简介:1从很小时开始,我就想当艺术家。艺术家穿着灯芯绒的外套,留着长头发,蹲在派出所的墙下——李家口派出所里有一堵磨砖对缝的墙,颜色灰暗;我小舅经常蹲在这堵墙下,鼓起了双腮。有些时候,他身上穿的灯芯绒外套也会鼓起来,就如渡黄河的羊
简介:ZrO2-SnO2compositenanoparticleswerepreparedbyheatingthehydrateprecursorssynthesizedbythechemicalco-precipitationreactionofZrOCl2andSnCl4.Theprecursorswereexaminedbydifferentialthermalanalysis(DTA)andthermogravimetricanalysis(TGA).ThecompositepowderwascharacterizedusingX-raydiffraction(XRD),transmissionelectronmicroscopy(TEM)anddesorptionisotherm(Barrett-Joyner-Halendamethod).Theaveragecrystalsizeofthenanoparticlerangesfrom15to30nmforthesamplecontaining5%-25%ZrO2(massfraction).MostoftheporesintheZrO2-SnO2nanoparficlesareabout10-20nmindiameter.Thecompositepowderispromisingforchemicalsensors.