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

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

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