The world of two-dimensional carbides and nitrides (MXenes)

Science, Год журнала: 2021, Номер 372(6547)

Опубликована: Июнь 10, 2021

A family of thin materials Two-dimensional (2D) have attracted interest because the unusual properties that emerge in these confined structures. There is a growing 2D metal carbides and nitrides known as MXenes contain an odd number layers which metals (M) sandwich carbon or nitrogen (X) layers. VahidMohammadi et al. reviewed progress synthesizing this library materials. Mixed-metal combinations can be used, well range surface terminations, making it possible to tune properties. However, there are still challenges improving synthesis methods developing techniques scaled up. Science , abf1581, issue p. eabf1581

Язык: Английский

---

Ten Years of Progress in the Synthesis and Development of MXenes

Advanced Materials, Год журнала: 2021, Номер 33(39)

Опубликована: Авг. 16, 2021

Abstract Since their discovery in 2011, the number of 2D transition metal carbides and nitrides (MXenes) has steadily increased. Currently more than 40 MXene compositions exist. The ultimate is far greater time they may develop into largest family materials known. MXenes’ unique properties, such as metal‐like electrical conductivity reaching ≈20 000 S cm −1 , render them quite useful a large applications, including energy storage, optoelectronic, biomedical, communications, environmental. papers patents published been growing quickly. first generation synthesized using selective etching layers from MAX phases, layered carbonitrides hydrofluoric acid. then, multiple synthesis approaches have developed, mixture fluoride salts various acids, non‐aqueous etchants, halogens, molten salts, allowing for new MXenes with better control over surface chemistries. Herein, brief historical overview 10 years research perspective on future development are provided. fact that production readily scalable aqueous environments, high yields bodes well commercialization.

Язык: Английский

---

MXene chemistry, electrochemistry and energy storage applications

Nature Reviews Chemistry, Год журнала: 2022, Номер 6(6), С. 389 - 404

Опубликована: Апрель 20, 2022

Язык: Английский

---

Advances in the Synthesis of 2D MXenes

Advanced Materials, Год журнала: 2021, Номер 33(39)

Опубликована: Авг. 22, 2021

Abstract 2D transition metal carbides, nitrides, and carbonitrides, also known as MXenes, are versatile materials due to their adjustable structure rich surface chemistry. The physical chemical diversity has recognized MXenes a potential material with wide spectrum of application domains. Since the discovery in 2011, variety synthetic routes been proposed advancement toward large‐scale preparing methods for MXene nanosheets derivative products. Herein, critical synthesis aspects operating conditions that influence characteristics discussed detail. emerging etching including HF methods, situ HF‐forming electrochemical alkali molten salt well delamination strategies discussed. Considering future developments practical applications, antioxidation summarized. In summary, generalized overview protocols an outlook current challenges promising technologies preparation stable storage is provided.

Язык: Английский

---

Fundamentals of MXene synthesis

Nature Synthesis, Год журнала: 2022, Номер 1(8), С. 601 - 614

Опубликована: Авг. 1, 2022

Язык: Английский

---

2D MXenes: Tunable Mechanical and Tribological Properties

Advanced Materials, Год журнала: 2021, Номер 33(17)

Опубликована: Март 18, 2021

Abstract 2D transition metal carbides, nitrides, and carbonitrides, known as MXenes, were discovered in 2011 have grown to prominence energy storage, catalysis, electromagnetic interference shielding, wireless communications, electronic, sensors, environmental biomedical applications. In addition their high electrical conductivity electrochemically active behavior, MXenes’ mechanical properties, flexibility, strong adhesion properties play crucial roles almost all of these growing Although prove be critical impressive performance, the tribological understanding well relation synthesis process, is yet fully explored. Here, a fundamental overview provided effects compositions, synthesis, processing steps on are discussed. Additionally, perspective compositional control MXenes for innovative structural, low‐friction, low‐wear performance current upcoming applications provided. It established here that behavior essential quickly

