学生のHASAN, Md. Mahmudulさん（博士後期課程3年、物質化学領域、長尾研究室）が国際会議Nanotechnology Malaysia Biennial Symposium（NANOSYM 2021）においてBest Student Paper Awardを受賞しました。

　NANOSYM 2021は、マレーシアナノテクノロジー協会（MNA）が主催で、10月11日から13日にかけてオンラインにて開催されました。

■受賞年月日
　令和3年10月13日

■研究題目、論文タイトル等
Hierarchical Metal Nanostructures: Synthesis, Characterizations, and Electrocatalysis
（階層的金属ナノ構造：合成、特性評価、および電極触媒作用）

■研究者、著者
Md. Mahmudul Hasan, Yuki Nagao

■受賞対象となった研究の内容
The physical and chemical characteristics of hierarchical metal nanostructures have sparked scientific interest in heterogeneous catalysis and electrocatalysis. Recently, the fabrication of well-defined nanostructures has received a lot of attention. In this study, we have successfully fabricated different hierarchical metal nanostructures and applied for Ascorbic acid (AA) electrooxidation. AA, known as vitamin C, is environment-friendly and releases two electrons during electro-oxidation and could be used as an alternative fuel for a direct liquid fuel cell system. Well-defined hierarchical silver dendrite nanostructures were successfully deposited on the glassy carbon electrode (GCE) by the simple electroless deposition method without using any capping agent, current, pressure, or temperature. This integrated electrode is applied for AA electrooxidation in neutral medium to understand the oxidation pathway. The kinetic study revealed the electron transfer process is stepwise at slower scan rates and concerted at faster scan rates. We have also synthesized Christmas-Tree-Shaped palladium nanostructures featuring many sharp edges on the GCE (Pd/GCE) by a controlled electrodeposition technique. These unique nanostructures showed excellent AA electrocatalytic activity in alkaline solution. These new synthesis processes can play an important role in the preparation of hierarchical metal nanostructures for electrocatalysis.

■受賞にあたって一言
We are honored to win the prize for Best Student Paper Award at NANOSYM 2021. First and foremost, I want to express my gratitude to my supervisor Associate Professor Yuki Nagao for his excellent remarks, suggestions, and guidance. I also appreciate Nagao LAB members for their supports. This award encouraged me to explore more in the field of science and technology.

令和3年12月8日