Electrochemically activated solid synthesis: an alternative solid-state synthetic method

dc.contributor.authorLiu, JNen_AU
dc.contributor.authorAndersen, HLen_AU
dc.contributor.authorAl Bahri, OKen_AU
dc.contributor.authorBhattacharyya, Sen_AU
dc.contributor.authorRawal, Aen_AU
dc.contributor.authorBrand, HEAen_AU
dc.contributor.authorSharma, Nen_AU
dc.description.abstractSolid-state synthesis is one of the most common synthetic methods in chemistry and is extensively used in lab-scale syntheses of advanced functional materials to ton-scale production of chemical compounds. It generally requires at least one or several high temperature and/or high-pressure steps, which makes production of compounds via solid-state methods very energy and time intensive. Consequently, there is a persistent economic and environmental incentive to identify less energy and time consuming synthetic pathways. Here, we present an alternative solid-state synthetic method, which utilizes structural changes, induced by an electrochemical "activation" step followed by a thermal treatment step. The method has been used to synthesize a Sc0.67WO4-type phase where Sc0.67WO4 has previously only been obtained at 1400 °C and 4 GPa for 1 h. Through our method the Sc0.67WO4-type phase has been prepared at only 600 °C and ambient pressure. Experimental factors that influence phase formation from the electrochemical perspective are detailed. Overall, the method presented in this work appears to be able to generate the conditions for unusual and new phases to form and thus becomes another tool for synthetic solid-state chemists. This in turn permits the exploration of a larger synthetic parameter space. © 2018 The Royal Society of Chemistry.en_AU
dc.description.sponsorshipJunnan Liu would like to thank the support of the China Scholarship Council and UNSW for PhD funding. Henrik L. Andersen is grateful for the financial support received from Innovation Fund Denmark, Green Chemistry for Advanced Materials (GCAM-4107-00008B), Oticon Fonden and Knud Hojgaards Fond. This work was financially supported by the Australian Research Council DECRA (DE160100237) and DP (DP170100269) programs. Part of this research was undertaken on the Powder Diffraction beamline at the Australian Synchrotron, part of the Australian Nuclear Science and Technology Organisation (ANSTO). We would also like to thank Bernd Schulz, Damian Goonetilleke and Jimmy Wu for technical support during this work.en_AU
dc.identifier.citationLiu, J., Andersen, H. L., Al Bahri, O. K., Bhattacharyya, S., Rawal, A., Brand, H. E. A. & Sharma, N. (2018). Electrochemically activated solid synthesis: an alternative solid-state synthetic method. Dalton Transactions, 47(41), 14604-14611. doi:10.1039/C8DT02946Fen_AU
dc.identifier.journaltitleDalton Transactionsen_AU
dc.publisherRoyal Society of Chemistryen_AU
dc.subjectTemperature range 0400-1000 Ken_AU
dc.subjectTungsten compoundsen_AU
dc.subjectPressure range mega pa 10-100en_AU
dc.subjectHeat treatmentsen_AU
dc.titleElectrochemically activated solid synthesis: an alternative solid-state synthetic methoden_AU
dc.typeJournal Articleen_AU
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