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However, the stability and agglomeration of SA co\u2010catalysts on the semiconductor surface may represent a critical issue in potential applications. Here, the photoinduced destabilization of Pt SAs on the benchmark photocatalyst, TiO\n                    <jats:sub>2<\/jats:sub>\n                    , is described. In aqueous solutions within illumination timescales ranging from few minutes to several hours, light\u2010induced agglomeration of Pt SAs to ensembles (dimers, multimers) and finally nanoparticles takes place. The kinetics critically depends on the presence of sacrificial hole scavengers and the used light intensity. Density\u2010functional theory\u00a0calculations attribute the light induced destabilization of the SA Pt species to binding of surface\u2010coordinated Pt with solution\u2010hydrogen (adsorbed H atoms), which consequently weakens the Pt SA bonding to the TiO\n                    <jats:sub>2<\/jats:sub>\n                    surface. Despite the gradual aggregation of Pt SAs into surface clusters and their overall reduction to metallic state, which involves &gt;90% of Pt SAs, the overall photocatalytic H\n                    <jats:sub>2<\/jats:sub>\n                    evolution remains virtually unaffected.\n                  <\/jats:p>","DOI":"10.1002\/adma.202206569","type":"journal-article","created":{"date-parts":[[2022,11,14]],"date-time":"2022-11-14T05:00:12Z","timestamp":1668402012000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":116,"title":["Light\u2010Induced Agglomeration of Single\u2010Atom Platinum in Photocatalysis"],"prefix":"10.1002","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1408-5143","authenticated-orcid":false,"given":"Nikita","family":"Denisov","sequence":"first","affiliation":[{"name":"Department of Materials Science and Engineering Chair for Surface Science and Corrosion (WW4\u2010LKO) Friedrich\u2010Alexander\u2010Universit\u00e4t Erlangen\u2010N\u00fcrnberg  Martensstrasse 7 91058 Erlangen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shanshan","family":"Qin","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering Chair for Surface Science and Corrosion (WW4\u2010LKO) Friedrich\u2010Alexander\u2010Universit\u00e4t Erlangen\u2010N\u00fcrnberg  Martensstrasse 7 91058 Erlangen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johannes","family":"Will","sequence":"additional","affiliation":[{"name":"Institute of Micro\u2010 and Nanostructure Research &amp; 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