Optimalisasi Sintesis CoO/TiO2 Untuk Aktivitas Fotokatalitik Produksi Hidrogen Melalui Water Splitting

Rafi, Yaqdhan Naufal (2024) Optimalisasi Sintesis CoO/TiO2 Untuk Aktivitas Fotokatalitik Produksi Hidrogen Melalui Water Splitting. Other thesis, Institiut Teknologi Sepuluh Nopember.

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Abstract

Tingginya pencemaran lingkungan yang dihasilkan oleh sumber energi berbasis fosil mendorong pengembangan sumber energi baru dan terbarukan (EBT), salah satunya yaitu hidrogen. Produksi hidrogen melalui water splitting dengan sumber energi matahari dan fotokatalis TiO2 berpotensi untuk dikembangkan karena memiliki stabilitas yang baik dan ramah lingkungan. Namun, TiO2 memiliki kelemahan berupa celah pita yang lebar sehingga membutuhkan energi yang tinggi. Pada riset ini telah dioptimalisasi sintesis TiO2 doping CoO memastikan luas permukaan dan penyerapan cahaya dari material tersebut mengalami peningkatan signifikan. Material fotokatalis telah disintesis dan dikarakterisasi dengan X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), UV-Diffuse Reflectance (UV-DRS) dan Fourier Transform Infrared (FTIR). Dilakukan uji aktivitas fotokatalitik untuk mengetahui produksi hidrogen dengan menggunakan GC-TCD. Digunakan empat variasi TiO2, 0.1% CoO/TiO2, 0.3% CoO/TiO2, dan 0.5% CoO/TiO2. Hasil karakterisasi UV-Vis DRS menunjukkan adanya penurunan celah pita seiring penambahan material CoO. Nilai celah pita terendah diperoleh 2.6771eV. Hasil uji aktivitas fotokatalitik menunjukkan kenaikan produksi hidrogen 0.1% CoO/TiO2 lebih banyak dibandingkan produksi hidrogen menggunakan fotokatalis TiO2.
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The high environmental pollution generated by fossil fuel-based energy sources has driven the development of new and renewable energy sources (NRES), one of which is hydrogen. Hydrogen production through water splitting using solar energy and TiO2 photocatalysts has the potential to be developed due to its good stability and environmental friendliness. However, TiO2 has a drawback, one of which is a wide bandgap that requires high energy input. In this research, the synthesis of TiO2 doped CoO has been optimized to ensure that the surface area and light absorption of the material are significantly increased. The photocatalyst material was synthesized and characterized using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), UV-Diffuse Reflectance (UV-DRS), and Fourier Transform Infrared (FTIR). Photocatalytic activity tests were conducted to determine hydrogen production using GC-TCD. Four variations of TiO2 were used, i.e., Bare TiO2, 0.1% CoO/TiO2, 0.3% CoO/TiO2, and 0.5% CoO/TiO2. The UV-Vis DRS characterization results showed a decrease in the bandgap with the addition of CoO material. The lowest bandgap value obtained was 2.6771 eV. The photocatalytic activity test results showed an increase in hydrogen production using 0.1% CoO/TiO2 compared to hydrogen production using bare TiO2 photocatalyst.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	CoO, Fotokatalis, Hidrogen, TiO2, Water Splitting, Photocatalyst, Hydrogen, TiO2, Water Splitting
Subjects:	Q Science > QD Chemistry > QD716 Photocatalysis.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Yaqdhan Naufal Rafi
Date Deposited:	21 Aug 2024 03:47
Last Modified:	21 Aug 2024 03:47
URI:	http://repository.its.ac.id/id/eprint/112912

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