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https://www.kncv.nl/en/news-details/2026/04/07/gold-nanoballs-for-a-cleaner-world Gold nanoballs for a cleaner world - KNCV Apr 7, 2026 - Gold can help make the world cleaner by acting as a catalyst, converting pollutants into cleaner substances. Hidde Nolten is looking into whether he can speed... for agoldnanoballscleanerworld