山东科学2025，Vol.38Issue(3)：72-83,12.DOI:10.3976/j.issn.1002-4026.2025026
用于海水微生物燃料电池原位监测的新型伏安式pH传感器
A novel voltammetric pH sensor for in situ monitoring of seawater microbial fuel cell
摘要
Abstract
Microbial fuel cells(MFCs)hold considerable potential in bioelectricity generation and bioremediation,and their operational processes are highly sensitive to pH fluctuations.Therefore,online pH monitoring is crucial for optimizing the performance of MFCs.Existing pH meters often fall short in meeting the specific demands associated with online pH monitoring.In this study,we designed a novel voltammetric pH sensor based on electrochemically in situ-synthesized graphene-modified screen-printed electrodes.By surface coupling with the hydrogen-bond carrier alizarin safirol SE,the sensor achieves excellent linearity in pH detection within the range of 4.0 to 9.0,with a sensitivity of 70.7 mV per pH unit.The measurement cycle could be controlled within 15 s.This study successfully demonstrated in situ long-term pH dynamic monitoring in a seawater-based MFC constructed using coastal activated sludge,yielding ideal results.Notably,the incorporation of the aforementioned hydrogen-bond carrier enhanced the proton diffusion rate at the graphene interface,thereby improving the performance of the voltammetric pH sensor.Furthermore,this study revealed the considerable potential of this strategy for improving the reference system,which is expected to further substantially enhance the long-term sensing performance of this strategy.In addition,this strategy provides a new approach for long-term in situ online pH monitoring and thereby contribues to the future development of MFCs.关键词
微生物燃料电池/海洋环境监测/伏安式pH传感器/原位连续监测Key words
microbial fuel cell/marine environment monitoring/voltammetric pH sensor/in situ continuous monitoring分类
动力与电气工程引用本文复制引用
李一苇,宋瑾,厉运周,王军成..用于海水微生物燃料电池原位监测的新型伏安式pH传感器[J].山东科学,2025,38(3):72-83,12.基金项目
山东省重点研发计划(2023ZLYS01) （2023ZLYS01）
国家重点研发计划(2022YFC3104200) （2022YFC3104200）
齐鲁工业大学(山东省科学院)科教产融合试点工程重大创新专项项目(2023HYZX01) （山东省科学院）
