通过水热法合成了不同浓度Er3+掺杂ZnWO4纳米棒, 并通过XRD、TEM和DRS等对其进行了表征.通过在模拟太阳光照射下光降解RhB的速度来检测ZnWO4样品的光催化活性, 研究了Er3+掺杂浓度对ZnWO4催化活性的影响.实验结果表明,当Er3+掺杂浓度为2mol%时,其光催化性能最好,因为引进Er3+后, Er3+加快了电荷分离效率.
Er3+-doped ZnWO4 nanorods with different doping concentrations were synthesized by a hydrothermal method. The as-prepared products were characterized by XRD, TEM and DRS. The photocatalytic activities of the as-prepared ZnWO4 samples were evaluated by photo-degradation of RhB under simulated solar light irradiation and the effects of Er3+ doping on the photocatalytic activity of ZnWO4 were investigated. The result showed that the sam-ple with the doping concentration of 2mol% exhibited the best photocatalytic performance, which could be ascribed to the promoted charge separation efficiency of Er3+-doped ZnWO4.
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