Enhanced triplet-triplet annihilation upconversion by photonic crystals and Au plasma resonance for efficient photocatalysis

被引：10
作者：
Fang, Jiaojiao [1 ,2 ,3 ]
Chen, Yukai [1 ,2 ,3 ]
Zhu, Cheng [1 ,2 ,3 ]
Li, Xue [1 ,2 ,3 ]
Wang, Wei [2 ,3 ,4 ]
Lu, Chunhua [1 ,2 ,3 ]
Ni, Yaru [1 ,2 ,3 ]
Fang, Liang [1 ,2 ,3 ]
Xu, Zhongzi [1 ,2 ,3 ]
机构：
[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 210009, Peoples R China
[2] Nanjing Tech Univ, State Key Lab Mat Orient Chem Engn, Nanjing 210009, Peoples R China
[3] Nanjing Tech Univ, Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct, Nanjing 210009, Peoples R China
[4] Nanjing Univ Informat Sci & Technol, Sch Chem & Mat Sci, Nanjing 210044, Peoples R China
来源：
CATALYSIS SCIENCE & TECHNOLOGY | 2020年 / 10卷 / 24期
基金：
中国国家自然科学基金;
关键词：
LUMINESCENCE; OXIDATION; EMISSION; FILMS; YB3+;
D O I：
10.1039/d0cy01810d
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：
Strong upconversion luminescence is significant for effective photocatalytic technology. In this work, photonic crystals and Au nanoparticles (AuNPs) were introduced together to enhance triplet-triplet annihilation upconversion (TTA-UC) luminescence intensity. Photonic crystal films have been fabricated by demolding a polydimethylsiloxane film containing platinum(ii)-octaethylporphyrin & 9,10-diphenylanthracene and AuNPs from V-shape anodic aluminum oxide templates. The blue light intensity of the photonic crystal film with AuNPs has gained a 3.69-fold enhancement under green light excitation. After coupling the photonic crystal structure with AuNP plasma resonance, the green-to-blue TTA-UC intensity of the composite film has been enhanced 7.68 times compared with the planar upconversion film without AuNPs. The pseudo-first-order rate constant of the composite film system with g-C3N4@CdS has been increased 3.88 times compared with that of the planar upconversion film system without AuNPs under visible light. This work presents a new route to enhance the TTA-UC luminescence via a hybrid effect, which is useful for photocatalysis.
引用
收藏
页码：8325 / 8331
页数：7
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