PHOTOCATALYTIC ACTIVITY THAT SYNTHESIZED BY DERIVATIVES IMMIDAZOLIUM IONIC LIQUID FOR HUMIC ACID DEGRADATION
<p align="justify">Titanium oxide or titania is oxide of titanium that common used as photocatalyst. The advantages of titania is a good optical properties, non toxic and high photocatalytic activity. TiO2 is synthesized by hydrothermal method in autoclave that give high photocatalyt...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/30521 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | <p align="justify">Titanium oxide or titania is oxide of titanium that common used as photocatalyst. The advantages of titania is a good optical properties, non toxic and high photocatalytic activity. TiO2 is synthesized by hydrothermal method in autoclave that give high photocatalytic activity. TiO2 is consist of three amorphous, that is rutile, brookite and anatase. Anatase has higher photocatalytic activity than rutile and brookite that are in metastabil condition caused by higher surface area than brookite and rutile. Crystal of anatase by a small size and high surface area can be resulted by solvent modification that is by using ionic liquid. The solvent that used in TiO2 synthesis is the mixture of water and immidazolium derivatives of ionic liquid like 1-butyl-3-methylimmidazolium chloride (BMIM-Cl), 1-butyl-3-methylimmidazolium tetrafluoroborate (BMIM-BF4) and 1-butyl-3-methylimmidazolium salicylate (BMIM-salisilat). TiO2 is characterized by XRD, UV-Vis DRD, BET, SEM and TEM. Ionic liquid is characterized by NMR. By XRD, TiO2 that synthesized by water : BMIM-BF4 (3:7v/v) has highest crystalinity then water : BMIM-Cl (3:7v/v), synthesized by water and water:BMIM-salisilat (3:7v/v). By UV-Vis DRS, TiO2 that synthesized by different solvents has a various band gap. TiO2 that synthesized by water : BMIM-BF4 (3:7v/v) has smallest band gap then BMIM-Cl (3:7v/v), synthesized by water and water:BMIM-salisilat (3:7v/v). Characterization by BET is used to determine surface area, pore size and pore volume. High photocatalytic is determined by a large surface area, a big pore size and pore volume of TiO2. TiO2 that synthesized by water : BMIM-BF4 (3:7v/v) has the largest surface area, the biggest pore size and volume, then water: BMIM-Cl (3:7v/v) and water:BMIM-salisilat (3:7v/v). Titania is used as photocatalyst for humic acid degradation. TiO2 that synthesized by water : BMIM-BF4 (3:7v/v) has 89,15% degradation then water: BMIM-Cl (3:7v/v) is about 83,45% degradation, water 67,19% and water:BMIM-salisilat (3:7 v/v) is about 64,68%.<p align="justify"> <br />
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