Controlling the nanostructural characteristics of TiO2 nanoparticles derived from ilmenite mineral of Bangka island through sulfuric acid route

Latifa Hanum Lalasari, Akhmad Herman Yuwono, F. Firdiyono, Nurul Taufiqu Rochman, Sri Harjanto., Bambang Suharno

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Citations (Scopus)

Abstract

The ilmenite mineral (FeO.TiO2) from Bangka Island-Indonesia is an important source for synthesizing TiO2 nanoparticles. However, the process is rather difficult since this mineral still contains many impurities and minor elements. Therefore, controlling the synthesizing route parameters is essential for obtaining the desired TiO2 nanoparticle characteristics. In the current work, we proposed a modified process involving the use of sulfuric acid through sol-gel method to provide titanyl sulfate (TiOSO4) solution as the inorganic precursor. For investigation purposes, several parameters were varied including volume ratio of water and titanyl sulfate, addition of iron powder (seeding) and dextrin coagulant, calcination time and temperature. The results showed that TiO2 nanoparticles can be succesfully synthesized using TiOSO4 precursor derived from Bangka ilmenite. Under all processing conditions, the resulting TiO2 nanoparticles have sphere-like shape and were indexed as the anatase TiO2 phase. The results also showed that the average particle size was reduce from 96 - 188 nm to 32 - 40 nm when the volume ratio of water and titanylsulfate was increased from 3:1 to 6:1. The addition of iron powder as seeding has improved the purity of TiO2 to ~ 95.01 wt%, in comparison to that of without seeding, which is ~92.78 wt%.

Original languageEnglish
Title of host publicationTechnologies of Mechanical Engineering Industry
Pages34-40
Number of pages7
DOIs
Publication statusPublished - 2013
Event2nd International Conference on Advances in Mechanics Engineering, ICAME 2013 - Jakarta, Indonesia
Duration: 13 Jul 201314 Jul 2013

Publication series

NameApplied Mechanics and Materials
Volume391
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2nd International Conference on Advances in Mechanics Engineering, ICAME 2013
Country/TerritoryIndonesia
CityJakarta
Period13/07/1314/07/13

Keywords

  • Dextrin coagulant
  • Ilmenite
  • Iron powder
  • Sulfuric acid
  • Titanium dioxide

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