钛酸钠纳米材料制备及其对Cs~+吸附的影响

利用一步水热法合成了钛酸钠纳米吸附材料。透射电镜和X射线衍射研究结果表明,水热反应条件为100~150℃、48h时,合成的材料为层间距为0.91nm的多层纳米管(TNT)结构;水热反应条件为180℃、48h时,合成的材料为层间距为0.84nm的多层纳米片(TNS)结构。静态吸附实验结果表明,层间距为0.91nm的TNT结构对Cs~+的最大吸附容量可达263.85mg/g;而层间距为0.84nm的TNS结构对Cs~+的最大吸附容量为241.67mg/g。同时还分别对pH值对吸附的影响及吸附动力学进行了研究。

Synthesis of Sodium Titanate Nanomaterial through Hydrothermal Method and Its Adsorption Behavior for Cs+

Sodium titanate nanomaterials were synthesized through one-step hydro-thermal method .The influences of hydrothermal reaction temperature and time on the preparation of nanomaterials and their influences on the adsorption of Cs + were investi-gated .T EM and XRD analyses indicate that the as-prepared multilayer sodium titanate nano-tube (TNT ) is sodium titanate with nano-tubular structure at 100-150 ℃ and 48 h ,and the distance between layers is 0.91 nm .Multilayer sodium titanate nano-sheet (TNS) is sodium titanate with nano-sheet structure at 180 ℃ and 48 h ,and the distance between layers is 0.84 nm .The maximum adsorption capacity of Cs+ on TNT calculated by Langmuir model is 263.85 mg/g ,and that of Cs+ on TNS is 241.67 mg/g .At the same time ,the effects of pH and adsorption kinetics were also investigated .