Phase Engineering of Nanomaterials: Transition Metal Dichalcogenides

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(7), P. 4479 - 4539

Published: March 29, 2024

Crystal phase, a critical structural characteristic beyond the morphology, size, dimension, facet, etc., determines physicochemical properties of nanomaterials. As group layered nanomaterials with polymorphs, transition metal dichalcogenides (TMDs) have attracted intensive research attention due to their phase-dependent properties. Therefore, great efforts been devoted phase engineering TMDs synthesize controlled phases, especially unconventional/metastable for various applications in electronics, optoelectronics, catalysis, biomedicine, energy storage and conversion, ferroelectrics. Considering significant progress synthesis TMDs, we believe that comprehensive review on is promote fundamental studies practical applications. This Review aims provide introduction discussion crystal structures, synthetic strategies, TMDs. Finally, our perspectives challenges opportunities will also be discussed.

Language: Английский

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Phase Engineering of Nanostructural Metallic Materials: Classification, Structures, and Applications

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(3), P. 1247 - 1287

Published: Jan. 23, 2024

Metallic materials are usually composed of single phase or multiple phases, which refers to homogeneous regions with distinct types the atom arrangement. The recent studies on nanostructured metallic provide a variety promising approaches engineer phases at nanoscale. Tailoring size, distribution, and introducing new structures via transformation contribute precise modification in deformation behaviors electronic nanostructural materials. Therefore, engineering is expected pave an innovative way develop advanced mechanical functional properties. In this review, we present comprehensive overview heterogeneous nanophases fundamental understanding nanophase formation for materials, including supra-nano-dual-phase nanoprecipitation- nanotwin-strengthened We first review thermodynamics kinetics principles structure, followed by discussion mechanism structural as well optimization structure electrocatalysis. Then, demonstrate origin, classification, properties characteristics dense nanoprecipitations nanotwins. Finally, summarize some potential research challenges field short perspective scientific implications design next-generation

Language: Английский

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Breaking Highly Ordered PtPbBi Intermetallic with Disordered Amorphous Phase for Boosting Electrocatalytic Hydrogen Evolution and Alcohol Oxidation

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(25)

Published: April 16, 2024

Constructing amorphous/intermetallic (A/IMC) heterophase structures by breaking the highly ordered IMC phase with disordered amorphous is an effective way to improve electrocatalytic performance of noble metal-based electrocatalysts because optimized electronic structure and abundant boundaries as active sites. In this study, we report synthesis ultrathin A/IMC PtPbBi nanosheets (NSs) for boosting hydrogen evolution reaction (HER) alcohol oxidation reactions. The resulting NSs exhibit a remarkably low overpotential only 25 mV at 10 mA cm

Language: Английский

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Two-Dimensional Materials for Brain-Inspired Computing Hardware

Chemical Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Recent breakthroughs in brain-inspired computing promise to address a wide range of problems from security healthcare. However, the current strategy implementing artificial intelligence algorithms using conventional silicon hardware is leading unsustainable energy consumption. Neuromorphic based on electronic devices mimicking biological systems emerging as low-energy alternative, although further progress requires materials that can mimic function while maintaining scalability and speed. As result their diverse unique properties, atomically thin two-dimensional (2D) are promising building blocks for next-generation electronics including nonvolatile memory, in-memory neuromorphic computing, flexible edge-computing systems. Furthermore, 2D achieve biorealistic synaptic neuronal responses extend beyond logic memory Here, we provide comprehensive review growth, fabrication, integration van der Waals heterojunctions optoelectronic devices, circuits, For each case, relationship between physical properties device emphasized followed by critical comparison technologies different applications. We conclude with forward-looking perspective key remaining challenges opportunities applications leverage fundamental heterojunctions.

