Heterojunction composites of covalent organic frameworks grown on the surface of persistent luminescent nanoparticles for photocatalytic hydrogen evolution and degradation of organic pollutants

被引：1

作者：

Li, Boyuan ^{[1
,2
]}

Abulimiti, Abuduaini ^{[1
]}

Tuerdi, Ailijiang ^{[1
]}

Yan, Peng ^{[1
]}

He, Fenggui ^{[1
,2
]}

Zhou, Jie ^{[1
]}

Long, Gang ^{[1
]}

Zhang, Minghui ^{[2
]}

Abdukayum, Abdukader ^{[1
]}

机构：

[1] Kashi Univ, Coll Chem & Environm Sci, Xinjiang Key Lab Novel Funct Mat Chem, Kashi 844000, Peoples R China

[2] Nankai Univ, Coll Chem, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2024年 / 700卷

基金：

中国国家自然科学基金;

关键词：

Persistent luminescent nanoparticles; Covalent organic frameworks; Core-shell structure; Heterostructure photocatalyst; Round-the-clock photocatalysis; CRYSTALLINE; ZN2GEO4MN2+; REDUCTION; CATALYSTS; ENERGY;

D O I：

10.1016/j.colsurfa.2024.134792

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Covalent organic frameworks (COFs) have shown great promise for photocatalytic hydrogen evolution from water and photocatalytic degradation of organic pollutants. However, a single COFs suffers from poor photogenerated charge separation efficiency. In this study, we synthesized persistent luminescent nanoparticles (PLNPs)@COFs composites with core -shell heterostructures by the in situ growth of COFs on the surface of PLNPs. The PLNPs@COFs composites demonstrated better photocatalytic performance than pure PLNPs and COFs. The hydrogen production rate of PLNPs@COFs (1:6) was about 35 mmol h-1 g-1 , and the photodegradation efficiency of Rhodamine B by PLNPs@COFs (3:1) reached 100 % in 50 min. Evidently, the combination of COFs with PLNPs to form a core -shell heterostructure with a tight contact interface can effectively improve the photogenerated charge separation efficiency. Our covalent bonding and in situ growth approach is more conducive to the formation of stable core-shell heterostructures. A good match between the persistent luminescence emission spectrum of the PLNPs and the absorption range of the COFs improves the potential of PLNPs@COFs to function as a round-the-clock photocatalyst. This strategy holds excellent promise in the efficient use of solar photocatalytic hydrogen evolution and in environmental purification in the future.

引用

页数：11

共 52 条

[31] Construction of carbon and nitride double vacancy defects on ultrathin porous g-C3N4 nanosheets assisted by freeze-drying for enhanced photocatalysis [J].