%0 Journal Article %1 RN89 %A Diaz, C. %A Valenzuela, M.L. %A Lavayen, V. %A O'dwyer, C. %D 2012 %J Inorganic Chemistry %K characterization, dqcauchile nanocomposites, nanoparticles, nanotubes, nanowires precursor, pyrolysis, spectroscopic %N 11 %P 6228-6236 %R 10.1021/ic300767h %T Layered Graphitic Carbon Host Formation During Liquid-Free Solid State Growth of Metal Pyrophosphates %U /brokenurl#<Go to ISI>://WOS:000304728500029 %V 51 %X We report a successful ligand- and liquid-free solid state route to form metal pyrophosphates within a layered graphitic carbon matrix through a single step approach involving pyrolysis of previously synthesized organometallic derivatives of a cyclotriphosphazene. In this case, we show how single crystal Mn2P2O7 can be formed on either the micro- or the nanoscale in the complete absence of solvents or solutions by an efficient combustion process using rationally designed macromolecular trimer precursors, and present evidence and a mechanism for layered graphite host formation. Using in situ Raman spectroscopy, infrared spectroscopy, X-ray diffraction, high resolution electron microscopy, thermogravimetric and differential scanning calorimetric analysis, and near-edge X-ray absorption fine structure examination, we monitor the formation process of a layered, graphitic carbon in the matrix. The identification of thermally and electrically conductive graphitic carbon host formation is important for the further development of this general ligand-free synthetic approach for inorganic nanocrystal growth in the solid state, and can be extended to form a range of transition metals pyrophosphates. For important energy storage applications, the method gives the ability to form oxide and (pyro)phosphates within a conductive, intercalation possible, graphitic carbon as host-guest composites directly on substrates for high rate Li-ion battery and emerging alternative positive electrode materials.

@article{RN89, abstract = {We report a successful ligand- and liquid-free solid state route to form metal pyrophosphates within a layered graphitic carbon matrix through a single step approach involving pyrolysis of previously synthesized organometallic derivatives of a cyclotriphosphazene. In this case, we show how single crystal Mn2P2O7 can be formed on either the micro- or the nanoscale in the complete absence of solvents or solutions by an efficient combustion process using rationally designed macromolecular trimer precursors, and present evidence and a mechanism for layered graphite host formation. Using in situ Raman spectroscopy, infrared spectroscopy, X-ray diffraction, high resolution electron microscopy, thermogravimetric and differential scanning calorimetric analysis, and near-edge X-ray absorption fine structure examination, we monitor the formation process of a layered, graphitic carbon in the matrix. The identification of thermally and electrically conductive graphitic carbon host formation is important for the further development of this general ligand-free synthetic approach for inorganic nanocrystal growth in the solid state, and can be extended to form a range of transition metals pyrophosphates. For important energy storage applications, the method gives the ability to form oxide and (pyro)phosphates within a conductive, intercalation possible, graphitic carbon as host-guest composites directly on substrates for high rate Li-ion battery and emerging alternative positive electrode materials.}, added-at = {2019-12-04T03:57:35.000+0100}, author = {Diaz, C. and Valenzuela, M.L. and Lavayen, V. and O'dwyer, C.}, biburl = {https://www.bibsonomy.org/bibtex/2cdf8658b065f95ae56fc8c2f3c6b313e/dqcauchile}, doi = {10.1021/ic300767h}, interhash = {6a47c1aa4505ccd02a9aff70cf7d3b61}, intrahash = {cdf8658b065f95ae56fc8c2f3c6b313e}, issn = {0020-1669}, journal = {Inorganic Chemistry}, keywords = {characterization, dqcauchile nanocomposites, nanoparticles, nanotubes, nanowires precursor, pyrolysis, spectroscopic}, number = 11, pages = {6228-6236}, timestamp = {2019-12-04T03:58:17.000+0100}, title = {Layered Graphitic Carbon Host Formation During Liquid-Free Solid State Growth of Metal Pyrophosphates}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000304728500029}, volume = 51, year = 2012 }