以水热法制备的氢基钛酸盐纳米管(H-TNT)为基体,利用其离子交换性能在碱性条件下制备了[Pd(NH3)4]2+负载的氢基钛酸盐纳米管.采用ICAP、XRD、TEM、DRS、XPS等手段对材料进行了表征,研究了[Pd(NH3)4]2+的浓度和溶液的pH值对氢基钛酸盐纳米管离子交换性能的影响以及交换后样品的晶型、微观形貌、光学性能以及化学组成.结果表明:[Pd(NH3)4]2+负载在H-TNT表面,相互之间以Pd-O键作用.[Pd(NH3)4]2+负载之后,样品的晶型和管状形貌都没有变化,但是在400 ～ 600 nm范围对可见光有明显吸收.溶液浓度和pH值均对离子交换性能有影响,当[Pd(NH3)4]2+浓度较小,溶液中Pd与H-TNT的质量比较小时,[Pd(NH3)4]2+在9≤pH≤12的范围内能够全部负载到H-TNT上;当[Pd(NH3)4]2+浓度较大,溶液中Pd与H-TNT的质量比较大时,增大浓度和pH值均有利于[Pd(NH3)4]2+负载比例的提高,但pH≥10时,[Pd(NH3)4]2+的负载量却趋于饱和.
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