Disordered-ordered structure transition in co-sputtered solid solution nanoparticles and its impact on catalytic properties

共溅射固溶体纳米粒子的无序结构转变及其对催化性能的影响

• 批准号: 22K04852
• 负责人: グエン タンマイ
• 金额: $ 2.66万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-04-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K04852/
• 关键词: solid solution alloy; intermetallics; nanoparticles; AgPt; structure transition; ORR; Pt alloy; co-sputter deposition

Bimetallic AgPt with various compositions were prepared by cosputter deposition. Substrates including liquid polyethylene glycol, solid substrate, and transmission electron microscope (TEM) grids were used. The sputter conditions were studied to obtain equimolar AgPt alloy. The structure and composition analysis confirmed the formation of solid solution alloy. Besides, trimetal alloy nanoparticles (AgPtCu) were synthesized.The catalytic performance in oxygen reduction reaction (ORR) were evaluated for tri- and bi-metal alloy nanoparticles and sputtered Pt nanoparticles. AgPt was found to outperform others. The improvement was thought to arise from the stable structure of AgPt and the formation of AgPt alloy.

用共溅射法制备了不同成分的AgPt双金属。使用包括液体聚乙二醇、固体基底和透射电子显微镜（TEM）网格的基底。研究了等摩尔AgPt合金的溅射条件。组织和成分分析证实了固溶体合金的形成。此外，还制备了三金属合金纳米粒子（AgPtCu），并对三、双金属合金纳米粒子和溅射Pt纳米粒子在氧还原反应（ORR）中的催化性能进行了评价。发现AgPt优于其他。这种改善被认为是由于AgPt的稳定结构和AgPt合金的形成。

项目成果

Gold Nanoparticles Sputtered onto Oleic Acid and Oleylamine Liquids

金纳米粒子溅射到油酸和油胺液体上

• 发表时间: 2022
• 作者: Feng Xiaoyi; Nguyen Mai Thanh and Yonezawa Tetsu;Wei Jian Sim，Mai Thanh Nguyen and Tetsu Yonezawa;Yuen-ting Rachel Chau，Mai Thanh Nguyen and Tetsu Yonezawa;Mai Thanh Nguyen and Tetsu Yonezawa;Mai Thanh Nguyen and Tetsu Yonezawa
• 通讯作者: Mai Thanh Nguyen and Tetsu Yonezawa

Solid solution nanoparticles obtained by co-sputter deposition onto liquid polyethylene glycol

通过共溅射沉积到液体聚乙二醇上获得的固溶体纳米颗粒

• 发表时间: 2022
• 作者: Mingbei Zhu;Mai Thanh Nguyen and Tetsu Yonezawa;Mai Thanh Nguyen and Tetsu Yonezawa
• 通讯作者: Mai Thanh Nguyen and Tetsu Yonezawa

Structure of Bimetallic Nanoparticles Synthesized by Sputtered Deposition onto Liquid and Their Catalytic Properties

液体溅射沉积双金属纳米粒子的结构及其催化性能

• 发表时间: 2022
• 作者: Feng Xiaoyi; Nguyen Mai Thanh and Yonezawa Tetsu;Wei Jian Sim，Mai Thanh Nguyen and Tetsu Yonezawa;Yuen-ting Rachel Chau，Mai Thanh Nguyen and Tetsu Yonezawa;Mai Thanh Nguyen and Tetsu Yonezawa
• 通讯作者: Mai Thanh Nguyen and Tetsu Yonezawa

Synthesis of Pt single atoms catalyst by magnetron sputtering

磁控溅射合成Pt单原子催化剂

• 发表时间: 2023
• 作者: Feng Xiaoyi; Nguyen Mai Thanh and Yonezawa Tetsu
• 通讯作者: Nguyen Mai Thanh and Yonezawa Tetsu

Reduced Graphene Oxide Supported Transition Metal Oxide Electrocatalysts for Zinc-Air and Zinc-Air Flow Batteries

用于锌空气和锌空气液流电池的还原氧化石墨烯负载的过渡金属氧化物电催化剂

• 发表时间: 2023
• 作者: Feng Xiaoyi; Nguyen Mai Thanh and Yonezawa Tetsu;Wei Jian Sim，Mai Thanh Nguyen and Tetsu Yonezawa
• 通讯作者: Wei Jian Sim，Mai Thanh Nguyen and Tetsu Yonezawa