Carbon-Coated Cu nanoparticles as a Cocatalyst of g-C3N4 for Enhanced Photocatalytic H2 Evolution Activity under Visible-Light Irradiation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

1 Scopus Citations
View graph of relations

Author(s)

  • Sibo Chen
  • Siyuan Yang
  • Xiaolin Sun
  • Kelin He
  • Xin Cai
  • Wuyi Zhou
  • Yueping Fang
  • Shengsen Zhang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number1800846
Number of pages7
Journal / PublicationEnergy Technology
Volume7
Issue number8
Early online date7 Nov 2018
Publication statusPublished - Aug 2019

Abstract

The photocatalytic H2 evolution is an important technology to solve the energy crisis. The hydrogen evolution rate of the graphite carbon nitride (g-C3N4) system in triethanolamine solution as sacrificial agent is clearly higher than that in methanol solution. But up to now, most of the Cu nanoparticles as cocatalyst of g-C3N4 photocatalytic systems for hydrogen evolution are performed in methanol solution because Cu nanoparticles are unstable in triethanolamine solution. Here, carbon-coated Cu nanoparticles as a cocatalyst of g-C3N4 composites (Cu@C/g-C3N4) are prepared by a simple two-step technology that includes annealing followed by grinding. The compositions, morphology, and optical and photoelectro chemical properties of the composites are characterized by means of physicochemical techniques. The prepared composition is used to generate hydrogen under visible-light irradiation in triethanolamine solution. The results show that the hydrogen evolution rate of the optimal Cu@C/g-C3N4 is up to 265.1 μmol g−1h−1, which is close to the activity of 0.5% Pt/g-C3N4, and after four repeated reactions, the photocatalytic activity decreases only by ≈15%. The good photocatalytic activity and stability result from Cu nanoparticles increase the transfer efficiency of charge carriers by trapping the photogenerated electrons produced by g-C3N4 and the protective effect of carbon layer on Cu nanoparticles.

Research Area(s)

  • carbon coating layer, Cu nanoparticles, graphite carbon nitride, photocatalytic H 2 evolution, visible light

Citation Format(s)

Carbon-Coated Cu nanoparticles as a Cocatalyst of g-C3N4 for Enhanced Photocatalytic H2 Evolution Activity under Visible-Light Irradiation. / Chen, Sibo; Yang, Siyuan; Sun, Xiaolin; He, Kelin; Ng, Yun Hau; Cai, Xin; Zhou, Wuyi; Fang, Yueping; Zhang, Shengsen.

In: Energy Technology, Vol. 7, No. 8, 1800846, 08.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review