Nanogap engineered plasmon-enhancement in photocatalytic solar hydrogen conversion
學年 104
學期 1
出版（發表）日期 2015-09-22
作品名稱 Nanogap engineered plasmon-enhancement in photocatalytic solar hydrogen conversion
作品名稱（其他語言）
著者 Jie Chen; Chung-Li Dong; Yuan-Chang Du; Da-Ming Zhao; Shao-Hua Shen
單位
出版者
著錄名稱、卷期、頁數 Advanced Materials Interfaces 2(14), pp. 1500280
摘要 Graphitic carbon nitride modified with plasmonic Ag@SiO2 core–shell nanoparticles (g-C3N4/Ag@SiO2) are proposed for enhanced photocatalytic solar hydrogen evolution under visible light. Nanosized gaps between the plasmonic Ag nanoparticles (NPs) and g-C3N4 are created and precisely modulated to be 8, 12, 17, and 21 nm by coating SiO2 shells on the Ag NPs. The optimized photocatalytic hydrogen production activity for g-C3N4/Ag@SiO2 is achieved with a nanogap of 12 nm (11.4 μmol h−1) to be more than twice as high as that of pure g-C3N4 (5.6 μmol h−1). The plasmon resonance energy transfer (PRET) effect of Ag NPs is innovatively proved from a physical view on polymer semiconductors for photoredox catalysis. The PRET effect favors the charge carrier separation by inducing electron–hole pairs efficiently formed in the near-surface region of g-C3N4. Furthermore, via engineering the width of the nanogap, the PRET and energy-loss Förster resonance energy transfer processes are perfectly balanced, resulting in considerable enhancement of photocatalytic hydrogen production activity over the g-C3N4/Ag@SiO2 plasmonic photocatalyst.
關鍵字 core–shell nanoparticles;photocatalysis;silver; urface modification;surface plasmon resonance
語言 en
ISSN 2196-7350
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Shao-Hua Shen
審稿制度 是
國別 DEU
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/104587 )