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Controlled Synthesis of Higher Interfacial Electron Transfer Graphite‐Like Carbon Nitride/Perylenetetracarboxylic Diimide Heterogeneous for Enhanced Photocatalytic Activity
Author(s) -
Miao Hong,
Yang Jun,
Sheng Yuqiang,
Li Wenlu,
Zhu Yongfa
Publication year - 2021
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.202000453
Subject(s) - diimide , nanosheet , photocatalysis , graphitic carbon nitride , carbon nitride , photochemistry , electron transfer , materials science , redox , chemistry , perylene , nanotechnology , inorganic chemistry , organic chemistry , catalysis , molecule
To exploit the noble‐metal‐free, highly efficient and broad‐spectrum responsive photocatalyst of perylenetetracarboxylic diimide (PDI), a self‐assembled PDI nanowire is loaded on the surface of a graphite‐like carbon nitride (g‐C 3 N 4 ) nanosheet and forms an all‐organic supramolecular 1D/2D heterogeneous g‐C 3 N 4 /PDI with broad‐spectrum responsiveness (254–700 nm), which can improve the absorption efficiency of solar energy. In the g‐C 3 N 4 /PDI system, the π–π conjugated bond in the g‐C 3 N 4 /PDI can accelerate the photoinduced charge carrier transfer. On the other hand, the interlaced band structure between the g‐C 3 N 4 and PDI and the Z‐scheme pathway of the carriers leads to the spatial separation of redox reaction sites. Therefore, the g‐C 3 N 4 /PDI photocatalyst reaches strong redox ability in the photocatalytic process. In detail, the photocatalytic phenol degradation of g‐C 3 N 4 /PDI (0.837 h −1 ) is enhanced 2.67 and 9.19 times higher as the pure PDI and g‐C 3 N 4 , respectively, under the full spectra. Meanwhile, the H 2 evolution activity of the g‐C 3 N 4 /PDI (1649.93 μmol g −1 h −1 ) is 2.03 times higher than g‐C 3 N 4 nanosheet (814.03 μmol g −1 h −1 ).