Efficient, scalable, closed-loop synthesis of highly crystalline pure phase MgAl-layered double hydroxides intercalated with hydroxyl anions

Min, Luofu; Duan, Jingying; Liu, Lu; Ge, Shen; Zhang, Wen; Wang, Yuxin

doi:10.1039/d1dt03849d

Cited by 5 publications

(4 citation statements)

References 54 publications

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“…The washed and dried MNF-LDH powder exhibited a light brown color (Figure S4, Supporting Information). NiFe-LDH from traditional solvothermal methods, [19,20] termed NF-LDH-sol, was also synthesized as control and appeared in light yellow (Figure S4, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Mesoporous LDH Metastructure from Multiscale Assembly of Defective Nanodomains by Laser Shock for Oxygen Evolution Reaction

Jiang

Cheng

2022

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Laser is a powerful tool for the synthesis of nanomaterials. The intensive laser pulses delivered to materials within nanoseconds allow the formation of novel structures that are inaccessible for conventional methods. Layered double hydroxide (LDH) nanostructures with high porosity, suitable dopants, and rich defects are desirable for catalysts, however, tremendously difficult in a one‐pot synthesis. Here it is found that confined laser shock in solvent leads to the formation of nanoreactors which guide the assembly of multiscale LDH building units, larger nanosheets as frame and smaller nanodomains as building blocks. These nanodomains have rich vacancy defects and are interlocked in a high packed density of 1013 cm−2, leaving rich mesopores across the nanosheets and coral‐like morphology. Like the natural coral reef that has multiscale structure to accommodate different marine organisms, the coral‐like LDH metastructure provides large surface area and rich active sites for the interaction with guest molecules. Benefiting from the multiscale porous structure and rational dopant, this LDH catalyst exhibits a low overpotential of 220 mV at 10 mA cm−2 for oxygen evolution reaction (OER), standing as one of the best LDH catalysts to date.

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Section: Resultsmentioning

confidence: 99%

Mesoporous LDH Metastructure from Multiscale Assembly of Defective Nanodomains by Laser Shock for Oxygen Evolution Reaction

Jiang

Cheng

2022

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Section: Introductionmentioning

confidence: 99%

“…Because of their unique and tunable properties, LDHs draw continuing attention from both academia and industry. Their application is widespread, ranging from environmental remediation 1 and catalysis 2,3 to drug delivery, 4 CO 2 capture, [5][6][7][8][9] and energy storage. 10 Robustly crystalline and uniform-sized LDHs with specific anions are commonly desirable for both research and practical use but cannot be obtained easily.…”

Section: Introductionmentioning

confidence: 99%

Decarbonating layered double hydroxides using a carbonated salt solution

et al. 2023

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“…[19] The LDH support was synthesized using a typical precipitation method. [20,21] The LCSD system employed a pulsed laser beam as an energy source for delivering photons and heat during the reaction process [22] (Figure 1a). The platinum source, PtCl 4 salt, was uniformly and firmly attached to the LDH through electrostatic attraction and hydrogen bonding, forming a solid precursor for LCSD (Figure 1b).…”

Section: Introductionmentioning

confidence: 99%

Unveiling the Synergistic Potential of Laser Chemical Solid‐Phase Deposition of Atomic Platinum‐Metal Layer on 2D Materials for Bifunctional Catalysts

Yi,

Yu,

Jiang

et al. 2023

Adv Funct Materials

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The formation of high‐density atomic metal layers on 2D materials enhances catalytic device development by providing a large surface area, precise control over active sites, and enhanced reactivity. Here, pulsed laser‐induced chemical solid‐phase deposition (LCSD) is introduced for achieving high‐density atomic metal layers. By leveraging high‐density plasma generated via pulsed nanosecond laser irradiation of thin salt layers on 2D materials, atomic‐scale metals are deposited onto abundant nucleation sites, creating dense atomic‐metal layers. This study engineers layered double hydroxide (LDH) materials layered with atomic platinum‐based alloys, exhibiting exceptional catalytic activity for overall water splitting. LDH's excellent oxygen evolution performance combined with remarkable advances in hydrogen evolution catalysis are achieved. Introducing a second element improves Pt layer dispersion and uniformity, resulting in extraordinary Pt distribution density and minimal overpotential. The LDH and Pt‐metal combination creates powerful synergistic effects, significantly enhancing catalytic performance and enabling superior bifunctional catalysts for water splitting. LCSD effectively fabricates stable nanocomposites designed for electrocatalytic applications, leveraging unique structures of atom‐scale metal‐supported composite 2D materials, enhancing overall electrocatalytic performance. This breakthrough impacts energy conversion and environmental protection, broadening electrocatalysis and revolutionizing atom‐scale metal‐supported composite 2D materials. Its practical applications span various areas, contributing to sustainable energy solutions and environmental preservation.

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Efficient, scalable, closed-loop synthesis of highly crystalline pure phase MgAl-layered double hydroxides intercalated with hydroxyl anions

Abstract: Layered double hydroxides (LDH) can play an important part in a variety of areas. But conventional LDH synthesis often causes product agglomeration and plenty of high-salt wastewater, and need a...

Cited by 5 publications

References 54 publications

Mesoporous LDH Metastructure from Multiscale Assembly of Defective Nanodomains by Laser Shock for Oxygen Evolution Reaction

Mesoporous LDH Metastructure from Multiscale Assembly of Defective Nanodomains by Laser Shock for Oxygen Evolution Reaction

Decarbonating layered double hydroxides using a carbonated salt solution

Unveiling the Synergistic Potential of Laser Chemical Solid‐Phase Deposition of Atomic Platinum‐Metal Layer on 2D Materials for Bifunctional Catalysts

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