{"title":"Synergistic photocatalytic and energy performance of Ti2C MXene/ZnCo2O4 nanocomposites for environmental remediation","authors":"","doi":"10.1016/j.ssc.2024.115628","DOIUrl":null,"url":null,"abstract":"<div><p>The growing interest in 2D MXenes and MXene-based nanomaterials stems from their unique properties, including significant interlayer spacing, adaptability, safety, surface area, and thermal conductivity. This study presents a comprehensive analysis of the synthesis, characterization, and performance evaluation of Ti<sub>2</sub>C MXene and its ZnCo<sub>2</sub>O<sub>4</sub> nanocomposites. The Ti<sub>2</sub>C (94 %)/ZnCo<sub>2</sub>O<sub>4</sub> (6 %) heterostructure exhibited low overpotentials of 365 mV and 474 mV for achieving ten mA/cm<sup>2</sup> and 100 mA/cm<sup>2</sup> current densities in the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively, with Tafel slopes of 44 and 108 mV/dec. The high efficiency in splitting water and making hydrogen is due to the heterostructure's more surface-active sites, better electron transfer, and stronger electronic solid coupling. Additionally, the MXene-based nanocomposites demonstrated significant efficacy in the photodegradation of Methylene blue, with the Ti<sub>2</sub>C (94 %) and ZnCo<sub>2</sub>O<sub>4</sub> (6 %) composite exhibiting the highest degradation rate of 80 %. This work introduces a promising design approach to mitigate the performance deterioration of 2D photocatalysts, potentially advancing the development of future high-performance photocatalysts.</p></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":null,"pages":null},"PeriodicalIF":2.1000,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Communications","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0038109824002059","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0
Abstract
The growing interest in 2D MXenes and MXene-based nanomaterials stems from their unique properties, including significant interlayer spacing, adaptability, safety, surface area, and thermal conductivity. This study presents a comprehensive analysis of the synthesis, characterization, and performance evaluation of Ti2C MXene and its ZnCo2O4 nanocomposites. The Ti2C (94 %)/ZnCo2O4 (6 %) heterostructure exhibited low overpotentials of 365 mV and 474 mV for achieving ten mA/cm2 and 100 mA/cm2 current densities in the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively, with Tafel slopes of 44 and 108 mV/dec. The high efficiency in splitting water and making hydrogen is due to the heterostructure's more surface-active sites, better electron transfer, and stronger electronic solid coupling. Additionally, the MXene-based nanocomposites demonstrated significant efficacy in the photodegradation of Methylene blue, with the Ti2C (94 %) and ZnCo2O4 (6 %) composite exhibiting the highest degradation rate of 80 %. This work introduces a promising design approach to mitigate the performance deterioration of 2D photocatalysts, potentially advancing the development of future high-performance photocatalysts.
期刊介绍：
Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged.
A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions.
The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.
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