Interlayer interaction in ultrathin nanosheets of graphitic carbon nitride for efficient photocatalytic hydrogen evolution
學年 106
學期 1
出版（發表）日期 2017-08-01
作品名稱 Interlayer interaction in ultrathin nanosheets of graphitic carbon nitride for efficient photocatalytic hydrogen evolution
作品名稱（其他語言）
著者 D. Zhao; J. Chen; C. L. Dong; W. Zhou; Y. C. Huang; S. S. Mao; S. Shen
單位
出版者
著錄名稱、卷期、頁數 Journal of Catalysis 352, p.491-497
摘要 Two-dimensional graphitic carbon nitride (g-C3N4) nanosheets (CNNS) have attracted intense interest in photocatalysis, given their small thickness and high specific surface area favoring charge transfer and surface reactions. Herein, a facile strategy of breaking and following repolymerizing the heptazine units in bulk g-C3N4 (BCN) is developed to synthesize ultrathin CNNS with thickness of 1 nm in relatively high product yield (∼24%). The as-prepared 1 nm-thick CNNS show significantly enhanced photocatalytic performance for hydrogen evolution than BCN and even the 3 nm-thick CNNS acquired by thermal oxidation etching of BCN. It is evidenced that the disordered layer structure of the obtained ultrathin CNNS causes strong interlayer CN interaction, tunneling electron transport between the CN layers. Meanwhile, the broken in-plane CN bonds create more unsaturated N sites in the 1 nm-thick CNNS, facilitating the electron excitation from the occupied states in g-C3N4 to its unoccupied states for water reduction reaction.
關鍵字 Ultrathin nanosheets;Graphiticcarbon nitride;Electron transport;Solar;hydrogen conversion
語言 en
ISSN 0021-9517
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 TWN
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/987654321/113098 )