Two-dimensional g-C3N4/Ca2Nb2TaO10 nanosheet composites for efficient visible light photocatalytic hydrogen evolution

Thaweesak, Supphasin, Lyu, Miaoqiang, Peerakiatkhajohn, Piangjai, Butburee, Teera, Luo, Bin, Chen,Hongjun and Wang, Lianzhou (2017) Two-dimensional g-C3N4/Ca2Nb2TaO10 nanosheet composites for efficient visible light photocatalytic hydrogen evolution. Applied Catalysis B: Environmental, 202 184-190. doi:10.1016/j.apcatb.2016.09.022


Author Thaweesak, Supphasin
Lyu, Miaoqiang
Peerakiatkhajohn, Piangjai
Butburee, Teera
Luo, Bin
Chen,Hongjun
Wang, Lianzhou
Title Two-dimensional g-C3N4/Ca2Nb2TaO10 nanosheet composites for efficient visible light photocatalytic hydrogen evolution
Formatted title
Two-dimensional g-C3N4/Ca2Nb2TaO10 nanosheet composites for efficient visible light photocatalytic hydrogen evolution
Journal name Applied Catalysis B: Environmental   Check publisher's open access policy
ISSN 0926-3373
1873-3883
Publication date 2017-03-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.apcatb.2016.09.022
Open Access Status Not yet assessed
Volume 202
Start page 184
End page 190
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
Scalable g-C3N4 nanosheet powder catalyst was prepared by pyrolysis of dicyandiamide and ammonium chloride followed by ultra-sonication and freeze-drying. Nanosheet composite that combines the g-C3N4 nanosheets and Ca2Nb2TaO10 nanosheets with various ratios were developed and applied as photocatalysts for solar hydrogen generation. Systematic studies reveal that the g-C3N4/Ca2Nb2TaO10 nanosheet composite with a mass ratio of 80:20 shows the best performance in photocatalytic H2 evolution under visible light-irradiation, which is more than 2.8 times out-performing bare g-C3N4 bulk. The resulting nanosheets possess a high surface area of 96 m2/g, which provides abundance active sites for the photocatalytic activity. More importantly, the g-C3N4/Ca2Nb2TaO10 nanosheet composite shows efficient charge transfer kinetics at its interface, as evident by the photoluminescence measurement. The intimate interfacial connections and the synergistic effect between g-C3N4 nanosheets and Ca2Nb2TaO10 nanosheets with cascading electrons are efficient in suppressing charge recombination and improving photocatalytic H2 evolution performance.
Keyword Ca2Nb2TaO10 nanosheets
Composites
g-C3N4 nanosheets
H2 production
Photocatalysis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Published online 12 September 2016

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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