Electrochemical testing of iron phosphor tungsten bronzes as potential electrode material
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In this work, synthesized 12-tungstenphosphoric acid (H3PW12O40 ∙ nH2O, PWA) was further
ionically exchanged with Fe3+ ions, which led to the formation of the FePWA salt (FePW12O40 x nH2O). FePWA was then subjected to thermal analysis (TGA/DTA), which determined the phase transition temperature ( i.e., when the Keggin anion collapses). The temperature of collapsing the Keggin anion is about 600 °C, at which phosphate tungsten bronzes doped with iron (FePWB) are obtained. Obtained FePWB was further characterized by XRPD and FTIR, which confirmed the formation of the desired structure. FePWA and FePWB were examined as an electrode material for aqueous rechargeable batteries due to the channels and cavities present in their structure. Experiments were done in aqueous solutions of 6 M LiNO3 by cyclic voltammetry. The differences in the redox processes of heteropoly acid salts and iron-doped bronze were discussed thoroughly and correlated with the XRPD and FTIR results. The catalytic activ...ity is also investigated by Briggs-Rauscher method followed potentiometricaly.
Кључне речи:
12-tungstenphosphoric acid / Fe3+ / thermal analysis / catalytic activityИзвор:
Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia, 2023, 55-55Издавач:
- Serbian Ceramic Society
Институција/група
IHTMTY - CONF AU - Acković, Jovana AU - Nedić, Zoran AU - Petrović, Tamara AU - Micić, Ružica AU - Pagnacco, Maja AU - Tančić, Pavle PY - 2023 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/6628 AB - In this work, synthesized 12-tungstenphosphoric acid (H3PW12O40 ∙ nH2O, PWA) was further ionically exchanged with Fe3+ ions, which led to the formation of the FePWA salt (FePW12O40 x nH2O). FePWA was then subjected to thermal analysis (TGA/DTA), which determined the phase transition temperature ( i.e., when the Keggin anion collapses). The temperature of collapsing the Keggin anion is about 600 °C, at which phosphate tungsten bronzes doped with iron (FePWB) are obtained. Obtained FePWB was further characterized by XRPD and FTIR, which confirmed the formation of the desired structure. FePWA and FePWB were examined as an electrode material for aqueous rechargeable batteries due to the channels and cavities present in their structure. Experiments were done in aqueous solutions of 6 M LiNO3 by cyclic voltammetry. The differences in the redox processes of heteropoly acid salts and iron-doped bronze were discussed thoroughly and correlated with the XRPD and FTIR results. The catalytic activity is also investigated by Briggs-Rauscher method followed potentiometricaly. PB - Serbian Ceramic Society C3 - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia T1 - Electrochemical testing of iron phosphor tungsten bronzes as potential electrode material SP - 55 EP - 55 UR - https://hdl.handle.net/21.15107/rcub_cer_6628 ER -
@conference{ author = "Acković, Jovana and Nedić, Zoran and Petrović, Tamara and Micić, Ružica and Pagnacco, Maja and Tančić, Pavle", year = "2023", abstract = "In this work, synthesized 12-tungstenphosphoric acid (H3PW12O40 ∙ nH2O, PWA) was further ionically exchanged with Fe3+ ions, which led to the formation of the FePWA salt (FePW12O40 x nH2O). FePWA was then subjected to thermal analysis (TGA/DTA), which determined the phase transition temperature ( i.e., when the Keggin anion collapses). The temperature of collapsing the Keggin anion is about 600 °C, at which phosphate tungsten bronzes doped with iron (FePWB) are obtained. Obtained FePWB was further characterized by XRPD and FTIR, which confirmed the formation of the desired structure. FePWA and FePWB were examined as an electrode material for aqueous rechargeable batteries due to the channels and cavities present in their structure. Experiments were done in aqueous solutions of 6 M LiNO3 by cyclic voltammetry. The differences in the redox processes of heteropoly acid salts and iron-doped bronze were discussed thoroughly and correlated with the XRPD and FTIR results. The catalytic activity is also investigated by Briggs-Rauscher method followed potentiometricaly.", publisher = "Serbian Ceramic Society", journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia", title = "Electrochemical testing of iron phosphor tungsten bronzes as potential electrode material", pages = "55-55", url = "https://hdl.handle.net/21.15107/rcub_cer_6628" }
Acković, J., Nedić, Z., Petrović, T., Micić, R., Pagnacco, M.,& Tančić, P.. (2023). Electrochemical testing of iron phosphor tungsten bronzes as potential electrode material. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia Serbian Ceramic Society., 55-55. https://hdl.handle.net/21.15107/rcub_cer_6628
Acković J, Nedić Z, Petrović T, Micić R, Pagnacco M, Tančić P. Electrochemical testing of iron phosphor tungsten bronzes as potential electrode material. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:55-55. https://hdl.handle.net/21.15107/rcub_cer_6628 .
Acković, Jovana, Nedić, Zoran, Petrović, Tamara, Micić, Ružica, Pagnacco, Maja, Tančić, Pavle, "Electrochemical testing of iron phosphor tungsten bronzes as potential electrode material" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):55-55, https://hdl.handle.net/21.15107/rcub_cer_6628 .