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Volumn 100, Issue 16, 1996, Pages 6649-6656

In-situ EXAFS observation of the surface structure of colloidal CdS nanocrystallites in N,N-dimethylformamide

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Indexed keywords


EID: 33748630194     PISSN: 00223654     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp952603g     Document Type: Article
Times cited : (79)

References (92)
  • 72
    • 85088620158 scopus 로고    scopus 로고
    • note
    • 2+ in CdS-DMF solution can be negligible for our experiments.
  • 91
    • 33748633019 scopus 로고    scopus 로고
    • note
    • The terrace model consists of 457 interior cadmium atoms and 266 surface cadmium atoms. Each interior cadmium atom coordinates to four sulfur atoms in a hexagonal crystal structure. In the present model, the total coordination number of each cadmium atom is assumed to be four, even at the surface. On the surface of the terrace models, there are 36 cadmium atoms on a corner, which are each assumed to coordinate to one sulfur atom and three DMF oxygen atoms, 96 edge cadmium atoms, which each coordinate to two sulfur atoms and two DMF oxygens, 86 terrace cadmium atoms, which each coordinate to three sulfur atoms and one DMF oxygen, and 48 kink cadmium atoms, which each coordinate to four sulfur atoms. Thus, the coordination numbers of the Cd-S and Cd-O shells are calculated to be 3.5 [(4 × 457 + 1 × 36 + 2 × 96 + 3 × 86 + 4 × 48)/723] and 0.5 [4-3.5], respectively. For the step model, the coordination numbers of the Cd-S and Cd-O shells can be similarly calculated as 3.0 [(4 × 133 + 1 × 72 + 2 × 36 + 3 × 38 + 4 × 48)/327] and 1.0 [4-3.0], respectively.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.