朱洪飞,张诗茹,林良良

• 1:江南大学化学与材料工程学院
• 2:合成与生物胶体教育部重点实验室

摘要(Abstract)：

针对传统贵金属纳米材料制备过程存在步骤繁琐、使用化学还原剂等问题，提出微通道反应器耦合介质阻挡放电(DBD)等离子体的连续流合成策略。在微通道内利用等离子体还原HAuCl4为纳米金，与Al_2O_3复合生成Au@Al_2O_3，并探究了HAuCl_4浓度、停留时间和等离子体功率等因素对产物的影响。结果表明，较优合成条件：HAuCl_4浓度为0.5 mmol·L~(-1)、停留时间为6 s、等离子体功率为5.5 W。基于Au@Al_2O_3纳米颗粒制备的表面增强拉曼散射（SERS）基底对不同化合物均呈现高灵敏、高稳定的检测性能。其中，对罗丹明B的检测下限低至10~(-12) mol·L~(-1)，且在10~(-4)～10~(-12) mol·L~(-1)内可实现其定量检测。研究成果为功能纳米材料的高效可控制备提供了借鉴。

关键词(KeyWords)： 微反应器;等离子体;过程强化;Au@Al_2O_3纳米颗粒;表面增强拉曼散射

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（22078125,52004102）;; 中国博士后科学基金（2023M741472）;; 江苏省研究生科研与实践创新计划（KYCX25＿2679）

作者(Author): 朱洪飞,张诗茹,林良良

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