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Type: Journal article
Title: Cobalt@nitrogen-doped bamboo-structured carbon nanotube to boost photocatalytic hydrogen evolution on carbon nitride
Author: Liu, Q.
Zeng, C.
Xie, Z.
Ai, L.
Liu, Y.
Zhou, Q.
Jiang, J.
Sun, H.
Wang, S.
Citation: Applied Catalysis B: Environmental, 2019; 254:443-451
Publisher: Elsevier
Issue Date: 2019
ISSN: 0926-3373
Statement of
Qiuxia Liu, Chunmei Zeng, Zhihui Xie, Lunhong Ai, Yaoyao Liu, Qin Zhou, Jing Jiang, Hongqi Sun, Shaobin Wang
Abstract: Rational design of high-efficiency and low-cost photo catalyst/cocatalyst systems is an effective strategy to realize high-performance photocatalytic hydrogen production from water, but remains still a great challenge. Herein, we report a new coatalyst based on ultra long bamboo-structured nitrogen-doped carbon nanotube (CNCNT) encapsulated with cobalt nanoparticles to couple with g-C₃N₄ photo catalyst in realizing a greatly enhanced photocatalytic activity toward hydrogen evolution reaction (HER). Taking advantages in effective electro catalytic HER activity, diversified spatial location and rapid interfacial charge transfer, the resulting g-C₃N₄/CNCNT exhibits significantly improved photocatalytic activity with a hydrogen evolution rate of 1208 μmol g⁻¹  h⁻¹ in triethanolamine solution, achieving about 172-fold enhancement compared with pristine g-C₃N₄. More importantly, g-C₃N4₄/CNCNT can photo catalytically decompose pure water with hydrogen evolution amount of about 92.3 μmol g⁻¹ within 4 h.
Keywords: Photocatalysis; water splitting; cocatalyst; g-C₃N₄; charge carrier
Rights: © 2019 Elsevier B.V. All rights reserved.
DOI: 10.1016/j.apcatb.2019.04.098
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