Synthesis of mesoporous silica from geothermal water
Abstract Mesoporous silica was successfully synthesized for the first time using geothermal water from the Onuma Geothermal Power Plant, Akita Prefecture, Japan. Cetyltrimethylammonium bromide (CTAB) was used as an organic template for the synthesis. CTAB with a concentration of 2.4 × 10–4 mol/L was...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-12-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-03133-x |
| _version_ | 1818426465707884544 |
|---|---|
| author | Yujiro Watanabe Naoki Amitani Takushi Yokoyama Akira Ueda Minoru Kusakabe Shigeko Unami Yoshiji Odashima |
| author_facet | Yujiro Watanabe Naoki Amitani Takushi Yokoyama Akira Ueda Minoru Kusakabe Shigeko Unami Yoshiji Odashima |
| author_sort | Yujiro Watanabe |
| collection | DOAJ |
| description | Abstract Mesoporous silica was successfully synthesized for the first time using geothermal water from the Onuma Geothermal Power Plant, Akita Prefecture, Japan. Cetyltrimethylammonium bromide (CTAB) was used as an organic template for the synthesis. CTAB with a concentration of 2.4 × 10–4 mol/L was reacted for 30 min with geothermal water at a temperature of 90 °C, which had a total silicic acid concentration of 475 mg/L (SiO2), at pH 7.0, pH 8.2 (raw water) and pH 9.0. By calcination of the resulting precipitate at 550 °C, mesoporous silica with a pore size of about 2.8 nm and a specific surface area of > 800 m2/g was formed. The total silicic acid concentration in the solution after formation of the mesoporous precipitates was reduced to < 280 mg/L, indicating efficient recovery of supersaturated silicic acid from geothermal water. The monosilicic acid in geothermal water plays an important role in the formation of mesoporous silica. Production of mesoporous silica by our method will contribute not only to prevention of silica scale formation in the piping systems of geothermal power plants but also to its use as an industrial resource. |
| first_indexed | 2024-12-14T14:30:16Z |
| format | Article |
| id | doaj.art-e1a5a3bd2b0d428bb704a53e426448dc |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T14:30:16Z |
| publishDate | 2021-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-e1a5a3bd2b0d428bb704a53e426448dc2022-12-21T22:57:50ZengNature PortfolioScientific Reports2045-23222021-12-011111910.1038/s41598-021-03133-xSynthesis of mesoporous silica from geothermal waterYujiro Watanabe0Naoki Amitani1Takushi Yokoyama2Akira Ueda3Minoru Kusakabe4Shigeko Unami5Yoshiji Odashima6Faculty of Bioscience and Applied Chemistry, Hosei UniversityFaculty of Bioscience and Applied Chemistry, Hosei UniversityFaculty of Science, Kyushu UniversityFaculty of Science, University of Toyama, ToyamaFaculty of Science, University of Toyama, ToyamaFaculty of Science, University of Toyama, ToyamaFaculty of Science, University of Toyama, ToyamaAbstract Mesoporous silica was successfully synthesized for the first time using geothermal water from the Onuma Geothermal Power Plant, Akita Prefecture, Japan. Cetyltrimethylammonium bromide (CTAB) was used as an organic template for the synthesis. CTAB with a concentration of 2.4 × 10–4 mol/L was reacted for 30 min with geothermal water at a temperature of 90 °C, which had a total silicic acid concentration of 475 mg/L (SiO2), at pH 7.0, pH 8.2 (raw water) and pH 9.0. By calcination of the resulting precipitate at 550 °C, mesoporous silica with a pore size of about 2.8 nm and a specific surface area of > 800 m2/g was formed. The total silicic acid concentration in the solution after formation of the mesoporous precipitates was reduced to < 280 mg/L, indicating efficient recovery of supersaturated silicic acid from geothermal water. The monosilicic acid in geothermal water plays an important role in the formation of mesoporous silica. Production of mesoporous silica by our method will contribute not only to prevention of silica scale formation in the piping systems of geothermal power plants but also to its use as an industrial resource.https://doi.org/10.1038/s41598-021-03133-x |
| spellingShingle | Yujiro Watanabe Naoki Amitani Takushi Yokoyama Akira Ueda Minoru Kusakabe Shigeko Unami Yoshiji Odashima Synthesis of mesoporous silica from geothermal water Scientific Reports |
| title | Synthesis of mesoporous silica from geothermal water |
| title_full | Synthesis of mesoporous silica from geothermal water |
| title_fullStr | Synthesis of mesoporous silica from geothermal water |
| title_full_unstemmed | Synthesis of mesoporous silica from geothermal water |
| title_short | Synthesis of mesoporous silica from geothermal water |
| title_sort | synthesis of mesoporous silica from geothermal water |
| url | https://doi.org/10.1038/s41598-021-03133-x |
| work_keys_str_mv | AT yujirowatanabe synthesisofmesoporoussilicafromgeothermalwater AT naokiamitani synthesisofmesoporoussilicafromgeothermalwater AT takushiyokoyama synthesisofmesoporoussilicafromgeothermalwater AT akiraueda synthesisofmesoporoussilicafromgeothermalwater AT minorukusakabe synthesisofmesoporoussilicafromgeothermalwater AT shigekounami synthesisofmesoporoussilicafromgeothermalwater AT yoshijiodashima synthesisofmesoporoussilicafromgeothermalwater |