Abstract
Multiwalled carbon nanotubes coated with SnO 2 layers of different thickness were prepared by a simple wet-chemical method. The samples have been characterized by X-ray diffraction and transmission electron microscopy. The thickness of the coatings can be easily controlled by changing the synthesis conditions, such as pH value of the solution and hydrolysis time. The smoothness and uniformity of the SnO 2 layers were greatly influenced by the addition of thioglycolic acid, which was used as connecter. The samples prepared by using thioglycolic acid showed very smooth and uniform coating layers, without cracks and broken segments. The growth behavior of the coating layer is also discussed.
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