Language: Английский

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Synthesis of amorphous metal oxides via a crystalline to amorphous phase transition strategy

Nature Synthesis, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 3, 2025

Language: Английский

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Ultrafast micro/nano-manufacturing of metastable materials for energy

National Science Review, Journal Year: 2024, Volume and Issue: 11(4)

Published: Jan. 27, 2024

ABSTRACT The structural engineering of metastable nanomaterials with abundant defects has attracted much attention in energy-related fields. high-temperature shock (HTS) technique, as a rapidly developing and advanced synthesis strategy, offers significant potential for the rational design fabrication high-quality nanocatalysts an ultrafast, scalable, controllable eco-friendly way. In this review, we provide overview various micro- synthesized via HTS, including single metallic bimetallic nanostructures, high entropy alloys, metal compounds (e.g. oxides) carbon nanomaterials. Note that HTS provides new research dimension i.e. kinetic modulation. Furthermore, summarize application HTS—as supporting films transmission electron microscopy grids—in 2D materials, which is vital direct imaging materials. Finally, discuss future applications high-throughput liquid-phase strategies non-equilibrium micro/nano-manufacturing beyond It believed emerging field will bring opportunities to development nanoscience nanotechnology both fundamental practical aspects.

Language: Английский

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Understanding the Mechanisms and Applications of Luminescent Covalent Organic Frameworks (COFs) for Multi-Analyte Sensing

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1321, P. 139945 - 139945

Published: Sept. 7, 2024

Language: Английский

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Nanomaterials for Flexible Neuromorphics

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(22), P. 12738 - 12843

Published: Nov. 5, 2024

The quest to imbue machines with intelligence akin that of humans, through the development adaptable neuromorphic devices and creation artificial neural systems, has long stood as a pivotal goal in both scientific inquiry industrial advancement. Recent advancements flexible electronics primarily rely on nanomaterials polymers owing their inherent uniformity, superior mechanical electrical capabilities, versatile functionalities. However, this field is still its nascent stage, necessitating continuous efforts materials innovation device/system design. Therefore, it imperative conduct an extensive comprehensive analysis summarize current progress. This review highlights applications neuromorphics, involving inorganic (zero-/one-/two-dimensional, heterostructure), carbon-based such carbon nanotubes (CNTs) graphene, polymers. Additionally, comparison summary structural compositions, design strategies, key performance, significant these are provided. Furthermore, challenges future directions pertaining materials/devices/systems associated neuromorphics also addressed. aim shed light rapidly growing attract experts from diverse disciplines (e.g., electronics, science, neurobiology), foster further for accelerated development.

Language: Английский

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Phase-Engineered MoSe₂/CeO₂ Composites for Room-Temperature Gas Sensing with a Drastic Discrimination of NH₃ and TEA Gases

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(8), P. 3994 - 4006

Published: July 23, 2024

Detecting and distinguishing between hazardous gases with similar odors by using conventional sensor technology for safeguarding human health ensuring food safety are significant challenges. Bulky, costly, power-hungry devices, such as that used gas chromatography-mass spectrometry (GC-MS), widely employed sensing. Using a single chemiresistive semiconductor or electric nose (e-nose) to achieve this objective is difficult, mainly because of its selectivity issue. Thus, there need develop new materials tunable versatile sensing characteristics. Phase engineering two-dimensional better utilize their physiochemical properties has attracted considerable attention. Here, we show MoSe

Language: Английский

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A catalyst family of high-entropy alloy atomic layers with square atomic arrangements comprising iron- and platinum-group metals

Science Advances, Journal Year: 2024, Volume and Issue: 10(30)

Published: July 26, 2024

We report a catalyst family of high-entropy alloy (HEA) atomic layers having three elements from iron-group metals (IGMs) and two platinum-group (PGMs). Ten distinct quinary compositions IGM-PGM-HEA with precisely controlled square arrangements are used to explore their impact on hydrogen evolution reaction (HER) oxidation (HOR). The PtRuFeCoNi perform enhanced catalytic activity durability toward HER HOR when benchmarked against the other commercial Pt/C catalysts. Operando synchrotron x-ray absorption spectroscopy density functional theory simulations confirm cocktail effect arising multielement composition. This optimizes hydrogen-adsorption free energy contributes remarkable observed in PtRuFeCoNi. In situ electron microscopy captures phase transformation metastable during annealing process. They transform random mixing (25°C), ordered L1

Language: Английский

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