以二氧化锰和氢氧化锂为原料,采用高温固相法合成了锂锰氧化物前驱体,再经离子交换技术制备了锰氧化物锂离子筛并用于溶液中Li ⁺的吸附。考察了Al ³⁺和La ³⁺掺杂对锂离子筛结构、形貌和吸锂性能的影响。用粉末X射线衍射（XRD）、扫描电子显微镜（SEM）、傅里叶红外光谱（FTIR）对制备产物进行了表征。结果表明,产物为尖晶石型锰氧化物锂离子筛,呈片状形貌,分散性较均匀。Al ³⁺和La ³⁺掺杂后产物仍然保持尖晶石结构,形貌有所变化,分别呈现出不规则的立方体和纳米颗粒。吸附结果表明,掺杂后锰氧化物锂离子筛的吸附容量有所提高。

Lithium manganese oxides precursor was synthesized by high-temperature solid phase method using manganese dioxide and lithium hydroxide as raw materials.Then manganese oxides lithium ion sieve was prepared by using ion-exchange technology and was used to adsorb Li ⁺ from aqueous solution.The effects of Al ³⁺ and La ³⁺ doping on the structure,morphology and absorption performance of manganese oxides lithium ion sieve was investigated.The products were characterized by pow-der X-ray diffraction（XRD）,scanning electron microscope（SEM） and Fourier infrared spectroscopy（FTIR）.The results showed that manganese oxides lithium ion sieve presents spinel type structure with flaky morphology and uniform dispersion. The products doped with Al ³⁺ and La ³⁺ still maintained spinel type structure,but the morphology changed,and showed irregular cubic and nanoparticles,respectively.The adsorption results showed the adsorption capacity of manganese oxides lithium ion sieve was greatly improved after doping.