Title

Cobalt@nitrogen-doped bamboo-structured carbon nanotube to boost photocatalytic hydrogen evolution on carbon nitride

Document Type

Journal Article

Publisher

Elsevier B.V.

School

School of Engineering

Grant Number

ARC Number : DP170104264

Comments

Originally published as: Liu, Q., Zeng, C., Xie, Z., Ai, L., Liu, Y., Zhou, Q., ... Wang, S. (2019). Cobalt@ nitrogen-doped bamboo-structured carbon nanotube to boost photocatalytic hydrogen evolution on carbon nitride. Applied Catalysis B: Environmental, 254, 443-451. Original publication available here

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-C3N4/CNCNT can photo catalytically decompose pure water with hydrogen evolution amount of about 92.3 μmol g−1 within 4 h.

DOI

10.1016/j.apcatb.2019.04.098

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