Unveiling Ru(bpy) 3 2+ -Encapsulated Zeolite Y as Photocatalyst: Harnessing Photocatalytic Singlet Oxygen Generation for Mustard Gas Simulant Detoxification.

Autor: Kim S; BB21 Plus Program, Department of Chemistry, Pukyong National University, Busan, 48513, Republic of Korea., Kim Y; BB21 Plus Program, Department of Chemistry, Pukyong National University, Busan, 48513, Republic of Korea., Kim HS; BB21 Plus Program, Department of Chemistry, Pukyong National University, Busan, 48513, Republic of Korea.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Nov; Vol. 20 (47), pp. e2405559. Date of Electronic Publication: 2024 Aug 23.
DOI: 10.1002/smll.202405559
Abstrakt: This study explores the encapsulation of Ru(bpy) 3 2+ within Zeolite Y (ZY) to improve photocatalytic singlet oxygen generation for the degradation of a mustard gas simulant, namely 2-chloroethyl ethyl sulfide (CEES). Mustard gas simulants are known to disrupt several biological processes; thus, their effective degradation is essential. Zeolite Y, with its hierarchical structure and adjustable Si/Al ratios, is an ideal host for Ru(bpy) 3 2+ , significantly improving its photocatalytic efficiency and stability. It is demonstrated through XRD and spectroscopic analyses that encapsulated Ru(bpy) 3 2+ maintains its structural and photophysical properties, which are essential for generating singlet oxygen. Ru(bpy) 3 (1.0) loaded ZY(15) (where 1.0 and 15 represent the encapsulated amount of Ru(bpy) 3 2+ and Si/Al ratio, respectively) outperforms other investigated photocatalytic systems in the oxidation of CEES, demonstrating high conversion rates and selectivity toward nontoxic sulfoxide products. Immobilization of Ru(bpy) 3 2+ -encapsulated zeolite Y onto cotton fabric results in effective degradation of CEES. The experimental results, validated by theoretical calculations, indicate an improved oxygen affinity and accessibility in zeolites with higher Si/Al ratios. This study advances the design of photocatalytic materials for environmental and defense applications, providing sustainable solutions for hazardous chemical degradation.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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