New and efficient sensors of nerve agents are urgently demanded to prevent them from causing mass casualties in war or terrorist attacks. So, in this work, a novel hierarchical nanoheterostructure was synthesized via the direct growth of α-FeO nanorods onto multiwall carbon nanotube (MWCNT) backbones. Then, the composites were functionalized with hexafluoroisopropanol (HFIP) and successfully applied to detect dimethyl methylphosphonate (DMMP)-sarin simulant gas. The observations show that the HFIP-α-FeO@MWCNT hybrids exhibit outstanding DMMP-sensing performance, including low operating temperature (220 °C), high response (6.0 to 0.1 ppm DMMP), short response/recovery time (8.7 s/11.9 s), as well as low detection limit (63.92 ppb). The analysis of the sensing mechanism demonstrates that the perfect sensing performance is mainly due to the synergistic effect of the chemical interaction of DMMP with the heterostructure and the physical adsorption of DMMP by hydrogen bonds with HFIP that are grafted on the α-FeO@MWCNTs composite. The huge specific surface area of HFIP-α-FeO@MWCNTs composite is also one of the reasons for this enhanced performance. This work not only offers a promising and effective method for synthesizing sensitive materials for high-performance gas sensors but also provides insight into the sensing mechanism of DMMP.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10857011 | PMC |
| http://dx.doi.org/10.3390/nano14030305 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
MOF-Derived Hollow C, N-Doped CoO Dodecahedral Nanostructure Enwrapped with MgInS Nanosheets for Enhanced Photocatalytic N Reduction.
Inorg Chem
January 2025
Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India.
Design of hierarchical hollow nanoheterostructure materials through interfacial and defect engineering is an innovative approach for achieving optimal charge separation dynamics and photon harvesting efficiency. Herein, we have described a facile technique to fabricate hollow MOF-derived C, N-doped-CoO (C, N-CoO) dodecahedral particles enwrapped with MgInS nanosheets for enhanced N reduction performance. ZIF-67 was initially used as a sacrificial template to prepare hollow C, N-CoO using a carbonization route followed by low-temperature calcination treatment.
View Article and Find Full Text PDFBrush-like Co/CoSe nanoheterostructures embedded in N-doped carbon for rechargeable Zn-air batteries.
Dalton Trans
March 2024
Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, Anhui, China.
Rational design and preparation of high-performance bifunctional oxygen electrocatalysts with effective sites and excellent mass/electron transfer structures are in demand for Zn-air batteries to overcome the sluggish oxygen reduction/evolution kinetics. Herein, a scalable and facile strategy is proposed to obtain brush-like Co/CoSe nanoheterostructures embedded in N-doped carbon catalysts with optimized active sites and hierarchical nanostructures. Systematic investigation indicates that nanoheterogeneous interfaces with appropriate composition deliver significantly improved electrochemical activity.
View Article and Find Full Text PDFHierarchical Nanoheterostructure of HFIP-Grafted α-FeO@Multiwall Carbon Nanotubes as High-Performance Chemiresistive Sensors for Nerve Agents.
Nanomaterials (Basel)
February 2024
Key Laboratory of Superlight Material and Surface Technology, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
New and efficient sensors of nerve agents are urgently demanded to prevent them from causing mass casualties in war or terrorist attacks. So, in this work, a novel hierarchical nanoheterostructure was synthesized via the direct growth of α-FeO nanorods onto multiwall carbon nanotube (MWCNT) backbones. Then, the composites were functionalized with hexafluoroisopropanol (HFIP) and successfully applied to detect dimethyl methylphosphonate (DMMP)-sarin simulant gas.
View Article and Find Full Text PDFTiO nanorods decorated Si nanowire hierarchical structures for UV light activated photocatalytic application.
Chemosphere
March 2024
School of Materials Science and Nanotechnology, Jadavpur University, Kolkata, 700032, India; Thin film and Nano Science Laboratory, Department of Physics, Jadavpur University, Kolkata, 700032, India. Electronic address:
Water remediation techniques like photolysis have recently piqued the interest of many researchers due to water contamination resulting from heavy industrialization and urbanization. In the current work, as-synthesized TiO nanorod decorated vertically aligned silicon nanowire (SiNW) leads to a hierarchical morphological structure formation. The photocatalytic nature of the fabricated SiNW/TiO nanoheterojunction is examined by the dye degradation of textile pollutants like methylene blue (MB), rhodamine B (RhB), and eosin B (EB).
View Article and Find Full Text PDFRu-Cu Nanoheterostructures for Efficient Hydrogen Evolution Reaction in Alkaline Water Electrolyzers.
J Am Chem Soc
October 2023
Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
Combining multiple species working in tandem for different hydrogen evolution reaction (HER) steps is an effective strategy to design HER electrocatalysts. Here, we engineered a hierarchical electrode for the HER composed of amorphous-TiO/Cu nanorods (NRs) decorated with cost-effective Ru-Cu nanoheterostructures (Ru mass loading = 52 μg/cm). Such an electrode exhibits a stable, over 250 h, low overpotential of 74 mV at -200 mA/cm for the HER in 1 M NaOH.
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!