Green synthesis of heterolayered 2D nanohybrid catalytic hydrogel cell for environmentally-friendly water splitting

Noh, Seonmyeong; Le, Thanh-Hai; Kim, Changjun; Ju, Minseong; Lee, Haney; Nataraj, S. K.; Yoon, Hyeonseok

doi:10.1039/d3ta06580d

J. Mater. Chem. A

2024

DOI: 10.1039/d3ta06580d

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Green synthesis of heterolayered 2D nanohybrid catalytic hydrogel cell for environmentally-friendly water splitting

Seonmyeong Noh,

Thanh-Hai Le,

Changjun Kim

et al.

Abstract: A simple and environmentally friendly liquid-phase co-exfoliation strategy is proposed to create heterolayered 2D nanohybrids with excellent electrocatalytic performance for hydrogen and oxygen production when integrated into a hydrogel cell.

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Novel Gas-Driven Milli-Channel Shear Device: Numerical Simulation and Experimental Exfoliation of 2D Materials

Liu,

Zhang,

Chen

et al. 2024

Ind. Eng. Chem. Res.

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Two-dimensional (2D) materials have exhibited great potential for various applications due to their remarkable properties. Fluid dynamics-assisted liquid-phase exfoliation is a promising strategy for the scalable production of 2D materials at a low cost. However, the production rate is significantly constrained due to the confinement of the high-shear zone to specific local regions in traditional fluid dynamics devices. To this end, we designed a novel gas-driven milli-channel shear device (GMSD). In this work, shear characteristics of the GMSD were studied using computational fluid dynamics numerical simulation and verified by high-speed imaging. The exfoliation capability of 2D materials with the GMSD was investigated through experimental production of graphene and MoS2. The results indicated that high shear can be achieved uniformly across the entire GMSD. The average wall shear stress and internal shear rate of the milli-channel reached 650.2 Pa and 1.94 × 105 s–1, respectively. The shear stress for 95% of the particles significantly exceeded the minimum shear stress threshold of 146 Pa. A higher gas–liquid velocity ratio (k) enhances exfoliation efficiency, and a sharp outlet demonstrates greater favorability for the exfoliation. The GMSD, with its simple structure, presents an efficient alternative for the scalable production of 2D materials.

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Novel Gas-Driven Milli-Channel Shear Device: Numerical Simulation and Experimental Exfoliation of 2D Materials

Liu,

Zhang,

Chen

et al. 2024

Ind. Eng. Chem. Res.

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One-step synthesized iron foam-based NiFe₂O₄ applied for self-powered water splitting hydrogen production

Jian,

Zhang,

Wang

et al. 2025

J. Mater. Chem. A

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Green synthesis of heterolayered 2D nanohybrid catalytic hydrogel cell for environmentally-friendly water splitting

Abstract: A simple and environmentally friendly liquid-phase co-exfoliation strategy is proposed to create heterolayered 2D nanohybrids with excellent electrocatalytic performance for hydrogen and oxygen production when integrated into a hydrogel cell.

Cited by 2 publications

References 74 publications

Novel Gas-Driven Milli-Channel Shear Device: Numerical Simulation and Experimental Exfoliation of 2D Materials

Novel Gas-Driven Milli-Channel Shear Device: Numerical Simulation and Experimental Exfoliation of 2D Materials

One-step synthesized iron foam-based NiFe₂O₄ applied for self-powered water splitting hydrogen production

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Green synthesis of heterolayered 2D nanohybrid catalytic hydrogel cell for environmentally-friendly water splitting

Abstract: A simple and environmentally friendly liquid-phase co-exfoliation strategy is proposed to create heterolayered 2D nanohybrids with excellent electrocatalytic performance for hydrogen and oxygen production when integrated into a hydrogel cell.

Cited by 2 publications

References 74 publications

Novel Gas-Driven Milli-Channel Shear Device: Numerical Simulation and Experimental Exfoliation of 2D Materials

Novel Gas-Driven Milli-Channel Shear Device: Numerical Simulation and Experimental Exfoliation of 2D Materials

One-step synthesized iron foam-based NiFe2O4 applied for self-powered water splitting hydrogen production

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One-step synthesized iron foam-based NiFe₂O₄ applied for self-powered water splitting hydrogen production