Dear Ravi,

The recent review article covers the answer to your question:

Three-Dimensional Titanium Dioxide Nanomaterials

Dina Fattakhova-Rohlfing*†, Adriana Zaleska‡, and Thomas Bein*†

† Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU), Butenandtstrasse 5-13 (E), 81377 Munich, Germany

‡ Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland

Chem. Rev., 2014, 114 (19), pp 9487–9558

DOI: 10.1021/cr500201c

Publication Date (Web): August 19, 2014

http://pubs.acs.org/doi/full/10.1021/cr500201c

Hoping this will be helpful,

Rafik