Journal Pre-proof Role of Titanium Dioxide (TiO 2 ) Structural Design/Morphology in Photocatalytic Air Purification Alireza Haghighat Mamaghani (Conceptualization) (Methodology) (Validation) (Investigation) (Writing - original draft) (Visualization), Fariborz Haghighat (Investigation) (Writing - review and editing) (Supervision) (Funding acquisition), Chang-Seo Lee (Writing - review and editing) (Supervision) PII: S0926-3373(20)30150-8 DOI: https://doi.org/10.1016/j.apcatb.2020.118735 Reference: APCATB 118735 To appear in: Applied Catalysis B: Environmental Received Date: 26 November 2019 Revised Date: 30 January 2020 Accepted Date: 7 February 2020 Please cite this article as: Mamaghani AH, Haghighat F, Lee C-Seo, Role of Titanium Dioxide (TiO 2 ) Structural Design/Morphology in Photocatalytic Air Purification, Applied Catalysis B: Environmental (2020), doi: https://doi.org/10.1016/j.apcatb.2020.118735 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier.