Zeolite modified electrode telah berhasil disintesis dan diaplikasikan sebagaisensor gas amonia. Pertama-tama, kuarsa dilapisi dengan lem perak dan emasguna meningkatkan sifat perekat antara kuarsa dan zeolit. Zeolit ZSM-5 dan NaYkemudian secara berturut-turut dilapisi di atas permukaan kuarsa dengan metodespin coating. Modifikasi kation logam Cu2 dilakukan dengan teknik ion exchangedalam rangka meningkatkan sensitivitas sensor. Komposit hibrida zeolit diujisebagai sensor gas amonia diukur dengan Electrochemical ImpedanceSpectroscopy EIS pada rentang frekuensi 1 MHz hingga 100 Hz untuk rentangkonsentrasi amonia dari 0-500 ppm. Cu/NaY/ZSM-5/IDC bekerja secara optimalpada frekuensi 100 Hz dengan R2 = 0,9696. Keberadaan uap air dan gas karbondioksida meningkatkan nilai konduktivitas material, tetapi tidak memberikanpengaruh yang berarti terhadap sensitivitas sensor. Dengan demikian, dapatdisimpulkan bahwa komposit hibrida zeolit memiliki sensitivitas yang baiksebagai sensor amonia pada lingkungan sekitar.

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Zeolite modified electrode has been successfully synthesized and applied asammonia gas sensor. First, quartz was coated with silver glue and gold Au forincreasing adhesive properties between quartz and zeolites. Each of ZSM 5 zeoliteand NaY zeolite was coated on the surface of the quartz by spin coating method.Modification with metal cation Cu2 was carried out by using ion exchangetechnique, in order to improve the sensitivity of the sensor. Zeolite hybridcomposite was tested as ammonia gas sensor using Electrochemical ImpedanceSpectroscopy EIS in the frequency range of 1 MHz to 100 Hz with ammoniaconcentration range between 0 500 ppm. Cu NaY ZSM 5 IDC worked optimallyat the frequency of 100 Hz with R2 0.9696. The presence of water vapor andcarbon dioxide gas increases the conductivity of the material, but it has nosignificant effect to the sensitivity of the sensor. Thus, it can be concluded thatzeolite hybrid composite has sensitivity as a good ammonia gas sensor in theambient environment.