Preparation and optical properties of one-dimensional magnetically oriented halloysite@Fe3O4 nanomaterials
Source abstract
Abstract
Clay minerals with composite magnetic particles offer potential as magnetically oriented nanomaterials for application in inorganic liquid crystals. However, the instability of magnetically oriented clay@Fe 3O 4 materials, caused by the easy detachment of Fe 3O 4 particles from the clay minerals surfaces and the corrosivity of the HCl dispersant on Fe 3O 4 particles, has limited their development. In this work, hollow tubular halloysite (Hal) was used as the carrier for Fe 3O 4 particles to obtain halloysite@Fe 3O 4 (Hal@Fe 3O 4), in which Fe 3O 4 particles were uniformly coated on the outer surface of Hal and located in the Hal tubular lumen. In addition, LiCl was employed as a dispersant instead of HCl in Hal@Fe 3O 4 dispersions. They collaboratively enhanced the stability of magnetically oriented Hal@Fe 3O 4 nanomaterials compared to magnetically oriented palygorskite@Fe 3O 4 nanomaterials. The stable one-dimensional magnetically oriented Hal@Fe 3O 4 nanomaterials demonstrated liquid crystal properties that were adjustable by a magnetic field, and photonic crystal properties. As a result, these functional materials could be used in many fields, such as inorganic liquid crystals, photonic crystals, and photonic switches.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Clay minerals and soil interactions · Mineralogy and Gemology Studies · Iron oxide chemistry and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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