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MXenes is the denomination of several transition metal carbides, nitrides or carbonitrides tipically obtained by chemical delamination of 3D ternary (or quaternary) compounds …
Two-dimensional transition metal carbides and nitrides, known as MXenes, are currently considered as energy storage materials. A generic Lewis acidic etching route for preparing high-rate negative ...
MXenes are a novel family of 2D materials, which are prepared by etching A element from MAX phase. The MAX phase has a general formula M n+1 AX n (n = 1–3), where M represents the transition metal, A belongs to a group IIIA or IVA elements, and X represents carbon and/or nitrogen. Their unique surface morphologies, abundant surface negative ...
DOI: 10.1021/acs.jpcc.3c06956 Corpus ID: 267530867; Unveiling the Energy Storage Mechanism of MXenes under Acidic Conditions through Transitions of Surface Functionalizations
A growing family of two-dimensional (2D) transition metal carbides or nitrides, known as MXenes, have received increasing attention because of their unique properties, such as metallic conductivity and good hydrophilicity. The studies on MXenes have been widely pursued, given the composition diversity of the parent MAX phases. This review focuses …
DOI: 10.1016/j.vacuum.2023.112150 Corpus ID: 258500848; Collaborative activation mechanism in double transition metal MXenes anode: An effective method to improve the capacitance of sodium ion battery
This investigation explores nitrogen-doping mechanisms in MXenes with tailored surface chemistries, utilizing a blend of experimental approaches and density functional theory calculations. The distinct roles of nitrogen dopant sites are explored, and the evolution of the electronic structure and stability of the material before and after nitrogen modifications …
MXenes, the newest family member of the two-dimensional materials have been widely investigated for different applications, particularly in the energy storage realm. With regard to this, MXene precursors have attained widespread attention for the application in electrochemical energy storage devices especially supercapacitors and batteries. This …
The high capacitive performance of MXenes in acidic electrolytes has made them potential electrode materials for supercapacitors. In this study, we conducted a structural analysis of MXene surface functionalizations by identifying the surface group distribution pattern and revealed the energy storage process of MXene surface chemistry by combining a …
MXene nanomaterials have attracted great interest as the electrode of supercapacitors. However, its energy storage mechanisms in organic electrolytes are still unclear. This work investigated the size effect of cations (i.e., Li+, Na+, K+, and EMIM+) on the capacitive behaviors of MXene-based supercapacitors. The experimental results demonstrate that …
@article{Wan2024InfluenceOI, title={Influence of ion size on the charge storage mechanism of MXenes: a combination of experimental and computational study}, author={Huiwen Wan and Rui Wang and Huiyang Fan and Hongbo Gao and Yucheng Chen and Zhu Liu}, journal={Waste Disposal & Sustainable Energy}, year={2024}, url={https://api ...
DOI: 10.1016/j.seppur.2023.124912 Corpus ID: 261266251; Simultaneous elimination of U(VI) and Eu(III) by phytic acid decorated MXenes@MOFs composites in water: Performance, kinetics and mechanism
The high capacitive performance of MXenes in acidic electrolytes have made them potential electrode materials for supercapacitors. In this study, we conducted a structural analysis of MXene surface functionalizations by identifying the surface group distribution pattern and revealed the energy storage process of MXene surface chemistry …
MXene is one of the fast-growing family of 2D materials that exhibits remarkable physiochemical properties that cater numerous applications in the field of …
Two dimensional (2D) carbides and nitrides, called MXenes, discovered in 2011, constitute a family of ≈ 30 members with different chemical compositions and chemical order. New compositions are being discovered routinely. The ease of MXene synthesis and their ...
