酞菁镍-ZnO复合光催化剂的合成及其降解亚甲基蓝性能研究

Preparation and Photocatalytic Performance of Nickel Phthalocyanine Doped ZnO for Methylene Blue

采用水热法以25∶1,50∶1,100∶1和150∶1的掺杂比例,制备酞菁镍(NiPc)敏化半导体ZnO纳米粉末光催化剂,并用IR、UV、XRD及XPS等方法对NiPc-ZnO进行微观结构表征。研究了在可见光照射下,NiPc-ZnO对模拟染料废水中有机染料亚甲基蓝的降解性能。结果表明:NiPc能有效地扩展ZnO的可见光吸收范围,并提高其光催化性能,当酞菁镍掺杂比例为50∶1时,亚甲基蓝的降解率最高,达到53.7%,比纯ZnO提高了30.6%。

The nickel phthalocyanine were prepared by solid phase melting method,and 25∶1,50∶1,100∶1,150∶1 as the doping ratio by hydrothermal method,with nickel phthalocyanine doping sensitized semiconductor ZnO nanopowders. The properties of nickel phthalocyanine and photocatalyst were characterized by IR,UV,XRD and XPS. The photocatalytic activity of nickel phthalocyanine-ZnO composites was studied by using methylene blue as the simulated organic pollutants. The results show that the nickel phthalocyanine-ZnO has a wider absorption spectrum range and higher visible light photocatalytic activity than pure ZnO,the degradation efficiency of nickel phthalocyanine-ZnO is 30. 6%higher than pure ZnO when the doping ratio is 50∶ 1.