2025年 05期

摘要(Abstract)：

为了研究纳米分子马达的化学驱动性能，设计和制备一种核壳结构液态金属纳米分子马达，并研究其在过氧化氢溶液中的运动行为；采用超声破碎和原位聚合法制备聚多巴胺-聚乙烯亚胺聚合物层包覆的液态金属核壳结构，然后在其表面通过原位电置换反应实现铂纳米颗粒的均匀负载，成功制备具有多层核壳结构的液态金属纳米分子马达；对该液态金属纳米分子马达的微观结构与化学组成进行表征，系统研究该液态金属纳米分子马达在不同过氧化氢含量的水溶液中的运动特性。结果表明：制备的液态金属纳米分子马达为粒径为100～150 nm的球形多壳层核壳结构，以液态金属为核芯，以聚合物层与铂颗粒层为外壳；在过氧化氢水溶液中，液态金属纳米分子马达表面负载的铂层可催化分解过氧化氢，在周围形成分解产物浓度梯度，使该纳米分子马达表现出增强扩散的行为，具有优异且稳定的化学驱动性能。

关键词(KeyWords)：液态金属;微纳米分子马达;核壳结构;化学驱动

基金项目(Foundation):国家自然科学基金项目(52201164)

作者(Author):郭慧茹,任龙,官建国

DOI:10.13349/j.cnki.jdxbn.20250716.002

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