CdS/CdMoO_4空心微球复合材料的化学沉淀法制备及光催化性能
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摘要
采用化学沉淀法制备了CdS/CdMoO_4空心微球复合材料,通过透射电镜(TEM)、扫描电镜(SEM)、X射线衍射仪(XRD)、X射线光电子能谱分析仪(XPS)、荧光光谱(PL)等对该复合材料的结构、形貌及其光学和可见光光催化性能进行了表征.结果表明,所制备的CdS/CdMoO_4复合材料具有明显的空心微球结构,且其直径在1μm左右,表现出优异的吸附性能.此外,CdMoO_4良好的光生电子转移性能使得CdS/CdMoO_4空心微球复合材料亦表现出良好的催化性能和光稳定性.该复合材料在60 min内对亚甲基蓝光降解率达到了98.7%,且3次光催化实验重复性好.
CdS/CdMoO_4 hollow microsphere composites were prepared using a chemical precipitation method. The structure,morphology and photocatalytic properties of these crystals were characterized by transmission electron microscopy( TEM), X-ray diffraction( XRD), X-ray photoelectron spectroscopy( XPS),scanning electron microscopy( SEM) and photoluminescence spectroscopy( PL). The results showed that the as-prepared CdS/CdMoO_4 composites displayed a well-defined hollow microsphere structure with a diameter of approximately 1μm,which possessed excellent adsorption properties. Furthermore,the good photocatalytic properties and photo-stability of CdS/CdMoO_4 hollow microsphere composites were attributed to the good photogenic electron transfer performance of CdMoO_4. The degradation rate of methylene bule by the composites was 98.7% under visible light irradiation and a good repeatability in photocatalytic performance was observed during the three cycles.
CdS/CdMoO_4 hollow microsphere composites were prepared using a chemical precipitation method. The structure,morphology and photocatalytic properties of these crystals were characterized by transmission electron microscopy( TEM), X-ray diffraction( XRD), X-ray photoelectron spectroscopy( XPS),scanning electron microscopy( SEM) and photoluminescence spectroscopy( PL). The results showed that the as-prepared CdS/CdMoO_4 composites displayed a well-defined hollow microsphere structure with a diameter of approximately 1μm,which possessed excellent adsorption properties. Furthermore,the good photocatalytic properties and photo-stability of CdS/CdMoO_4 hollow microsphere composites were attributed to the good photogenic electron transfer performance of CdMoO_4. The degradation rate of methylene bule by the composites was 98.7% under visible light irradiation and a good repeatability in photocatalytic performance was observed during the three cycles.
引文
[1]PANT B,PARK M,PARK S J,et al.One-pot synthesis of CdS sensitized Ti O2,decorated reduced graphene oxide nanosheets for the hydrolysis of ammonia-borane and the effective removal of organic pollutant from water[J].Ceramics International,2016,42(14):15247-15252.
[2]JIANG X,JUNFENG Ma,LIN B,et al.Hydrothermal Synthesis of CdMoO4,Nano-Particles[J].Journal of the American Ceramic Society,2007,90(3):977-979.
[3]LI K,WANG L,LIU W,et al.Ionic liquid-assisted sacrificial templating route to hollow CdMoO4microtubes[J].Journal of the Ceramic Society of Japan,2010,118(1375):253-255.
[4]HOU L R,LIAN L,ZHANG L H,et al.Microwave-assisted hydrothermal fabrication of CdMoO4,nanorods with high photocatalytic degradation performance for methyl orange[J].Materials Letters,2013,109(10):306-308.
[5]WANG W S,ZHEN L,XU C Y,et al.Formation of CdMoO4porous hollow nanospheres via a self-assembly accompanied with Ostwald ripening process and their photocatalytic performance[J].Crystengcomm,2013,15(39):8014-8021.
[6]ZHOU L,WANG W,XU H,et al.Template-free fabrication of CdMoO4hollow spheres and their morphology-dependent photocatalytic property[J].Crystal Growth&Design,2008,8(10):3595-3601.
[7]AHAMAD T,KHAN M A M,KUMAR S,et al.CdS quantμm dots:growth,microstructural,optical and electrical characteristics[J].Applied Physics B,2016,122(6):179-189.
[8]LIU Y,REN L,QI X,et al.One-step hydrothermal fabrication and enhancement of the photocatalytic performance of CdMoO4/CdS hybrid materials[J].The Royal Society of Chemistry,2014,4(17):8772-8778.
