锑掺杂氧化锡介孔微球的制备及其气敏和光学性能研究

发布时间：2018-03-21 06:17

  本文选题：锑掺杂的氧化锡(ATO)　切入点：介孔微球　出处：《上海师范大学》2015年硕士论文　论文类型：学位论文

【摘要】：本论文采用了一种简单易操作的溶剂热法合成了介孔氧化锡及氧化锡锑(ATO)微球。在制备过程中,先系统研究了反应物浓度、反应溶剂及表面活性剂对氧化锡形貌的影响;在优化的反应条件下,研究了不同锑掺杂浓度对所得样品形貌、粒径、导电性、气敏性能以及光学性能的影响,并对相关的机理进行了探索。全文主要内容和结论如下:1.本章运用了一种极其简单的溶剂热法一步成功的制备出形貌规则、粒径均匀,且单分散的氧化锡介孔微球。通过场发射扫描电镜FESEM、透射电镜TEM、X射线衍射仪XRD、比表面吸附脱附BET、四探针和X光电子能谱XPS等表征手段,研究锑的掺杂浓度对氧化锡介孔微球形貌、粒径、结构及导电性的影响。研究结果表明,所制备的氧化锡锑介孔微球无杂相,单个纳米粒子粒径逐渐减小、比表面积逐渐增大、导电性增强,对甲醛的检测灵敏度也逐渐上升,在锑掺杂浓度达到10%(mol)时,制备出的粒径约为500nm的氧化锡锑介孔微球对甲醛的最低检测限度可达1ppm。2.以所研制的氧化锡锑介孔微球为隔热填料,球磨分散后制得透明隔热涂料,采用刮涂的方法制备透明隔热薄膜。研究了锑的掺杂浓度对相应薄膜样品的吸收、透过、反射、吸收边及热屏蔽能力等光学性能的影响。研究发现随着涂层厚度的增加,薄膜样品的透明度和近红外透过率逐渐降。增加涂层厚度在一定程度上有效提高热屏蔽能力,但会牺牲薄膜透明度。进一步研究了不同固含量ATO-10薄膜样品的热屏蔽性能,相比市售氟掺杂的氧化锡FTO和锡掺杂的氧化铟ITO玻璃,所制备样品展现出了显著的热屏蔽能力。通过隔热模拟实验,所研制的ATO-10(25%)薄膜样品在保证良好的采光前提下,具有低于FTO和ITO玻璃1.5-4.5℃的热阻隔效果,在建筑及汽车节能玻璃上有广阔的应用市场。
[Abstract]:In this paper, mesoporous tin oxide and tin antimony oxide (ATO) microspheres were synthesized by a simple solvothermal method. The effects of reactant concentration, reaction solvent and surfactant on the morphology of tin oxide were studied. Under the optimized reaction conditions, the effects of different antimony doping concentrations on the morphology, particle size, electrical conductivity, gas sensitivity and optical properties of the samples were studied. The main contents and conclusions of this paper are as follows: 1. In this chapter, a very simple solvothermal method is used to successfully prepare the morphology rules, and the particle size is uniform. And monodisperse tin oxide mesoporous microspheres were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) Tem X ray diffractometer, specific surface adsorption and desorption (BET), four-probe and X-ray photoelectron spectroscopy (XPS). The effects of antimony doping concentration on the morphology, particle size, structure and electrical conductivity of tin oxide mesoporous microspheres were studied. When the concentration of antimony reached 10mol, the sensitivity of formaldehyde was increased gradually. The minimum detection limit for formaldehyde of tin oxide antimony oxide mesoporous microspheres with diameter about 500 nm can reach 1 ppm.2.The transparent thermal insulation coating was prepared by ball milling and dispersing with tin antimony oxide mesoporous microspheres as thermal insulation filler. The effects of the doping concentration of antimony on the absorption, transmission, reflection, absorption edge and thermal shielding ability of the films were studied. It was found that the thickness of the films increased with the increase of the coating thickness. The transparency and near infrared transmittance of the films decrease gradually. Increasing the thickness of the coatings can improve the thermal shielding ability to some extent, but the transparency of the films will be sacrificed. The thermal shielding properties of ATO-10 films with different solid content are further studied. Compared with fluorine-doped tin oxide FTO glass and tin doped indium oxide ITO glass, the prepared samples show remarkable thermal shielding ability. It has a thermal barrier effect of 1.5-4.5 鈩，

本文编号：1642616