对于10%-Ce─ZnO样品,在这两种氧化物的边缘观察到丰富的缺陷(图2c),表明存在丰富的Ce─O─Zn结构。傅里叶变换红外光谱(FTIR)研究了Ce─O─Zn结构的化学成分(图2d)。以445和403 cm−1为中心的峰分别属于Zn─O和Ce─O的拉伸振动...
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The XRD and FTIR investigations have shown the same structure both for DTA resulted residues in air and for samples isothermally treated at 500掳C for 1h. Based on the obtained results, the thermal treatment of the samples was established depending on their intended applications. In the ...
金属有机骨架(MOFs)是偶氮染料脱色的重要催化剂。 一种新型、简便的制备磁性Zn2(BDC)2(DABCO) MOF的方法,该方法是一种类fenton的非均相纳米催化剂,可用于降解水中的偶氮染料。 采用傅里叶变换红外光谱(FTIR)评价样品的官能团,x射线衍射(XRD)分析样品的晶体结构,氮吸附-解吸法测量样品的比表面积,场发射扫描电镜(...
Nanocrystalline powders of ZnO, α-Fe2O3 and ZnFe2O4/ZnO were prepared by solution combustion method. The characterization of the nano powders was done by powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The ZnO and α-Fe...
在不同衬底温度下用脉冲激光沉积法(PLD)在n型硅(111)衬底上生长ZnO薄膜.通过对薄膜进行的X射线衍射(XRD),傅里叶红外吸收(FTIR),光致发光谱(PL),透射电子显微镜(TEM)和... 庄惠照,何建廷,薛成山,张晓凯,田德恒,胡丽君,薛守斌,Zhuang...
摘要 通过溶胶-凝胶法和浸渍法制备了负载Zn的SiO2包覆Fe3O4(Zn-Fe3O4@SiO2展开更多 Zinc-loaded iron oxide coated with silica(Zn-Fe3O4@SiO2)was prepared by sol-gel and impregnation methods,and characterized by SEM,TEM,XPS,Py-FTIR,VSM and EDS for analysis on textural and magnetic properties....
Polycrystalline spinel ferrites Zn x Mg1−xFe2O4 (where x = 0.0, 0.1, 0.15, 0.2, 0.25 and 0.3) were prepared by standard ceramic method and characterized by x-ray diffraction, Fourier transform infrared spectroscopy (FTIR), and vibrating sample magnetometer. Structural, electric and magnetic...
FTIR、Raman和DFT计算表明,桥氧空位被引到Zn3V2O7(OH)2·2H2O的隧道结构中可以调节Zn2+与V-O-V键中O之间的相互作用。理论计算表明,具有8%浓度桥氧空位的ZVO具有较低的扩散能垒(0.2 eV)和较窄的带隙(1.23 eV).并表现出...
本文采用(乙二胺四乙酸) EDTA络合法制备Ba(Zn_(1/3)Nb_(2/3))O_3, Ba(Mg_(1/3)Nb_(2/3))O_3和BaTi_4O_9微波介电陶瓷,通过X射线衍射(XRD),傅立叶变换红外谱(FTIR),热重分析/差热分析(TG/DTA)对有机物的分解过程和煅烧过程相转变进行了分析,并采用扫描电子显微镜(SEM)对最终粉体...