Cu~(2+)、Tb~(3+)共掺杂BaZrO_3高近红外反射颜料的制备及其性能研究
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摘要
环保型高近红外反射颜料可以有效缓解城市"热岛效应"和能源危机,对推动绿色建筑节能产业发展具有重要的意义。离子掺杂是实现高近红外反射颜料呈色多样性的有效手段,本研究采用溶胶-凝胶法制备了一系列铜离子和稀土铽离子共掺杂的高近红外反射Ba_(1–x)Cu_xZr_(1–y)Tb_yO_3(x=0.15,0.25,0.35;y=0,0.15)无机颜料。利用X射线衍射仪(XRD)、紫外/可见/近红外分光光度计、CIE 1976 L~*a~*b~*色度坐标等对所合成的颜料粉体的晶体结构、反射性能、颜色性能等进行表征。结果表明,在煅烧温度为1100℃时,所合成的样品均为立方钙钛矿结构;Cu~(2+)、Tb~(3+)共掺杂进入BaZrO_3晶格中,随着掺杂量的增加,颜料样品颜色由白色逐渐变为灰色再变为黄色。而且所得颜料在780～2500 nm波长范围内具有较高的近红外太阳光反射率,其平均反射率(R~*)可达到80%左右。因此,这种Ba_(1–x)Cu_xZr_(1–y)Tb_yO_3"冷"颜料粉体在建筑涂料等方面具有广阔的应用前景。
The urban island effect and energy crisis can be relieved usefully by environmentally benign and high near-infrared reflective pigments,which is of great significance to develop of green energy-saving industry.Ions doping is an effective way to achieve the color diversity of high near infrared reflective pigments.In this work,a series of high near-infrared reflection Ba_(1–x)Cu_xZr_(1–y)Tb_yO_3(x=0.15,0.25,0.35;y=0,0.15)inorganic pigment co-doped with Cu~(2+)and rare earth Tb~(3+)was prepared by a Sol-Gel process.Its phase structure,ultraviolet/visible/near-infrared reflectance,and color parameters of the synthesized pigment samples were investigated and characterized by X-ray diffraction(XRD),UV/Vis/NIR spectroscopy,and color CIE-L~*a~*b~*1976 color scales.The results demonstrate that all synthesized pigments have cubic perovskite structure after calcined at 1100℃.The co-doping of Cu~(2+)and Tb~(3+)is successfully introduced into the BaZrO_3lattice,and the color increasingly changes from white to gray,and to yellow with the increase of Cu~(2+)and Tb~(3+)concentration.Meanwhile,the obtained pigments possess high near-infrared solar reflectance in the range of 780-2500 nm,the average reflectance is up to 80%.Therefore,these Ba_(1–x)Cu_xZr_(1–y)Tb_yO_3cool powdered pigment have great application prospect in the building coatings.
The urban island effect and energy crisis can be relieved usefully by environmentally benign and high near-infrared reflective pigments,which is of great significance to develop of green energy-saving industry.Ions doping is an effective way to achieve the color diversity of high near infrared reflective pigments.In this work,a series of high near-infrared reflection Ba_(1–x)Cu_xZr_(1–y)Tb_yO_3(x=0.15,0.25,0.35;y=0,0.15)inorganic pigment co-doped with Cu~(2+)and rare earth Tb~(3+)was prepared by a Sol-Gel process.Its phase structure,ultraviolet/visible/near-infrared reflectance,and color parameters of the synthesized pigment samples were investigated and characterized by X-ray diffraction(XRD),UV/Vis/NIR spectroscopy,and color CIE-L~*a~*b~*1976 color scales.The results demonstrate that all synthesized pigments have cubic perovskite structure after calcined at 1100℃.The co-doping of Cu~(2+)and Tb~(3+)is successfully introduced into the BaZrO_3lattice,and the color increasingly changes from white to gray,and to yellow with the increase of Cu~(2+)and Tb~(3+)concentration.Meanwhile,the obtained pigments possess high near-infrared solar reflectance in the range of 780-2500 nm,the average reflectance is up to 80%.Therefore,these Ba_(1–x)Cu_xZr_(1–y)Tb_yO_3cool powdered pigment have great application prospect in the building coatings.
