三维复杂超结构SERS活性基底的可控制备及对痕量爆炸物气体的快速检测

项目名称： 三维复杂超结构SERS活性基底的可控制备及对痕量爆炸物气体的快速检测

项目编号： No.61205150

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 信息四处

项目作者： 张茂峰

作者单位： 合肥工业大学

项目金额： 27万元

中文摘要： 爆炸物TNT/DNT的快速检测在国家安全、公共场所以及环境监测和保护方面具有重要意义。室温下TNT/DNT的蒸气压低（＜100ppb），直接检测困难。SERS技术的特点为痕量TNT/DNT气体的检测和识别提供了一种可靠的现场检测新手段。本项目将从绿色化学和分级结构制造的基本原理出发，运用分子自组装及微纳米合成等手段，重点针对TNT设计和制备具有高密度SERS"热点"的银三维复杂超结构。探索三维复杂超结构合成方法和原理，可控制备兼具高拉曼增强能力和分子捕获能力的新型超结构材料。研究复杂超结构单个粒子的SERS效应,作为SERS机理模型，阐明此结构可能的SERS增强机理。探讨气体的吸附和解吸附机制，利用三维复杂超结构材料优异的性能，达到对痕量TNT气体的快速、高灵敏性检测。将理想SERS性能的超结构材料制成化学传感器，并设计和组装基于硝基爆炸物气体现场直接检测和分析的便携式SERS检测设备。

中文关键词： 复杂超结构；表面增强拉曼光谱；痕量检测；爆炸物；银

英文摘要： It is of great importance for fast detection of explosives TNT/DNT in national security, public sites, and environmental monitoring and protection. Since their low vapour pressure (＜100ppb) at room temperature, it is difficult to detect TNT/DNT gas. The characteristics of SERS technology for trace TNT/DNT gas detection and recognition provides a reliable new detection means. This project will base on the basic principle of the green chemistry and the manufacture of hierarchical structure, by utilizing molecular self-assembly and micro-nano synthesis method, to design and fabricate silver 3D complex super structure materials with high density SERS "hot spot" for trace TNT gas detection. To explore the synthesis method and principle of 3D complex super structure, and to controllable preparation of novel super structured materials with both high Raman enhancement and capture molecular abilities. We will carry out the studies the SERS effect of a single complex super structured particle, as a SERS mechanism model, to clarify the possible SERS enhancement mechanism of this structure. And we will further explore the gas adsorption and desorption mechanism, using the high Raman enhancement abilities and the ability to capture molecules of the super structure material, to fulfill fast, high sensitivity detection of trac

英文关键词： complex super structure；SERS；trace detection；explosive；silver