Alhusna, Muhammad Zaim (2022) Sintesis Fotokatalis Rgo/Ni(Oh)2/Tio2 Untuk Produksi Hidrogen. Other thesis, Institut Teknologi Sepuluh Nopember Surabaya.
Text
02311840000074-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 September 2024. Download (5MB) | Request a copy |
Abstract
Reaksi fotokatalisis dapat dimanfatkan untuk memproduksi gas hidrogen lebih ramah lingkungan. Fotokatalis TiO2 jamak digunakan karena biaya yang relatif murah, stabil dalam larutan air, dan tidak beracun. TiO2 dapat digabungkan Ni(OH)2 dimana Ni(OH)2 banyak diteliti untuk produksi hidrogen karena dapat meningkatkan efisiensi fotokatalitik dengan bekerja sebagai cocatalyst. Pada Ni(OH)2/TiO2 dapat didoping dengan rGO (reduced Graphene Oxide) memiliki konduktivitas dan mobilitas elektron yang tinggi dapat secara efisien mentransfer elektron untuk reaksi permukaan dan dapat bertindak sebagai fotosensitizer untuk memperpanjang penyerapan cahaya. Pada penelitian ini Ni(OH)2/TiO2 disintesis dengan fraksi massa 1:1, 3:1, dan 9:1 yang selanjutnya didoping rGO dengan konsentrasi wt% sebesar 5%, 6.5%, 8.5%, dan 10% pada setiap fraksi massa Ni(OH)2/TiO2. Karakterisasi fotokatalis dilakukan menggunakan teknik XRD, SEM, FTIR, UV-Vis, dan BET. Analsis difraksi sinar-X menunjukkan bahwa sintesis Ni(OH)2/TiO2 membentuk stuktur partikel nanokomposit heterojunction. Ni(OH)2 dan TiO2 memiliki karakteristik pori yang berbeda dan doping rGO meningkatkan lebar spektrum absorbansi didaerah cahaya tampak. Aktivitas fotokatalis Ni(OH)2/TiO2 untuk produksi hidrogen diuji dengan moda LSV (linear sweep voltammetry). Hasil rapat arus fotoelektrokimia terbesar untuk setiap fraksi massa Ni(OH)2/TiO2, yaitu 8.5wt%, 6.5wt%, dan 10wt% rGO berturut-turut untuk fraksi massa Ni(OH)2/TiO2 1:1, 3:1, dan 9:1
======================================================================================================================================
Photocatalytic reactions can be utilized to produce hydrogen gas which is more environmentally friendly. TiO2 photocatalysts are widely used because of their relatively low cost, stability in aqueous solutions, and non-toxicity. TiO2 can be combined with Ni(OH)2 where Ni(OH)2 is widely studied for hydrogen production because it can increase photocatalytic efficiency by working as a cocatalyst. Ni(OH)2/TiO2 can be doped with rGO (reduced Graphene Oxide) which exhibits high conductivity and electron mobility that can efficiently transfer electrons for surface reactions and can act as a photosensitizer to prolong light absorption. In this study Ni(OH)2/TiO2 was synthesized with mass fractions of 1:1, 3:1, and 9:1 which was then doped with rGO with wt% concentrations of 5%, 6.5%, 8.5%, and 10% for each mass fraction of Ni(OH)2/TiO2. Photocatalyst characterization was carried out using XRD, SEM, FTIR, UV-Vis, and BET techniques. X-ray diffraction analysis indicates that the synthesis of Ni(OH)2/TiO2 formed a heterojunction nanocomposite particle structure. Ni(OH)2 and TiO2 have different pore characteristics and rGO doping increases the absorbance obtained. The photocatalytic activity of Ni(OH)2/TiO2 to produce hydrogen was tested using LSV (linear sweep voltammetry) Highest photoelectrochemical current density was obtained at rGO doping concentration of 8.5wt%, 6.5wt%, and 10wt%. rGO for mass fractions of Ni(OH)2/TiO2 1:1, 3:1, and 9:1, respectively
Item Type: | Thesis (Other) |
---|---|
Additional Information: | RSFi 541.395 Alh s-1 |
Uncontrolled Keywords: | Hidrogen, Fotokatalisis, TiO2, Ni(OH)2, rGO, Heterojunction |
Subjects: | Q Science > QD Chemistry > QD716 Photocatalysis. |
Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis |
Depositing User: | EKO BUDI RAHARJO |
Date Deposited: | 10 Jan 2023 07:52 |
Last Modified: | 10 Jan 2023 07:52 |
URI: | http://repository.its.ac.id/id/eprint/95358 |
Actions (login required)
View Item |