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Keyword Author: 2D materials

Laser-induced enhancement for the detection of isopropyl alcohol in V2CTx MXene films

The development of efficient gas sensing material having good sensitivity, working at room temperature, and quick response and recovery is imperative for indoor environmental monitoring, especially for detecting volatile organic compounds (VOC). There has been significant interest in 2D materials for gas sensors owing to their high surface area. However, the sensitivity of these materials …

Laser-induced enhancement for the detection of isopropyl alcohol in V2CTx MXene films Read More »

Copper-Infused MXene from MAX Phase for Enhanced Electrochemical Ammonia Production

The electrochemical conversion of nitrate to value-added ammonia is a green alternative to the energy-intensive Haber–Bosch process. However, due to inefficient catalysts, guiding the reaction route towards selective ammonia synthesis is still challenging. Here, we report a highly efficient Cu-infused V2C catalyst, synthesized via the molten salt synthesis method using selective CuCl2 etching. The optimized …

Copper-Infused MXene from MAX Phase for Enhanced Electrochemical Ammonia Production Read More »

Recyclable HF-free Ti3C2Tx 3D-printed supercapacitors: their second life in sodium-ion batteries

2D MXenes represent a useful class of materials in various applications and the main constraint for their bulk production is the requirement of hazardous hydrogen fluoride (HF) as an etching agent. Molten salt synthesis is one of the emerging HF-free techniques to produce MXenes, where a mixture of etching salts is heated till their melting …

Recyclable HF-free Ti3C2Tx 3D-printed supercapacitors: their second life in sodium-ion batteries Read More »

High Performance MXene/MnCo2O4 Supercapacitor Device for Powering Small Robotics

The development of advanced energy storage devices is critical for various applications including robotics and portable electronics. The energy storage field faces significant challenges in designing devices that can operate effectively for extended periods while maintaining exceptional electrochemical performance. Supercapacitors, which bridge the gap between batteries and conventional capacitors, offer a promising solution due to …

High Performance MXene/MnCo2O4 Supercapacitor Device for Powering Small Robotics Read More »

The rise of 3D/4D-printed water harvesting materials

The incorporation of cutting-edge technology in developing diverse water harvesters enhances the efficiency of water harvesting systems. Fog harvesting device (FHD) and solar vapor generation device (SVGD) have emerged as environmentally friendly, cost-effective, and efficient methods for generating clean and fresh water, gaining significant attention in recent years. Additionally, there has been extensive reporting on …

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Surface-Engineered 2D Nanomaterials in Gas Sensors: Advancement and Challenges

2D nanomaterials like transition metal dichalcogenides (TMDs), MXene, nitrides, and black phosphorus-based gas sensors have garnered extensive attention in recent decades. The extra ordinary physicochemical and electrical properties of 2D nanomaterials make them highly sensitive toward gas molecules at room temperature. However, despite their potential, the current gas sensing technology suffers from inadequate selectivity, inaccurate …

Surface-Engineered 2D Nanomaterials in Gas Sensors: Advancement and Challenges Read More »

MXene-Based Nanocomposites for Supercapacitors: Fundamentals and Applications

MXene-based nanocomposite materials with other 2D materials have made a large impact in the field of energy storage, particularly in the area of supercapacitors. Combining conductive 2D MXene with other 2D materials, such as transition metal oxide, transition metal dichalcogenides, and layered double hydroxide, improves the electrochemical energy storage properties of resulting MXene-based nanocomposites. The …

MXene-Based Nanocomposites for Supercapacitors: Fundamentals and Applications Read More »

Nanoarchitectonics of Laser Induced MAX 3D-Printed Electrode for Photo-Electrocatalysis and Energy Storage Application with Long Cyclic Durability of 100 000 Cycles

3D printing, a rapidly expanding domain of additive manufacturing, enables the fabrication of intricate 3D structures with adjustable fabrication parameters and scalability. Nonetheless, post-fabrication, 3D-printed materials often require an activation step to eliminate non-conductive polymers, a process traditionally achieved through chemical, thermal, or electrochemical methods. These conventional activation techniques, however, suffer from inefficiency and inconsistent …

Nanoarchitectonics of Laser Induced MAX 3D-Printed Electrode for Photo-Electrocatalysis and Energy Storage Application with Long Cyclic Durability of 100 000 Cycles Read More »

MXene 3D/4D Printing: Ink Formulation and Electrochemical Energy Storage Applications

2D MXenes are a rapidly expanding class of 2D materials with a broad spectrum of electrochemical applications, particularly in the electrochemical energy storage area. Concurrently, 3D and 4D printing techniques have garnered significant research attention offering customized designs, rapid prototyping, and cost-effective scalable production. Integrating MXene into the 3D/4D printed structures offers a promising path …

MXene 3D/4D Printing: Ink Formulation and Electrochemical Energy Storage Applications Read More »

Periodic Table Exploration of MXenes for Efficient Electrochemical Nitrate Reduction to Ammonia

Applying electrochemical nitrate reduction reaction (NO3RR) to produce ammonia offers a sustainable alternative to the energy-intensive Haber-Bosch process, which is crucial for clean energy and agricultural applications. While 2D MXenes hold great promise as electrocatalysts for NO3RR, their application for ammonia production remains underexplored. This study combines experimental and theoretical approaches to evaluate the catalytic …

Periodic Table Exploration of MXenes for Efficient Electrochemical Nitrate Reduction to Ammonia Read More »

