Control of Ostwald ripening
نویسندگان
چکیده
As a thermodynamic process, Ostwald ripening is inevitable in solid solution or liquid sol, which usually leads to inhomogeneous morphologies and poor particle size distributions. For decades, how prevent control has been challenge material preparation, especially for obtaining excellent nanomaterials. Here, we propose two important concepts, critical concentration time window, as the keys inhibit occurring over fairly long time. A series of precise controls were performed preparing NaREF4 nanomaterials by using an automatic nanomaterial synthesizer explore regularity ripening. Our results exhibit that Oswald processes could be controlled exactly, provides effective approach controllable synthesis nanocrystals. By controlling ripening, have not only achieved high-quality nanocrystals but also developed strategy core-shell preparations. Given ubiquity this method can applied many preparation processes.
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ژورنال
عنوان ژورنال: Science China. Materials
سال: 2022
ISSN: ['2095-8226', '2199-4501']
DOI: https://doi.org/10.1007/s40843-022-2233-3