[ABSTRAK Indonesia memiliki banyak sumber daya alam ilmenit yang dapatdimanfaatkan lebih lanjut menjadi material mesopori Fe2O3 TiO2. Materialmesopori dengan dinding (wall) yang tersusun atas nano-kristalin TiO2 adalahkandidat yang sangat menjanjikan dalam memberikan sumbangan yang sangatsignifikan untuk mengatasi permasalahan lingkungan dan krisis energi yangmelanda dunia. Namun demikian, hingga sekarang ini masih sulit untukmemperoleh kombinasi sinergis dua hal utama yaitu susunan pori yang teratur(highly-oriented) dan tingkat kristalinitas yang tinggi.Penelitian ini bertujuan untuk mensintesis mesopori Fe2O3 TiO2 darimineral ilmenit (FeTiO3) untuk aplikasi pemurnian air limbah dan pembuatanprototipe DSSC. Metode yang digunakan dalam penelitian adalah kombinasiteknik hidrotermal dan sol−gel. Tahapan proses adalah mineral ilmenit yang telahdihaluskan dilakukan proses dekomposisi dengan larutan basa dalam autoklafkemudian dilanjutkan dengan proses pelindian menggunakan asam sulfat. LarutanTiOSO4 yang dihasilkan digunakan sebagai prekursor dalam mempersiapkannanopartikel TiO2 atau material mesopori Fe2O3 TiO2. Pengontrolan dalamproses sol−gel dilakukan dengan penambahan Fe, dextrin dan triblock copolimer.Hasil penelitian dikarakterisasi menggunakan XRF, AAS, TEM/SEM, BET,XRD, DRS, UV Vis.Hasil penelitian memberikan gambaran tentang potensi yang besarterhadap ilmenit Bangka untuk dimanfaatkan sebagai bahan baku dalampembuatan material mesopori Fe2O3 TiO2. Ilmenit terdekomposisi dengan pelarutbasa (KOH dan NaOH) membentuk fase intermediet yaitu kalium titanat dannatrium titanat dengan morfologi yang berbentuk benang-benang halus.Penambahan bubuk Fe dan dextrin mampu mengontrol pembentukan nanopartikeldan meningkatkan kemurnian TiO2. Penelitian ini juga berhasil mempersiapkanmesopori Fe2O3 TiO2 yang digolongkan sebagai bidang kristal anatase maupunrutil dengan ukuran kristal rata-rata berkisar 5 -7 nm, energi band gab berkisar3,00 ? 3,16 eV dan luas permukaan, SBET berkisar.100 ? 151 m2/g.; ABSTRACT Indonesia has many natural resources including ilmenite which could beexploited further into mesoporous TiO2 Fe2O3 materials. Mesoporous materialswith walls composed of nano-crystalline TiO2 are very promising candidate in avery significant contribution for solving environmental problems and energy crisisthat hit in the world. However, until now it is still difficult to obtain a synergisticcombination of two major things that the regular arrangement of pores (highlyoriented)and a high degree of crystallinity.This study aims to synthesize mesoporous TiO2 Fe2O3 of the ilmenite(FeTiO3) mineral for waste water purification applications and prototyping DSSC.The method used in the study is a combination of hydrothermal and sol-geltechniques. Stage of the process was ilmenite mineral which has been smoothedcarried out the decomposition process using alkaline solution in the autoclave andthen followed by a leaching process using sulfuric acid. The TiOSO4 solutionobtained was used as a precursor in the preparation of TiO2 nanoparticles ormesoporous TiO2 Fe2O3 material. Controlling the sol-gel process was done withthe addition of Fe, dextrin and triblock copolimer. The results of the study werecharacterized using XRF, AAS, TEM/SEM, BET, XRD, DRS, UV-Vis apparatus.The results of the study provided an overview of the enormous potential ofthe Bangka-Indonesia ilmenite to be used as raw material in the manufacture ofmesoporous TiO2 Fe2O3 materials. Ilmenite decomposed by alkaline solvent(KOH and NaOH) formed the intermediate phase of potassium titanate andsodium titanate with morphology shaped by fine threads. The addition of Fepowder and dextrin were able to control the formation nanoparticles and increasethe purity of TiO2. This study also succeeded in preparing mesoporousTiO2 Fe2O3 classified as anatase and rutile crystal planes with an average crystalsize ranges from 5 to 7 nm, the band gap energy ranges from 3.00 to 3.16 eV andthe surface area (SBET) ranges from 100 to 151 m2/g.;Indonesia has many natural resources including ilmenite which could beexploited further into mesoporous TiO2 Fe2O3 materials. Mesoporous materialswith walls composed of nano-crystalline TiO2 are very promising candidate in avery significant contribution for solving environmental problems and energy crisisthat hit in the world. However, until now it is still difficult to obtain a synergisticcombination of two major things that the regular arrangement of pores (highlyoriented)and a high degree of crystallinity.This study aims to synthesize mesoporous TiO2 Fe2O3 of the ilmenite(FeTiO3) mineral for waste water purification applications and prototyping DSSC.The method used in the study is a combination of hydrothermal and sol-geltechniques. Stage of the process was ilmenite mineral which has been smoothedcarried out the decomposition process using alkaline solution in the autoclave andthen followed by a leaching process using sulfuric acid. The TiOSO4 solutionobtained was used as