一种新型碳酸钙纳米管复合物

通过滴定法在333~335 K温度下把Na2CO3溶液滴入CaCl2和十二烷基硫酸钠(SDS)的混合溶液中,得到一种由层状SDS和碳酸钙组成纳米管产物.产物在空气中673 K的温度下煅烧后剩下由CaCO3和CaSO4组成的纳米管化合物,直径在100~200 nm之间,长度在0.5~2μm之间.最初生成CaCO3层状化合物被SDS分子从两面覆盖,然后卷起形成管型.

A Novel Nanotube of Composite of Calcium Carbonate

Nanotube-shaped precursor which is composed of layered structured sodium dodecylsulfate(SDS) calcium carbonate is obtained by titration of an aqueous solution of Na2CO3 into an aqueous solution containing CaCl2 and SDS at 333-335 K.A unit of the repetition of the precursor is about 4 nm.Nanotube-shaped composite which is composed of CaCO3 and CaSO4 of 100-200 nm in diameter and 0.5-2 μm in length is obtained from nanotube-shaped precursor composed of layers of CaCO3 and SDS by calcinations at 673 K in air.The precursor sheet composed of CaCO3 layers on which SDS molecules attached to both side seem to curl up and form a pipe.