Abstract
Platinum chloride−graphite intercalated compounds (PtCl4−GICs) with a stage three structure were produced by mixing platinum tetrachloride and graphite at 723 K under 0.3 MPa of chlorine atmosphere. Two-dimensional platinum nanosheets with a thickness of 2−3 nm and a width of 5−300 nm were formed between graphite layers by hydrogen reduction of PtCl4−GICs at 573 K. The sheets had a number of hexagonal holes and edge angles of 120°, owing to the limited aggregation of the intercalated platinum chloride molecules to platinum sheets along regular hexagonal nets of carbon atoms between graphite layers.
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