Accepted Manuscript Subsurface treatment of TiO 2 nanoparticles for limestone: Prolonged surface photocatalytic biocidal activities Simona Veltri, Annamaria Palermo, Giovanni De Filpo, Fang Xu PII: S0360-1323(18)30663-2 DOI: https://doi.org/10.1016/j.buildenv.2018.10.038 Reference: BAE 5768 To appear in: Building and Environment Received Date: 21 September 2018 Revised Date: 9 October 2018 Accepted Date: 21 October 2018 Please cite this article as: Veltri S, Palermo A, De Filpo G, Xu F, Subsurface treatment of TiO 2 nanoparticles for limestone: Prolonged surface photocatalytic biocidal activities, Building and Environment (2018), doi: https://doi.org/10.1016/j.buildenv.2018.10.038. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. 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.