第22回APT賞(APT Distinguished Paper Award)受賞者 (2023)
The 22nd/2023 Advanced Powder Technology (Elsevier) APT Distinguished Paper Award 受賞 (SPTJ)
Tiara N. Pratiwi (Tokyo University of Agriculture and Technology)
Masao Gen (Tohoku University, Japan Science and Technology Agency)
I. Wuled Lenggoro (Tokyo University of Agriculture and Technology)
One-step fabrication of soot particle-embedded fibrous membranes for solar distillation using candle burning-assisted electrospinning ろうそく燃焼を利用した静電紡糸によるすす粒子分散繊維膜のワンステップ製造と太陽熱蒸留への応用
Advanced Powder Technology：Vol.34, 104190 (2023) doi.org/10.1016/j.apt.2023.104190
受賞理由（学会のサイトより）：
太陽熱蒸留は，低コストかつ低環境負荷なプロセスで汚水の浄化や海水の淡水化を実現する手段として期待されるが，太陽光を効果的に熱に変換する材料の開発が鍵となっていた。本論文は，ろうそくの不完全燃焼により生成する炭素系微粒子（すす粒子）を光熱変換材料として活用し，これを静電紡糸法により製造される樹脂繊維膜と複合化させる新規手法を提案したものである。具体的には，ポリフッ化ビニリデンの静電紡糸過程において，ろうそく炎中で生成したすす粒子を気相中で固定化させる簡便な1 段階操作によって，繊維径が数100 nm の樹脂繊維とすす粒子が複合化された膜材料を得る手法であり，静電紡糸された樹脂繊維に対するすす粒子の搬送方法や搬送位置によって，すす粒子の複合化状態を制御できる可能性を見出した。さらに，すす粒子／樹脂繊維膜を，海水を模擬した塩水や蒸留水の気液界面に設置し，ここに模擬太陽光を照射するモデル実験によって，本研究より設計されたすす粒子／樹脂繊維膜が太陽光照射下における気液界面の選択的な加温や水の蒸発現象の促進に活用可能であることを実証した。これらの先進的な研究成果は，今後の粉体工学の発展に寄与するところが多大であると考えられ，粉体工学会 APT 賞（APT Distinguished Paper Award）に値すると判断した。“Solar distillation is expected as a means to purify wastewater and desalinate seawater through a low-cost and low-environmental-load process, but the development of materials that can effectively convert sunlight into heat has been a key challenge. This paper proposes a novel method of utilizing carbon-based nanoparticles (soot particles) generated from incomplete combustion of candles as a photothermal conversion material, and compositing them with resin fibrous membranes produced by electrospinning. Specifically, it is a method to obtain a membrane material where resin fibers with a diameter of a few hundred nanometers are composited with soot particles through a simple one-step operation of fixing the soot particles generated in the candle flame in the gas phase during the electrospinning process of polyvinylidene fluoride. It was found that the compositing state of soot particles can be controlled by the transportation method and position of the soot particles relative to the electrospun resin fibers. Furthermore, by conducting a model experiment of placing the soot particle/resin fibrous membrane at the gas-liquid interface of simulated seawater or distilled water and irradiating it with simulated sunlight, it was demonstrated that the soot particle/resin fibrous membrane designed in this study can be utilized for selective heating of the gas-liquid interface under sunlight irradiation and promoting the evaporation of water. These pioneering research results are considered to greatly contribute to the future development of particle technology and were deemed worthy of the APT Award (APT Distinguished Paper Award) from the Society of Powder Technology, Japan.”
Detail of our paper: https://empatlab.net/2023/08/14/candle-assisted-spinning/
Particles & Transfer 