SINTESIS SILIKA MESOPORI DENGAN CETAKAN GELATIN TULANG SAPI DAN KAPASITAS ADSORPSINYA TERHADAP METILEN BIRU
Synthesis of mesoporous silica using gelatin template of bovine bones has been studied. Pretreatment with different combination of acid and/or base (HCl, HCl and NaOH, HCl-NaOH-acetic acid, HCl-NaOH-citric acid, HCl-KOH, HClKOH- acetic acid, and HCl-KOH-citric acid) were used before extract the g...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/133915/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=74821 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | Synthesis of mesoporous silica using gelatin template of bovine bones has
been studied. Pretreatment with different combination of acid and/or base (HCl,
HCl and NaOH, HCl-NaOH-acetic acid, HCl-NaOH-citric acid, HCl-KOH, HClKOH- acetic acid, and HCl-KOH-citric acid) were used before extract the gelatin
to determine their effects on characteristic of bovine bone gelatin. The results of
Fourier transform infrared spectroscopy (FTIR) characterization showed the
functional region of gelatin molecule with the vibration peak at wave numbers of
3448-3325 cm
-1
belong to the amide A, 2931-2368 cm
-1
belong to the amide B,
1658-1635 cm
-1
belong to the amide I, 1550-1327 cm
-1
belong to the amide II, and
1242-509 cm
-1
belong to the amide III. Sodium Dodecyl Sulfate-Polyacrylamide
Gel Electrophoresis (SDS-PAGE) analysis showed that all pretreatment process of
bovine bones have alpha component of gelatin with molecular weight distribution
at 120-160 kDa, except pretreatment with KOH and citric acid. The utilization of
KOH and citric acid caused a significant amount of swelling of bovine bones
pretreatment, related to further breakage of polypeptide chains to sub alpha chain
with low molecular weight (<100 kDa). The gelatin of bovine bones with HCl
pretreatment was used as a template to synthesize mesoporous silica with the
gelatin/silica weight ratio 0.5 and 2.0 for sample 1 and 2. The mesoporous silica
with surface area 362.878 m
2
/g and pore size about 7.048 nm were synthesized.
The surface area increased with the increase of the gelatin/silica weight ratio. On
the other hand, pore size and volume did not significantly influenced by the
gelatin/silica weight ratio. The adsorption behavior of mesoporous silica towards
methylene blue were consistent with the Langmuir and Freundlich models. The
equilibrium of the adsorption process on sample 1 and 2 were achieved in 6 and 9
min, respectively. The adsorption capacities increases with increasing the
homogenity of pore size distribution. |
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