镍酞菁修饰镍铝水滑石的制备及光催化性能研究  

Preparation and Photocatalytic Properties of Nickel Phthalocyanine Modified Ni-Al Hydrotalcite

作　　者：徐敏虹[1] 潘国祥[1] 陈海锋[1] 王坤燕[1] 童艳花[1] 

机构地区：[1]湖州师范学院材料化学系,浙江湖州313000

出　　处：《矿物学报》2016年第2期208-214,共7页Acta Mineralogica Sinica

基　　金：浙江省自然科学基金(编号:LQ14B040003);湖州市科技计划项目(编号:2013GY05);湖州师范学院校级科研项目成果(编号:2015XJLK29)

摘　　要：通过共沉淀法将水溶性四羧基镍酞菁（Ni Pc）负载到镍-铝碳酸根水滑石（Ni Al-LDHs）上,制备负载型催化剂（Ni Pc/Ni Al-LDHs）。采用XRD、FT-IR、UV-Vis、TG-DTA和SEM等技术对酞菁衍生物和Ni Pc/Ni Al-LDHs的结构进行表征。结果表明Ni Pc没有改变Ni Al-LDHs的晶型结构和热稳定性能。在10 mg/L、25 m L的甲基橙溶液、p H值为3、H2O2用量50μL的条件下,Ni Pc/Ni Al-LDHs协同H2O2光催化氧化降解甲基橙3 h后,甲基橙剩余率为16.33%。溶液p H值在3~7范围内,Ni Pc/Ni Al-LDHs/H2O2都能有效光催化氧化降解甲基橙,且光催化氧化降解过程涉及到羟基自由基反应。Based on Ni/Al hydrotalcite（Ni Al-LDHs）, catalyst Ni Pc/Ni Al-LDHs loaded aqueous nickel tetracarboxylphthalocyanine（Ni Pc） was synthesized using a coprecipitation method. Structures, morphologies and thermal properties of the phthalocyanine derivatives and catalyst were characterized by XRD, FT-IR, UV-Vis, TG-DTA and SEM. Results show that although the Ni Pc is introduced on Ni Al-LDHs, the crystal structure and thermal stability of Ni Al-LDHs are unchanged. Photocatalytic oxidation degradation of methyl orange（MO） in the Ni Pc/Ni Al-LDHs/H2O2 system lasted for 3 hours. The residual rate of MO was 16.33 % under the the conditions of MO being 10 mg/L 25 m L, p H value of 3, and dosage of H2O2 being 50 μL. The Ni Pc/Ni Al-LDHs/H2O2 system has good photocatalytic oxidation activity for removing MO when the p H value of MO solution is in the range of 3-7. Furthermore, the process of photocatalytic oxidation degradation of MO involves an hydroxyl radical reaction.

关 键 词：镍酞菁 镍铝水滑石 光催化 甲基橙 羟基自由基 

分 类 号：P579[天文地球—矿物学] TB32[天文地球—地质学]