Article
Chemistry, Analytical
Chunmei Shangguan, Mingli Dong, Guanghui Ren, Lidan Lu, Bao Yue Zhang, Qijie Ma, Kai Xu, Yihong Hu, Turki Alkathiri, Rui You, Chris F. McConville, Lianqing Zhu, Jian Zhen Ou
Summary: This study introduces a new method for creating angstrom-scale pores based on noble metals, successfully applied in Na+ ion sensing. The new structure shows high sensitivity to ion concentrations as low as subnanomolar levels and exhibits high selectivity under various conditions.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
P. P. Ortega, C. C. Silva, M. A. Ramirez, G. Biasotto, C. R. Foschini, A. Z. Simoes
Summary: ZnO nanostructures synthesized via the microwave-assisted hydrothermal method show superior photocatalytic and gas sensing performances, highlighting their potential for environmental applications such as water purification and air monitoring.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Kuo Zhan, Zhaolong Wang, Yabin Zhu, Jun Yan, Yunlin Chen
Summary: This paper proposes a nano-porous UIO-66-NH(2)/TiO(2) Bragg reflector sensor for highly sensitive, selective, and repetitive real-time detection of low concentration HCl gas. The sensor demonstrates a high sensitivity and fast optical response and recovery time, along with excellent selectivity among different gases. The UIO-66-NH(2)/TiO(2) sensor shows exceptional reversibility and reliability, indicating its potential for detecting low concentration HCl gas.
IEEE SENSORS JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Jiabao Ding, Zichen Zheng, Zihao Song, Shumei Ding, Jie Wen, Kewei Liu, Chao Zhang, Hongpeng Li
Summary: This review systematically discusses the recent advances in novel sensing materials based on 1D nanostructures for chemiresistive gas sensors. It covers various types of 1D nanostructures and different types of sensing materials. The review also explores the relationship between structure, morphology, and performance, as well as enhanced sensing mechanisms. It provides a brief outlook on future development perspectives.
MATERIALS & DESIGN
(2023)
Review
Chemistry, Physical
Y. Shi, X. Li, X. F. Sun, X. Shao, H. Y. Wang
Summary: Detection of ethanol is crucial in various fields due to its explosive, colorless and volatile nature. Metal oxide semiconductors (MOS) gas sensors, particularly those based on indium oxide (In2O3), have gained attention for their low cost and convenient detection. This paper summarizes the strategies used in the last decade to enhance the performance of In2O3-based gas sensors for ethanol detection, including morphology modification, doping, heterojunction construction, and the use of composite materials. The sensing mechanism for ethanol detection by gas sensors is also presented.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
R. Aysha Parveen, R. Ajay Rakkesh, D. Durgalakshmi, S. Balakumar
Summary: In this study, an efficient room-temperature gas sensor was synthesized using a microwave-assisted hydrothermal method, with a hybrid nanostructure composed of biomass-derived graphene nanosheets and Ag2S. The hybrid nanostructure showed higher hydrogen sensing efficiency than pure Ag2S nanoparticles, with a maximum response of 45.5% for 150 ppm exposure of hydrogen gas at room temperature. The fast response time and high gas sensitivity of the hybrid sensor were attributed to the diverse attributes and synergetic effect between Ag2S and GNS hybrids.
Review
Chemistry, Physical
Tingting Zhou, Tong Zhang
Summary: With the advancement of nanoscience and nanotechnology, nanomaterials with unique properties have gained more attention in the field of electronic sensors, especially in gas sensing devices. Recent achievements have led to a new wave of research in designing advanced sensing materials with different dimensional structures. The sensitivity and performance of these materials are closely related to their structure, electronic properties, and surface chemistry, influencing various gas sensing applications such as environmental monitoring and flexible wearable electronics.
Review
Chemistry, Multidisciplinary
Hui Ling Chia, Carmen C. Mayorga-Martinez, Martin Pumera
Summary: The rapid advancements in materials science, particularly nanoscience, have significantly contributed to the development of sensors, with 2D materials showing great potential for high-sensitivity sensor applications. Modification and doping of 2D materials can enhance sensor performance, allowing for fine-tuning of their properties and electronic structure.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Analytical
Jialin Yang, Ding Wang, Ming Li, Haitao Yu, Pengcheng Xu, Xinxin Li
Summary: This study successfully achieved high-sensitivity resonant-gravimetric detection of ppb-level NO2 gas at room-temperature using two-dimensional porous TiO2 nanosheets. The TiO2-500 degrees C sample exhibited higher sensitivity and adsorption enthalpy than the TiO2-800 degrees C sample, showing great potential for practical applications.
Article
Chemistry, Physical
Xiang Li, Huimin Yang, Xiaoxue Wang, Ziyu Qin, Xiafen Hu, Xiaoxia Wang, Changsheng Xie, Dawen Zeng
Summary: Porous two-dimensional WO3 nanosheets were synthesized and found to exhibit high sensitivity to H2S gas, with a response value 17 times higher than non-porous WO3 nanosheets. The study also revealed, for the first time, that the distinct structure pore edge has a positive influence on gas interaction through adsorption simulation using density functional theory. This work not only demonstrates the potential of WO3 PTNSs for H2S detection, but also clarifies the enhancement mechanism of edge effect on gas adsorption, providing a useful reference for applying porous nanosheets in gas sensors.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Hsu-Sheng Tsai, You Wang, Chaoming Liu, Tianqi Wang, Mingxue Huo
Summary: This review systematically introduced the properties of elemental two-dimensional materials beyond graphene and their application in gas sensing. It was found that these materials are effective in detecting carbon-, nitrogen-, and sulfur-based gases, as well as organic vapors. However, the challenge lies in the instability of these materials under atmospheric conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Analytical
Jiaqi Gao, Zhongqiu Hua, Shu Xu, Hao Wan, Zinan Zhi, Xinyi Chen, Shurui Fan
Summary: An amperometric gas sensor using room temperature ionic liquid electrolyte and screen-printed electrodes was developed in this study. The sensor demonstrated rapid response speed, high sensitivity, and wide operating temperature range, making it suitable for use in extreme environments.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Ik Jun Choi, Bum Jun Kim, Sang Hoon Lee, Byung Joo Jeong, Tuqeer Nasir, Yun Seong Cho, Noeul Kim, Jae-Hyun Lee, Hak Ki Yu, Jae-Young Choi
Summary: The reactivity of tellurium to NO2 gas can be controlled by adjusting the number of Te nanotube walls and lengths, and the gas detection performance is maintained even with increasing humidity.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Environmental
Jianhong Zhou, Ke Xue, Yaoda Liu, Tingting Liang, Pengfei Zhang, Xu Zhang, Wentao Zhang, Zhengfei Dai
Summary: In this study, two-dimensional SnS2 nanosheets doped with Mo were synthesized and used for the highly sensitive and selective detection of NO2. The Mo doping significantly enhanced the sensing response and revealed an abnormal p-n sensing transition characteristic.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Multidisciplinary
John Bentley, Salil Desai, Bishnu Prasad Bastakoti
Summary: Tungsten oxide (WO3) has attracted increasing attention over the past decade due to its low cost as a transition metal semiconductor with tunable band gaps. This minireview highlights the challenges in designing and synthesizing porous WO3, as well as its wide range of applications in various fields.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