[9]MADHUSUDAN P,ZHANG J,CHENG B,et al.Fabrication of CdMoO4@CdS core-shell hollow superstructures as high performance visible-light driven photocatalysts.[J].Physical Chemistry Chemical Physics,2015,17(23):15339-15347.
[10]艾翠玲,郭锐敏,邵享文.CdS-TiO2复合光催化剂可见光下降解黄连素[J].环境化学,2013,32(3):366-373.AI C L,GUO R M,SHAO X W,Visible light induced photocatalytic degradation of the antibiotic berberine with CdS-TiO2in suspen[J].Environmental Chemistry,2013,32(3):366-373(in Chinese).
[11]VZQUEZ A,HERNNDEZ-Uresti D B,OBREGN S.Electrophoretic deposition of CdS coatings and their photocatalytic activities in the degradation of tetracycline antibiotic[J].Applied Surface Science,2016,386:412-417.
[12]KANG Q,LIU S,YANG L,et al.Fabrication of PbS nanoparticle-sensitized Ti O2nanotube arrays and their photoelectrochemical properties[J].Acs Applied Materials&Interfaces,2011,3(3):746-749.
[13]MADHUSUDAN P,ZHANG J,YU J,et al.One-pot template-free synthesis of porous CdMoO4,microspheres and their enhanced photocatalytic activity[J].Applied Surface Science,2016,387:202-213.
[14]ZHU S,LIANG S,GU Q,et al.Effect of Au supported Ti O2,with dominant exposed{001}facets on the visible-light photocatalytic activity[J].Applied Catalysis B Environmental,2012,s 119-120(3):146-155.
[15]李晓芬,陈梦莹,梁诗景,等.Ag负载CdMoO_4光催化剂的制备及其催化性能[J].无机化学学报,2016,32(11):1987-1994.LI X F,CHEN M Y,LIANG S J,Preparation and Photocatalytic Performance of Ag Nanoparticles Loaded CdMoO_4 Photocatalyst[J].2016,32(11):1987-1994(in Chinese).
[16]周田,陈炳地,姚爱华,等.CdS/石墨烯纳米复合材料的超声化学法制备及光催化性能[J].无机化学学报,2013,29(2):231-236.ZHHOU T,CHEN B D,YAO A H,CdS-Graphene nanohybrids:Facile ultrasonic synthesis and photocatalytic performance[J].2013,29(2):231-236(in Chinese).
[17]DARWISH M,MOHAMMADI A,ASSI N.Partially decomposed PVP as a surface modification of ZnO,CdO,Zn S and CdS nanostructures for enhanced stability and catalytic activity towards sulphamethoxazole degradation[J].Bulletin of Materials Science,2017,40(3):1-10.
[18]王喜全,赵丹丹,于丽红.石墨烯/二氧化钦降解亚甲基蓝的研究田[J].环境工程,2015,33(2):38-42.WANG X Q,ZHAO D D,YU L H,Study on degradation of methylene blue by graphene/Ti O2[J].2015,33(2):38-42(in Chinese).
[19]杨传玺,王炜亮,董文平,等.可见光响应PANI/Ti O2和PoPD/Ti O2纳米材料的氧化机制及协同-光敏化作用[J].环境化学,2016,35(1):102-111.YANG C X,WANG W L,DENG W P,et al.Oxidation mechanism and synergetic-photosensitization effect of visible-light-induced PANI/Ti O2and PoPD/Ti O2nanocomposites[J].Environmental Chemistry,2016,35(1):102-111(in Chinese).
[20]ZHANG H,ZHU Y.Significant visible photoactivity and antiphotocorrosion performance of CdS photocatalysts after monolayer polyaniline hybridization[J].Journal of Physical Chemistry C,2010.114(13):5822-5826.
[2]JIANG X,JUNFENG Ma,LIN B,et al.Hydrothermal Synthesis of CdMoO4,Nano-Particles[J].Journal of the American Ceramic Society,2007,90(3):977-979.
[3]LI K,WANG L,LIU W,et al.Ionic liquid-assisted sacrificial templating route to hollow CdMoO4microtubes[J].Journal of the Ceramic Society of Japan,2010,118(1375):253-255.
[4]HOU L R,LIAN L,ZHANG L H,et al.Microwave-assisted hydrothermal fabrication of CdMoO4,nanorods with high photocatalytic degradation performance for methyl orange[J].Materials Letters,2013,109(10):306-308.
[5]WANG W S,ZHEN L,XU C Y,et al.Formation of CdMoO4porous hollow nanospheres via a self-assembly accompanied with Ostwald ripening process and their photocatalytic performance[J].Crystengcomm,2013,15(39):8014-8021.
