Potentiometric pH Sensor Based on MoO3 Film Modified With WO3 Nanoparticles

被引：0

作者：

Lai, Chih-Hsien ^{[1
]}

Chen, Yu-Wei ^{[1
]}

Chou, Jung-Chuan ^{[1
]}

Yang, Po-Hui ^{[1
]}

Kuo, Po-Yu ^{[1
]}

Nien, Yu-Hsun ^{[2
]}

Chen, Wei-Shun ^{[1
]}

Huang, Jyun-Ming ^{[1
]}

Chen, Xin-Han ^{[2
]}

机构：

[1] Natl Yunlin Univ Sci & Technol, Grad Sch Elect Engn, Touliu 64002, Taiwan

[2] Natl Yunlin Univ Sci & Technol, Grad Sch Chem & Mat Engn, Touliu 64002, Taiwan

来源：

IEEE SENSORS JOURNAL | 2025年 / 25卷 / 06期

关键词：

Sensors; Ions; Hydrogen; Nanoparticles; Three-dimensional printing; Sputtering; Sensitivity; Electrodes; Circuit stability; Chemicals; Flexible printed circuit board; molybdenum trioxide film; pH sensor; potentiometric; tungsten trioxide nanoparticles;

D O I：

10.1109/JSEN.2025.3533746

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This study presents a pH sensor based on molybdenum trioxide (MoO3) film modified with tungsten trioxide (WO3) nanoparticles. MoO3 film was prepared by R. F. sputtering, and hydrothermally synthesized WO3 nanoparticles were drop-cast on the MoO3 film for hydrogen ion detection. The sensing mechanism was based on voltage measurement. The structure and morphology of the prepared materials were analyzed using X-ray diffraction and scanning electron microscopy, and the successful synthesis of the materials was confirmed by X-ray photoelectron spectroscopy. Linear range of the WO3 nanoparticles/MoO3 potential sensor expanded from a pH range from 1-5 to 1-7, with a sensitivity of 32.49 mV/pH. The sensor also demonstrated fast response, good repeatability, and strong resistance to interference, achieving an excellent recovery rate in measurements of commercial fruit juices. This study offers a new approach for acid sensing.

引用

页码：9375 / 9383

页数：9

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