{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,26]],"date-time":"2026-01-26T07:43:42Z","timestamp":1769413422421,"version":"3.49.0"},"reference-count":64,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2021,9,14]],"date-time":"2021-09-14T00:00:00Z","timestamp":1631577600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Preventing and controlling the spread of multidrug-resistant (MDR) bacteria implicated in healthcare-associated infections is the greatest challenge of the health systems. In recent decades, research has shown the need for passive antibacterial protection of surfaces in order to reduce the microbial load and microbial biofilm development, frequently associated with transmission of infections. The aim of the present study is to analyze the efficiency of photocatalytic antimicrobial protection methods of surfaces using the new photocatalytic paint activated by light in the visible spectrum. The new composition is characterized by a wide range of analytical methods, such as UV-VIS spectroscopy, electron microscopy (SEM), X-ray powder diffraction (PXRD) or X-ray photoelectron spectroscopy (XPS). The photocatalytic activity in the UV-A was compared with the one in the visible light spectrum using an internal method developed on the basis of DIN 52980: 2008-10 standard and ISO 10678\u20142010 standard. Migration of metal ions in the composition was tested based on SR EN1186-3: 2003 standard. The new photocatalytic antimicrobial method uses a type of photocatalytic paint that is active in the visible spectral range and generates reactive oxygen species with inhibitory effect against all tested microbial strains.<\/jats:p>","DOI":"10.3390\/ma14185307","type":"journal-article","created":{"date-parts":[[2021,9,14]],"date-time":"2021-09-14T23:34:11Z","timestamp":1631662451000},"page":"5307","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Preliminary Study on Light-Activated Antimicrobial Agents as Photocatalytic Method for Protection of Surfaces with Increased Risk of Infections"],"prefix":"10.3390","volume":"14","author":[{"given":"Razvan","family":"Bucuresteanu","sequence":"first","affiliation":[{"name":"Department of Microbiology, Faculty of Biology, University of Bucharest, Intr. Portocalelor no 1-3, 060101 Bucharest, Romania"},{"name":"Faculty of Biology, Research Institute, University of Bucharest, Soseaua Paduri 90-92, 50663 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6593-255X","authenticated-orcid":false,"given":"Lia-Mara","family":"Ditu","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Faculty of Biology, University of Bucharest, Intr. Portocalelor no 1-3, 060101 Bucharest, Romania"},{"name":"Faculty of Biology, Research Institute, University of Bucharest, Soseaua Paduri 90-92, 50663 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Monica","family":"Ionita","sequence":"additional","affiliation":[{"name":"Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Splaiul Independen\u021bei no 313, 060042 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4141-6697","authenticated-orcid":false,"given":"Ioan","family":"Calinescu","sequence":"additional","affiliation":[{"name":"Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Splaiul Independen\u021bei no 313, 060042 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7708-4420","authenticated-orcid":false,"given":"Valentin","family":"Raditoiu","sequence":"additional","affiliation":[{"name":"Laboratory of Functional Dyes and Related Materials, National Institute for Research & Development in Chemistry and Petrochemistry\u2014ICECHIM, 202 Splaiul Independentei, 6th District, 060021 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2019-4370","authenticated-orcid":false,"given":"Bogdan","family":"Cojocaru","sequence":"additional","affiliation":[{"name":"Department of Organic Chemistry, Biochemistry & Catalysis, Faculty of Chemistry, University of Bucharest, Bdul Regina Elisabeta 4-12, 030016 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3317-2787","authenticated-orcid":false,"given":"Ludmila Otilia","family":"Cinteza","sequence":"additional","affiliation":[{"name":"Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bdul Regina Elisabeta 4-12, 030016 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4608-4487","authenticated-orcid":false,"given":"Carmen","family":"Curutiu","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Faculty of Biology, University of Bucharest, Intr. 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Portocalelor no 1-3, 060101 Bucharest, Romania"},{"name":"Faculty of Biology, Research Institute, University of Bucharest, Soseaua Paduri 90-92, 50663 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8451-8231","authenticated-orcid":false,"given":"Marius","family":"Enachescu","sequence":"additional","affiliation":[{"name":"Center for Surface Science and Nanotechnology, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania"},{"name":"Academy of Romanian Scientists, 54 Spaiul Independentei, 050094 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laura-Bianca","family":"Enache","sequence":"additional","affiliation":[{"name":"Center for Surface Science and Nanotechnology, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8082-0951","authenticated-orcid":false,"given":"Gabriel","family":"Mustatea","sequence":"additional","affiliation":[{"name":"National R&D Institute for Food Bioresources\u2014IBA Bucharest, 5 Ancu\u0163a B\u0103neasa Street, 020323 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3910-9105","authenticated-orcid":false,"given":"Viorel","family":"Chihaia","sequence":"additional","affiliation":[{"name":"Institute of Physical Chemistry \u201cIlie Murgulescu\u201d, Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adela","family":"Nicolaev","sequence":"additional","affiliation":[{"name":"Department of Surfaces and Interfaces, National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elena-Larisa","family":"Borcan","sequence":"additional","affiliation":[{"name":"Department of Surfaces and Interfaces, National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania"},{"name":"Faculty of Physics, University of Bucharest, Atomistilor 405, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Grigore","family":"Mihaescu","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Faculty of Biology, University of Bucharest, Intr. 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