Ce0.8Gd0.2O1.95 based Mixed Potential NH3 Sensors attached with CoMoO4/CoV2O6 Sensing Electrodes

IF 3.7 1区化学 Q1 CHEMISTRY, ANALYTICAL

Sensors and Actuators B: Chemical Pub Date : 2025-09-24 DOI:10.1016/j.snb.2025.138838

Yue Zhang, Tong Wang, Sitong Feng, Jiusheng Cai, Lingchu Huang, Zuorong Huang, Fengmin Liu, Xishuang Liang, Geyu Lu

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引用次数: 0

Abstract

Ammonia (NH₃) is an important industrial raw material as well as a typical environmental pollutant. Therefore, the rapid and precise monitoring of its concentration is essential for protecting human health and ensuring the sustainable functioning of ecosystems. In this study, CoMoO₄/CoV₂O₆ sensing electrode materials were synthesized via the sol-gel method, and a mixed potential type NH₃ sensor based on Ce_0.8Gd_0.2O_1.95 was successfully developed. By adjusting the amount of CoMoO₄, the ion transport capability at the interface between the sensing electrode material and the solid electrolyte was significantly enhanced, which in turn improved the electrochemical reaction efficiency and sensitivity of the sensor. Among the fabricated sensors, the sensor using 10 mol% CoMoO₄/CoV₂O₆ as the sensing material demonstrated the highest response value of -103 mV to 100 ppm NH₃ at 500°C. This sensor not only exhibits high sensitivity but also possesses rapid response and recovery characteristics, excellent repeatability, selectivity, and long-term stability. The NH₃ sensor developed in this study shows significant potential for applications in industrial process monitoring, environmental monitoring, and related fields.

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基于CoMoO4/CoV2O6传感电极的ce0.8 gd0.2 2o1.95混合电位NH3传感器

氨（NH3）是重要的工业原料，也是典型的环境污染物。因此，对其浓度的快速和精确监测对于保护人类健康和确保生态系统的可持续功能至关重要。本研究通过溶胶-凝胶法合成了CoMoO4/CoV2O6传感电极材料，成功研制了基于ce0.8 gd0.2 2o1.95的混合电位型NH3传感器。通过调节CoMoO4的用量，传感电极材料与固体电解质界面处的离子输运能力显著增强，从而提高了传感器的电化学反应效率和灵敏度。在所制备的传感器中，以10 mol% CoMoO4/CoV2O6为传感材料的传感器在500℃下对100 ppm NH3的响应值最高，为-103 mV。该传感器不仅灵敏度高，而且具有快速的响应和恢复特性，具有良好的重复性、选择性和长期稳定性。本研究开发的NH3传感器在工业过程监测、环境监测等相关领域具有很大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sensors and Actuators B: Chemical 工程技术-电化学

CiteScore

14.60

自引率

11.90%

发文量

1776

审稿时长

3.2 months

期刊介绍： Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.