引文
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[27]ZHANG XIAO-YU,ZHANG YU-JUN,GONG HONG-YU,et al.Preparation of high near-infrared reflective nano pigments.Jounal of Synthetic Crystals,2013,42(3):482-486.
[28]HEDAYATI H R,ALVANI A A S,SAMEIE H,et al.Synthesis and characterization of Co1-xZnxCr2-yAlyO4 as a near-infrared reflective color tunable nano-pigment.Dyes&Pigments,2015,113:588-595.
[29]HAN AI-JUN,YE MING-QUAN,LIU LI-LI,et al.Estimating thermal performance of cool coatings colored with high near-infrared reflective inorganic pigments:iron doped La2Mo2O7,compounds.Energy&Buildings,2014,84:698-703.
[30]SHI YONG,ZHONG MING-FENG,ZHANG ZHI-JIE,et al.Crystal structure and near-infrared reflective properties of Fe3+doped AlPO4 pigments.Ceramics International,2017,43:5979-5983.
[2]SAMEERA S,RAO P P,DIVYA S,et al.High IR reflecting BiVO4-Ca MoO4 based yellow pigments for cool roof applications.Energy&Buildings,2017,154:491-498.
[3]THONGKANLUANG T,KITTIAUCHAWAL T,LIMSUWAN P.Preparation and characterization of Cr2O3-Ti O2-Al2O3-V2O5 green pigment.Ceramics International,2011,37(2):543-548.
[4]SANTAMOURIS M,SYNNEFA A,KARLESSIi T.Using advanced cool materials in the urban built environment to mitigate heat islands and improve thermal comfort conditions.Solar Energy,2011,85(12):3085-3102.
[5]LEVINSON R,AKBARI H,REILLY J C.Cooler tile-roofed buildings with near-infrared-reflective non-white coatings.Building&Environment,2007,42(7):2591-2605.
[6]SYNNEFA A,SANTAMOURIS M,LIVADA I.A study of the thermal performance of reflective coatings for the urban environment.Solar Energy,2006,80(8):968-981.
[7]SYNNEFA A,SANTAMOURIS M,APOSTOLAKIS K.On the development,optical properties and thermal performance of cool colored coatings for the urban environment.Solar Energy,2007,81(4):488-497.
[8]LEVINSON R,AKBARI H,BERDAHL P,et al.A novel technique for the production of cool colored concrete tile and asphalt shingle roofing products.Solar Energy Materials&Solar Cells,2010,94(6):946-954.
[9]SONG ZHONG-NAN,ZHANG WEI-DONG,SHI YUN-XING,et al.Optical properties across the solar spectrum and indoor thermal performance of cool white coatings for building energy efficiency.Energy&Buildings,2013,63(7):49-58.
[10]VISHNU V S,GEORGE G,DIVYA V,et al.Synthesis and characterization of new environmentally benign tantalum-doped Ce0.8Zr0.2O2,yellow pigments:applications in coloring of plastics.Dyes&Pigments,2009,82(1):53-57.
[11]BIEZA M,GUZIK M,TOMASZEWICZ E,et al.Cubic Yb3+-activated Y6MoO12 micro-powder-optical material operating in NIR region.Optical Materials,2016,63:1-10.
[12]JIANG JUN,YAO BO-LONG,GAO XU-RUI,et al.Preparation and optical properties of copper ion doped Y2Ba2O5 high near infrared reflective pigment.Journal of Inorganic Materials,2016,31(6):641-646.
[13]RAJ A K V,RAO P P,DIVYA S,et al.Terbium doped Sr2MO4[M=Sn and Zr]yellow pigments with high infrared reflectance for energy saving applications.Powder Technology,2017,311:52-58.
[14]VISHNU V S,GEORGE G,REDDY M L P.Effect of molybdenum and praseodymium dopants on the optical properties of Sm2Ce2O7:tuning of band gaps to realize various color hues.Dyes&Pigments,2010,85(3):117-123.