The synthetic procedures of Nb 3 C 4 @UiO-66-NH 2-PA was displayed in Fig. 1, which was constructed via a three-step approach with minor modification [21] rstly, 2 g of Nb 3 AlC 4 powder and 40 mL of HF solution (40 wt%) were mixed well in a 250 mL of beaker, and then the mixtures were transferred into a Teflon flask (100 mL) at room temperature and held …
Since the discovery of Ti3C2Tx in 2011, the family of two‐dimensional transition metal carbides, carbonitrides, and nitrides (collectively known as MXenes) has quickly attracted the attention of those developing energy storage applications such as electrodes for supercapacitors with acidic aqueous electrolytes. The excellent performance of these …
Developing efficient catalysts for the capture and direct conversion of CO2 into various chemicals is essential to alleviate CO2 emissions and minimize the negative environmental effects of fossil fuels. Combining density functional theory calculations and microkinetic analysis, we propose that single Bi atoms supported on V2CO2 MXenes (Bi@V2CO2) …
MXenes, a class of two-dimensional materials, have garnered significant attention due to their unique properties and versatile applications in various fields. This review provides a …
In the past 2 years, the MXenes field has seen significant increases in the numbers of research areas and publications. The 2nd International Conference on MXenes, held in May 2019 at the Beijing University of …
The high capacitive performance of MXenes in acidic electrolytes have made them potential electrode materials for supercapacitors. In this study, we conducted a structural analysis of MXene ...
The search for an ecofriendly treatment for the strong greenhouse gas SF6 has become a global hot issue. Herein, the mixed-terminal Ti3C2T x MXene catalyzing conversion of SF6 in aqueous solution was explored. The catalytic network on realistic Ti3C2T x was constructed. By theoretical calculations, target products and the microscopic reaction …
A change in the pseudocapacitive behavior of MXenes during cycling can be explained by in situ X-ray diffraction studies, revealing solvent co-intercalation in the first cycle for the morphologically different MXenes. MXenes attract tremendous research efforts since their discovery in 2011 due to their unique physical and chemical properties, allowing for …
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MXene is a recently emerged multifaceted two-dimensional (2D) material that is made up of surface-modified carbide, providing its flexibility and variable composition. They consist of layers of early transition metals (M), interleaved with n layers of carbon or nitrogen (denoted as X) and terminated with surface functional groups (denoted as Tx/Tz) with a general …
MXenes are an emerging family of highly-conductive 2D materials which have demonstrated state-of-the-art performance in electromagnetic interference shielding, chemical sensing, and energy storage
MXenes have shown redox charge storage and delivery within milliseconds, detection of trace amounts of various gases with ultrahigh sensitivity, and the ability to adsorb urea and shield against …
In order to achieve high-performance MXenes materials, the mechanism of atomic element doping from three aspects of lattice optimization, functional substitution, and interface modification is analyzed and summarized, aiming to provide clues for developing new ...
i-MXenes, o-MXenes, and solid solution MXenes, including high-entropy ones, are of great interest owing to a wide range of possibilities in tuning their structures and properties. Nitride MXenes have been predicted to have a variety of attractive properties, from ferromagnetism to higher conductivity than carbides or semiconducting properties ( 155 ).
1. Introduction. Antibiotic residues not only affect the stability of ecosystems, but also pose a threat to human health and biodiversity. The ensuing antibiotic-resistant bacteria and antibiotic-resistant genes can lead to a decrease in the human body''s tolerance to antibiotics and increase the difficulty of clinical treatment [1], [2].As an emerging porous polymer …
Among the main advantages of MXenes etching through HF solution, its versatility (most MXenes can be produced by it) and simplicity stand out, making this route extensively applied [3]. In addition, recent studies showed the applicability of this pioneering procedure for other carbide precursors which do not belong to the MAX phases group, such as Zr 3 …
As a result of their wide range of potential in the realms of energy conversion and storage, MXenes have astonished the scientific community [ 19 ]. In comparison to other 2D …
This review comprehensively surveys the literature from the seminal MXene paper to the present, offering insights into the factors, latest advancements, …
Successful synthesis of MXenes with oxygen, imido, sulfur, chlorine, selenium, bromine, and tellurium surface terminations, as well as bare MXenes (no surface termination), was …
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