%0 Journal Article
%T 原位生长与非原位生长的α-Fe<sub>2</sub>O<sub>3</sub>纳米阵列制备及气敏特性研究<br>Preparation and Gas-Sensitive Properties of α-Fe<sub>2</sub>O<sub>3</sub> Nano-Arrays Grown in Situ and Non-Situ
%A 贺晓丽
%J Optoelectronics
%P 29-35
%@ 2164-5469
%D 2023
%I Hans Publishing
%R 10.12677/OE.2023.131004
%X 本文主要采用水热法，用无水氯化铁和无水硫酸钠制备出在陶瓷管基底上原位生长的α-Fe<sub>2</sub>O<sub>3</sub>纳米棒阵列和无基底非原位生长的<span>α-Fe</span><sub>2</sub><span>O</span><sub>3</sub>粉末纳米棒。利用扫描电子显微镜、X射线衍射、X射线光电子能谱镜等方法对制备所得的α-Fe<sub>2</sub>O<sub>3</sub>材料进行了形貌、元素组成等表征。通过气敏测试结果，表明原位生长气敏特性灵敏度值要高于非原位生长非原位生长，且都对丙酮气体具有最好的气敏特性，响应恢复时间短，稳定性好。说明原位生长的<span>α-Fe</span><sub>2</sub><span>O</span><sub>3</sub>纳米阵列整齐有序，可提高材料气敏特性。<br />
In this paper, <span>α-Fe</span><sub>2</sub><span>O</span><sub>3</sub> nanorods arrays grown in situ on ceramic tube substrate and <span>α-Fe</span><sub>2</sub><span>O</span><sub>3</sub> powder nanorods grown in situ without substrate were prepared by hydrothermal method using anhydrous ferric chloride and anhydrous sodium nitrate. The morphology and elemental composition of <span>α-Fe</span><sub>2</sub><span>O</span><sub>3</sub> materials were characterized by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The gas-sensitive test results show that the sensitivity value of in situ growth is higher than that of non-in situ growth and non-in situ growth, and both have the best gas-sensitive characteristics to acetone gas, short response recovery time and good stability. These results indicate that the <span>α-Fe</span><sub>2</sub><span>O</span><sub>3</sub> nanoarrays grown in situ are orderly and can improve the gas-sensitive properties of the materials.
%K 原位生长，纳米阵列，氧化铁<br>In Situ Growth
%K Nano-Array
%K Iron Oxide
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=63606