[15]JOVANI M,SANZ A,BELTRAN-MIR H,et al.New red-shade environmental-friendly multifunctional pigment based on Tb and Fe doped Y2Zr2O7 for ceramic applications and cool roof coatings.Dyes&Pigments,2016,133:33-40.
[16]MIKHAILOV M M,NESHCHIMENKO V V,UTEBEKOV T A,et al.Features high-temperature synthesis of barium zirconium titanate powder by using zirconium dioxide nanopowders.Journal of Alloys&Compounds,2015,652:364-370.
[17]GUAN LI,JIN LI-TAO,GUO SHU-QING,et al.Luminescent properties of Eu3+doped BaZrO3 phosphor for UV white light emitting diode.Journal of Rare Earths,2010,28(1):292-294
[18]MOREIRA M L,ANDRéS J,VARELA J A,et al.Synthesis of fine micro-sized BaZrO3 powders based on a decaoctahedron shape by the microwave-assisted hydrothermal method.Crystal Growth&Design,2009,2(2):833-839.
[19]PARIDA S,BISEN A,SINHA E,et al.Dielectric-resonant antenna studies of dysprosium doped barium zirconate ceramic.Journal of Materials Engineering and Performance,2013,22(9):2634-2640.
[20]YANG YU-JIA,WANG JING,HE HUI-FEN.Synthesis and luminescence properties of Tb3+doped BaZrO3 powders.Journal of Inorganic Materials,2016,31(1):27-33.
[21]WU YING,MA WEI-MIN,MA LEI,et al.Preparation and luminescence properties of BaZrO3:(Ce,Pr)nanoparticles.Journal of Synthetic Crystals,2015,44(4):1063-1068.
[22]GUO LI-MIN,ZHONG CAI-FU,WANG XIAO-HUI,et al.Synthesis and photoluminescence properties of Er3+doped BaZrO3 nanotube arrays.Journal of Alloys&Compounds,2012,530(10):22-25.
[23]LIU LI-LI,HAN AI-JUN,YE MING-QUAN,et al.The evaluation of thermal performance of cool coatings colored with high near-infrared reflective nano-brown inorganic pigments:magnesium doped ZnFe2O4 compounds.Solar Energy,2015,113:48-56.
[24]BAO WEI-WEI,MA FEI,Zhang YING-TANG,et al.Synthesis and characterization of Fe3+doped Co0.5Mg0.5Al2O4 inorganic pigments with high near-infrared reflectance.Powder Technology,2016,292:7-13.
[25]YANG RUI,HAN AI-JUN,YE MING-QUAN,et al.Synthesis,characterization and thermal performance of Fe/N co-doped MgTiO3 as a novel high near-infrared reflective pigment.Solar Energy Materials&Solar Cells,2017,160:307-318.
[26]JING JIE,ZHANG YAN-SHUANG,SUN JIA-XIANG,et al.Acomparative study on different RE-doped(RE=Pr,Nd,Sm)SrCuSi4O10 blue pigments with high near-infrared reflectance.Dyes and Pigments,2018,150:9-15.
[27]ZHANG XIAO-YU,ZHANG YU-JUN,GONG HONG-YU,et al.Preparation of high near-infrared reflective nano pigments.Jounal of Synthetic Crystals,2013,42(3):482-486.
[28]HEDAYATI H R,ALVANI A A S,SAMEIE H,et al.Synthesis and characterization of Co1-xZnxCr2-yAlyO4 as a near-infrared reflective color tunable nano-pigment.Dyes&Pigments,2015,113:588-595.
[29]HAN AI-JUN,YE MING-QUAN,LIU LI-LI,et al.Estimating thermal performance of cool coatings colored with high near-infrared reflective inorganic pigments:iron doped La2Mo2O7,compounds.Energy&Buildings,2014,84:698-703.
[30]SHI YONG,ZHONG MING-FENG,ZHANG ZHI-JIE,et al.Crystal structure and near-infrared reflective properties of Fe3+doped AlPO4 pigments.Ceramics International,2017,43:5979-5983.