用于海水微生物燃料電池原位監(jiān)測的新型伏安式pH傳感器

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開放科學(xué)（資源服務(wù)）標(biāo)志碼（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 李一葦，等：氫鍵網(wǎng)絡(luò)調(diào)控的伏安式pH傳感器用于海水微生物燃料電池原位監(jiān)測

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

面對化石燃料持續(xù)枯竭、氣候變化和污染物排放等挑戰(zhàn)，全球?qū)G色能源和無毒廢物處理技術(shù)的需求日益迫切。（剩余17870字）