M_(0.1)-BiVO_(4)(M=Fe,Cr,Mo,W)氨气传感器性能的研究  

Study of sensing performance of M_(0.1)-BiVO_(4)(M=Fe,Cr,Mo,W)ammonia sensors

作　　者：杨琳 张毅然[1,2] 林赫 YANG Lin;ZHANG Yiran;LIN He(Key Laboratory for Power Machinery and Engineering of Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China;College of Smart Energy,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学动力机械与工程教育部重点实验室,上海200240 [2]上海交通大学智慧能源创新学院,上海200240

出　　处：《传感器与微系统》2025年第1期34-38,共5页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(52006142,52106173)。

摘　　要：采用溶液燃烧合成(SCS)法合成了纯钒酸铋(BiVO_(4))和元素掺杂的M_(0.1)-BiVO_(4)(M=Fe,Cr,Mo,W),制备基于氧化钇稳定的氧化锆(YSZ)固体电解质和Ag参比电极的混合电位型氨气(NH3)传感器。研究发现,随着工作温度的升高,灵敏度呈现先增大后减小的趋势,分别归因于电化学反应活性的提高和活跃的气固多相催化反应降低了三相界面(TPB)区域的NH3吸附量。传感器在工作温度525℃下表现出最优的灵敏度(-128.092 mV/dec)。Fe掺杂将响应时间从471.6 s降低至95.4 s,Mo掺杂将灵敏度提升至-168.786 mV/dec。极化曲线的结果验证了传感器响应机理符合混合电势理论。Pure BiVO_(4)and element-doped M_(0.1)-BiVO_(4)(M=Fe,Cr,Mo,W)are synthesized by solution combustion synthesis(SCS)method,and a mixed potential NH_(3) sensor based on yttria stabilized zirconia(YSZ)solid electrolyte and Ag reference electrode is prepared.It is found that the sensitivity first increase and then decrease with the increase of operating temperature,which is attributed to the increase of electrochemical reaction activity and the reduction of NH3 adsorption in the three-phase boundary(TPB)area by the active gas-solid heterogeneous catalytic reaction,respectively.The sensor exhibits the optimal sensitivity(-128.092 mV/dec)at an operating temperature of 525℃.Fe doping reduces the response time from 471.6 s to 95.4 s,while Mo doping increases the sensitivity to-168.786 mV/dec.The results of the polarization curve verify that the sensor response mechanism conforms to the mixed potential theory.

关 键 词：M_(0.1)-钒酸铋 氨气传感器 煅烧温度 元素掺杂 敏感性能 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]