南方科技大学知识苑(SUSTech KC): Deactivation of porphyrin metal-organic framework in advanced oxidation process: Photobleaching and underlying mechanism

题名	Deactivation of porphyrin metal-organic framework in advanced oxidation process: Photobleaching and underlying mechanism
作者	Shu，Yufei 1; Liu，Xun 1,2; Zhang，Meng 1 ; Liu，Bei1 ; Wang，Zhongying1
通讯作者	Liu，Bei
发表日期	2024-06-05
DOI	10.1016/j.apcatb.2024.123746
发表期刊	Applied Catalysis B: Environmental 影响因子和分区
ISSN	0926-3373
卷号	346
摘要	Porphyrin metal-organic frameworks (MOFs) are widely used in photocatalytic advanced oxidation processes (AOP). However, the stability and deactivation of MOFs, crucial for reusability, have been understudied compared to their catalytic activity. We investigated photobleaching in porphyrin MOFs PCN-224-M (M= H, Fe, Co, Cu, Zn) under visible light and HO. The MOFs exhibited crystallinity loss, ring-opening cleavage, and linker degradation. Photobleaching resulted from direct redox reactions between porphyrin sites and HO. Metal-oxo-porphyrin intermediates played a key role in the “group effect,” with different functional groups affecting the photobleaching rate: PCN-224-Fe ≈ PCN-224-Co > PCN-224-H > PCN-224-Cu ≈ PCN-224-Zn. This trend related to chelated metal ions' electronic structures and their propensity for metal-oxo intermediate formation, establishing a structure-stability relationship. Our study enhances understanding of deactivation mechanisms in porphyrin MOFs during AOP, aiding the design of resilient and efficient MOF catalysts for environmental applications.
关键词	Advanced oxidation processes Deactivation Metal-organic frameworks Photobleaching Porphyrin
相关链接	[Scopus记录]
收录类别	SCI
语种	英语
学校署名	第一 ; 通讯
ESI学科分类	CHEMISTRY
Scopus记录号	2-s2.0-85183492891
来源库	Scopus
引用统计	被引频次[WOS]：5
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/701289
专题	工学院_环境科学与工程学院
作者单位	1.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China 2.School of Environment,Harbin Institute of Technology,China
第一作者单位	环境科学与工程学院
通讯作者单位	环境科学与工程学院
第一作者的第一单位	环境科学与工程学院
推荐引用方式 GB/T 7714	Shu，Yufei,Liu，Xun,Zhang，Meng,et al. Deactivation of porphyrin metal-organic framework in advanced oxidation process: Photobleaching and underlying mechanism[J]. Applied Catalysis B: Environmental,2024,346.
APA	Shu，Yufei,Liu，Xun,Zhang，Meng,Liu，Bei,&Wang，Zhongying.(2024).Deactivation of porphyrin metal-organic framework in advanced oxidation process: Photobleaching and underlying mechanism.Applied Catalysis B: Environmental,346.
MLA	Shu，Yufei,et al."Deactivation of porphyrin metal-organic framework in advanced oxidation process: Photobleaching and underlying mechanism".Applied Catalysis B: Environmental 346(2024).