基于一维纳米结构的二元气敏材料相互增强气体传感器选择性和稳定性

项目名称： 基于一维纳米结构的二元气敏材料相互增强气体传感器选择性和稳定性

项目编号： No.21473093

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 杨大驰

作者单位： 南开大学

项目金额： 90万元

中文摘要： 本项目拟研究由一维纳米结构的二元气敏材料气体传感器相互增强的选择性和稳定性。通过控制氧化铝模板孔径，合成二元气敏材料几何参数不同（如直径大小）纳米线，研究其对气体传感器稳定性影响；采用电沉积法、或无电沉积(即化学镀)方法或溶胶-凝胶方法合成二元气敏材料组成的杂化纳米线，研究气敏材料成分分布和纳米微结构对气体传感器的选择性和稳定性相互增强作用；采用连续电化学沉积方法，合成竹节状二元气敏材料异质结纳米线，研究该纳米结构传感器的气体选择性；通过结合电化学沉积与腐蚀技术合成多孔二元气敏材料杂化纳米线，研究其相互增强的气敏性、选择性和稳定性。 本项目通过对二元气敏材料准一维纳米结构合成技术拓展，二元气敏纳米材料化学成分分布分析、微观结表征与形成机理研究，进一步探索相互增强气体传感器的选择性和稳定性;为气体传感器的低耗能、小型化、智能化及多功能集成化应用提供实验基础，并具有重要的科学性和实用价值。

中文关键词： 一维纳米结构；二元气敏材料；气体传感器；增强稳定性；增强选择性

英文摘要： In this research project, we propose to study the mutually enchanced gas-sensor selectivity and stability of the designed quasi-one- dimensional (1D) nanostructure made of binary gas sensitive materials (BGSM); By controlling the geometric parameters such as channel diameter of anodic aluminum oxide (AAO) templates, the BGSM nanowires with different diameter are synthesized, and the diameter dependent stability of gas sensor are then investigated; By selecting proper approaches among electrochemical deposition, electroless deposition (chemical deposition) and sol-gel process, the ID hybrid nanostructures are prepared, and then the mutually enchanced selectivity and stability of gas sensors by their microstructures and chemical distribution are studied; By sequent electrochemical deposition inside the AAO channel, the bamboo-like 1D BGSM nanowire heterojunctions arrays are designed, and their selectivity of the gas sensor are then studied; By using a combined electrochemical deposition and chemical etching technique, 1D BGSM porous hybrid nanowires are synthesized, and their mutually enchanced gas-sensor sensitivity, selectivity and stability are investigated. In this project, via the developments of synthesis technique of 1D BGSM nanostructures, the analysis of chemical composition distribution along the nanostructures，the microstructure characterization of the nanostructures and the study of synthesis mechanism, we further explore the mutually-enchanced selectivity and stability of gas sensors; Our research project provide experimental basis on the applications of low energy, miniaturization, intelligent and multi-functional integrated gas sensor and show important scientific and practical significance.

英文关键词： One-dimensional Nanostructures;Binary Gas-Sensitive Materials;Gas Sensor;Enchanced Stability;Enchanced Selectivity