室温下锰掺杂Y(OH)_(3)/Fe_(2)O_(3)复合材料对甲醛气体传感特性的研究  

Study on Formaldehyde Gas Sensing Properties of Mn-Doped Y(OH)_(3)/Fe_(2)O_(3)Composites at Room Temperature

作　　者：阿尔孜古・许克尔 李锦[1] AERZIGU Xukeer;LI Jin(School of Physics and Technology,Xinjiang University,Urumqi Xinjiang 830017,China)

机构地区：[1]新疆大学物理科学与技术学院,新疆乌鲁木齐830017

出　　处：《新疆大学学报（自然科学版）（中英文）》2023年第1期61-68,共8页Journal of Xinjiang University(Natural Science Edition in Chinese and English)

基　　金：新疆维吾尔自治区自然科学基金面上项目“纳米复合材料ZnO/ZIFs的设计调控制备及气敏机理研究”(2022D01C417).

摘　　要：采用水热法合成了一种锰掺杂Y(OH)_(3)/Fe_(2)O_(3)的高性能甲醛传感器.通过XRD、SEM、EDS和XPS分析了锰掺杂Y(OH)_(3)/Fe_(2)O_(3)复合材料的结构、形貌以及组成成分.通过表征结果发现,锰元素掺杂Y(OH)_(3)/Fe_(2)O_(3)使得Y(OH)_(3)/Fe_(2)O_(3)颗粒分布更加均匀,表面氧空位缺陷增多,有可能提供更多的活性位点来吸附甲醛气体,增强了锰掺杂Y(OH)_(3)/Fe_(2)O_(3)的气敏性能.气敏测试结果表明:基于锰掺杂Y(OH)_(3)/Fe_(2)O_(3)复合材料的甲醛传感器相比Y(OH)_(3)/Fe_(2)O_(3)不仅具有高灵敏度和良好的选择性,而且能够在室温下表现出快速的响应和恢复特性.最后讨论了锰掺杂Y(OH)_(3)/Fe_(2)O_(3)对甲醛气敏性增强的传感机制,进一步说明基于锰掺杂Y(OH)_(3)/Fe_(2)O_(3)复合材料的甲醛传感器在实际应用中的潜在价值.A high-performance formaldehyde sensor Mn-doped Y(OH)_(3)/Fe_(2)O_(3)was synthesized by hydrothermal method.The structure,morphology and composition of Mn-doped Y(OH)_(3)/Fe_(2)O_(3)composites were analyzed by XRD,SEM,EDS and XPS.Through the characterization results,it was found that Mn-doped Y(OH)_(3)/Fe_(2)O_(3)made Y(OH)_(3)/Fe_(2)O_(3)particle distribution more uniform,and the surface oxygen vacancy defects increase,which provides more active sites to adsorb formaldehyde gas and enhances the gas sensing performance of Mn-doped Y(OH)_(3)/Fe_(2)O_(3).In addition,the experiments show that compared with Y(OH)_(3)/Fe_(2)O_(3),the formaldehyde sensor based on Mn-doped Y(OH)_(3)/Fe_(2)O_(3)composite not only has high sensitivity and good selectivity,but also can exhibit fast response and recovery characteristics at room temperature.Finally,the paper also discusses the enhanced sensing mechanism of Mn-doped Y(OH)_(3)/Fe_(2)O_(3)for formaldehyde,which further illustrates the potential value of formaldehyde sensor based on Mn-doped Y(OH)_(3)/Fe_(2)O_(3)composite in practical applications.

关 键 词：锰掺杂Y(OH)3/Fe2O3 室温 快速响应 气敏传感性能 

分 类 号：TB33[一般工业技术—材料科学与工程] TP212[自动化与计算机技术—检测技术与自动化装置]