Characterization of TiO_2 synthesized in alcohol by a sol-gel process: The effects of annealing temperature and acid catalyst
| dc.contributor.author | Sayılkan, Funda | |
| dc.contributor.author | Asiltürk, Meltem | |
| dc.contributor.author | Sayılkan, Hikmet | |
| dc.contributor.author | Önal, Yunus | |
| dc.contributor.author | Akarsu, Murat | |
| dc.contributor.author | Arpaç, Ertuğrul | |
| dc.date.accessioned | 2020-10-19T17:37:08Z | |
| dc.date.available | 2020-10-19T17:37:08Z | |
| dc.date.issued | 2005 | |
| dc.description.abstract | Abstract:The effects of annealing temperature and hydrolysis catalyst on the crystalline form and crystallite size of TiO2 prepared by a sol-gel process were investigated. Three types of TiO2 were synthesized by hydrolysis of titanium(IV)-iso-propoxide with water in n-propanol without catalyst (Type-A) and with HCl as catalyst, where the H+/Ti4+ mol ratio was 0.54 for Type-B and 0.2 for Type-C. Hydrolysis products were thermally treated at 100, 200, 300, 400 and 500 °C for 1 h after drying at room temperature. Characterization of the particles was carried out using XRD, BET, TG/DTA and SEM analysis. The pore size distributions were computed by the DFT plus method. The results showed that the acid catalyst and catalyst/alkoxide ratio have a large effect on the formation of anatase TiO2. In particular, it was found that anatase phase TiO2 particles occur at 400 and 500 °C for Type-A TiO2, while they do so at nearly 200 °C for Type-B and Type-C TiO2. The crystallite size of Type-A, Type-B and Type-C increased from 17.96 to 19.24 nm, from 12.38 to 15.12 nm and from 10.60 to 12.20 nm, respectively, when the thermal treatment temperature was raised from 400 to 500 °C. | en_US |
| dc.identifier.citation | SAYILKAN F,ASİLTÜRK M,SAYILKAN H,ÖNAL Y,AKARSU M,ARPAÇ E (2005). Characterization of $TiO_2$ synthesized in alcohol by a sol-gel process: The effects of annealing temperature and acid catalyst. Turkish Journal of Chemistry, 29(6), 697 - 706. | en_US |
| dc.identifier.uri | https://app.trdizin.gov.tr/makale/TlRBME56ZzQ | |
| dc.identifier.uri | https://hdl.handle.net/11616/18425 | |
| dc.language.iso | en | en_US |
| dc.publisher | Turkish Journal of Chemistry | en_US |
| dc.relation.ispartof | Turkish Journal of Chemistry | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.title | Characterization of TiO_2 synthesized in alcohol by a sol-gel process: The effects of annealing temperature and acid catalyst | en_US |
| dc.type | Article | en_US |
