Article
Chemistry, Analytical
Ruyi Yang, Jinniu Zhang, Jia Liu, Gang Li, Yu Qiao, Xinyi Zhang, Jianzhi Gao, Hongbing Lu
Summary: This study constructed a flexible sensor based on mesh PANI/Ti3C2Tx composite nanofibers, which exhibited excellent performance in NH3 sensing response and flexible bending stability. The improved sensing properties can be attributed to the formation of Schottky junctions between PANI and Ti3C2Tx nanosheets, improved protonation degree of PANI, and the special three-dimensional mesh fiber structure.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Nanoscience & Nanotechnology
Soobin Kim, Juyun Lee, Sehyun Doo, Yun Chan Kang, Chong Min Koo, Seon Joon Kim
Summary: MXenes are promising materials for functional transparent thin films due to their high conductivity, transparency, and two-dimensional morphology. Intercalation of metal ions into MXene films through a spontaneous self-assembly method enhances film properties and device performance, with potential applications in gas sensing.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Sonia Freddi, Daniele Perilli, Luca Vaghi, Mauro Monti, Antonio Papagni, Cristiana Di Valentin, Luigi Sangaletti
Summary: This study presents an easy and cost-effective method to functionalize graphene through thermally activated dimerization of 2,5-diaryltetrazoles, and introduces the use of tetrazoles to prepare graphene-based chemiresistors. The tests show that this method is sensitive to ammonia and the sensors perform better than bare graphene.
Article
Chemistry, Analytical
Peilun Qiu, Yuxiang Qin, Qing Xia
Summary: A TiO2-based gasistor with bipolar resistive switching behavior was proposed for sensitive detection of NH3, showing excellent repeatability and stability. It can switch from a high resistance state to a low resistance state as the NH3 concentration decreases, recording the leakage time. The gasistor model provides a reference for predicting gas-triggered voltage and compliance voltage.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Yang Chen, Lingmin Yu, Hongbo Du, Chonghao Hu, Nan Liu, Shuai Ma, Yu Jia, Xinhui Fan
Summary: TiO2 is proven to be a promising material for detecting various hazardous gases at high temperatures, and a strategy to synthesize flower-like TiO2 microspheres assembled by nanosheets has been reported. The selective adsorption of NH3 on TiO2 (001) indicates a stronger interaction in the NH3-TiO2 system, providing useful gas sensing materials for high-performance room temperature NH3 sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Environmental
Kaidi Wu, Marc Debliquy, Chao Zhang
Summary: This study developed a series of Ce doped TiO2 nanocrystals for ammonia detection at room temperature, showing high performance in terms of response, detection limit, selectivity, repeatability, and stability. The enhanced sensing mechanism was explained by the synergetic effects of re-orientated high energy facets, oxygen vacancy, and large specific surface area. Furthermore, the practical application potential in fish freshness detection was also evaluated.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Sukhwinder Singh, Jyotirmoy Deb, Utpal Sarkar, Sandeep Sharma
Summary: The research team developed a MoS2/MoO3 composite with enhanced surface properties using a two-step approach, which exhibited superior sensing characteristics as a gas sensor in detecting NH3 under extreme working conditions. The synergistic effect of heterostructure formation between the base materials contributed to the selective response of the composite towards NH3 gas in humid environments.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Lun Tan, Xianzhen Liu, Peng Wu, Liwei Cao, Wei Li, Ang Li, Zhao Wang, Haoshuang Gu
Summary: The research and development of high-performance NH3 sensors is important for environment monitoring and disease diagnosis applications. TiO2-modified monolayer MoS2 films with controllable TiO2 loading contents were fabricated and showed enhanced room-temperature NH3 sensing performance. The TiO2/MoS2 system with 95% surface coverage of TiO2 exhibited improved sensor response, low detection limit, wide detection range, good repeatability, and superior selectivity against other gases. The TiO2 modification improved the surface reactivity of the sensing layers and acted as gas-gating layers to modulate the electron depletion layer and the conductivity of the MoS2 films, resulting in improved NH3 sensing performance. This n-n hetero-compositing strategy provides a simple and cost-effective approach for developing high-performance NH3 sensors based on 2D semiconductors.
