heterostructure materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Wei Wei, Huanhuan Zhang, Tiyue Tao, Xiaohong Xia, Yuwen Bao, Manon Lourenco, Kevin Homewood, Zhongbing Huang, Yun Gao
Summary: In this work, a carbon monoxide sensor based on the CuO/TiO2 heterojunction was designed and fabricated. The sensor exhibits high sensitivity to CO at room temperature due to the good adsorption properties of CuO materials and the heterojunction interface charge transfer. The interference from H-2 is greatly reduced by optimizing the structure of the CuO/TiO2 heterojunction.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Rishuang Jing, Abraar Ibni Khursheed, Jia'an Song, Li Sun, Zhichao Yu, Zhongquan Nie, Ensi Cao
Summary: The synthesis of sensing materials with suitable morphology and microstructure is crucial for fabricating acetone sensing devices. In this study, different morphologies of ZnO were prepared by adjusting the reactant ratio. The different morphologies exhibited different response performances and selectivity towards acetone.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Zhengyang Chen, Fubin Fu, Jing Cao, Ling An, Kaihua Zhang, Quan Chen
Summary: We designed and prepared a functional carbon material AHC (acetylenic acid-hexamethylene diamine-carbon) using alkynyl acid and cyclohexadiene as raw materials, which was loaded on ZnO@NiO to prepare an acetone gas sensor. The optimal amount of AHC on ZnO@NiO was found to be 0.12% and the best working temperature was 200 degrees C. Compared to the ZnO@NiO sensor, the ZnO@NiO@AHC sensor for 100 ppm acetone gas showed a maximum response value of 49.08, which was twice as high. The minimum detection limit was 1 ppm and there was an approximate linear relationship between concentration and sensitivity in the range of 1-300 ppm.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Polymer Science
Bing-Chiuan Shiu, Yan-Ling Liu, Qian-Yu Yuan, Ching-Wen Lou, Jia-Horng Lin
Summary: In this study, wearable and highly sensitive gas sensors were prepared using electrospinning technology and in situ polymerization. The gas sensitivity of the PVP/PEDOT:PSS/TiO2 micro/nanofiber sensors was found to be higher compared to other materials tested. The sensors showed a linear relationship between gas sensitivity and relative humidity below 75%.
Article
Chemistry, Analytical
Jaebum Park, Jihoon Lee, Myung Sik Choi, Jeung-Soo Huh
Summary: Gas sensors capable of measuring various volatile organic compounds, gas, and formaldehyde gas were fabricated in this study due to their harmful effects on the human body. By performing Pt coating on the alumina substrate and fabricating Zn seed layers, nanostructures were formed through sonochemical synthesis by adjusting the ratio of ZnO and TiO2. The reactivity and recovery properties were compared and evaluated based on the concentration of formaldehyde and toluene gas, and the ZnO(99%)-TiO2(1%) gas sensor showed significant selectivity for formaldehyde gas by optimizing the ZnO-TiO2 nanostructure.
Article
Chemistry, Analytical
Xiang Yu, Xiangdong Chen, Xing Ding, Kun Tang, Xuan Zhao, Fang Liu
Summary: A low-cost room temperature ethanol gas sensor is developed by connecting interdigital electrodes (IDEs) coated with ZnO/WSe2 nanocomposite film in series with a quartz crystal resonator (QCR). The change in ethanol gas concentration is converted into a frequency shift of the quartz resonator to generate a quasi-digital signal. Compared with pure ZnO IDEs-QCR sensor, the sensitivity of ZnO/WSe2 IDEs-QCR sensor is significantly improved (4.87 Hz/ppm) in the ethanol concentration range of 0-400 ppm, mainly due to the introduction of WSe2 with good conductivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Electrical & Electronic
V. L. Patil, D. S. Dalavi, S. B. Dhavale, N. L. Tarwal, S. A. Vanalakar, A. S. Kalekar, J. H. Kim, P. S. Patil
Summary: This report focuses on the deposition of nanocrystalline aluminium doped ZnO (Al doped ZnO: AZO) samples on seeded glass substrates using a cost-effective reflux method. The doping concentration of 'Al' ions ranged from 1 to 3 vol%. The study found that the deposited AZO samples exhibited a wurtzite hexagonal crystal structure and the formation of nanorods for undoped ZnO, with a reduction in diameter and the formation of fine tips for AZO samples. The photoluminescence study confirmed the presence of oxygen vacancies and defects in the AZO samples. Furthermore, the AZO samples demonstrated excellent gas sensing performance towards NO2 gas at a temperature of 175 degrees C, with a gas sensitivity of 85% for 5 ppm NO2 gas. This work shows promise for practical applications in the gas sensor technology field, particularly for low detection limits at low operating temperatures.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Engineering, Electrical & Electronic
Jing Liu, Yuanze Xu, Futing Yi
Summary: In this study, ZnO nanowires/TiO2 nanowires/Si micropillars structures were successfully fabricated on the surface of silicon micropillars, and applied to gas sensors. The structure showed an increased response to ethanol compared to the ZnO nanowires/Si micropillars structure.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Shiyu Zhou, Wenjun Yan, Min Ling, Chengdu Liang
Summary: A facile solution reduction method was used to modulate the oxygen vacancies of ZnO nanosheets, resulting in enhanced hydrogen sensing properties with significantly reduced operating temperature (150 degrees C), higher response (around 38.2 for 200 ppm), lower limit of detection (55 ppb), and quick recovery speed (only 6 s). The increased molecule adsorption and narrower band gap generated by controlled oxygen vacancies contribute to the superior sensing properties. The oxygen vacancy engineering strategy of pure metal oxide semiconductor-based materials shows great potential for creating low-temperature high-response sensors.
