Single-Atom to Ultrasmall Au Nanoparticles Anchored on NiFe Layered Double Hydroxide as Catalyst for Oxygen and Hydrogen Evolution Reactions DOI Creative Commons
Supak Pattaweepaiboon,

Panisara Samarungkasut,

Pawin Iamprasertkun

и другие.

ACS Applied Nano Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 20, 2024

Owing to the limited supply and high cost, rational design of precious metal-based catalysts is essential importance for boosting electrocatalytic activity. Herein, variation Au species from single-atoms ultrasmall nanoparticles (3–6 nm) deposited on NiFe-layered double hydroxide (NiFe-LDH) was investigated as a bifunctional electrocatalyst oxygen hydrogen evolution reactions. The brucite-like layered structure NiFe-LDH verified by X-ray diffraction. existence single-atom well local bonding environment were evaluated high-resolution transmission electron microscopy photoelectron spectroscopy. integration into single atoms metallic shows significant improvement in activity 1 M KOH. Single-atom Au/NiFe-LDH (2Au/NiFe-LDH, 0.21 wt % Au) delivers lowest overpotential 209 mV catalyze 10 mA cm–2 OER current density with Tafel slope 46.5 dec–1. On other hand, nanoparticles/NiFe-LDH (50Au/NiFe-LDH, 3.22 possesses an 150 at HER 134.5 For overall water splitting, under optimum conditions, 2Au/NiFe-LDH//50Au/NiFe-LDH couple requires cell potentials 1.62 1.78 V deliver 100 These findings provide insights effect decoration catalyst surface efficient performance production O2 H2 alkaline electrolyte.

Язык: Английский

Doping La into NiFe LDH/NiS heterostructure achieving high-current-density oxygen evolution for anion exchange membrane water electrolysis DOI
Qi Song,

Kangnan Li,

Zhenhua Cao

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 157526 - 157526

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

3
Lanthanides in the water electrolysis DOI Creative Commons
Ashish Gaur,

Jatin Sharma,

Enkhtuvshin Enkhbayar

и другие.

EcoMat, Год журнала: 2024, Номер unknown

Опубликована: Сен. 12, 2024

Abstract The most feasible technique for producing green hydrogen is water electrolysis. In recent years, there has been significant study conducted on the use of transition metal compounds as electrocatalysts both anodes and cathodes. Peoples have attempted several strategies to improve electrocatalytic activity their original structure. One such involves introducing rare earth metals or creating heterostructures with based metals. incorporation significantly enhances by many folds, while offer structural stability ability manipulate electronic properties system. These factors led a boom in investigations metal‐based electrocatalysts. There currently pressing demand review article that can provide comprehensive overview scientific advancements elucidate mechanistic aspects impact lanthanide doping. This begins explaining structure lanthanides. We next examine aspects, followed doping heterostructure formation electrolysis applications. It expected this particular effort will benefit broad audience stimulate more research area interest. image

Язык: Английский

Процитировано

4
Design and Modification of Layered Double Hydroxides‐Based Compounds in Electrocatalytic Water Splitting: a Review DOI Open Access
Mingyang Li, Dandan Ma,

Xiangbo Feng

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Abstract Layered double hydroxides (LDHs) exhibit great potential in electrocatalytic water splitting due to the unique 2D feature and an adjustable structure composed of different metal centers. In addition, LDHs have advantage being inherently inexpensive compared other catalysts good stability splitting. Up now, numerous methods been put forward improve activity splitting, a comprehensive introduction comb fabrication modification strategies is helpful for followers get clear vein carry out efficient manipulation development high promising catalysts. this review, basic principles electrolysis, evaluation indexes are introduced first, then properties commonly utilized introduced. After that, oxygen evolution reaction (OER), hydrogen (HER), overall (OWS) performance LDHs‐based analyze merits shortcomings compared. Based on this, advanced improving give brief prospect materials electrocatalysis.

Язык: Английский

Процитировано

0
The synergistic effect of Ni–NiMo4N5 heterointerface construction and Fe-doping enables active and durable alkaline water splitting at industrial current density DOI
Yaling Zhao, Jinsheng Li, Kai Li

и другие.

Journal of Materials Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The synergistic effect of heterogeneous interfaces and doping optimizes electronic structure accelerates charge transfer, significantly boosting alkaline water electrolysis performance.

Язык: Английский

Процитировано

0
Investigation of the effects metallic concentration and P-doping on newly designed P-doped CoMoOTe2 nanostructures as bifunctional electrocatalyst for hydrogen and oxygen evolution reactions DOI
Yuan Jian, P. Sakthivel, Mani Sakthivel

и другие.

