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Metal nanotubes with multiple walls (see Figure) have been synthesized in bulk quantities using a combination of galvanic replacement reaction (between Ag nanowires and salt precursors) and an electroless plating process of silver. These nanotubes with controllable structure, composition, and morphology are expected to find uses ranging from catalysis to gas storage, optoelectronics, electronics, and optical sensing.
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Sun et al. (2004) studied this question.
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