摘要
为了促进SnO_(2)基金属氧化物半导体的界面电荷传输和表面反应,基于贵金属掺杂策略,通过溶剂热法和原位还原法制备了钯掺杂SnO_(2)微球复合材料(Pd-SnO_(2)),成功在Pd-SnO_(2)复合材料上构建了Pd活性物种并用于三乙胺气体传感。结果表明:由于Pd活性物种有效促进了界面电荷转移并显著加速了材料表面反应动力学,优化后的质量分数为5%的Pd-SnO_(2)的复合材料显示出了多重传感优势。具体地,在132℃的操作温度下,其对质量浓度为50 mg/L三乙胺显示了超大的响应值(1 406),是SnO_(2)响应值(26)的54倍。此外,5%Pd-SnO_(2)还显示出了优越的选择性、超低的检测限和良好的长期稳定性。
To promote interfacial charge transport and surface reactions of SnO_(2)-based metaloxide semiconductors,palladium-doped SnO_(2) microsphere composites(Pd-SnO_(2))were prepared based on the noble metal doping strategy by solvothermal and insitu reduction methods,and the Pd active species were successfully constructed on the Pd-SnO_(2) composites for triethylamine gas sensing.The results show that optimized composites with 5%mass percentage of Pd-SnO_(2) exhibit multiple sensing advantages due to the Pd active species promoted interfacial charge transfer and significantly accelerated the reaction kinetics on the material surface.Specifically,an ultra-high response(1460)to 50 mg/L triethylamine is shown at an operating temperature of 132℃,which is 54 times higher than that of SnO_(2)(26).In addition,5%Pd-SnO_(2) show superior selectivity,ultra-low detection limit and good long-term stability.
作者
刘锦梅
冯韶涵
孙丽霞
李子萱
廖丹葵
孙建华
LIU Jinmei;FENG Shaohan;SUN Lixia;LI Zixuan;LIAO Dankui;SUN Jianhua(School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Petrochemical Resource Processingand Process Intensification Technology,Nanning 530004,China)
出处
《广西大学学报(自然科学版)》
北大核心
2025年第2期424-435,共12页
Journal of Guangxi University(Natural Science Edition)
基金
国家自然科学基金项目(22165001)
广西自然科学基金项目(2025GXNSFAA069918)。
关键词
二氧化锡
钯掺杂
三乙胺
气敏特性
电荷载流子传输
tin dioxide
Pd-doped
triethylamine
gas sensing property
charge carrier transport
作者简介
通信作者:孙建华(1978-),男,安徽宿州人,博士,正高级实验师,E-mailsunjhgx@163.com。
