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Cellulose diacetate semipermeable membrane embodying noble metal nanoparticles (Au and Pt) was prepared. AuCl4-orPtCl62- immobilized in the semipermeable membrane during the transition process of sol to gel was reduced to nanoparticles by the penetration of NaBH 4 . Semipermeable membrane was essential to protect nanoparticles from aggregation as well as remove byproducts from the membrane...
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