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采用多模板法制备了一种毫米级尺寸的分等级孔钛硅材料(HPTS),通过在HPTS表面还原Cu2+制得Cu-CuO/HPTS复合光催化剂。用SEM、TEM、XRD、XPS、ICP、N2吸附-脱附和电化学测试等技术对所制备材料的微观结构和形貌、组成和性质进行表征。结果表明，Cu-CuO/HPTS具有两套完整的三维连贯的大孔孔道，大孔孔壁由超薄的微-介孔纳米薄膜构成。HPTS兼具宏观材料和纳米材料的优点。HPTS在模拟太阳光下对罗丹明B(RhB)有着良好的光催化降解效果，负载Cu-CuO纳米颗粒以后，提高了材料的光生载流子分离效率，Cu-CuO/HPTS复合催化剂的光催化性能显著提升，表观速率常数k值达到0.52 h-1,是HPTS的2.4倍。整体型毫米级尺寸的Cu-CuO/HPTS光催化剂易于回收并且具有良好的稳定性，在经过5次循环使用后仍保留着良好的光催化活性。
Abstract：A millimeter sized hierarchical porous titanium silicon material(HPTS) was prepared using a multi template method.Cu-CuO/HPTS composite photocatalyst was prepared by reducing Cu2+on the surface of HPTS.The microstructure, morphology, composition, and properties of the prepared materials were characterized using techniques such as SEM,TEM,XRD,XPS,ICP,N2 adsorption desorption, and electrochemical testing.Results showed that Cu-CuO/HPTS had two complete sets of three-dimensional coherent macroporous channels, and the macroporous wall was composed of ultra-thin micro mesoporous nano films.HPTS had the advantages of both macro materials and nano materials.HPTS had a good photocatalytic degradation effect on Rhodamine B(RhB) under simulated sunlight.After loading Cu-CuO nanoparticles, the photocatalytic separation efficiency of the material was improved, and the photocatalytic performance of Cu-CuO/HPTS composite catalyst was significantly improved.The apparent rate at constant k reached 0.52 h-1,2.4 times that of HPTS.The monolithic millimeter sized Cu-CuO/HPTS photocatalyst was easy to recover and had good stability, and retains good photocatalytic activity after five cycles of use.
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基本信息:
DOI：10.13822/j.cnki.hxsj.2023.0234
中图分类号:O643.36;O644.1;TB333
引用信息:
[1]胡俊,葛鑫峰,王明辉,等.多孔Cu-CuO/HPTS复合材料的制备及其光催化性能[J],2023,45(08):32-39.DOI:10.13822/j.cnki.hxsj.2023.0234.
基金信息:
浙江省公益技术研究项目(LGG19E020002)
2023-03-30
2023
2023-05-05
2023
1