High-entropy-based nano-materials for sustainable environmental applications

Das, Shubhasikha; Chowdhury, Shamik; Tiwary, Chandra Sekhar

doi:10.1039/d4nr00474d

Cited by 2 publications

(2 citation statements)

References 139 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This covers not only performance and cost considerations, but the environmental impact, which is key to ensuring a sustainable future [1]. In response to this challenge, the exploration of high-entropy oxides with their inherent complexity and ability to tune properties represents a new strategy in advanced materials development [2,3]. Since their initial discovery by Rost et al in 2015 [4], high-entropy oxides exploration has experienced notable expansion, particularly following the discovery of multicomponent rare-earth oxides (ME-REOx) [5].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Catalytic Performance of High-Entropy Rare-Earth Perovskite Nanofibers: (Y0.2La0.2Nd0.2Gd0.2Sm0.2)CoO3 in Low-Temperature Carbon Monoxide Oxidation

Krawczyk,

Wyrwa,

Kubiak

2024

Materials

View full text Add to dashboard Cite

This study investigated the catalytic properties of low-temperature oxidation of carbon monoxide, focusing on (Y0.2La0.2Nd0.2Gd0.2Sm0.2)CoO3 synthesized via a glycothermal method using 1,4-butanediol and diethylene glycol at 250 °C. This synthesis route bypasses the energy-intensive sintering process at 1200 °C while maintaining a high-entropy single-phase structure. The synthesized material was characterized structurally and chemically by X-ray diffraction and SEM/EDX analyses. The material was shown to form nanofibers of (Y0.2La0.2Nd0.2Gd0.2Sm0.2)CoO3, thereby increasing the active surface area for catalytic reactions, and crystallize in the model Pbnm space group of distorted perovskite cell. Using a custom setup to investigate catalytic properties of (Y0.2La0.2Nd0.2Gd0.2Sm0.2)CoO3, the CO oxidation behavior of those high-entropy perovskite oxide was investigated, showing an overall conversion of 78% at 50 °C and 97% at 100 °C. These findings highlight the effective catalytic activity of nanofibers of (Y0.2La0.2Nd0.2Gd0.2Sm0.2)CoO3 under mild conditions and their versatility in various catalytic processes of robust CO neutralization. The incorporation of rare-earth elements into a high-entropy structure could impart unique catalytic properties, promoting a synergistic effect that enhances performance.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and Catalytic Performance of High-Entropy Rare-Earth Perovskite Nanofibers: (Y0.2La0.2Nd0.2Gd0.2Sm0.2)CoO3 in Low-Temperature Carbon Monoxide Oxidation

Krawczyk,

Wyrwa,

Kubiak

2024

Materials

View full text Add to dashboard Cite

show abstract

“…High-entropy materials (HEMs) composed of multiple elements have become an interesting class of structural materials, among which HEMs include oxides, sulfides, selenides, and alloys, etc., which have recently attracted attention from the scientific community. − These materials exhibit a wide range of physical and chemical characteristics, such as adjustable electronic properties and photochemical stability, making them a fascinating subject for research. − Additionally, the integration of multiple elements in HEMs enhances configurational entropy, leading to what is referred to as the cocktail effect, which imparts functional properties not found in conventional single-element materials. , At the same time, element mixing caused by the high entropy effect has the potential to modify the electronic structure of the material. This regulation can optimize the electron transfer efficiency of the catalyst and improve the catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional High-Entropy Selenides for Boosting Visible-Light-Driven Photocatalytic Performance

Wang,

Zhang

et al. 2024

ACS Nano

View full text Add to dashboard Cite

High-entropy materials (HEMs) have garnered extensive attention owing to their diverse and captivating physicochemical properties. Yet, fine-tuning morphological properties of HEMs remains a formidable challenge, constraining their potential applications. To address this, we present a rapid, low-energy consumption diethylenetriamine (DETA)-assisted microwave hydrothermal method for synthesizing a series of two-dimensional high-entropy selenides (HESes). Subsequently, the obtained HESes are harnessed for photocatalytic w a t e r s p l i t t i n g . N o t e w o r t h y i s t h e o p t i m i z e d H E S e s , Cd 0.9 Zn 1.2 Mn 0.4 Cu 1.8 Cr 1.2 Se 4.5 , showcasing an output rate of hydrogen of 16.08 mmol h −1 g −1 and a quantum efficiency of ca. 30% under 420 nm monochromatic LED irradiation. It is revealed that the photocatalytic performance of these HESes stems not only from the enlarged specific surface area and enhanced photogenerated charge carrier utilization efficiency but also from the promoted formation of the Cd−H ads bond, influenced by multiple principal elements on the Cd. These findings provide a guide for the design of HEMs tailored for various applications.

show abstract

High-entropy-based nano-materials for sustainable environmental applications

Abstract: High entropy materials (HEMs), epitomized by high entropy alloys (HEAs), have sparked immense interest for a range of clean energy and environmental applications due to their remarkable structural versatility and...

Cited by 2 publications

References 139 publications

Synthesis and Catalytic Performance of High-Entropy Rare-Earth Perovskite Nanofibers: (Y0.2La0.2Nd0.2Gd0.2Sm0.2)CoO3 in Low-Temperature Carbon Monoxide Oxidation

Synthesis and Catalytic Performance of High-Entropy Rare-Earth Perovskite Nanofibers: (Y0.2La0.2Nd0.2Gd0.2Sm0.2)CoO3 in Low-Temperature Carbon Monoxide Oxidation

Two-Dimensional High-Entropy Selenides for Boosting Visible-Light-Driven Photocatalytic Performance

Contact Info

Product

Resources

About