公开(公告)号：US20230039427A1

公开(公告)日：2023-02-09

申请号：US17883553

申请日：2022-08-08

申请人： Battelle Memorial Institute

发明人： Ki-Joong Kim ,  Jeffrey T. Culp ,  James E. Ellis

IPC分类号： G02B6/02 ,  G01N21/59 ,  C03C13/04 ,  C09D183/04 ,  C09D7/61 ,  C03C25/106 ,  C03C25/47 ,  C03C25/42 ,  C03C25/40

摘要： Novel chemical sensors that improve detection and quantification of CO2 are critical to ensuring safe and cost-effective monitoring of carbon storage sites. Fiber optic (FO) based chemical sensor systems are promising field-deployable systems for real-time monitoring of CO2 in geological formations for long-range distributed sensing. In this work, a mixed-matrix composite integrated FO sensor system was developed that reliably operates as a detector for gas-phase and dissolved CO2. A mixed-matrix composite sensor coating on the FO sensor comprising plasmonic nanocrystals and zeolite embedded in a polymer matrix. The mixed-matrix composite FO sensor showed excellent reversibility/stability in a high humidity environment and sensitivity to gas-phase CO2 over a large concentration range. The sensor exhibited the ability to sense CO2 in the presence of other geologically relevant gases, which is of importance for applications in geological formations. A prototype FO sensor configuration which possesses a robust sensing capability for monitoring dissolved CO2 in natural water was demonstrated. Reproducibility was confirmed over many cycles, both in a laboratory setting and in the field.