The hexagonal WO3 polymorph, -WO3, has attracted attention due to its interatomic channels, allowing for a greater degree of intercalation compared to other WO3 polymorphs. Our research group has previously demonstrated -WO3 to be a highly sensitive gas sensing material for a flu biomarker, isoprene. In this work, the gas sensing performance of this polymorph has been further investigated in two distinct configurations of the material produced by different processing routes. The first sample was synthesized using Na2WO4·2H2O and showed (100) faceting. The second sample was synthesized using WCl6 and showed (001) faceting. The gas sensing response of the nanostructured films deposited using the (100) textured -WO3 sample 1 had a higher response to acetone at 350 °C. The (001) textured -WO3 sample 2 favored isoprene at 350 °C. The selectivity of the latter to isoprene is explained in terms of the dangling bonds present on the (001) facets. The tungsten and oxygen dangling bonds present on the (001) plane favor the adsorption of the isoprene molecule over that of the acetone molecule due to the oxygen containing dipole present in the acetone molecule.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7957717 | PMC |
| http://dx.doi.org/10.3390/s21051690 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Olfactory Dysfunction in Allergic Rhinitis.
Clin Rev Allergy Immunol
December 2024
Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Olfactory dysfunction (OD) can have serious consequences as it hinders individuals from detecting important warning signals like smoke, spoiled food, and gas leaks. This can significantly impact their nutritional status, eating satisfaction, and overall quality of life. Allergic rhinitis (AR) is a common disease that greatly affects the quality of life and can lead to a decrease, distortion, or complete loss of olfactory ability.
View Article and Find Full Text PDFElectrochemical Biosensing Technologies for Neurochemicals: Recent Advances in Electrochemical Sensors and Devices.
ACS Sens
January 2025
State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), Beijing 102249, China.
electrochemical sensing of neurotransmitters, neuromodulators, and metabolites plays a critical role in real-time monitoring of various physiological or psychological processes in the central nervous system. Currently, advanced electrochemical biosensors and technologies have been emerging as prominent ways to meet the surging requirements of monitoring of neurotransmitters and neuromodulators ranging from single cells to brain slices, even the entire brain. This review introduces the fundamental working principles and summarizes the achievements of electrochemical biosensing technologies including voltammetry, amperometry, potentiometry, field-effect transistor (FET), and organic electrochemical transistor (OECT).
View Article and Find Full Text PDFTitanium nitride sensor for selective NO detection.
Nat Commun
January 2025
School of Environmental Science and Technology, Dalian University of Technology, Dalian, China.
Efficient detection methods are needed to monitor nitrogen dioxide (NO), a major NO pollutant from fossil fuel combustion that poses significant threats to both ecology and human health. Current NO detection technologies face limitations in stability and selectivity. Here, we present a transition metal nitride sensor that exhibits exceptional selectivity for NO, demonstrating a sensitivity 30 times greater than that of the strongest interfering gas, NO.
View Article and Find Full Text PDFOptical and Electrical Dual-Mode Detection of a Carcinogenic Substance Based on Synergy of Liquid Crystals and Ionic Liquids.
ACS Sens
January 2025
School of Materials Science and Engineering, Tongji University, Shanghai 201804, P. R. China.
Visual, sensitive, and selective detection of carcinogenic substances is highly desired in portable health protection and practical medicine production. However, achieving this goal presents significant challenges with the traditional single-mode sensors reported so far, as they have limited sensing mechanisms and provide only a single output signal. Here, we report an effective optical and electrical dual-mode sensor for the visual, sensitive, and selective detection of -nitrosodiethylamine (NDEA), a typical volatile carcinogenic substance, leveraging the synergy of ionic liquid-doped liquid crystals (IL-LC).
View Article and Find Full Text PDFSelf-assembled peptide microtubes (SPMTs)/SnO sensors for enhanced room-temperature gas detection under visible light illumination.
Talanta
December 2024
Engineering Research Center of Smart Microsensors and Microsystems, Ministry of Education, College of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, 310018, China; China-Israel Polypeptide Device and Application Technology Joint Research Center, Hangzhou, 310027, China. Electronic address:
Nitrogen dioxide (NO) is an important contaminant that poses a severe threat to environmental sustainability. Traditional inorganic NO gas detectors are generally used under harsh operating conditions and employ environmentally unfriendly resources, thus preventing widespread practical applications. Herein, self-assembled peptide microtubes (SPMTs) are combined with SnO nanoparticles (NPs) to develop a bioinspired NO gas sensor.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!