Язык: Английский

---

MXenes: Two-Dimensional Building Blocks for Future Materials and Devices

ACS Nano, Год журнала: 2021, Номер 15(4), С. 5775 - 5780

Опубликована: Апрель 27, 2021

ADVERTISEMENT RETURN TO ISSUEEditorialNEXTMXenes: Two-Dimensional Building Blocks for Future Materials and DevicesYury GogotsiYury GogotsiMore by Yury Gogotsihttp://orcid.org/0000-0001-9423-4032 Qing HuangQing HuangMore Huanghttp://orcid.org/0000-0001-7083-9416Cite this: ACS Nano 2021, 15, 4, 5775–5780Publication Date (Web):April 27, 2021Publication History Published online27 April 2021Published inissue 27 2021https://pubs.acs.org/doi/10.1021/acsnano.1c03161https://doi.org/10.1021/acsnano.1c03161editorialACS PublicationsCopyright © 2021 American Chemical Society. This publication is available under these Terms of Use. Request reuse permissions free to access through this site. Learn MoreArticle Views26903Altmetric-Citations200LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated reflect usage leading up last few days.Citations number other articles citing article, calculated Crossref daily. Find more information about citation counts.The Altmetric Attention Score a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail (2 MB) Get e-AlertscloseSUBJECTS:Electrical conductivity,Energy storage,Etching,Transition metals,Two dimensional materials e-Alerts

Язык: Английский

---

Direct synthesis and chemical vapor deposition of 2D carbide and nitride MXenes

Science, Год журнала: 2023, Номер 379(6638), С. 1242 - 1247

Опубликована: Март 23, 2023

Two-dimensional transition-metal carbides and nitrides (MXenes) are a large family of materials actively studied for various applications, especially in the field energy storage. MXenes commonly synthesized by etching layered ternary compounds, called MAX phases. We demonstrate direct synthetic route scalable atom-economic synthesis MXenes, including compounds that have not been from phases, reactions metals metal halides with graphite, methane, or nitrogen. The enables chemical vapor deposition growth MXene carpets complex spherulite-like morphologies form through buckling release carpet to expose fresh surface further reaction. directly showed excellent storage capacity lithium-ion intercalation.

Язык: Английский

---

A critical analysis of the X-ray photoelectron spectra of Ti3C2Tz MXenes

Matter, Год журнала: 2021, Номер 4(4), С. 1224 - 1251

Опубликована: Фев. 16, 2021

Since their discovery in 2011, MXenes have garnered worldwide interest. Given 2D structure, surface, or termination, chemistries play a vital role most applications. X-ray photoelectron spectroscopy (XPS) is one of the common characterization tools for quantifying surface terminations and overall chemistry. Herein, we critically review XPS fitting models proposed Ti3C2Tz MXene literature make case that they are at best incomplete worst contradictory. We propose new algorithm based on all data obtained from previously published studies method Ti3C2Tz. In our approach, assign Ti 2p peak 455.1 eV to C–Ti–O\O\O, peaks 456.0, 457.0, 457.9, 459.6 assigned C–Ti–O\O\F, C–Ti–O\F\F, C–Ti–F\F\F, TiO2-xF2x, respectively. The first four represent possible atom terminations; last an oxyfluoride. C 1s 282 eV, ascribed atoms surrounded by 6 atoms, so universal it can almost be used as reference.

Язык: Английский

---

A Review on MXene Synthesis, Stability, and Photocatalytic Applications

ACS Nano, Год журнала: 2022, Номер 16(9), С. 13370 - 13429

Опубликована: Сен. 12, 2022

Photocatalytic water splitting, CO2 reduction, and pollutant degradation have emerged as promising strategies to remedy the existing environmental energy crises. However, grafting of expensive less abundant noble-metal cocatalysts on photocatalyst materials is a mandatory practice achieve enhanced photocatalytic performance owing ability extract electrons efficiently from enable rapid/enhanced catalytic reaction. Hence, developing highly efficient, inexpensive, noble-metal-free composed earth-abundant elements considered noteworthy step toward considering photocatalysis more economical strategy. Recently, MXenes (two-dimensional (2D) transition-metal carbides, nitrides, carbonitrides) shown huge potential alternatives for cocatalysts. several excellent properties, including atomically thin 2D morphology, metallic electrical conductivity, hydrophilic surface, high specific surface area. In addition, they exhibit Gibbs free intermediate H atom adsorption close zero than that commercial Pt-based cocatalyst, Fermi level position above H2 generation potential, an capture activate molecules. Therefore, there growing interest in MXene-based various events. this review, we focus recent advances synthesis with 0D morphologies, stability MXenes, photocatalysts evolution, degradation. The challenges possible future directions enhance are also discussed.

Язык: Английский

---