Talk:Self-cleaning surfaces
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Possible earlier discovery
It seems that the self-cleaning properties of TIO2 are known at least since the 1930s.
https://books.google.com.br/books?id=79oDAAAAMBAJ&pg=PA230&dq=self+cleaning&hl=pt-BR&sa=X&ved=2ahUKEwiV5aXW7NeGAxXiILkGHYUqD-UQ6AF6BAgHEAI 2804:7F3:68F:B9C7:70F1:178E:AE48:8A14 (talk) 05:31, 13 June 2024 (UTC)