Energy & Fuels, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 29, 2024
Language: Английский
Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(23), P. 8319 - 8373
Published: Jan. 1, 2023
In this review, we provide a comprehensive summary of recent advances in the synthesis strategies, design principles, and characterization technologies high entropy alloys, their applications various electrocatalytic conversion reactions.
Language: Английский
Citations
161
Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 189, P. 211 - 246
Published: Jan. 5, 2024
Language: Английский
Citations
71
SusMat, Journal Year: 2024, Volume and Issue: unknown
Published: June 9, 2024
Abstract Precisely tuning bicomponent intimacy during reactions by traditional methods remains a formidable challenge in the fabrication of highly active and stable catalysts because difficulty constructing well‐defined catalytic systems occurrence agglomeration assembly. To overcome these limitations, PtRuPNiO@TiO x catalyst on Ti plate was prepared ultrasound‐assisted low‐voltage plasma electrolysis. This method involves oxidation pure metal co‐reduction strong metals at 3000°C, followed sonochemical ultrasonication under ambient conditions an aqueous solution. The bimetals is tuned, nanoparticles are uniformly distributed porous titania coating via metal‒support interactions leveraging instantaneous high‐energy input from discharge ultrasonic irradiation. increases electron density Pt surface. Consequently, paired sites exhibit high hydrogen evolution reaction activity (an overpotential 220 mV current 10 mA cm −2 Tafel slope 186 dec −1 ), excellent hydrogenation 4‐nitrophenol with robust stability for up to 20 cycles, ability contrast stated without study facilitates industrially important through synergistic chemical interactions.
Language: Английский
Citations
15
Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 98, P. 262 - 273
Published: June 28, 2024
Language: Английский
Citations
14
AppliedChem, Journal Year: 2024, Volume and Issue: 4(1), P. 86 - 106
Published: March 13, 2024
Nickel nanoparticles have wide-ranging applications in diverse fields, including electronics, catalysis, and biomedicine. The unique properties of these depend on their physical chemical attributes. Consequently, there is a growing interest understanding the performance relationships through nuanced comprehension controlled synthesis. This review explores advancements related to precisely defined nickel nanoparticles, with specific focus unraveling connections between physical/chemical characteristics. emphasis elucidating how manipulating synthetic parameters, such as precursor concentration, reductant agent properties, temperature, time, presence stabilizing agents, can provide additional avenues for refining terms size morphology. Through analysis each variable, we illustrate methodology synthesizing well-controlled showcasing ability exert precision over composition, size, surface
Language: Английский
Citations
11
InfoMat, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 9, 2024
Abstract Metal oxide‐supported multielement alloy nanoparticles are very promising as highly efficient and cost‐effective catalysts with a virtually unlimited compositional space. However, controllable synthesis of ultrasmall (us‐MEA‐NPs) supported on porous metal oxides homogeneous elemental distribution good catalytic stability during long‐term operation is extremely challenging due to their oxidation strong immiscibility. As proof concept that such can be realized, this work presents general “bottom‐up” l ultrasonic‐assisted, simultaneous electro‐oxidation–reduction‐precipitation strategy for alloying dissimilar elements into single NPs support. One characteristic technique uniform mixing, which results from rapid thermal decomposition reduction leads liquid droplet solidification without aggregation. This process was achieved through synergistic combination enhanced electrochemical plasma‐chemical phenomena at the metal–electrolyte interface (electron energy 0.3–1.38 eV peak temperature 3000 K reached within seconds rate ~105 per second) in an aqueous solution under ultrasonic field (40 kHz). Illustrating effectiveness approach, CuAgNiFeCoRuMn@MgO‐P3000 catalyst exhibited exceptional efficiency selective hydrogenation nitro compounds, over 99% chemoselectivity nearly 100% conversion 60 s no decrease activity even after 40 cycles (>98% 120 s). Our provide effective, transferable method rationally designing MEA‐NP atomic level pave way wide variety reactions. image
Language: Английский
Citations
10
Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 99, P. 93 - 99
Published: July 17, 2024
Language: Английский
Citations
9
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 30, 2024
Abstract Nanoparticles (NPs) of high entropy materials (HEMs) have attracted significant attention due to their versatility and wide range applications. HEM NPs can be synthesized by fragmenting bulk HEMs or disintegrating recrystallizing them. Alternatively, directly producing in NP form from atomic/ionic/molecular precursors presents a challenge. A widely adopted strategy involves thermodynamically driving formation leveraging the entropic contribution but incorporating strategies limit growth at elevated temperatures used for maximizing entropy. second approach is kinetically drive promoting rapid reactions homogeneous reactant mixtures using highly diluted precursor dissolutions. Additionally, experimental evidence suggests that enthalpy plays role processes moderate temperatures, with energy cost generating additional surfaces interfaces nanoscale stabilizing phase. This review critically assesses various synthesis developed preparation, highlighting key illustrative examples offering insights into underlying mechanisms. Such are critical fine‐tuning conditions achieve specific outcomes, ultimately enabling effective optimized generations these advanced both current emerging applications across scientific technological fields.
Language: Английский
Citations
9
Results in Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 102124 - 102124
Published: Feb. 1, 2025
Language: Английский
Citations
1
InfoMat, Journal Year: 2025, Volume and Issue: unknown
Published: March 20, 2025
Abstract High‐entropy alloys (HEAs), which are near‐equimolar of four or more metal elements, have long been used to achieve the desired properties catalytic materials. However, a novel alloying approach that includes multiple principal elements at high concentrations generate HEAs as materials has reported. The fabrication well‐defined ultrastable supported HEAs, provide superior performance and stability catalysts owing their augmented entropy lower Gibbs free energy, remains critical challenge. Supported HEA sophisticated because variety morphologies large sizes nanoscale. To address these challenges, PtPdInGaP@TiO 2 , comprising five different metals, is prepared via ultrasonic‐assisted coincident electro‐oxidation–reduction precipitation (U‐SEO‐P). electronic structure nanoparticles (NPs) studied using hard scanning transmission electron microscopy (STEM), first direct observation NPs. This research takes an important step forward in fully describing individual Combining STEM with deep learning convolutional neural network (CNN) selected NPs reveals significant aspects shape size for widespread commercially proposed method facilitates detection segmentation NPs, potential development high‐performance reduction organic compounds. image
Language: Английский
Citations
1