Pengembangan Fotokatalis Heterojunction ZnO/NiO Terdoping CNT Untuk Degradasi Limbah Dan Produksi Hidrogen Secara Simultan

Septiawati, Melani (2023) Pengembangan Fotokatalis Heterojunction ZnO/NiO Terdoping CNT Untuk Degradasi Limbah Dan Produksi Hidrogen Secara Simultan. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Proses reaksi fotokatalisis dimanfaatkan dalam degradasi limbah pewarna AZO MO dan produski hidrogen secara simultan. Fotokatalis yang disintesis adalah ZnO/NiO dengan metode kopresispitasi dan hidrotermal. ZnO banyak digunakan sebagai fotokatalis dan NiO digunakan sebagai cocatalyst karena dapat meningkatkan efisiensi fotokatalitik. ZnO/NiO kemudian didoping dengan CNT yang mampu meningkatkan aktivitas fotokatalitik karena menyumbang luas permukaan yang besar. Pada penilitian ini variasi fotokatalis yang disintesis adalah 1:1, 1:3, dan1:9 ZnO/NiO dengan variasi doping CNT 0%, 1%, 1.5%, dan 2% pada setiap fraksi massa ZnO/NiO. Karakterisasi fotokatalis dilakukan dengan menggunakan teknik XRD, SEM, FTIR, UV-Vis, dan BET. Analisis difraksi sinar-X menunjukkan fotokatalis ZnO/NiO membentuk struktur heterojunction semikonduktor tipe II. Analisis BET menunjukkan doping CNT dan penambahan NiO mampu meningkatkan aktivitas fotokatalitik. Aktivitas fotokatalisis untuk uji degradasi limbah dan produksi hidrogen dilakukan menggunakan UV-Vis dan chronoamperometry. Hasil uji degradasi menunjukkan 99% removal MO pada variasi 1:3 ZnO/NiO 1% dan 1.5% CNT. Sedangkan hasil uji produksi hidrogen terbaik adalah 1:3 ZnO/NiO dengan doping CNT sebesar 1% dan 2% yaitu 10.38 μmol/gh dan 9.87 μmol/gh. ==================================================================================================================================
The photocatalytic reaction process is utilized in the degradation of AZO MO dye waste and the production of hydrogen simultaneously. The photocatalyst ZnO/NiO was synthesized by co-precipitation and hydrothermal methods. ZnO is widely used as a phtocatalyst and NiO is used as a cocatalyst because it can increase photocatalytic efficiency. ZnO/NiO is then doped with CNT which is able to increase photocatalytic activity because it contributes a large surface area. In this research, the variations of photocatalysts synthesized were 1:1, 1:3, and 1:9 ZnO/NiO with CNT doping variations of 0%, 1%, 1.5%, and 2% for each ZnO/NiO mass fraction. Photocatalyst characterization was conducted using XRD, SEM, FTIR, UV-Vis, and BET techniques. X-ray diffraction analysis showed that the ZnO/NiO photocatalyst forms a type II semiconductor heterojunction structure. BET analysis showed that CNT doping and addition of NiO increased photocatalytic activity. Photocatalytic activity for waste degradation tests and hydrogen production was conducted using UV-Vis and chronoamperometry. The results of the degradation test showed 99% MO removal at 1:3 ZnO/NiO 1% and 1.5% CNT variations. While the best hydrogen production test results were 1:3 ZnO/NiO with 1% and 2% CNT doping,that is 10.38 μmol/gh and 9.87 μmol/gh.

Item Type:	Thesis (Other)
Additional Information:	RSF 541.395 Sep p-1 2023
Uncontrolled Keywords:	CNT, Hydrogen, Methyl Orange, Photocatalysis, ZnO/NiO
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD430 Water--Purification. T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles. T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Melani Septiawati
Date Deposited:	24 Aug 2023 08:17
Last Modified:	05 Oct 2023 08:10
URI:	http://repository.its.ac.id/id/eprint/101206

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