Research

Rotary-electrochemical system: Ca-P Particles (Patent) リン酸カルシウム粒子の合成法（回転型電気化学システム）特許出願

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リン酸カルシウムは、触媒や生物システム用原料などとして重要ですが、粒子サイズや形を均一に作るのは困難でした。私たちは、「回転電極」を用いた電気化学的合成法を開発し、この課題を解決しました。Calcium phosphate Ca3(PO4)2 is an important material used in catalysts and biosystems. However, uniformly controlling its particle size and shape has been difficult. We developed an electrochemical synthesis method using a “rotating electrode” to address this challenge.

Note: ハイドロキシアパタイトは、リン酸カルシウム化合物の中の特定の結晶構造を持つ安定な相の一つです。化学式はCa10(PO4)6(OH)2。Ca/P比が約1.67で、生体中の骨や歯の主成分に最も近い安定かつ難溶性の形態で、生体適合性が高いのが特徴。Hydroxyapatite: A stable phase of calcium phosphate compounds with a specific crystal structure. It has a calcium-to-phosphorus (Ca/P) ratio of about 1.67 and is characterized by being the most stable and least soluble form closest to the main component of bone and teeth in living organisms. Additionally, it exhibits high biocompatibility, making it crucial in biological systems and biomedical applications.

【Breakthrough】
従来法では焼成や粉砕などの工程が必要でしたが、この方法では室温付近の水中で、短時間かつ低コストで粒子を合成できます。電極の回転速度や通電条件を調整するだけで、100ナノメートル以下の球状粒子を高い再現性で製造できます。While conventional methods require steps like calcination and grinding, our method synthesizes particles in water at near room temperature, quickly and at low cost. Simply by adjusting the electrode rotation speed and electrical conditions, we can reliably produce spherical particles below 100 nanometers with high reproducibility.

【成果と応用】

  • 粒子径と形状の制御に成功し、均一な特性を持つ材料の供給が可能になりました。
  • 高機能な触媒や、肌触りの良い化粧品用素材など、様々な産業応用が期待されます。
An image (not exact size and structure)

On-Demand Synthesis of “Calcium Phosphate Fine Particles” via an Electrochemical Method

【Results & Applications】

  • We successfully controlled particle size and shape, enabling the supply of materials with uniform properties.
  • Various industrial applications are expected, including high-performance catalysts and cosmetic materials with a superior texture.

https://patents.google.com/patent/JP2019112668A/ja

Inventors: レンゴロ ウレット Lenggoro Wuled (professor); 光樹 和田 Mitsuki Wada（student）; サアラ スルヤニ Saallah Suryani (student)

Current Assignee: CBIC Chuo Bussan International Co Ltd & Tokyo University of Agriculture and Technology

2017-12-22: Application filed ; 2019-07-11: Publication of JP2019112668A
Status: Pending

https://patents.google.com/patent/JP2019112668A/ja

From our patent application