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Nanocasting the ordered mesoporous carbon based on SBA-15 template and PEG 400

Nanocasting the ordered mesoporous carbon based on SBA-15 template and PEG 400 / Muhamad Hafeedz Iskandar Mohd Alias
Metilena biru telah terkenal dengan kesan negatifnya terhadap alam sekitar di mana ia adalah berbahaya dan ia biasanya ditemui dalam banyak industri yang berkaitan dengan pewarna. Tujuan kajian ini dijalankan adalah untuk mensintesis karbon mesoporous yang tersusun dan tertib, OMC di mana ia digunakan sebagai nanopenjerap untuk penyingkiran metilena biru. Karbon mesoporous tersusun yang disintesis dengan menggunakan SBA-15 sebagai templat dan PEG-400 sebagai pelopor karbon. Oleh kerana itu, proses ini dikategorikan dalam kaedah “hard-templating” atau dikenali sebagai “nanocasting”. Dalam usaha untuk mengkaji kesan pelbagai parameter operasi seperti kandungan PEG-400, masa kediaman dan suhu pengkarbonan pada kapasiti penjerapan metilena biru, eksperimen telah dijalankan. Kepekatan awal metilena biru adalah 100 ppm dengan 1/5 faktor pencairan. Keputusan menunjukkan bahawa keadaan optimum untuk nanocast OMC adalah 5 g kemasukan PEG -400, pada 60 minit masa diam dan pada 800 ° C suhu karbonisasi . Penyingkiran peratusan pada 5g PEG -400, 60 minit masa diam dan 800 ° C suhu karbonisasi adalah yang tertinggi iaitu 95.2248 % berbanding dengan keadaan-keadaan lain. SEM dan TEM menunjukkan bahawa struktur optimum OMC replikasi struktur SBA- 15. BET kawasan permukaan OMC optimum adalah 565.2294m2 / g dan penjerapan purata lebar liang (4V / A oleh BET) adalah 3.68 nm yang dalam pelbagai saiz mesoliang. EDX, FTIR dan XRD juga telah dijalankan untuk menganalisis lagi ciri-ciri sampel OMC yang optimum. _______________________________________________________________________________________________________ Methylene blue has been well known for its negative impact on environment where it is hazardous and it is usually found in a lot of industries that work with dyes. The aim of this study is to synthesize the ordered mesoporous carbon, OMC where it is used as a nanoadsorbent for the methylene blue removal. Ordered mesoporous carbon is synthesized by using SBA-15 as a template and PEG-400 as carbon precursor. Since it use SBA-15 as a template, the process is categorized in a ‘hard-templating’ method or known as ‘nanocasting’. In order to study the effect of various operating parameters such as PEG-400 loading, dwelling time and carbonization temperature on the adsorption capacity of methylene blue, batch sorption experiments were conducted. The initial concentration of methylene blue was 100 ppm with 1/5 dilution factor. The results indicate that the optimum conditions to nanocast OMC were 5 g of PEG-400 loading, at 60 minutes of dwell time and at 800 °C of carbonization temperature. The percentage removal at 5g of PEG-400, 60 minutes of dwell time and 800 °C of carbonization temperature was the highest which was 95.2248 % as compared to the other conditions. SEM and TEM show that the structure of optimum OMC replicates the structure of SBA-15. BET surface area of the optimum OMC was 565.2294m2/g and the adsorption average pore width (4V/A by BET) was 3.68 nm which is in the range of mesopores size. EDX, FTIR and XRD were also been conducted to further analyze the characteristics of the optimum OMC sample.
Contributor(s):
Muhamad Hafeedz Iskandar Mohd Alias - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875006391
Barcode : 00003103734
Language:
English
Subject Keywords:
Methylene blue; negative impact on environment; industries that work with dyes
First presented to the public:
5/1/2016
Original Publication Date:
5/21/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 70
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-05-21 17:05:50.612
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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