Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 42, Issue 7, Pages 4007-4016Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.10.157
Keywords
Cu(2)0 nanosphere; Graphene oxide; Photocatalyst; Hydrogen; Water splitting
Categories
Funding
- CAS Renewable Energy Key Lab
- National Science Foundation of China [51576201]
- Natural Science Foundation of Guangdong Province [2015A030312007]
- Guangdong Science and Technology Project [2013B050800007]
- Guangzhou Science and Technology Project [2013J4500027]
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A new one-step method for synthesize cuprous oxide nanosphere without any additive surfactant in room temperature and atmospheric pressure was carried. The nanospheres with the diameters less than 100 nm were well-dispersed and formed the core shell structure with the GO. The partial reduction of GO increases the atomic percentage of sp(2) carbon (graphene sheets). It was found that sp(2) carbon with better conductivity plays an important role in mitigating electron hole recombination and enhancing electron transfer between Cu2O and GO and thus enhance the photocatalytic activity. The highest hydrogen yields for GO-modified samples (118.3 p.mol) were more than twice as large as that of bare Cu2O nanosphere (44.6 umol). 2016 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.
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