如图2a所示,在浸泡5分钟后,与2D Cu-BDC相关的峰迅速消失,并伴随着新峰出现。在浸泡12小时后,趋于稳定,此时的XRD谱图和模拟的1D Cu-BDC谱图类似。1D Cu-BDC的傅里叶变换红外(FTIR)光谱显示DMF的C−N(1107 cm−1和676 cm−1)和C=O(1663 cm−1)振动消失,同时保持BDC配体的苯环带(1386 cm−1、1...
(3)高温激活。将制得的无纺布置于真空干燥箱中,200℃真空下干燥24小时,去除cu(bdc)mof分子结构中残余的dmf小分子,打开其铜金属活性位点和一维孔道,高温激活前后的cu(bdc)的xrd图谱如图4,可以看到,由于200℃后cu(bdc)mof中小分子dmf挥发,一维孔道被打开,因此相比未激活的mof会多出其他的衍射峰。 (4)滴加pvdf_...
The prepared Cu-BDC was fully characterized using different analysis including Fourier-transform infrared spectroscopy (FT-IR), X-ray Powder Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS) and Brunauer-Emmett-Teller (BET). The prepared Cu-BDC had ...
采用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)及N2吸附-脱附技术等对分子筛进行了表征。结果表明,复合分子筛形态规整,Beta与MCM-22分别作为核壳而共生;Beta/MCM-22复合分子筛孔结构性质介于MCM-22、Beta分子筛之间。在酸性分布上,复合分子筛的中强酸及B酸所占比例* 增加(CB/CL=13.8)。通过Ar-H2等离子体...
However, other diffraction peaks in the XRD pattern were shifted, suggesting alterations in the crystallographic properties of the material due to the interactions between α-amylase and the support material. These interactions included: 1) bonding of the enzyme was facilitated by the presence of ...
Thirdly, and most conclusively, the powder XRD pattern of pure HMTA is shown in Figure 2, and no HMTA peaks correspond to the new peaks observed in Cu-BDC⊃HMTA. We tentatively ascribe the additional peaks to well-ordered HMTA molecules binding to the axial copper sites in the framework....
Cu@FSL-1中的Cu NPs是与I2进行电荷转移的主要活性位点(图6c),这与XRD和XPS的分析结果一致。此外,为了进一步了解吸附碘分子与母体FSL-1的相互作用,进行DFT计算得到Eads= -0.476eV,对应弱相互作用(图6d)。值得一提的是,该材料充分反...
应用政治协商会议磨方法使含冷晶相的Al65Cu20Fe13合金转变为非晶相,利用X射线结构分析和扫描电研究了经不同的时间球磨的合金粉末的结构及形貌。结果表明,Al-Cu-Fe二十面体准晶相比合金中少的少量本相更易于非晶化,且在非晶化过程中没有中间相生成。应用高温差热分析仪(DTA)和X射线射衍射技术的(XRD),分别研究了...
A composite β-mCoPc/Cu-BDC is developed by decorating Cu-BDC with β-m-phthalocyanine cobalt (β-mCoPc) and systematically investigated by a series of combined analyses of X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR), N2 ...
Due to the lack of adsorption information about Cu-BDC (copper terephthalate), it was synthesized by two different solvent separation procedures and identified using X-ray diffraction (XRD), Brunauer-Emmet-Telller (BET) and thermogravimetric analysis (TGA) techniques. Moreover, equilibrium adsorption...