The development of two-dimensional (2D) high-performance electrode materials is the key to new advances in fields energy conversion and storage. MXenes, a intriguing family 2D transition metal carbides, nitrides, carbonitrides, have recently received considerable attention due their unique combination properties such as high electrical conductivity, hydrophilic nature, excellent thermal stability, large interlayer spacing, easily tunable structure, surface area. In this review, we discuss...

A simple and efficient approach has been developed for synthesis of carbon-supported Pt nanoparticles (NPs) that combines homogeneous deposition (HD) complex species through a gradual increase pH realized by in situ hydrolysis urea subsequent uniform reduction ethylene glycol (EG) polyol process, giving control over the size dispersion NPs. With increasing amount starting salt aqueous solution, decreases so does metallic The decrease is likely attributable to two determining factors: steric...

TMD-decorated MXene hybrids have emerged as alternatives for energy storage and conversion applications. Herein, recent progress, role of the unique junctions TMD–MXene their challenges further improvement has been reviewed.

This review highlights recent advances in high entropy metal sulfides and phosphides (HEMSs/Ps), their classification, synthesis approaches, crystal structures morphologies, applications electrochemical water splitting.

Hardware neural networks with mechanical flexibility are promising next-generation computing systems for smart wearable electronics. Overcoming the challenge of developing a fully synaptic plastic network, we demonstrate low-operating-voltage PET/ITO/p-MXene/Ag flexible memristor device by controlling etching aluminum metal ions in Ti3C2Tx MXene. The presence small fraction Al partially etched MXene (p-Ti3C2Tx) significantly suppresses operating voltage to 1 V compared 7 from...

Abstract Human urine, otherwise potentially polluting waste, is an universal unused resource in organic form disposed by the human body. We present for first time “proof of concept” a convenient, perhaps economically beneficial and innovative template-free route to synthesize highly porous carbon containing heteroatoms such as N, S, Si P from urine waste single precursor multiple heteroatoms. High porosity created through removal inherently-present salt particles as-prepared “Urine Carbon”...

Abstract Water electrolysis is an important energy conversion technology used to produce hydrogen on a mass scale. Until now, special emphasis has been placed development for water in acidic electrolytes, owing the more facilitated production under conditions compared alkaline electrolysis. Among various catalyst design concepts, bifunctional catalysts capable of driving low overpotentials evolution reaction (HER) and oxygen (OER) are particularly interesting, simplicity cell system...

Abstract Designing high‐performance, precious‐metal‐based, and economic electrocatalysts remains an important challenge in proton exchange membrane (PEM) electrolyzers. Here, a highly active durable bifunctional electrocatalyst for PEM electrolyzers based on rattle‐like catalyst comprising Ni/Ru‐doped Pt core Pt/Ni‐doped RuO 2 frame shell, which is topotactically transformed from icosahedral Pt/Ni/Ru nanocrystal, reported. The ‐based shell with its reactive surfaces leads to very high...

Abstract Well‐dispersed cube‐like iron oxide (α‐Fe 2 O 3 ) nanoparticles (NPs) supported on ordered multimodal porous carbon (OMPC) are synthesized for the first time by a facile and efficient glycine‐assisted hydrothermal route. The effect of OPMC support growth formation mechanism Fe NPs is discussed. OMPC as supporting material plays pivotal role controlling shape, size, dispersion NPs. As‐synthesized α‐Fe /OMPC composites reveal significant improvement in performance electrode...

This review provides a comprehensive overview of the research trends in synthesized and predicted non-Ti MXenes. The synthetic methods, unique properties, applications, advantages MXenes compared to Ti-based are discussed.

Hierarchical nanostructured carbon with a hollow macroporous core of ca. 60 nm in diameter combination mesoporous shell 30 thickness has been explored as counter electrode metal-free organic dye-sensitized solar cell. Compared other porous counterparts such activated and ordered CMK-3 Pt electrode, the superior structural characteristics including large specific surface area volume particularly unique hierarchical core/shell nanostructure along 3D interconnected interstitial guarantee fast...

Uniform β-FeOOH (akaganeite) nanorods with different sizes featuring highly ordered channel-type nanoporous structures were synthesized by simple reproducible one-step hydrothermal method without surfactant and size selection processes. Systematic control of the aspect ratio mean was achieved regulating concentration hydrochloric acid. The length diameter these rods could be varied from 270 to 650 nm 32 21 nm, respectively. It is seen that strongly depends upon chloride ion also other added...

Enzyme mimics have garnered considerable attention as they can overcome some serious disadvantages associated with the natural enzymes. In recently developed sphere and rod shaped iron oxide peroxidase mimic nanoparticles, influence of physical parameters such shape, size surface area on catalytic performance was not clearly demonstrated. order to better understand enzyme activity present study initiated using three different hematiteα-Fe2O3 nanostructures, particularly hexagonal prism,...

The involvement of CO2 as a renewable and abundant feedstock toward carbon balanced future has led to production several value-added products. primary focus in the current effort is assess fixation epoxides into cyclic carbonates by employing state-of-the-art metal complexes promising catalytic systems. Our attention restricted Earth-abundant metals such aluminum, cobalt, iron, zinc few transition association with different ligand skeletons used for structural construction respective...

Abstract Obtaining functionalized carbonaceous materials, with well-developed pores and doped heteroatoms, from waste precursors using environmentally friendly processes has always been of great interest. Herein, a simple template-free approach is devised to obtain porous heteroatom-doped carbon, by the most abundant human waste, “urine”. Removal inherent mineral salts urine carbon (URC) makes it possess large quantity pores. Synergetic effect heteroatom doping surface properties URC...

This review addresses recent developments in Pt–Cu based catalysts toward various energy conversion electrocatalytic applications such as the HER, ORR, MOR, EGOR and FAOR.

This review provides a comprehensive overview of the synthesis, properties, applications, current challenges, and prospects non-carbide MXenes, viz. , carbonitride nitride MXenes.