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以ZnO和NaOH为原料,采用低温水热法合成纳米ZnO半导体材料,并与聚乙烯醇(PVA)水溶液在超声作用下混合,通过直接煅烧制备出PVA中含共轭双键碳链结构(C)的ZnO/PVAC复合光催化材料。采用SEM、XRD、FTIR、Raman和UV-Vis DRS对样品进行表征。结果表明:ZnO/PVAC复合光催化材料由结晶性能良好的纳米ZnO和具有共轭结构的聚合物组成,且界面间通过化学键Zn—O—C相连接;在模拟太阳光照射下,ZnO/PVAC复合光催化材料对光的吸收响应可扩展到整个可见光区,并产生较高光电流。光催化性能测试结果表明,ZnO/PVAC复合光催化材料对罗丹明B的降解催化性能(30 min降解率接近于100%)明显高于纯纳米ZnO。
ZnO and NaOH were used as raw materials to synthesize ZnO semiconductor materials by low temperature hydrothermal method and mixed with polyvinyl alcohol (PVA) aqueous solution under ultrasonic wave. The carbon double bond containing carbon chain structure (C ) ZnO / PVAC composite photocatalytic material. The samples were characterized by SEM, XRD, FTIR, Raman and UV-Vis DRS. The results show that the ZnO / PVAC composite photocatalytic material consists of nanocrystalline ZnO with good crystallinity and polymer with conjugated structure, and the interfaces are connected by Zn-O-C bonds; under the simulated solar irradiation, ZnO / PVAC The composite photocatalytic material absorbs light in response to the entire visible light range and produces a higher photocurrent. The results of photocatalytic activity show that the photocatalytic degradation of rhodamine B by ZnO / PVAC composite photocatalyst is obviously higher than that of pure nano-ZnO (30 min degradation rate is close to 100%).