Nano Letters, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 4, 2024
Atomically precise Pd-thiolate clusters are well-known for their well-defined structures and diverse applications involving catalysis, sensors, biomedicine. While many of these have been studied, molecular typically feature a tiara-like arrangement. In this study, we present the first example non-tiara-like cluster: octahedral Pd
Language: Английский
Rare Metals, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 25, 2025
Language: Английский
Citations
0
Small, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 24, 2025
Nitric oxide is an endogenous biological signaling molecule, and the corresponding fractional exhaled NO serves as important indicator in clinical diagnostics therapeutic applications. However, achieving accurate rapid monitoring of ppb-level nitric (FeNO) at room temperature remains a significant challenge. Herein, ultrathin porphyrin metal-organic framework (MOF) sheets are selected to assemble with supramolecularly functionalized graphene through hydrogen bonding electrostatic interaction 6 nm thickness. The resulting MOF/graphene sheet-on-sheet nanohybrid designed chemiresistive sensor which exhibits superior gas sensing performance including ultralow practical limit detection (Ra/Rg = 1.047, 5 ppb NO), reliable repeatability, excellent selectivity against other gases, relative long-term stability. Mechanism study indicates that prominent attributed ordered active sites ferric-pyrrole (Fe─N4) less than 10 thick heterojunction structure nanohybrid. potential utility obtained sensors validated by exhalation tests toward samples from healthy individuals asthma patients, respectively. This work provides effective strategy developing MOF-based for FeNO monitoring.
Language: Английский
Citations
0
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 26, 2025
Abstract Metal oxide semiconductor (MOS) supported Pd materials are potential candidates for H 2 sensors, while effective detection at near room temperature remains a great challenge owing to the difficulty of hydrogen migration from low temperature. Herein, guided by theoretical calculations, rare earth single atoms doping nanoparticles on WO 3 nanorods with tunable work function differences (ΔФ) and oxygen vacancies precisely developed improve sensing performances. The resultant Ce‐Pd/WO presents highest response 31.3 toward 50 ppm , showing 6 times improvement over Pd/WO which realizes trace fast . Density functional theory results reveal that energy barrier formation vacancy decrease after introducing atoms, lowest ΔФ exhibits most facile spillover desorption. in situ spectra characterization experiments further demonstrate highly improved Significantly, real‐time monitoring application device leak (0.1 V/V%) Al‐air batteries is also verified. This can shed light development high‐efficiency sensor via precise modulation functions.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: May 6, 2025
Abstract Despite the metal coordination and single‐atom catalyst (SAC) have been extensively investigated in surface science over past decade, their overall activity involving multi‐step reactions remains unsatisfactory owing to bond single atom being irreconcilable. Here, a stable atomically dispersed Pd sub‐metallene (Pd ADSM) layer supported on 2D MXene (Mo 2 TiC ) is reported, which combines advantages of structures, atoms, bonds. ADSM shows covalent structures along z‐coordination highly coordinated bonds direction. During alkaline hydrogen evolution reaction (HER), 7‐ 112‐times higher mass than SAC SAC) commercial Pt/C at overpotential −108 mV, respectively. Operando characterizations theoretical calculations reveal that Pd─Pd interface not only makes adsorbed water form flexible hydrogen‐bonded skeleton closer catalytic center but also reduces energy barrier for HER rate‐determining step. Moreover, moderate adsorption can rapidly activate, dissociate, desorb molecules room temperature, resulting record‐high sensing performances (Response time, Recovery Sensitivity 100 ppm H are 4.8, 1.6 s, 43.5%, respectively).
Language: Английский
Citations
0
Chemical Communications, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
We provide a comprehensive overview of the latest research progress and development strategies for high-performance chemiresistive H 2 sensors, highlighting enhancement that have been employed to improve sensor performance.
Language: Английский
Citations
3
Nano Letters, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 4, 2024
Atomically precise Pd-thiolate clusters are well-known for their well-defined structures and diverse applications involving catalysis, sensors, biomedicine. While many of these have been studied, molecular typically feature a tiara-like arrangement. In this study, we present the first example non-tiara-like cluster: octahedral Pd
Language: Английский
Citations
2