Pengaruh Variasi Kecepatan Stiring & Temperatur Sintering Terhadap Perubahan Struktur Mikro & Fase Material Sensor Gas Tio2

Della Dewi Ratnasari, h Purwaningsih
Submission Date: 2014-02-10 13:31:31
Accepted Date: 2014-03-14 00:00:00

Abstract


Penelitian material untuk sensor gas ini menggunakan bahan dasar TiO2 dan zat pelarut H2SO4 pekat 98% . Metode pembentuk sol-gel dilakukan dengan sampel di stiring menggunakan magnetic stirrer selama 2,5 jam, kecepatan 600, 700 dan 800 rpm dengan temperatur 200 º C hingga terbentuk gel. Drying dilakukan selama 1 jam dengan temperatur 350 º C, proses kalsinasi selama 1 jam temperatur 500 ºC. Proses selanjutnya serbuk TiO2 dikompaksi dengan tekanan 200 bar agar terbentuk padatan / pellet. Sintering dilakukan pada temperatur 700 ºC selama 1 jam. Karakterisasi material dilakukan dengan alat uji Scanning Electron microscope (SEM) dan X-ray diffraction (XRD) untuk menganalisa perubahan struktur mikro & fase material keramik TiO2. Berdasarkan hasil pengujian difraksi sinar–x (XRD), variasi stiring 600 rpm, 700 rpm & 800 rpm telah merubah fase anatase (raw material) menjadi unstabil fase orthohombik (TiOSO4). Sintering pada temperatur 700 ͦ C telah menyebabkan unstabil fase TiOSO4 menjadi stabil fase TiO2 anatase. Sintesa sol-gel stiring 700 rpm dan 800 rpm dilanjutkan sintering 700 ͦ C menyebabkan reduksi kation Titanium. Berdasarkan hasil SEM, proses sol-gel dapat mereduksi raw material menjadi 130 nm pada kecepatan stiring 700 rpm temperatur operasi 200 ͦ C selama 150 menit.

Keywords


sensor gas TiO2; sol-gel; sintering; stiring; SEM; XRD

Full Text: PDF

CC Licencing


Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

Refbacks

  • There are currently no refbacks.


Creative Commons License
Jurnal Teknik ITS by Direktorat Riset dan Pengabdian Masyarakat (DRPM) ITS is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Based on a work at https://ejurnal.its.ac.id/index.php/teknik.
Statistik Pengunjung 22crown login