Integrated free-standing WS2 3D-printed carbon supercapacitor with solid state electrolyte

There is a huge need for energy storage devices due to the depletion of natural gas and the increasing requirement for portable electronic gadgets. Fused deposition modeling (FDM) 3D-printing has drawn tremendous interest for the fabrication of batteries and supercapacitors (SCs) due to its tabletop manufacturing technique, bespoke design, fast prototyping and user-friendly process. However, …

Integrated free-standing WS2 3D-printed carbon supercapacitor with solid state electrolyte Read More »

2D Methyl Germanane Enhanced 3D Printed Photoelectrodes

3D printing is a cutting-edge technology, that allows the printing of 3D objects according to the design provided. Nanocarbon electrodes that can be fabricated using 3D printing technology, suffer from a lack of required properties. For enhancing the photoelectrochemical properties of 3D printed electrodes, functionalized germanenes, belonging to the family of 2D materials are used …

2D Methyl Germanane Enhanced 3D Printed Photoelectrodes Read More »

Nanoscopic decoration of multivalent vanadium oxide on Laser-Induced graphene fibers via atomic layer deposition for flexible gel supercapacitors

Composite materials for high energy/power density supercapacitors are of very high importance. The precise well-defined nanoarchitectonics approach is a key element in the construction of high-performance devices. Surface redox reactions that frequently involve the exchange of oxygen atoms are fundamental to pseudocapacitive reactions mostly mediated by transition metal oxides (TMO). This process often changes the …

Nanoscopic decoration of multivalent vanadium oxide on Laser-Induced graphene fibers via atomic layer deposition for flexible gel supercapacitors Read More »

Hydrofluoric acid-free etched MAX on 3D-printed nanocarbon electrode for photoelectrochemical hydrogen production

MXenes have emerged as a promising material for a disparate range of photo-electrochemical conversion and energy storage devices. However, most reported synthesis process involves hydrofluoric acid (HF) and fluoride-based compounds. HF severe toxicity persists impediment to the scalable production and fabrication of MXenes. Thus, fluoride-free protocols are currently being explored. Here, we demonstrate a novel …

Hydrofluoric acid-free etched MAX on 3D-printed nanocarbon electrode for photoelectrochemical hydrogen production Read More »

Multi-Sensing Platform Based on 2D Monoelement Germanane

Covalently functionalized germanane is a novel type of fluorescent probe that can be employed in material science and analytical sensing. Here, a fluorometric sensing platform based on methyl-functionalized germanane (CH3Ge) is developed for gas (humidity and ammonia) sensing, pH (1–9) sensing, and anti-counterfeiting. Luminescence (red–orange) is seen when a gas molecule intercalates into the interlayer …

Multi-Sensing Platform Based on 2D Monoelement Germanane Read More »

Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth

Materials with few layers have been subjected to extensive research for the last few decades owing to their remarkable properties as for example catalysts, optical and electrical devices, or sensors. The properties and electronic structure of these materials can be tailored by the introduction of substituents. In the case of more reactive species, the modification …

Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth Read More »

Covalent Functionalization of Exfoliated Arsenic with Chlorocarbene

Few-layer and monolayer arsenic (arsenene) materials have been attracting great attention mainly from a theoretical perspective. Chemical modification of these materials would expand significantly the range of their applications. Here, we describe a chlorocarbene-mediated modification of exfoliated layered arsenic materials. Carbene-based species are highly reactive and offer further possibilities of functionalization. Our approach for modifying …

Covalent Functionalization of Exfoliated Arsenic with Chlorocarbene Read More »

Cytotoxicity of layered metal phosphorus chalcogenides (MPXY) nanoflakes; FePS3, CoPS3, NiPS3

Metal phosphorus chalcogenides is a new class of 2D materials that have shown interesting semiconducting, electronic, anisotropic, magnetic, dielectric, structural and optical properties. Recently, NiPS3, FePS3 and CoPS3 in particular have been highlighted for promising potential in important energy applications such as electro-catalysts for water splitting and hydrogen storage. However, little is known about the …

Cytotoxicity of layered metal phosphorus chalcogenides (MPXY) nanoflakes; FePS3, CoPS3, NiPS3 Read More »

1T-Phase Transition Metal Dichalcogenides (MoS2, MoSe2, WS2, and WSe2) with Fast Heterogeneous Electron Transfer: Application on Second-Generation Enzyme-Based Biosensor

Two-dimensional transition metal dichalcogenides (TMDs) have been in the spotlight for their intriguing properties, including a tunable band gap and fast heterogeneous electron-transfer (HET) rate. Understandably, they are especially attractive in the field of electrochemical biosensors. In this article, HET capabilities of various TMDs (MoS2, MoSe2, WS2, and WSe2) within group VI chemically exfoliated via …

1T-Phase Transition Metal Dichalcogenides (MoS2, MoSe2, WS2, and WSe2) with Fast Heterogeneous Electron Transfer: Application on Second-Generation Enzyme-Based Biosensor Read More »

Phosphorene and black phosphorus for sensing and biosensing

Two dimensional (2D) materials exhibit highly useful materials properties. Graphene, single sheet transition metals dichalcogenides found plethora applications in various fields, including analytical chemistry. Layered black phosphorus and its single sheet variation (phosphorene) became popular material very recently due to its monoelemental composition, biocompatibility, electrochemical properties, tunable bandgap and resulting optical properties. Here we describe …

Phosphorene and black phosphorus for sensing and biosensing Read More »

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