INORGANIC CHEMISTRY FRONTIERS
(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
Engineering, Electrical & Electronic
Chandrabhan Patel, Sumit Chaudhary, Vikash Kumar Verma, Mayank Dubey, Sharath Sriram, Shaibal Mukherjee
Summary: In this study, pristine WO3 and Pd-loaded WO3 were synthesized using a simple hydrothermal method and integrated with an IoT-enabled portable resistance readout circuit for real-time sensing of H2S. Various characterizations were performed to investigate the crystal structure, surface morphology, active surface area, and elemental composition of the synthesized materials. The sensor showed improved sensing response towards H2S with the loading of 0.25 and 0.5 mol% Pd, but a reduction in response was observed with further loading of 1 mol% Pd.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Paulina Listewnik, Mikhael Bechelany, Pawel Wierzba, Malgorzata Szczerska
Summary: This study introduced a microsphere-based fiber-optic sensor with ZnO Atomic Layer Deposition coating thicknesses of 100 nm and 200 nm for temperature measurements. The investigated sensors showed high linearity and sensitivity, with R-2 coefficients exceeding 0.99 and sensitivities of 103.5 nW/degrees C and 19 pm/degrees C or 11.4 nW/degrees C for ZnO thickness of 200 nm and 100 nm, respectively.
Article
Materials Science, Multidisciplinary
Wan Zhang, Changsheng Xie, Guozhu Zhang, Jian Zhang, Shunping Zhang, Dawen Zeng
MATERIALS CHEMISTRY AND PHYSICS
(2017)
Article
Materials Science, Multidisciplinary
Haitao Li, Kun Zhao, Shouqin Tian, Dawen Zeng, Aimin Pang, Xiaoxia Wang, Changsheng Xie
Article
Materials Science, Multidisciplinary
Jia Zhang, Dawen Zeng, Hao Wang, Ziyu Qin, Aimin Pang, Changsheng Xie
Article
Chemistry, Physical
Jian Zhang, Ziyu Qin, Dawen Zeng, Changsheng Xie
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2017)
Article
Chemistry, Analytical
Jian Zhang, Jinjin Wu, Xiaoxia Wang, Dawen Zeng, Changsheng Xie
SENSORS AND ACTUATORS B-CHEMICAL
(2017)
Article
Chemistry, Physical
Wenfei Li, Yunxiang Chen, Song Wu, Jian Zhang, Hao Wang, Dawen Zeng, Changsheng Xie
APPLIED SURFACE SCIENCE
(2018)
Article
Nuclear Science & Technology
Yi-Chuan Liao, Dui-Gong Xu, Peng-Cheng Zhang
NUCLEAR SCIENCE AND TECHNIQUES
(2018)
Article
Nuclear Science & Technology
Yi-Chuan Liao, Dui-Gong Xu, Peng-Cheng Zhang
NUCLEAR SCIENCE AND TECHNIQUES
(2018)
Article
Chemistry, Analytical
Tingting Zhou, Yutong Sang, Xiaoxia Wang, Congyi Wu, Dawen Zeng, Changsheng Xie
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Analytical
Ziyu Qin, Keng Xu, Huacong Yue, Hao Wang, Jian Zhang, Chao Ouyang, Changsheng Xie, Dawen Zeng
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Analytical
Jian Zhang, Die Hu, Shouqin Tian, Ziyu Qin, Dawen Zeng, Changsheng Xie
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Multidisciplinary
Minghui Li, Wulin Song, Lei Zeng, Dawen Zeng, Changsheng Xie, Qun Yang
Article
Chemistry, Multidisciplinary
Xiafen Hu, Xiaoxia Wang, Xin Hu, Changsheng Xie, Dawen Zeng
CHEMICAL COMMUNICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Tingting Zhou, Ziyu Qin, Xiaoxia Wang, Congyi Wu, Xing Tang, Tian Zhang, Hao Wang, Changsheng Xie, Dawen Zeng
CHEMICAL COMMUNICATIONS
(2019)
Article
Chemistry, Inorganic & Nuclear
Kun Zhao, Haitao Li, Shouqin Tian, Wenjuan Yang, Xiaoxia Wang, Aimin Pang, Changsheng Xie, Dawen Zeng
INORGANIC CHEMISTRY FRONTIERS
(2019)
