3D printed porous nickel-cobalt oxide objects synthesized by interconnection and thermal conversion of metal hydroxide acrylate nanoparticles
Source abstract
Abstract
We report a cross-linker-free 3D printing strategy for fabricating hierarchically porous nickel-cobalt oxide objects using highly concentrated dispersions of metal hydroxide acrylate nanoparticles.By employing an optimized photoinitiator, millimetre-scale CoNi-based printed structures were successfully printed without the need for crosslinking agents.Upon thermal treatment under inert atmosphere, the printed objects transformed into Co-Ni alloy/carbon nanocomposites via intermediate carbide phases.Subsequent oxidation removed carbon domains and produced porous metal oxide architectures with tuneable meso-to macroporosity, while preserving the original printed shapes.This solid-solid phase separation process enabled pore formation without sacrificial templates or collapse of structure.Our approach offers a streamlined route to functional ceramic frameworks, with potential applications in catalysis, energy storage, and separations.
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Research context
OpenAlex topics: Additive Manufacturing and 3D Printing Technologies · Pigment Synthesis and Properties · Nanomaterials and Printing Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Graduate School of Advanced Science and Engineering, Hiroshima University
Department of Materials Science, Graduate School of Engineering, Osaka Metropolitan University
Japan Synchrotron Radiation Research Institute
References (42)
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