Ce掺杂氧化锌的制备及应用研究
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摘要
以醋酸锌和硝酸铈为原料,采用水热法制备氧化锌(ZnO)纳米棒和铈(Ce)掺杂的Ce-ZnO复合材料。并对样品的物理和光学性能进行了表征。以亚甲基蓝溶液为模拟废水,研究了制得的ZnO复合材料的紫外光催化脱色效能。结果表明,在Ce用量为1.5%(摩尔分数),紫外光照时间为50min条件下,光催化性能最好,Ce-ZnO对100mL浓度为10mg/L的亚甲基蓝(MB)溶液的降解率达到98.6%,经过4次循环,对MB的降解率仍达94.1%,说明材料的光催化稳定性较好。
The pure ZnO nanorods and Ce-doped ZnO composites were prepared by hydrothermal method using zinc acetate and cerium nitrate as raw materials.The physical and photophysical properties of samples were characterized.The photocatalytic decolorization of methylene blue(MB)solution was studied under UV irradiation.The results showed that the photocatalytic performance was the best when Ce content was 1.5%.When decolorization time was 50 min,the decolorization rate for 100 mL of 10 mg/L MB solution was 98.6%.The photocatalytic efficiency was still 94.1% after the fifth run,indicating that the photocatalytic activity of 1.5% Ce doped ZnO was quite stable without obvious loss during recycling.
The pure ZnO nanorods and Ce-doped ZnO composites were prepared by hydrothermal method using zinc acetate and cerium nitrate as raw materials.The physical and photophysical properties of samples were characterized.The photocatalytic decolorization of methylene blue(MB)solution was studied under UV irradiation.The results showed that the photocatalytic performance was the best when Ce content was 1.5%.When decolorization time was 50 min,the decolorization rate for 100 mL of 10 mg/L MB solution was 98.6%.The photocatalytic efficiency was still 94.1% after the fifth run,indicating that the photocatalytic activity of 1.5% Ce doped ZnO was quite stable without obvious loss during recycling.
引文
[1]杨佩.锂掺杂氧化锌纳米带阵列薄膜的制备及其光催化性能研究[D].武汉:华中师范大学,2013.
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[3] Lin F,Liao S C,Huang S W.The do thermal plasma synthesis of ZnO nanoparticles for visible-light photocatalyst[J].Journal of Photochemistry and Photobiology(A)Chemistry,2005,174(6):82-87.
[4] Sun T J,Qiu J S,Liang C H.Controllable fabrication and photocatalytic activity of ZnO nanobelt arrays[J].Journal of Physical Chemistry C,2008,112(3):715-721.
[5] Kuo T J,Lin C N,Kuo C L,et al.Growth of ultralong ZnO nanowires on silicon substrates by vaportransport and their use as recyclable photocatalysts[J].Chemistry of Materials,2007,19(21):5143-5147.
[6] Georgekutt Y R,KSeery M,Pillai S C.A highly efficient AgZnO photocatalyst:synthesis,properties,and mechanism[J].Journal of Physical Chemistry C,2008,112(35):13563-13570.
[7]殷巧巧,乔儒,童国秀.离子掺杂氧化锌光催化纳米功能材料的制备及应用[J].化学进展,2014,26(10):1619-1632.
[8]汪应灵,谢友海,薛载坤.Ce掺杂ZnO纳米晶的光催化性能研究[J].人工晶体学报,2011,40(4):917-920.
[9] Du F L,Wang N,Zhang D M,et al.Preparation,characterization and infrared emissivity study of Ce-doped ZnO films[J].Journal of Rare Earths,2010,28(3):391-395.
[10]于翔鹏,傅佳佳,王鸿博.碱沉淀法制备Ce掺杂ZnO及其光催化性能[J].材料科学与工程学报,2015,33(4):591-594.
[11] Zhang J,Li C,Wang B,et.al.Preparation and characterization of fly ash cenospheres supported CuO-BiVO4heterojunction composite[J].Applied Surface Science,2014,300(4):51-57.
[2] Villasenor J,Reyes P,Pecchi G.Photodegradation of pentachloro phenol on ZnO[J].Journal of Chemical Technology and Biotechnology,1988,72(3):105-110.
[3] Lin F,Liao S C,Huang S W.The do thermal plasma synthesis of ZnO nanoparticles for visible-light photocatalyst[J].Journal of Photochemistry and Photobiology(A)Chemistry,2005,174(6):82-87.
[4] Sun T J,Qiu J S,Liang C H.Controllable fabrication and photocatalytic activity of ZnO nanobelt arrays[J].Journal of Physical Chemistry C,2008,112(3):715-721.
[5] Kuo T J,Lin C N,Kuo C L,et al.Growth of ultralong ZnO nanowires on silicon substrates by vaportransport and their use as recyclable photocatalysts[J].Chemistry of Materials,2007,19(21):5143-5147.
[6] Georgekutt Y R,KSeery M,Pillai S C.A highly efficient AgZnO photocatalyst:synthesis,properties,and mechanism[J].Journal of Physical Chemistry C,2008,112(35):13563-13570.
[7]殷巧巧,乔儒,童国秀.离子掺杂氧化锌光催化纳米功能材料的制备及应用[J].化学进展,2014,26(10):1619-1632.
[8]汪应灵,谢友海,薛载坤.Ce掺杂ZnO纳米晶的光催化性能研究[J].人工晶体学报,2011,40(4):917-920.
[9] Du F L,Wang N,Zhang D M,et al.Preparation,characterization and infrared emissivity study of Ce-doped ZnO films[J].Journal of Rare Earths,2010,28(3):391-395.
[10]于翔鹏,傅佳佳,王鸿博.碱沉淀法制备Ce掺杂ZnO及其光催化性能[J].材料科学与工程学报,2015,33(4):591-594.
[11] Zhang J,Li C,Wang B,et.al.Preparation and characterization of fly ash cenospheres supported CuO-BiVO4heterojunction composite[J].Applied Surface Science,2014,300(4):51-57.