On the Role of NaCl Addition to Phase Transformation of TiO2 from TiCl3

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Phase transformation of TiO2 (titanium dioxide) nanoparticles has been analyzed by observing the effect of NaCl addition to the anatase-to-rutile phase transformation. NaCl is one of key points in the transformation of rutile. Co-precipitation method was employed in which TiCl3 as precursor was reacted with HCl 2M and subsequent NH4OH. Three methods were studied, namely solution without NaCl addition (TiCl3 + HCl + NH4OH) as control solution subjected to route A (TiCl3 + HCl – NaCl– NH4OH – heated at 600°C for 5 hours) and route B (TiCl3 + NaCl – heated 200°C for 5 hours – NH4OH – heated 200°C for 6 hours). Route B was subjected to heating at 200°C. The results show that without NaCl it enhanced the crystal growth of the rutile embryos allowing the ease of rutile formation at 600°C, while route A promoted the transformation of brookite and hindered anatase-to-rutile transformation as indicated by the presence of anatase at 1000°C. On the other hand route B is potential for being further explored.

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Edited by:

Ferry Iskandar, Satria Zulkarnaen Bisri, Prof. Mikrajuddin Abdullah, Prof. Khairurrijal and Prof. Kikuo Okuyama

Pages:

313-316

Citation:

I. E. Putri et al., "On the Role of NaCl Addition to Phase Transformation of TiO2 from TiCl3", Advanced Materials Research, Vol. 1112, pp. 313-316, 2015

Online since:

July 2015

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$38.00

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