a precursor in the preparation of TiO2 nanoparticles ormesoporous TiO2 Fe2O3 material. Controlling the sol-gel process was done withthe addition of Fe, dextrin and triblock copolimer. The results of the study werecharacterized using XRF, AAS, TEM/SEM, BET, XRD, DRS, UV-Vis apparatus.The results of the study provided an overview of the enormous potential ofthe Bangka-Indonesia ilmenite to be used as raw material in the manufacture ofmesoporous TiO2 Fe2O3 materials. Ilmenite decomposed by alkaline solvent(KOH and NaOH) formed the intermediate phase of potassium titanate andsodium titanate with morphology shaped by fine threads. The addition of Fepowder and dextrin were able to control the formation nanoparticles and increasethe purity of TiO2. This study also succeeded in preparing mesoporousTiO2 Fe2O3 classified as anatase and rutile crystal planes with an average crystalsize ranges from 5 to 7 nm, the band gap energy ranges from 3.00 to 3.16 eV andthe surface area (SBET) ranges from 100 to 151 m2/g.;Indonesia has many natural resources including ilmenite which could beexploited further into mesoporous TiO2 Fe2O3 materials. Mesoporous materialswith walls composed of nano-crystalline TiO2 are very promising candidate in avery significant contribution for solving environmental problems and energy crisisthat hit in the world. However, until now it is still difficult to obtain a synergisticcombination of two major things that the regular arrangement of pores (highlyoriented)and a high degree of crystallinity.This study aims to synthesize mesoporous TiO2 Fe2O3 of the ilmenite(FeTiO3) mineral for waste water purification applications and prototyping DSSC.The method used in the study is a combination of hydrothermal and sol-geltechniques. Stage of the process was ilmenite mineral which has been smoothedcarried out the decomposition process using alkaline solution in the autoclave andthen followed by a leaching process using sulfuric acid. The TiOSO4 solutionobtained was used as a precursor in the preparation of TiO2 nanoparticles ormesoporous TiO2 Fe2O3 material. Controlling the sol-gel process was done withthe addition of Fe, dextrin and triblock copolimer. The results of the study werecharacterized using XRF, AAS, TEM/SEM, BET, XRD, DRS, UV-Vis apparatus.The results of the study provided an overview of the enormous potential ofthe Bangka-Indonesia ilmenite to be used as raw material in the manufacture ofmesoporous TiO2 Fe2O3 materials. Ilmenite decomposed by alkaline solvent(KOH and NaOH) formed the intermediate phase of potassium titanate andsodium titanate with morphology shaped by fine threads. The addition of Fepowder and dextrin were able to control the formation nanoparticles and increasethe purity of TiO2. This study also succeeded in preparing mesoporousTiO2 Fe2O3 classified as anatase and rutile crystal planes with an average crystalsize ranges from 5 to 7 nm, the band gap energy ranges from 3.00 to 3.16 eV andthe surface area (SBET) ranges from 100 to 151 m2/g., Indonesia has many natural resources including ilmenite which could beexploited further into mesoporous TiO2 Fe2O3 materials. Mesoporous materialswith walls composed of nano-crystalline TiO2 are very promising candidate in avery significant contribution for solving environmental problems and energy crisisthat hit in the world. However, until now it is still difficult to obtain a synergisticcombination of two major things that the regular arrangement of pores (highlyoriented)and a high degree of crystallinity.This study aims to synthesize mesoporous TiO2 Fe2O3 of the ilmenite(FeTiO3) mineral for waste water purification applications and prototyping DSSC.The method used in the study is a combination of hydrothermal and sol-geltechniques. Stage of the process was ilmenite mineral which has been smoothedcarried out the decomposition process using alkaline solution in the autoclave andthen followed by a leaching process using sulfuric acid. The TiOSO4 solutionobtained was used as a precursor in the preparation of TiO2 nanoparticles ormesoporous TiO2 Fe2O3 material. Controlling the sol-gel process was done withthe addition of Fe, dextrin and triblock copolimer. The results of the study werecharacterized using XRF, AAS, TEM/SEM, BET, XRD, DRS, UV-Vis apparatus.The results of the study provided an overview of the enormous potential ofthe Bangka-Indonesia ilmenite to be used as raw material in the manufacture ofmesoporous TiO2 Fe2O3 materials. Ilmenite decomposed by alkaline solvent(KOH and NaOH) formed the intermediate phase of potassium titanate andsodium titanate with morphology shaped by fine threads. The addition of Fepowder and dextrin were able to control the formation nanoparticles and increasethe purity of TiO2. This study also succeeded in preparing mesoporousTiO2 Fe2O3 classified as anatase and rutile crystal planes with an average crystalsize ranges from 5 to 7 nm, the band gap energy ranges from 3.00 to 3.16 eV andthe surface area (SBET) ranges from 100 to 151 m2/g.] |