[6]ZHOU L,WANG W,XU H,et al.Template-free fabrication of CdMoO4hollow spheres and their morphology-dependent photocatalytic property[J].Crystal Growth&Design,2008,8(10):3595-3601.
[7]AHAMAD T,KHAN M A M,KUMAR S,et al.CdS quantμm dots:growth,microstructural,optical and electrical characteristics[J].Applied Physics B,2016,122(6):179-189.
[8]LIU Y,REN L,QI X,et al.One-step hydrothermal fabrication and enhancement of the photocatalytic performance of CdMoO4/CdS hybrid materials[J].The Royal Society of Chemistry,2014,4(17):8772-8778.
[9]MADHUSUDAN P,ZHANG J,CHENG B,et al.Fabrication of CdMoO4@CdS core-shell hollow superstructures as high performance visible-light driven photocatalysts.[J].Physical Chemistry Chemical Physics,2015,17(23):15339-15347.
[10]艾翠玲,郭锐敏,邵享文.CdS-TiO2复合光催化剂可见光下降解黄连素[J].环境化学,2013,32(3):366-373.AI C L,GUO R M,SHAO X W,Visible light induced photocatalytic degradation of the antibiotic berberine with CdS-TiO2in suspen[J].Environmental Chemistry,2013,32(3):366-373(in Chinese).
[11]VZQUEZ A,HERNNDEZ-Uresti D B,OBREGN S.Electrophoretic deposition of CdS coatings and their photocatalytic activities in the degradation of tetracycline antibiotic[J].Applied Surface Science,2016,386:412-417.
[12]KANG Q,LIU S,YANG L,et al.Fabrication of PbS nanoparticle-sensitized Ti O2nanotube arrays and their photoelectrochemical properties[J].Acs Applied Materials&Interfaces,2011,3(3):746-749.
[13]MADHUSUDAN P,ZHANG J,YU J,et al.One-pot template-free synthesis of porous CdMoO4,microspheres and their enhanced photocatalytic activity[J].Applied Surface Science,2016,387:202-213.
[14]ZHU S,LIANG S,GU Q,et al.Effect of Au supported Ti O2,with dominant exposed{001}facets on the visible-light photocatalytic activity[J].Applied Catalysis B Environmental,2012,s 119-120(3):146-155.
[15]李晓芬,陈梦莹,梁诗景,等.Ag负载CdMoO_4光催化剂的制备及其催化性能[J].无机化学学报,2016,32(11):1987-1994.LI X F,CHEN M Y,LIANG S J,Preparation and Photocatalytic Performance of Ag Nanoparticles Loaded CdMoO_4 Photocatalyst[J].2016,32(11):1987-1994(in Chinese).
[16]周田,陈炳地,姚爱华,等.CdS/石墨烯纳米复合材料的超声化学法制备及光催化性能[J].无机化学学报,2013,29(2):231-236.ZHHOU T,CHEN B D,YAO A H,CdS-Graphene nanohybrids:Facile ultrasonic synthesis and photocatalytic performance[J].2013,29(2):231-236(in Chinese).
[17]DARWISH M,MOHAMMADI A,ASSI N.Partially decomposed PVP as a surface modification of ZnO,CdO,Zn S and CdS nanostructures for enhanced stability and catalytic activity towards sulphamethoxazole degradation[J].Bulletin of Materials Science,2017,40(3):1-10.
[18]王喜全,赵丹丹,于丽红.石墨烯/二氧化钦降解亚甲基蓝的研究田[J].环境工程,2015,33(2):38-42.WANG X Q,ZHAO D D,YU L H,Study on degradation of methylene blue by graphene/Ti O2[J].2015,33(2):38-42(in Chinese).
[19]杨传玺,王炜亮,董文平,等.可见光响应PANI/Ti O2和PoPD/Ti O2纳米材料的氧化机制及协同-光敏化作用[J].环境化学,2016,35(1):102-111.YANG C X,WANG W L,DENG W P,et al.Oxidation mechanism and synergetic-photosensitization effect of visible-light-induced PANI/Ti O2and PoPD/Ti O2nanocomposites[J].Environmental Chemistry,2016,35(1):102-111(in Chinese).
[20]ZHANG H,ZHU Y.Significant visible photoactivity and antiphotocorrosion performance of CdS photocatalysts after monolayer polyaniline hybridization[J].Journal of Physical Chemistry C,2010.114(13):5822-5826.