Related references
Note: Only part of the references are listed.
Article
Materials Science, Multidisciplinary
Weiguang Zhao et al.
Summary: To achieve a high-performance Triethylamine (TEA) sensor, researchers have designed and synthesized a heterostructure composed of WS2 and WO3 through hydrothermal method and thermal oxidation post-treatment. They found that the WO3/WS2 hybrid sensor, treated at 400 degrees C, exhibited superior sensing response towards TEA. By coating the sensor with polydimethylsiloxane (PDMS), the humidity resistive ability of the sensor was enhanced, resulting in reduced response variation in a wide range of relative humidity. The WO3/WS2 @PDMS sensor showed high response, superb linearity, high reproducibility, long-term stability, and good selectivity to TEA, making it a promising candidate for practical applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Indu Sharma et al.
Summary: In this study, two-dimensional tungsten disulfide (WS2) nanosheets decorated with tin oxide (SnO2) quantum dots were fabricated for detecting ammonia (NH3) gas. The WS2 nanosheet:SnO2 quantum dot ratio was adjusted to achieve maximum interfacial area and enhance the sensitivity of NH3 detection. The WS2/SnO2 heterostructure showed a superior response to 10 ppm NH3 with a response of -850% for a WS2:SnO2 ratio of 10:1. This led to high sensitivity (-175 % ppm-1) at low NH3 concentrations and a low limit of detection (-10 ppb). Understanding the electron transfer at the WS2-SnO2 interface could provide valuable insights for the development of heterostructured sensors for NH3 detection in industrial and medical fields.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Nanoscience & Nanotechnology
Sagar Sardana et al.
Summary: In this study, an architecture of an ammonia monitoring system is proposed, which can be used for real-time breath sampling and environmental gas sensing. The system utilizes a MXene/MoS2 nanosheet heterostructure as both a sensing material and an active layer of a hybrid tribo-/piezonanogenerator, allowing for self-powered monitoring of NH3. The sensor exhibits high selectivity, reversibility, and sensitivity to NH3 gas and the H-TPNG generates triboelectric and piezoelectric power densities through mechanical tapping and bending motions. Overall, this research presents a self-powered NH3 monitoring system that can be integrated into wearable monitors for healthcare applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Fangjie Qin et al.
Summary: The WO3@WS2 heterojunction composites with bio-morphology were synthesized using hemp sticks derived from porous carbon as bio-templates. The 3D hierarchical structure and the S-termination of WS2, as well as the S-W-O of the heterojunction interface, collectively enhanced the gas sensing performance of WO3@WS2/BC. The composite sensor exhibited remarkable selectivity to NO2 and a super-fast response/recovery time, showing potential for highly sensitive NO2 detection at room temperature.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Zhiping Liang et al.
Summary: Efficient detection of ultra-low concentrations of hazardous gases, such as NO2, can be achieved using nanoflower-like WO3/WS2 composites. These composites exhibit high sensitivity, selectivity, reproducibility, and long-term stability, making them suitable for air pollution monitoring and ecosystem and human health protection.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Analytical
Yongjiao Sun et al.
Summary: The fabrication and investigations of a novel NO2 gas sensor based on a 1T and 2H mixed phase WS2 quantum dots (QDs) modified MOF-derived hollow In2O3 (WS2 QDs@In2O3) heterostructure were documented. The proposed gas sensor based on WS2 QDs@In2O3 hollow hexagonal prisms was simple, sensitive, cost-effective and worked at room temperature (25 +/- 2 degrees C). The response value of 3 wt% WS2 QDs@In2O3 (W3In) towards 100 ppm NO2 could reach to 2034, which was an ultra-high value and almost 7.7 times higher than that of pure In2O3. Besides, our sensor showed excellent selectivity to NO2 and could detect concentration down to 100 ppb. The enhanced NO2 sensing performance was observed due to the synergistic effect between WS2 and In2O3. Furthermore, the compensation response values to NO2 based on the response to water vapor under different humidity of W3In were calculated and their fluctuations are within 7.8 % compared with the response under 25 % RH, which could provide a new strategy for accurately detecting NO2.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Martin S. Barbosa et al.
Summary: This study presents a new wet-chemical hydrothermal approach for the preparation of WS2/WO3 heterostructures as NO2 sensors. The heterostructures exhibited significant enhancement of the sensor response to NO2 compared to the respective tungsten oxide seed materials. An electronic sensitization mechanism based on the p-n semiconductor junctions was proposed to explain the enhancement of the sensor signal. Overall, this work introduces a low-cost, low-temperature, versatile wet-chemical synthetic route for the fabrication of transition metal dichalcogenide-metal oxide heterostructures with potential applications for the development of sensors capable of detecting NO2 at ppm levels.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Analytical
Sagar Sardana et al.
