Fe_3O_4超细粒子及其对十二烷基磺酸钠的吸附研究

Adsorption of Sodium Lauryl Sulfonate on the Magnetite Ultrafine Particles

Fe_3O_4超细粒子已经通过沉淀法制备出来.其平均粒径约10nm.比表面为149m^2.g^(-1).零电荷点的pH值为6.85-7.07.十二烷基磺酸钠在Fe_3O_4超细粒子上的吸附等温线已经被测得,并应用Mossbauer谱初步研究了样品在吸附前后的磁学性质.

The magnetite ultrafine particles are prepared with the method of precipitation.The average diameter of particles is about 10 nm.The specific surface area of the sample is 149 m^2·g^(-1).The PH value of the point zero charge is 6.85～7.07.The isotherm of sodium lauryl sulfonate on the magnetite ultrafine particles are ditermined.Around the adsorptiop, the magnetic properties of the Samples are primarily studied by Mossbauer spectrum.