%A  1217011005 ANA MARIA KRISTIANI 
%T STUDI PENDAHULUAN UJI AKTIVITAS NANOKATALIS
Ni0,8Fe2Mo0,2O4 UNTUK FOTODEGRADASI REMAZOL GOLDEN
YELLOW
%X 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 ?maks 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
%C UNIVERSITAS LAMPUNG
%D 2016
%I FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM
%L eprints24702