Pt doped and Pt supported La1-xSrxCoO3: lower activity of Pt4+ towards the CO poisoning effect in formic acid and methanol electro-oxidation compared to Pt metal

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dc.contributor.author Bisht, Anuj
dc.contributor.author Zhang, Peng
dc.contributor.author Shivakumara, C.
dc.contributor.author Sharma, Sudhanshu
dc.date.accessioned 2015-06-26T06:08:17Z
dc.date.available 2015-06-26T06:08:17Z
dc.date.issued 2015-05
dc.identifier.citation Bisht, Anuj; Zhang, Peng; Shivakumara, Chikkadasappa and Sharma, Sudhanshu, “Pt doped and Pt supported La1-xSrxCoO3: lower activity of Pt4+ towards the CO poisoning effect in formic acid and methanol electro-oxidation compared to Pt metal, The Journal of Physical Chemistry C, DOI: 10.1021/acs.jpcc.5b01241, May 2015. en_US
dc.identifier.issn 0022-3654
dc.identifier.uri http://dx.doi.org/10.1021/acs.jpcc.5b01241
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1773
dc.description.abstract Pt-supported La1–xSrxCoO3 and Pt-doped La1–xSrxCoO3 are synthesized using chemical reduction and solution combustion method, respectively. Chemical reduction is carried out using formaldehyde as a reducing agent giving Pt-supported La1–xSrxCoO3. Solution combustion method is used to prepare Pt-doped La1–xSrxCoO3. Detailed characterization using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) surface area measurement, and transmission electron microscopy (TEM) is carried out to distinguish the Pt-supported and Pt-doped compounds in terms of their morphology and Pt oxidations states. TEM results indeed show the differences in their morphology. Further, electrochemical measurements are performed in neutral medium to differentiate their electrochemical activity. Cyclic voltammetry (CV) shows noticeable differences between Pt-supported La1–xSrxCoO3 and Pt-doped La1–xSrxCoO3. Importantly, our results show that Pt4+ in doped compound has poor to zero electrocatalytic activity toward formic acid and methanol electro-oxidation in comparison to Pt0 in supported compound. This study shows that metallic Pt in zero oxidation state is a superior catalyst to Pt in +4 oxidation state. en_US
dc.description.statementofresponsibility by Anuj Bisht et al.
dc.format.extent Vol. 119, No. 25, pp 14126–14134
dc.language.iso en_US en_US
dc.publisher American Chemical Society en_US
dc.subject Formic acid en_US
dc.subject La1–xSrxCoO3 en_US
dc.subject Methanol electro-oxidation en_US
dc.subject X-ray diffraction en_US
dc.subject X-ray photoelectron spectroscopy en_US
dc.title Pt doped and Pt supported La1-xSrxCoO3: lower activity of Pt4+ towards the CO poisoning effect in formic acid and methanol electro-oxidation compared to Pt metal en_US
dc.type Article en_US
dc.relation.journal The Journal of Physical Chemistry C


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