Confined Nucleation and Growth of PdO Nanocrystals in a Seed-Free Solution inside Hollow Nanoreactor
| Autor: | Seoyoung Choi, Daun Kim, Ilha Hwang, In Su Lee, Soo Min Kim, Seung Hwan Cho, Kimoon Kim, Jung Kyu Choi, Jaehyoung Koo |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nucleation Nanotechnology 02 engineering and technology Nanoreactor 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Free solution Nanoshell 0104 chemical sciences Nanocrystal Chemical engineering Cucurbituril Homogeneous General Materials Science Nanometre 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 9:29992-30001 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | This paper reports a novel and adaptable hollow nanoreactor system containing a solution of cucurbituril (CB) inside a silica nanoparticle (CB@h-SiO2) which enables the nucleation and formation of nanocrystals (NCs) to be confined at the seed-free interior solution inside the cavity. The above nanospace confinement strategy restricted the volume of medium available for NC formation to the solution inside the cavity to a few tens of nanometers in size and allowed homogeneous NC nucleation to be examined. Harboring of CB@h-SiO2 in a Pd2+ complex solution confined the nucleation and formation of PdO NCs to the well-isolated nanosized cavity protected by the silica nanoshell, allowing the convoluted formation of clustered PdO NCs to be thoroughly examined. The corresponding temporal investigation indicated that PdO NC clusters evolved via a distinct pathway combining dendritic growth on early nucleated seed NCs and attachment of small intermediate clusters. In addition, the explored strategy was used to fabri... |
| Databáze: | OpenAIRE |
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