Synthesis of gluconate modified layered titanate particles using hydrolysis reaction of Ti alkoxide and characterization of their swelling behavior and structural color

Uekawa, Naofumi; Ono, Yutaka; Kojima, Takashi

doi:10.1007/s10971-017-4517-6

Cited by 2 publications

(1 citation statement)

References 28 publications

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“…The preservation of the multi-layered structure is crucial since it avoids sacrificing half of the microparticle’s surface upon Pt deposition, as it occurs for smooth spherical particles. It should be noted that layered titanate presents a similar structure to the MXene-derived TiO 2 microparticles, also having the advantage of simpler and cheaper preparation, in principle 45 . Nevertheless, the utilization of commercial exfoliated Ti 3 C 2 T x MXene and its oxidation into TiO 2 via thermal annealing was considered a more reproducible approach in this work.…”

Section: Resultsmentioning

confidence: 99%

Trapping and detecting nanoplastics by MXene-derived oxide microrobots

et al. 2022

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Nanoplastic pollution, the final product of plastic waste fragmentation in the environment, represents an increasing concern for the scientific community due to the easier diffusion and higher hazard associated with their small sizes. Therefore, there is a pressing demand for effective strategies to quantify and remove nanoplastics in wastewater. This work presents the “on-the-fly” capture of nanoplastics in the three-dimensional (3D) space by multifunctional MXene-derived oxide microrobots and their further detection. A thermal annealing process is used to convert Ti3C2Tx MXene into photocatalytic multi-layered TiO2, followed by the deposition of a Pt layer and the decoration with magnetic γ-Fe2O3 nanoparticles. The MXene-derived γ-Fe2O3/Pt/TiO2 microrobots show negative photogravitaxis, resulting in a powerful fuel-free motion with six degrees of freedom under light irradiation. Owing to the unique combination of self-propulsion and programmable Zeta potential, the microrobots can quickly attract and trap nanoplastics on their surface, including the slits between multi-layer stacks, allowing their magnetic collection. Utilized as self-motile preconcentration platforms, they enable nanoplastics’ electrochemical detection using low-cost and portable electrodes. This proof-of-concept study paves the way toward the “on-site” screening of nanoplastics in water and its successive remediation.

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Section: Resultsmentioning

confidence: 99%

Trapping and detecting nanoplastics by MXene-derived oxide microrobots

et al. 2022

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Synthesis of Defect and Valence State Tuned Metal Oxide Nanoparticles with Colloid Chemical Solution Process: Control of Optical and Electrical Characteristics

Uekawa

2020

Chemistry Letters

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Dialysis and peptization, which are colloid chemical solution processes, are simple and effective techniques for controlling hydrolysis of hydrated metal cations. These synthetic processes preparation of stable sol with dispersion of doped oxide nanoparticles with wide molar fraction range from metal chloride aqueous and glycol solutions. Furthermore, control and introduction of lattice defects can be possible due to low temperature synthesis below 373 K. Design of optical and electrical characteristics of oxide nanoparticles by the solutions processes can be realized by controlling the situation of doping and lattice defects.

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Synthesis of gluconate modified layered titanate particles using hydrolysis reaction of Ti alkoxide and characterization of their swelling behavior and structural color

Cited by 2 publications

References 28 publications

Trapping and detecting nanoplastics by MXene-derived oxide microrobots

Trapping and detecting nanoplastics by MXene-derived oxide microrobots

Synthesis of Defect and Valence State Tuned Metal Oxide Nanoparticles with Colloid Chemical Solution Process: Control of Optical and Electrical Characteristics

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