Triple‐Phase Interfacial Freestanding Fluffy Pine Needle Structures for Efficient Self‐Powered Photoelectrocatalysis DOI Open Access

Hyun-Kyung Jung,

Seok-Heum Baek,

Chanhwi Lee

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract Approximately 2 billion people still lack access to clean drinking water. Extensive efforts are underway develop semiconductor photocatalysts for water disinfection and environmental remediation, but conventional liquid‐solid diphase interfacial face challenges like low diffusion coefficients limited solubility of dissolved oxygen. This study introduces freestanding copper oxide fluffy pine needle structures (CO‐FPNs) with tunable pollutants‐gas‐solid (WGS) triple‐phase interfaces that enhance oxygen enrichment reactive species (ROS) production. Three differently structured CO‐FPNs—microdendrites, hierarchical dendrites, nanowires—are designed. The CO‐FPN/WGS, predominantly in the Cassie‐Wenzel coexistence state, showed a 1.81‐ 1.91‐fold higher reaction rate than micro‐ nanostructured CO‐FPNs due increased O levels high adsorption capability. Under illumination, CO‐FPN/WGS achieved 99.999% sterilization by preventing pathogen adhesion enhancing ROS generation. Additionally, self‐powered photoelectrocatalytic system is constructed using nickel‐iron oxide‐deposited bismuth vanadate (NiFeO/BiVO 4 ) achieving 1.45 times alone, superior oxidation kinetics NiFeO/BiVO improved reduction via atmospheric from CO‐FPN/WGS. demonstrates first example platform efficient photoelectrocatalysis.

Language: Английский

Near-Infrared Long-Lived Luminescent Nanoparticle-Based Time-Gated Imaging for Background-Free Detection of Avian Influenza Virus DOI
Jiwoo Han, Suyeon Kim, Dongkyu Kang

et al.

ACS Sensors, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 15, 2025

Near-infrared (NIR)-to-NIR upconversion nanoparticles (UCNPs) are promising materials for biomedical imaging and sensing applications. However, UCNPs with long lifetimes continue to face the limitation that they usually accompanied by weak luminescence intensity, resulting in difficulties achieving high-resolution sensitive time-gated imaging. To overcome this limitation, we have developed NIR long-lifetime luminescent (NLL NPs) strong 800 nm emission adding a photosensitizing shell prolonged lifetime lowering activator concentration. NLL NP-based overcomes inherent limitations of steady-state providing higher signal-to-noise ratios more robust signal intensities. When integrated into lateral flow immunoassay (LFA) detection avian influenza viruses, demonstrates 32-fold lower limit compared conventional optimal emitting nanoparticles. Furthermore, high accuracy LFA is confirmed through clinical validations using 65 samples, sensitivity specificity 100% an area under curve 1.000. These results demonstrate potential as powerful tool highly accurate viruses complex samples.

Language: Английский

Citations

1
Recent advancements in novel electrochemical sensors for disease-associated molecule determination DOI Creative Commons
Seyda Nur Samancı,

Göksu Özçelikay-Akyıldız,

S. Irem Kaya

et al.

Journal of Pharmaceutical and Biomedical Analysis Open, Journal Year: 2025, Volume and Issue: unknown, P. 100051 - 100051

Published: Jan. 1, 2025

Language: Английский

Citations

0
Near-Infrared Long Lifetime Upconversion Nanoparticles for Ultrasensitive microRNA Detection via Time-Gated Luminescence Resonance Energy Transfer DOI Creative Commons
Joonseok Lee, Suyeon Kim, Yeonkyung Park

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 10, 2024

Abstract Although upconversion nanoparticle (UCNP)-based luminescence resonance energy transfer (LRET) biosensing offers advantages such as wash-free detection and precise biomolecule quantification, there is still room for enhancing its sensitivity by preventing continuous in co-doped UCNPs during LRET. In this study, we report a time-gated LRET approach using near-infrared (NIR) long-lived luminescent UCNP donors (L-TG-LRET), achieving an 8-fold increase lifetime without compromising emission intensity. The extended slower migration pathway of the L-TG-LRET significantly enhances rapid Tm3+ reactivation from ions (800 nm emission) to IRDye800 acceptors (650–850 absorption). developed system was applied microRNAs (miRNAs), providing 17.9-fold higher than conventional steady-state methods. Furthermore, method has been successfully employed determine miRNA expression levels cancer cells, patient plasma, exosomes, enabling differentiation patients with lung breast cancers healthy donors. Notably, demonstrated enhanced sensing performance compared polymerase chain reaction (PCR) low exosomal miRNAs. These results highlighted potential valuable tool sensitive biomolecular clinical diagnostics.

Language: Английский

Citations

0
Triple‐Phase Interfacial Freestanding Fluffy Pine Needle Structures for Efficient Self‐Powered Photoelectrocatalysis DOI Open Access

Hyun-Kyung Jung,

Seok-Heum Baek,

Chanhwi Lee

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract Approximately 2 billion people still lack access to clean drinking water. Extensive efforts are underway develop semiconductor photocatalysts for water disinfection and environmental remediation, but conventional liquid‐solid diphase interfacial face challenges like low diffusion coefficients limited solubility of dissolved oxygen. This study introduces freestanding copper oxide fluffy pine needle structures (CO‐FPNs) with tunable pollutants‐gas‐solid (WGS) triple‐phase interfaces that enhance oxygen enrichment reactive species (ROS) production. Three differently structured CO‐FPNs—microdendrites, hierarchical dendrites, nanowires—are designed. The CO‐FPN/WGS, predominantly in the Cassie‐Wenzel coexistence state, showed a 1.81‐ 1.91‐fold higher reaction rate than micro‐ nanostructured CO‐FPNs due increased O levels high adsorption capability. Under illumination, CO‐FPN/WGS achieved 99.999% sterilization by preventing pathogen adhesion enhancing ROS generation. Additionally, self‐powered photoelectrocatalytic system is constructed using nickel‐iron oxide‐deposited bismuth vanadate (NiFeO/BiVO 4 ) achieving 1.45 times alone, superior oxidation kinetics NiFeO/BiVO improved reduction via atmospheric from CO‐FPN/WGS. demonstrates first example platform efficient photoelectrocatalysis.

Language: Английский

Citations

0