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 122, С. 206 - 219

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Phosphotungstic Acid Intercalated MgAlLa Ternary Layered Double Hydroxides as High-Efficiency Additives for Epoxy Resin: Synergistic Enhancement of Flame Retardancy and Smoke Suppression DOI Open Access
Wensheng Zhao, Jiao Jin,

Zhaoxu Guang

и другие.

Coatings, Год журнала: 2025, Номер 15(5), С. 523 - 523

Опубликована: Апрель 27, 2025

The inherent flammability and toxic smoke emission of epoxy resins (EPs) pose significant challenges to their advanced engineering applications. To address this limitation, we developed a novel flame-retardant additive through the organic modification layered double hydroxides (LDHs) using ternary MgAlLa hydrotalcite structure intercalated with phosphotungstic acid (PWA). This innovative design established synergistic mechanism by combining catalytic carbonization effect lanthanum radical scavenging capability PWA. optimized MgAlLa-PWA/EP composite demonstrated remarkable flame retardancy suppression improvements, exhibiting 77.9% 62.4% reductions in peak heat release rate (pHRR) total (THR), respectively, compared pure EP. Particularly noteworthy was 72.6% decrease (TSR), accompanied elevation limiting oxygen index (LOI) value 26.8% achievement UL-94 V-0 rating. Microstructural analysis revealed that modified formed continuous uniform layer increased density during combustion, effectively inhibiting exchange, diffusion, transfer. study provides strategy for designing multi-element LDHs high-efficiency

Язык: Английский

Процитировано

0
Ternary NiFeCo-Glycerolate Catalysts: Rational Design for Improved Oxygen Evolution Reaction Efficiency DOI
Irlan S. Lima, Josué M. Gonçalves, Lúcio Angnes

и другие.

Journal of Materials Chemistry A, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

This work reports a ternary Ni 0.4 Fe 0.3 Co -glycerolate as an OER electrocatalyst using one-step solvothermal strategy. optimized composition achieved overpotential of 277 mV at current density 10 mA cm −2 in 1 M KOH.

Язык: Английский

Процитировано

2
Interfacial Effects of NiFe-Based Bifunctional Electrocatalysts for Highly Efficient Overall Water Splitting DOI
Ruibin Guo, Zhifeng Zhao, Zhanhua Su

и другие.

Langmuir, Год журнала: 2024, Номер 40(49), С. 26339 - 26349

Опубликована: Ноя. 22, 2024

The reasonable design of highly efficient NiFe-based bifunctional electrocatalysts is imperative for water splitting and alleviation the energy crisis. Herein, are designed grown in situ on Ni foam by a simple hydrothermal method. interfacial effect among NiFe-LDH, Fe

Язык: Английский

Процитировано

1
Single-Atom to Ultrasmall Au Nanoparticles Anchored on NiFe Layered Double Hydroxide as Catalyst for Oxygen and Hydrogen Evolution Reactions DOI Creative Commons
Supak Pattaweepaiboon,

Panisara Samarungkasut,

Pawin Iamprasertkun

и другие.

ACS Applied Nano Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 20, 2024

Owing to the limited supply and high cost, rational design of precious metal-based catalysts is essential importance for boosting electrocatalytic activity. Herein, variation Au species from single-atoms ultrasmall nanoparticles (3–6 nm) deposited on NiFe-layered double hydroxide (NiFe-LDH) was investigated as a bifunctional electrocatalyst oxygen hydrogen evolution reactions. The brucite-like layered structure NiFe-LDH verified by X-ray diffraction. existence single-atom well local bonding environment were evaluated high-resolution transmission electron microscopy photoelectron spectroscopy. integration into single atoms metallic shows significant improvement in activity 1 M KOH. Single-atom Au/NiFe-LDH (2Au/NiFe-LDH, 0.21 wt % Au) delivers lowest overpotential 209 mV catalyze 10 mA cm–2 OER current density with Tafel slope 46.5 dec–1. On other hand, nanoparticles/NiFe-LDH (50Au/NiFe-LDH, 3.22 possesses an 150 at HER 134.5 For overall water splitting, under optimum conditions, 2Au/NiFe-LDH//50Au/NiFe-LDH couple requires cell potentials 1.62 1.78 V deliver 100 These findings provide insights effect decoration catalyst surface efficient performance production O2 H2 alkaline electrolyte.

Язык: Английский

Процитировано

0