Summary: The present study investigates the use of WS2/MXene composite-based chemiresistive sensor to overcome the unsatisfactory sensing performance of Ti3C2Tx MXene-based sensors. The sensor exhibited high response rates to NH3 and NO2 and showed opposite transient response curves for NH3 and NO2. Density functional theory simulations showed the high adsorption energies of WS2/MXene surface towards NH3 and NO2. The sensor also demonstrated high resilience to humidity and the possibility of practical application of dual sensing using single sensing material was shown.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Ziyu Qin et al.
Summary: This study presents an enhanced room-temperature flexible paper-substrate sensor based on 2D tungsten disulfide (WS2) with S defects, which are synthesized by chemical exfoliation. The results show that WS2 with rich S defects exhibits nearly three times higher response intensity to NH3 gas than highly crystalline WS2. The flexible sensors demonstrate fast response, high stability, and multifunctional sensing detection for breathing detection and bending experiments.
APPLIED SURFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Xiaoxue Liu et al.
Summary: Gas sensors based on WS2/WO3 nanosheets with p-n heterojunctions were successfully fabricated through an in situ oxidation technique. The sensor exhibited excellent repeatability, selectivity, and long-term stability for acetone determination, with a higher sensitivity compared to pure WO3. This work provides a simple and flexible avenue to synthesize heterojunctions with high structural homogeneity for various applications.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Aanchal Alagh et al.
Summary: This study reports a novel method for the facile synthesis of 2D layered WS2 nanosheets assembled on 1D WS2 nanostructures, enabling ultrasensitive detection of NO2. The WS2 sensors fabricated demonstrate stable, reproducible, and remarkable responses towards NO2 at ppb concentration levels, with high sensitivity and ultra-low detection limits. The material also shows stable responses to NO2 over time, even when operated at room temperature, with humidity cross-sensitivity remaining manageable.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Xiqi Chen et al.
Summary: The study demonstrated a fully recoverable WS2-based gas sensor with enhanced anti-humidity ability by incorporating zero-dimensional PbS nanoparticles and UV light. The optimized WS2/PbS (molar ratio of 10:1) gas sensor showed significantly improved recovery rate from 33.4% to 99.8% with almost no baseline drift compared to the pure WS2 gas sensor, attributing to the irradiation of UV that accelerated the desorption of water molecules.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Yong Fan et al.
Summary: This study successfully produced a novel WO3/WS2 van der Waals heterostructured material with excellent sensing performance for 2-chloroethyl ethyl sulfide. The sensor exhibited high selectivity to the target gas, rapid response and recovery time, as well as good stability, making it a potential sensing material for dichlorodiethyl sulfide detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Physical
Dongzhi Zhang et al.
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Feng Hui Tian et al.
CHINESE CHEMICAL LETTERS
(2020)
Article
Chemistry, Analytical
Di Liu et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Analytical
Jae-Hun Kim et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Physical
Wenjun Yan et al.
APPLIED SURFACE SCIENCE
(2018)
Article
Chemistry, Physical
Ziyue Zhang et al.
APPLIED SURFACE SCIENCE
(2018)
Article
Engineering, Electrical & Electronic
Bhagaban Behera et al.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2018)
Article
Chemistry, Analytical
Dongzhi Zhang et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Multidisciplinary
Won-Tae Koo et al.
ADVANCED FUNCTIONAL MATERIALS
(2018)
Article
Chemistry, Physical
Jun-Hwe Cha et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2017)
Article
Chemistry, Multidisciplinary
Kyung Yong Ko et al.
Article
Chemistry, Multidisciplinary
Jian Gao et al.
Article
Chemistry, Multidisciplinary
Jian Zhen Ou et al.
Article
Nanoscience & Nanotechnology
Wenjing Yuan et al.
ACS APPLIED MATERIALS & INTERFACES
(2014)
Article
Chemistry, Inorganic & Nuclear
John Djamil et al.
DALTON TRANSACTIONS
(2013)
Article
Chemistry, Physical
Raul F. Garcia-Sanchez et al.
JOURNAL OF PHYSICAL CHEMISTRY A
(2013)
Article
Chemistry, Multidisciplinary
Michael Breedon et al.
CRYSTAL GROWTH & DESIGN
(2010)
