Efficient Electrocatalysts for OER: Amorphous Cerium-Doped Cobalt Sulfide with Enhanced Performance and Durability

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: unknown, P. 105108 - 105108

Published: Sept. 1, 2024

Language: Английский

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Synthesis of highly efficient bifunctional Nd2S3-MoSe2 heterostructure electrocatalyst for overall water-splitting

Fuel, Journal Year: 2025, Volume and Issue: 390, P. 134595 - 134595

Published: Feb. 16, 2025

Language: Английский

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Radial Dielectric Gradient Core–Shell Ce/NiCo@C Composites for Simultaneous Electromagnetic Wave Absorption and Antibacterial Activity via Ce³⁺/Ce⁴⁺ Valence Modulation

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Abstract The increasing demand for multifunctional materials that combine electromagnetic wave (EMW) absorption and antibacterial properties has driven the development of novel capable meeting these challenges. Here, a core–shell Ce/NiCo@C composite with radial dielectric gradient structure is presented, designed to enhance EMW exhibit potent activity. material's unique architecture, which includes multilayered configuration distribution Ce 3+ /Ce 4+ valence states, modulates constant promotes electron migration polarization under exposure. This design results in broad effective bandwidth 7.12 GHz, minimum reflection loss (RL min ) −67.2 dB at thickness 1.94 mm. Additionally, reversible transition between generates reactive oxygen species (ROS), disrupt microbial cell membranes inhibit bacterial growth. demonstrates sterilization rate exceeding 99% against E. coli significant bactericidal effect S. aureus . work highlights potential integrating valence‐modulated, advanced antimicrobial applications, offering promising approach future diverse technological fields.

Language: Английский

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Cerium Doping‐Induced Enrichment of Ni₃S₄ Phase for Boosting Oxygen Evolution Reaction

ChemSusChem, Journal Year: 2024, Volume and Issue: 17(16)

Published: March 25, 2024

Abstract The development of low‐cost transition metal compounds with high‐performance for efficient oxygen evolution reaction (OER) is great significance in promoting the electrocatalysis. In this study, a Ce‐doped Ni 3 S 4 catalyst (Ce 0.2 −Ni ) was synthesized through one‐step solvothermal method, where doped rare earth element Ce induced transformation NiS to . exhibited excellent OER performance 1 M KOH. At current density 10 mA cm −2 , it showed low overpotential 230 mV and Tafel slope 52.39 dec −1 Long‐term tests at same potential lasted 24 h without significant loss density. This work introduces novel method doping modifying sulfides, providing new insights into effective utilization elements field electrochemistry. It creates more chances progress highly catalysts OER, contributing advancement

Language: Английский

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Mesoporous RE_0.5Ce_0.5O_2–x Fluorite Electrocatalysts for the Oxygen Evolution Reaction

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(6), P. 7014 - 7025

Published: Feb. 3, 2024

Developing highly active and stable electrocatalysts for the oxygen evolution reaction (OER) is key to improving efficiency practical application of various sustainable energy technologies including water electrolysis, CO2 reduction, metal air batteries. Here, we use evaporation-induced self-assembly (EISA) synthesize porous fluorite nanocatalysts with a high surface area. In this study, demonstrate that 50% rare-earth cation substitution Ce in CeO2 lattice improves OER activity stability by introducing vacancies into host lattice, which results decrease adsorption OH* intermediate OER. Among binary compositions investigated, Nd2Ce2O7 shown display lowest overpotential 243 mV, achieved at current density 10 mA cm–2, excellent cycling an alkaline medium. Importantly, oxide can be using EISA synthesis route without incorporation transition noble metals.

Language: Английский

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CeO2-based functional materials: Advancing photo and electro-driven catalysis for environmental remediation and energy conversion

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 527, P. 216395 - 216395

Published: Dec. 13, 2024

Language: Английский

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Green and sustainable in situ water treatment: a review of noble-free catalysts for electrochemical oxygen reduction to hydrogen peroxide

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(15), P. 8445 - 8460

Published: Jan. 1, 2024

Water treatment is an essential process for ensuring access to clean and safe drinking water.

Language: Английский

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Rich oxygen vacancy and amorphous/crystalline ruthenium-doped CoCu -layered double hydroxide electrocatalysts for enhanced oxygen evolution reactions

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 671, P. 283 - 293

Published: May 23, 2024

Language: Английский

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Synergetic Modulation of Electronic Properties of Cobalt Oxide via “Tb” Single Atom for Uphill Urea and Water Electrolysis

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 11, 2024

Exploring single-atom (SA) catalysts in hybrid urea-assisted water electrolysis offers a viable alternative to both Hydrogen (H

Language: Английский

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Comparative investigations of electronic, mechanical and optical responses of Ra-doping in Barium Titanate for optoelectronic applications: A computational insight

Heliyon, Journal Year: 2024, Volume and Issue: 10(2), P. e24607 - e24607

Published: Jan. 1, 2024

This unique study examined the theoretical pure BaTiO3 and doped Ra (Ba1-xRaxTiO3) impact on electronic, mechanical optical responses were using Heydscuseria-Ernzerhof screened hybrid functional (HSE06) generalized gradient approximation (GGA-PBE) with norm-converging pseudopotential approaches in density theory. Computed lattice constant bond lengths for (BaTiO3) atoms as well explored changes of consequences responses. The calculated values indicate is an indirect characteristic optically inactive nature. low energy state also conduction band crystal structure to transform direction narrows electronic gap. bandgap continually reduced which shifts Fermi level Eg. When increasing doping impurities (x) (Ra) BaTiO3, gap from (X-G) direct (X-X) nature become active. elastic are essential suitable material ensuring structural integrity predicting a ductile behavior. Kleinman coefficient (ξ), it clear that (Ra)-doped materials shows slightly large resistance bending angle distortion compare BaTiO3. Optical characteristics both core spectra thoroughly investigated. coefficients obtained scale start 0 20 eV. Moreover, results properties show excellent influence so this can be employed UV filter region optoelectronics devices.

Language: Английский

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