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
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开放科学（资源服务）标志码（OSID）
A novel voltammetric pH sensor for in situ monitoring of
seawatermicrobialfuelcell
LI Yiwei1 ，SONG Jin'，LI Yunzhou²，WANG Juncheng²
（1.Institute of Biology，Qilu University of Technology（Shandong Academy of Sciences），Jinan 250l03，China;2.InstituteofOcenographic Instrumentation，QiluUniversityofTechnolgy（Shandong AcademyofSiences），Qingdao2661China）
Abstract Ψ：Ψ Microbial fuelcels（MFCs）hold considerable potential in bioelectricity generationandbioremediation，and their operational processesare highlysensitive topHfluctuations.Therefore，onlinepHmonitoring iscrucialforoptimizing theperformance of MFCs.Existing pHmeters often fallshort in meting the specicdemandsassociated withonline pH
第3期 李一苇，等：氢键网络调控的伏安式pH传感器用于海水微生物燃料电池原位监测
monitoring.In thisstudy，wedesigneda novel voltammetricpHsensor basedon electrochemicalyin situ-synthesized graphene-modified screen-printed electrodes.Bysurfacecoupling withthe hydrogen-bondcarrer alizarin safirol SE，the sensor achieves excelent linearity in pH detection within the range of 4.0 to 9.0，with a sensitivity of 70.7mV per pH unit. The measurement cycle could be controlled within 15s .This study successfully demonstrated in situ long-term pH dynamic monitoring in aseawater-based MFC constructed using coastal activated sludge，yielding ideal results.Notably，the incorporationof the aforementioned hydrogen-bondcarier enhanced the proton difusion rateatthe graphene interface， therebyimproving theperformance of thevoltammetricpHsensor.Furthermore，this studyrevealedthe considerable potentialofthisstrategyforimproving thereferencesystem，whichisexpectedtofurthersubstantiallyenhancethelongtermsensingperformanceofthisstrategy.Inaddition，thisstrategyprovidesanewapproachforlong-terminsituonlinepH monitoring and thereby contribues to the future development of MFCs.
Key words ： microbial fuel cell;marine environment monitoring；voltammetric pHsensor；in situ continuous monitoring
面对化石燃料持续枯竭、气候变化和污染物排放等挑战，全球对绿色能源和无毒废物处理技术的需求日益迫切。（剩余17870字）