Article
Polymer Science
Dongzi Yang, Guan Sheng, Jie Lu, Xiaoling Tong, Shuo Li, Xingyu Jiang, Liang Zhang, Jinrong Luo, Yanyan Shao, Zhou Xia, Lizhen Huang, Lifeng Chi, Yuanlong Shao
Summary: Recently, 2D conducting polymer thin films have gained attention for their ability to combine molecular aggregate ordering and in-plane charge transport. This study successfully developed wafer-size polyaniline and tetra-aniline thin films with customized surface morphology and crystallinity through controlled interfacial synthesis. The optimized polyaniline thin film exhibited an ultraflat surface and clear crystalline domains, while also demonstrating impressive ammonia sensing capability.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Sang Won Lee, Hyo Gi Jung, Jae Won Jang, Dongsung Park, Dongtak Lee, Insu Kim, Yonghwan Kim, Da Yeon Cheong, Kyo Seon Hwang, Gyudo Lee, Dae Sung Yoon
Summary: Research on manufacturing graphene-based electronic textiles into two-dimensional sheets shows promising results in improved sensing performance, increased sensitivity to hazardous gases, and characteristics of being lighter and thinner. Furthermore, applying this technology to wearable devices can detect toxic environmental gases and monitor health through exhalation.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Changhui Zhao, Peijun Wang, Gaoqiang Niu, Dan Luo, Quan Wang, Fei Wang
Summary: This work presents the fabrication of room temperature NH3 gas sensors based on CuO/WS2 nanohybrids. The sensors demonstrate excellent NH3 sensing performance with high response and stability. Moreover, the CuO/WS2 sensors on PET substrate show potential for the development of flexible devices.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Applied
Jieyun Zhang, Xieraili Maimaitiyiming, Ablikim Obolda, Ying Luo
Summary: This study synthesized donor-accepter type conjugated polymers with fluorene, thiophene (side-chain imine-contained), and different molar ratios of pyrimidine to separate semiconductor single-walled carbon nanotubes (sc-SWCNTs) from commercially available plasma SWCNTs. The sc-SWCNTs were then used to build a gas sensor to detect low concentrations of ammonia vapor. The released sc-SWCNTs showed excellent selectivity and high purity, and the sensor exhibited rapid response and high sensitivity to ammonia vapor.
Article
Chemistry, Physical
Xiaolin Jiang, Yuhua Zhen, Yao Feng, Zhengren Yang, Zheng Qin
Summary: In this work, hydrothermally synthesized SnS2 nanosheets were calcined to form SnO2 nanoparticle decorated SnS2 nanosheets. The formed raisin cake SnS2/SnO2 complex increases the specific surface area and provides more contact area for gas molecule adsorption. The SnS2/SnO2 nanocomposite exhibits a high sensing response to 50 ppm NH3 and excellent response/recovery time at room temperature, demonstrating the material's effectiveness in NH3 gas detection.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zitong Kan, Fangyu Shi, Long Yang, Qingqing Zhou, Yuhong Zhang, Yu Qi, Huan Zhang, Biao Dong, Luquan Ren, Hongwei Song, Lin Xu
Summary: A bi-functional sensing platform based on Ti3C2Tx/In2O3 nanocomposites modified TPU foam sensor was constructed for the detection of gas and motion bio-signals of kidney diseases. The developed sensor exhibited the capability to detect NH3 gas as low as 1 ppm and accurately interpret human motion signals.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Electrical & Electronic
Ziyan Hu, Hongyan Zhang, Haiyang Zhang, Shuguo Yu, Jianping Man
Summary: A high performance NH3 sensor based on CeO2/In2O3 (CeIn) was synthesized using hydrothermal method. The heterogeneous structure of CeIn enhances the sensor's performance due to the presence of oxygen vacancies, free oxygen, and hydroxy (-OH) groups on its surface. The CeIn sensor shows a much higher response towards NH3 compared to In2O3 or CeO2 sensors, and has a fast response/recovery time and a low detection limit, making it suitable for monitoring meat freshness.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Thermodynamics
Mohammad Amin Vaziri Rad, Roghaye Ghasempour, Parisa Rahdan, Soroush Mousavi, Mehrdad Arastounia
Review
Energy & Fuels
Mohammad Dehghanimadvar, Reza Shirmohammadi, Milad Sadeghzadeh, Alireza Aslani, Roghaye Ghasempour
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Engineering, Chemical
Reza Shirmohammadi, Alireza Aslani, Roghayeh Ghasempour, Luis M. Romeo
Article
Thermodynamics
Mohammad Jalili, Roghayeh Ghasempour, Mohammad Hossein Ahmadi, Ata Chitsaz, Shahriyar Ghazanfari Holagh
Summary: The paper investigates the thermodynamic, economic, and environmental aspects of a system combining cooling, heating, and power generation powered by biomass and natural gas. It finds that mixing natural gas with syngas can improve efficiency and reduce cost and environmental impact.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Milad Ashouri, Mohammad H. Ahmadi, S. Mohsen Pourkiaei, Fatemeh Razi Astaraei, Roghaye Ghasempour, Tingzhen Ming, Javid Haj Hemati
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2018)
