Atomic Confinement Empowered CoZn Dual-Single-Atom Nanotubes for H2O2 Production in Sequential Dual-Cathode Electro-Fenton Process

© 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 44 vom: 01. Nov., Seite e2406957
1. Verfasser: Yang, Lijun (VerfasserIn)
Weitere Verfasser: Cheng, Huimin, Li, Hui, Sun, Ga, Liu, Sitong, Ma, Tianyi, Zhang, Lei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article H2O2 production atomic confinement dual‐single‐atom nanotubes sequential dual‐cathode electro‐fenton
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520 |a Single-atom catalysts (SACs) are flourishing in various fields because of their 100% atomic utilization. However, their uncontrollable selectivity, poor stability and vulnerable inactivation remain critical challenges. According to theoretical predictions and experiments, a heteronuclear CoZn dual-single-atom confined in N/O-doped hollow carbon nanotube reactors (CoZnSACNTs) is synthesized via spatial confinement growth. CoZnSA@CNTs exhibit superior performance for H2O2 electrosynthesis over the entire pH range due to dual-confinement of atomic sites and O2 molecule. CoZnSA@CNTs is favorable for H2O2 production mainly because the synergy of adjacent atomic sites, defect-rich feature and nanotube reactor promoted O2 enrichment and enhanced H2O2 reactivity/selectivity. The H2O2 selectivity reaches ∼100% in a range of 0.2-0.65 V versus RHE and the yield achieves 7.50 M gcat -1 with CoZnSA@CNTs/carbon fiber felt, exceeding most of the reported SACs in H-type cells. The obtained H2O2 is converted directly to sodium percarbonate and sodium perborate in a safe way for H2O2 storage/transportation. The sequential dual-cathode electron-Fenton process promotes the formation of reactive oxygen species (•OH, 1O2 and •O2 -) by activating the generated H2O2, enabling accelerated degradation of various pollutants and Cr(VI) detoxification in actual wastewater. This work proposes a promising confinement strategy for catalyst design and selectivity regulation of complex reactions 
650 4 |a Journal Article 
650 4 |a H2O2 production 
650 4 |a atomic confinement 
650 4 |a dual‐single‐atom nanotubes 
650 4 |a sequential dual‐cathode electro‐fenton 
700 1 |a Cheng, Huimin  |e verfasserin  |4 aut 
700 1 |a Li, Hui  |e verfasserin  |4 aut 
700 1 |a Sun, Ga  |e verfasserin  |4 aut 
700 1 |a Liu, Sitong  |e verfasserin  |4 aut 
700 1 |a Ma, Tianyi  |e verfasserin  |4 aut 
700 1 |a Zhang, Lei  |e verfasserin  |4 aut 
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773 1 8 |g volume:36  |g year:2024  |g number:44  |g day:01  |g month:11  |g pages:e2406957 
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