{"title":"聚苯胺修饰CdAl2O4改善碱性介质中析氧过程的简易制备","authors":"Iqra Bibi, Samira Elaissi, Tahani Rahil Aldhafeeri, Syed Kashif Ali, Kiran Tahir, Abhinav Kumar","doi":"10.1007/s11243-025-00651-9","DOIUrl":null,"url":null,"abstract":"<div><p>Considering environmental issues, which involve climate change and shortage of hydrocarbon resources, the usage of environmentally friendly technologies in energy generation has become essential worldwide. In this regard, water splitting is the best way of renewable energy source. Developing an efficient, high-performance and robust electrocatalyst became a significant goal to improve water splitting. For this purpose, we fabricated CdAl<sub>2</sub>O<sub>4</sub>@PANI (CAO@PANI) composite via hydrothermal approach for oxygen evolution reaction (OER). The CAO@PANI displayed varied morphologies, including nanoparticles of CAO affixed to PANI sheets, which enhance the surface area for adsorption of electrolyte ions. The electrocatalyst based on CAO@PANI nanostructure has enhanced efficiency relative to CAO as indicated by overpotential (η) of 192 mV at 10 mA/cm<sup>2</sup> j (current density) and remarkable durability (50 h). Additionally, CAO@PANI nanostructure exhibits an excellent Tafel plot (36 mV/dec) along with reduced charge transfer resistance (<i>R</i><sub>ct</sub> = 3.4 Ω). The fabricated catalyst also demonstrated notable double-layer capacitance (<i>C</i><sub>dl</sub> = 48 mF/cm<sup>2</sup>) and greater electrochemically active surface area (ECSA = 1200 cm<sup>2</sup>). The excellent outcomes may be associated to the combined effect of CAO and PANI, which has a distinctive π-conjugated framework and a variety of nitrogen species with lone pairs of electrons. This configuration facilitates a steady flow of OH<sup>−</sup> ion and enhances its adsorption capacity on the surface of CAO@PANI, making it a remarkably effective and reliable catalyst for OER.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 5","pages":"719 - 729"},"PeriodicalIF":1.7000,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Facile fabrication of CdAl2O4 adorned on polyaniline for improving oxygen evolution process in basic media\",\"authors\":\"Iqra Bibi, Samira Elaissi, Tahani Rahil Aldhafeeri, Syed Kashif Ali, Kiran Tahir, Abhinav Kumar\",\"doi\":\"10.1007/s11243-025-00651-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Considering environmental issues, which involve climate change and shortage of hydrocarbon resources, the usage of environmentally friendly technologies in energy generation has become essential worldwide. In this regard, water splitting is the best way of renewable energy source. Developing an efficient, high-performance and robust electrocatalyst became a significant goal to improve water splitting. For this purpose, we fabricated CdAl<sub>2</sub>O<sub>4</sub>@PANI (CAO@PANI) composite via hydrothermal approach for oxygen evolution reaction (OER). The CAO@PANI displayed varied morphologies, including nanoparticles of CAO affixed to PANI sheets, which enhance the surface area for adsorption of electrolyte ions. The electrocatalyst based on CAO@PANI nanostructure has enhanced efficiency relative to CAO as indicated by overpotential (η) of 192 mV at 10 mA/cm<sup>2</sup> j (current density) and remarkable durability (50 h). Additionally, CAO@PANI nanostructure exhibits an excellent Tafel plot (36 mV/dec) along with reduced charge transfer resistance (<i>R</i><sub>ct</sub> = 3.4 Ω). The fabricated catalyst also demonstrated notable double-layer capacitance (<i>C</i><sub>dl</sub> = 48 mF/cm<sup>2</sup>) and greater electrochemically active surface area (ECSA = 1200 cm<sup>2</sup>). The excellent outcomes may be associated to the combined effect of CAO and PANI, which has a distinctive π-conjugated framework and a variety of nitrogen species with lone pairs of electrons. This configuration facilitates a steady flow of OH<sup>−</sup> ion and enhances its adsorption capacity on the surface of CAO@PANI, making it a remarkably effective and reliable catalyst for OER.</p></div>\",\"PeriodicalId\":803,\"journal\":{\"name\":\"Transition Metal Chemistry\",\"volume\":\"50 5\",\"pages\":\"719 - 729\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2025-05-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transition Metal Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11243-025-00651-9\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transition Metal Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11243-025-00651-9","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Facile fabrication of CdAl2O4 adorned on polyaniline for improving oxygen evolution process in basic media
Considering environmental issues, which involve climate change and shortage of hydrocarbon resources, the usage of environmentally friendly technologies in energy generation has become essential worldwide. In this regard, water splitting is the best way of renewable energy source. Developing an efficient, high-performance and robust electrocatalyst became a significant goal to improve water splitting. For this purpose, we fabricated CdAl2O4@PANI (CAO@PANI) composite via hydrothermal approach for oxygen evolution reaction (OER). The CAO@PANI displayed varied morphologies, including nanoparticles of CAO affixed to PANI sheets, which enhance the surface area for adsorption of electrolyte ions. The electrocatalyst based on CAO@PANI nanostructure has enhanced efficiency relative to CAO as indicated by overpotential (η) of 192 mV at 10 mA/cm2 j (current density) and remarkable durability (50 h). Additionally, CAO@PANI nanostructure exhibits an excellent Tafel plot (36 mV/dec) along with reduced charge transfer resistance (Rct = 3.4 Ω). The fabricated catalyst also demonstrated notable double-layer capacitance (Cdl = 48 mF/cm2) and greater electrochemically active surface area (ECSA = 1200 cm2). The excellent outcomes may be associated to the combined effect of CAO and PANI, which has a distinctive π-conjugated framework and a variety of nitrogen species with lone pairs of electrons. This configuration facilitates a steady flow of OH− ion and enhances its adsorption capacity on the surface of CAO@PANI, making it a remarkably effective and reliable catalyst for OER.
期刊介绍：
Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc.
Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.
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