Cadmium ion adsorption controls the growth of CdS nanoparticles on layered montmorillonite and calumit surfaces

Journal Article · Sat May 15 00:00:00 EDT 1999 · Journal of Colloid and Interface Science

DOI:https://doi.org/10.1006/jcis.1999.6174· OSTI ID:352700

Dekany, I; Turi, L ^[1]; Galbacs, G ^[2]; Fendler, J H ^[3]

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1. Hungarian Academy of Sciences (Hungary)
2. Attila Jozsef Univ., Szeged (Hungary). Dept. of Inorganic and Analytical Chemistry
3. Clarkson Univ., Potsdam, NY (United States). Center for Advanced Materials Processing

Adsorption isotherms have been determined for the intercalation of cadmium ions (Cd{sup 2+}) into layered hydrophobized montmorillonite (HDP-M) and calumit (DBS-C) sheets dispersed in ethanol (1)-cyclohexane (2) mixtures. The amount of Cd{sup 2+} adsorbed depended strongly on the composition of the binary liquid; at an ethanol mole fraction of 0.05 (x{sub 1} = 0.05), 95% of the added Cd{sup 2+} is located in the ethanolic nanoreactor at the HDP-M (or DBS-C) surface. CdS nanoparticles have been generated in situ in ethanolic nanoreactors at the HDP-M and DBS-C surfaces. Absorption spectrophotometric measurements provided information on the number of CdS nanoparticles formed and on their absorption edges, bandgaps, and mean diameters. Good correlations have been obtained between the adsorption isotherms and the size (and the amount) of the CdS formed. X-ray diffractometry established that CdS nanoparticles stretched the HDP-M and DBS-C lamellas unevenly upon intercalation.

• OSTI ID: 352700
• Journal Information: Journal of Colloid and Interface Science, Vol. 213, Issue 2; Other Information: PBD: 15 May 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM
ADSORPTION
CADMIUM SULFIDES
CRYSTAL GROWTH
ADSORPTION ISOTHERMS
MONTMORILLONITE
ADSORBENTS
PARTICLE SIZE
SEMICONDUCTOR MATERIALS