为了确定ZIF-8的熔点,一种常用的实验方法是差示扫描量热法(Differential Scanning Calorimetry, DSC)。通过DSC实验可以测量样品在加热过程中吸收或释放的热量,并根据这些数据得到样品的熔点。 在实验中,通常将精确称量的ZIF-8样品放入一个装有感应式探头的样品盖板中。样品盖板与参比盖板同时置于仪器中进行测试。然后,...
The prepared membranes were evaluated using field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), and gas separation performance. The low loading of ZIF...
图1.(a)-(d) CS/SA/QDs@ZIF-8纳米复合膜分别含有0%、0.1%、0.25%和0.5% QDs@ZIF-8纳米复合膜的SEM图像;(e) CS/SA/QDs@ZIF-8纳米复合膜的EDX映射 (0.25%);(f)CS/SA/QDs@ZIF-8纳米复合膜的FT-IR光谱;(g) CS/...
(华东理工大学石油加工研究所,上海 200237)摘要 以甲醇为溶剂,硝酸锌六水合物为锌源,2-甲基咪唑为有机配体,通过溶剂热法合成了金属有机骨架材料 ZIF-8;采用 X 射线衍射(XRD)、氮气吸附、热重-差热分析(TG-DSC)和扫描电子显微镜(SEM)等方法对 ZIF-8 样品进行了表征;研究了正己烷在 ZIF-8 上的液相吸附动力...
(XRD),Nitrogen a thesynthesized materialwaScharacterizedbyX—ray adsollption/desorption iso也emandscamling s01Vents can electmnmicmscopy(SEM).Theresultsshowtllatthreedifrerent besuccessmllypreparedZIF-8,butwim synthesisofmetllallol as di虢rence inthe伊aillsizea11d sur‰earea,inⅥ枉chthe area ...
结果表明,合成的ZIF-8晶体具有方钠石结构,结晶度较高,孔结构主要为0.37~1.10 nm的微孔,BET比表面积为1836 m2/g,孔体积为0.65 cm~3/g.TG-DSC和高温原位XRD分析结果表明,合成的ZIF-8具有良好的热稳定性能.283~313 K时,正己烷在ZIF-8上液相吸附的扩散系数为(2.53~8.88)×10-12cm~2/s,扩散活化能为31.11...
图1 ZIF-8的TGA/DSC表征结果 由图1可知,ZIF-8样品在400℃之前质量损失非常少,该少量失重主要是样品中的吸附水受热脱除;在400～550℃之间,有显著的质量损失(56%),表明ZIF-8在这个温度段发生热解;550℃后基本热解完全,质量趋于稳定。此外,从图1中还可以看出,ZIF-8在500℃时有一个明显的放热峰。综上,选择在...
以甲醇为溶剂,硝酸锌六水合物为锌源,2-甲基咪唑为有机配体,通过溶剂热法合成了金属有机骨架材料ZIF-8;采用X射线衍射(XRD)、氮气吸附、热重-差热分析(TG-DSC)和扫描电子显微镜(SEM)等方法对ZIF-8样品进行了表征;研究了正己烷在ZIF-8上的液相吸附动力学和动态选择性吸附性能.结果表明,合成的ZIF-... 查看全部...
The electrospun mats were characterized by various analysis including FE-SEM, EDAX, elemental mapping, FT-IR, contact angle, TGA/DSC as well as tensile strength analysis. The nanofibers had average diameters within the range ∼70–120nm. Antimicrobial activities of the CS-PEO and CS-PEO-3% ...
The morphology of nanomaterial was observed by a scanning electron microscope (VEGA\\TESCAN). The crystallinity was checked by X’Pert PRO MPD, PANalytical Co. over a 2θrange of angles from 0° to 50°. Thermogravimetric analyses (TGA) were carried out on TGA/DSC 1 (METTLER TOLEDO Co.,...