Journal
NANOSCALE
Volume 6, Issue 3, Pages 1782-1789Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr05509d
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Funding
- National Basic Research Program 973 [2011CB933600, 2010CB732600]
- National Natural Science Foundation of China [21325523, 21075129]
- Award for the Hundred Talent Program of the Chinese Academy of Science
- Guangdong Innovation Research Team Fund for Low-cost Healthcare Technologies
- Natural Science Foundation of Shenzhen City [JCYJ20130401170306879, JCYJ20130401170306829]
- Funds for both Guangdong Key Laboratory of Nano-medicine and Shenzhen Engineering Laboratory of Single-molecule Detection and Instrument Development [433]
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Ultrathin nanosheets possess novel electronic structures and physical properties as compared with their corresponding bulk samples. However, the controlled synthesis of ultrathin monolayer nanosheets still remains a great challenge due to the Lack of an intrinsic driving force for anisotropic growth of two-dimensional (2D) structures. Here we demonstrate, for the first time to our knowledge, the in situ synthesis of Large-scale ultrathin single-crystalline Co0.85Se nanosheets on graphene oxide (GO) sheets, with a thickness of 3 nm. Owing to the synergetic chemical coupling effects between GO and Co0.85Se, the Co0.85Se/graphene hybrid nanosheets exhibit the highest catalytic performance among the available cobalt chalcogenide-based catalysts for the oxygen reduction reaction (ORR). Moreover, Co0.85Se/graphene hybrid nanosheets can catalyze the decomposition of hydrazine hydrate rapidLy, with 97% of hydrazine hydrate being degraded in 12 min and the degradation rate remaining constant over 10 consecutive cycles, thus having great potential as Long-term catalysts in wastewater treatment.
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