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Synthesis of shaped Pt nanoparticles using common anions or small molecules as shape-directing agents: observation of a strong halide or pseudo-halide effect
| Content Provider | Semantic Scholar |
|---|---|
| Author | Michel, Jason A. Morris, William Lukehart, Charles M. |
| Copyright Year | 2015 |
| Abstract | Chemical reduction of Pt(II) and Pt(IV) salts by H2, hydrazine, or borohydride ion, in the presence of common anions or small molecules is surveyed to discover shape-directing agents suitable for selective formation of Pt metal nanocubes or nanotetrahedra. Surfactants tested include a variety of amino acids, HSCH2CO2H, Ph2PCH2CO2H, polycarboxylate species, such as glycolate or tartrate ion, and several common anions (including CF3SO3−, ClO4−, NO3−, CO32−, PO43−, SO42−, Cl−, Br−, or I−). Although carboxylate, chloride, bromide, carbonate, nitrate, perchlorate, phosphate, sulfate, or triflate ions show poor shape-directing influence, the presence of hydroxide and iodide ions gives an unexpected halide (or pseudo-halide) effect. Hydrogen reduction of [Pt(OH)6]2− ion at basic pH gives high yields of cubic Pt nanoparticles, while hydrogen reduction of [PtI6]2− ion at basic pH gives high yields of tetrahedral Pt nanoparticles. |
| Starting Page | 2012 |
| Ending Page | 2018 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C4TA05952B |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/ta/c4/c4ta05952b/c4ta05952b1.pdf |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/getauthorversionpdf/C4TA05952B |
| Alternate Webpage(s) | https://doi.org/10.1039/C4TA05952B |
| Volume Number | 3 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
