STUDI PENDAHULUAN UJI AKTIVITAS NANOKATALIS Ni0,8Fe2Mo0,2O4 UNTUK FOTODEGRADASI REMAZOL GOLDEN YELLOW

ANA MARIA KRISTIANI , 1217011005 (2016) STUDI PENDAHULUAN UJI AKTIVITAS NANOKATALIS Ni0,8Fe2Mo0,2O4 UNTUK FOTODEGRADASI REMAZOL GOLDEN YELLOW. FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM, UNIVERSITAS LAMPUNG.

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Abstrak

Telah dilakukan pembuatan nanokatalis Ni0,8Fe2Mo0,2O4 dengan metode sol-gel menggunakan pektin sebagai agen pengemulsi. Katalis dikalsinasi pada 600oC dan 800oC selama delapan jam, dan kemudian dilakukan uji fotodegradasi remazol golden yellow. Uji fotodegradasi dilakukan dengan bantuan lampu UV dan sinar matahari sumber cahaya. Hasil fotodegradasi diukur absorbansinya pada λmaks 407 nm menggunakan spektrometer UV-Vis. Konsentrasi remazol golden yellow setelah didegradasi menggunakan lampu UV dengan bantuan katalis pada kalsinasi 600oC dan 800oC secara bertutut-turut berkurang sekitar 22 dan 25% dan dengan sinar matahari 18,5 dan 22%. Analisis keasaman katalis pada suhu kalsinasi 600oC memiliki keasaman 6,92 mmol piridin/g katalis dan pada kalsinasi 800oC sebesar 6,03 mmol piridin/g katalis. Karakterisasi dengan XRD dan PSA diperoleh ukuran partikel rata-rata nanokatalis 30,44 nm dengan distribusi ukuran partikel 13 % pada kalsinasi 600oC dan 51,46 nm dengan distribusi ukuran partikel 2% untuk nanokatalis dikalsinasi pada 800oC. Analisis SEM-EDS menunjukkan adanya unsur yaitu O, Fe, Ni dan Mo pada struktur Ni0,8Fe2Mo0,2O4 Kata Kunci: Nanokatalis, Pektin, Fotodegradasi, zat warna abstract Ni0,8Fe2Mo0,2O4 nanocatalyst has been prepared using a sol-gel method. Preparation of the materials was carried out by dissolving nitrate salts of iron and nickel, and hidrates of ammonium molybdate in pectin solution and then the sample was stirred throughly using magnetic stirrer while adjusting pH to 11. After freeze-drying process, the sample was subjected to calcination treatment at 600 and 800oC, respectively, and then characterizated using the techniques of Xray diffraction (XRD), PSA, SEM and UV-Vis spectrophotometer analysis. The result of XRD characterization indicated that material consists of a majority crystalline phase of spinel Ni0,8Fe2Mo0,2O4 for both calcinations. Then, grain size distribution of the nanocatalyst calcined at 600oC using PSA, is 30.44 nm (13%) and calcined at 800oC is 51.46 nm (2%). Acidic properties analysis of catalyst calcined at 600oC and 800oC, respectively, using gravimetric method resulted 6.92 and 6.03 mmol pyridine/g catalyst. Then, SEM analysis proved that Ni0,8Fe2Mo0,2O4 nanocatalyst is formed based on the atomic ratio of O, Fe, Ni, and Mo. Photodegradation experiments for Rhemazol Golden Yellow dye were conducted using UV and Sunlight irradiation, and its performance was evaluated by measuring the absorbance at 407 nm using UV-Vis spectrometer. The experimental result demonstrate that the concentration of the Rhemazol Golden Yellow was reduced into 22 and 25% for catalyst calcined at 600oC, and then 18.5 and 22% for catalyst calcined at 800oC. Keyword: Nanocatalyst, Pectin, Photodegradation, Dye

Tipe Karya Ilmiah: Skripsi
Subyek: Q Science (General)
Q Science (General) > QD Chemistry
Program Studi: Fakultas MIPA > Prodi Kimia
Depositing User: 8669829 . Digilib
Date Deposited: 20 Dec 2016 08:11
Last Modified: 20 Dec 2016 08:11
URI: http://digilib.unila.ac.id/id/eprint/24702

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