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Nickel Ammine Complex‐derived NiO Modified g‐C 3 N 4 Composites with Enhanced Visible‐light Photocatalytic H 2 Evolution Performance
Author(s) -
Shi Huilei,
Bi Jingce,
Bai Chunpeng,
Wu Junbiao,
Xu Yan,
Han Yide,
Zhang Xia
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201901813
Subject(s) - non blocking i/o , photocatalysis , materials science , triethanolamine , amorphous solid , nickel , composite number , catalysis , annealing (glass) , composite material , visible spectrum , chemical engineering , metallurgy , analytical chemistry (journal) , chemistry , organic chemistry , optoelectronics , engineering
In this paper, NiO/g‐C 3 N 4 (NiO/CN) composites were successfully prepared by the wetness impregnation method using nickel ammine complex solution as NiO source. As photocatalysts, NiO/CN composites showed enhanced visible‐light photocatalytic hydrogen evolution activities in the presence of triethanolamine as sacrificial agent. The effects of NiO content and annealing temperature for NiO/CN composites on the photocatalytic H 2 evolution activities were investigated. Furthermore, NiO/CN composite with 10.0% NiO content after annealing at 450 °C exhibited optimal photocatalytic H 2 evolution rate of 90.05 μmol⋅h −1 ⋅g −1 which is about 17 times higher than that of pristine CN (5.22 μmol⋅h −1 ⋅g −1 ). Moreover, the experimental results demonstrated that amorphous NiO as co‐catalyst not only offered active sites for H 2 evolution but also benefited the efficient separation of the photogenerated charge carries. In addition, NiO/CN composite displayed the superior photocatalytic stability during the photocatalytic process.