{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,14]],"date-time":"2026-03-14T21:58:50Z","timestamp":1773525530246,"version":"3.50.1"},"reference-count":86,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2023,1,10]],"date-time":"2023-01-10T00:00:00Z","timestamp":1673308800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002322","name":"CAPES (COORDENA\u00c7\u00c3O DE APERFEI\u00c7OAMENTO DE PESSOAL DE N\u00cdVEL SUPERIOR)","doi-asserted-by":"publisher","award":["88887.702359\/2022-00"],"award-info":[{"award-number":["88887.702359\/2022-00"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002322","name":"CAPES (COORDENA\u00c7\u00c3O DE APERFEI\u00c7OAMENTO DE PESSOAL DE N\u00cdVEL SUPERIOR)","doi-asserted-by":"publisher","award":["UIDB\/04625\/2020"],"award-info":[{"award-number":["UIDB\/04625\/2020"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]},{"name":"CNPq (CONSELHO NACIONAL DE DESENVOLVIMENTO CIENT\u00cdFICO E TECNOL\u00d3GICO)","award":["88887.702359\/2022-00"],"award-info":[{"award-number":["88887.702359\/2022-00"]}]},{"name":"CNPq (CONSELHO NACIONAL DE DESENVOLVIMENTO CIENT\u00cdFICO E TECNOL\u00d3GICO)","award":["UIDB\/04625\/2020"],"award-info":[{"award-number":["UIDB\/04625\/2020"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["88887.702359\/2022-00"],"award-info":[{"award-number":["88887.702359\/2022-00"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["UIDB\/04625\/2020"],"award-info":[{"award-number":["UIDB\/04625\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Buildings"],"abstract":"<jats:p>Due to the urgent need for a more sustainable built environment and actions against climate change, this paper presents a literature review about photocatalytic TiO2-based thin layers to be applied on mortars in facades. Photocatalysis may be a potential strategy against current environmental and climate challenges by transforming or eliminating hazardous greenhouse gases from the atmosphere. The main subjects researched were the coatings\u2019 efficiency (which encompassed their self-cleaning ability, depolluting effect, and antimicrobial properties), durability, and sustainability. The method was based on the systematic literature review approach. Self-cleaning ability was the most recurrent topic retrieved from published studies, followed by depolluting effect and durability. There are few investigations about antimicrobial properties considering TiO2-coated mortars in facades. However, sustainability studies through Life Cycle Assessment and Life Cycle Costing represented the most significant gap, even requiring broader surveys. The photocatalytic activity of the coatings is well-proven in the literature, although specific evaluations may be needed for each coating composition and testing condition to understand their performance. The type of contamination agents, TiO2 dispersion and characteristics, dopants, nanocomposites, and substrate are among the principal agents influencing the results; therefore, caution must be taken when comparing research. Mainly, adhesion and photocatalytic efficiency after ageing were studied on durability. More field exposures may be recommended. Regarding the trade-offs concerning the environmental impacts of TiO2-based coatings, it is urgent to clarify whether their overall outcome is indeed advantageous and to investigate their resilience regarding climate change scenarios.<\/jats:p>","DOI":"10.3390\/buildings13010186","type":"journal-article","created":{"date-parts":[[2023,1,11]],"date-time":"2023-01-11T02:06:03Z","timestamp":1673402763000},"page":"186","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["Photocatalytic TiO2-Based Coatings for Mortars on Facades: A Review of Efficiency, Durability, and Sustainability"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9287-6170","authenticated-orcid":false,"given":"J\u00e9ssica D.","family":"Bersch","sequence":"first","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Engenharia Civil: Constru\u00e7\u00e3o e Infraestrutura (PPGCI), N\u00facleo Orientado para a Inova\u00e7\u00e3o da Edifica\u00e7\u00e3o (NORIE), Universidade Federal do Rio Grande do Sul (UFRGS), Av. Osvaldo Aranha, 99, 7th floor, Porto Alegre 90035-190, RS, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4038-6748","authenticated-orcid":false,"given":"In\u00eas","family":"Flores-Colen","sequence":"additional","affiliation":[{"name":"CERIS, Deptartament of Civil Engineering, Architecture and Georesources, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal"}]},{"given":"Angela B.","family":"Masuero","sequence":"additional","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Engenharia Civil: Constru\u00e7\u00e3o e Infraestrutura (PPGCI), N\u00facleo Orientado para a Inova\u00e7\u00e3o da Edifica\u00e7\u00e3o (NORIE), Universidade Federal do Rio Grande do Sul (UFRGS), Av. Osvaldo Aranha, 99, 7th floor, Porto Alegre 90035-190, RS, Brazil"}]},{"given":"Denise C. C.","family":"Dal Molin","sequence":"additional","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Engenharia Civil: Constru\u00e7\u00e3o e Infraestrutura (PPGCI), N\u00facleo Orientado para a Inova\u00e7\u00e3o da Edifica\u00e7\u00e3o (NORIE), Universidade Federal do Rio Grande do Sul (UFRGS), Av. Osvaldo Aranha, 99, 7th floor, Porto Alegre 90035-190, RS, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Castro-Hoyos, A.M., Manzano, M.A.R., and Maury-Ram\u00edrez, A. (2022). Challenges and Opportunities of Using Titanium Dioxide Photocatalysis on Cement-Based Materials. 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