因此,1,4-BDC配体中的COO-基团能为M-OOH的反键轨道提供电子密度,形成VBM的最高能级,显著改变d态,实现对反应中间体(OH*、OOH*和O*)的吸附,优化反应自由能,进而促进OER进行。 Figure 3. Series of test results of Fe−Ni−Co...
通过普通溶液法制备了双金属NiCo-ZIF-67纳米晶体,并将其作为前驱体,通过采用不同温度的高温热解得到氮掺杂双金属基碳材料.利用X射线衍射仪(XRD),场发射扫描电镜(FESEM... 张晨飞,马景灵,贾兴良,... - 《陶瓷学报》 被引量: 0发表: 2023年 构筑耦合界面提高MnO_2@Co_3O_4催化氧化甲苯性能(英文) (90%)...
🔬 要点1:作者利用Marangoni效应开发了一种简单而通用的策略,成功地完成了从3D ZIF-67到2D ZIF-L的转换。 🔬 要点2:整个转化过程分为四个阶段,在初始阶段,使用传统方法合成ZIF-67纳米立方体。 🔬 要点3:作者利用TEM、XRD和FT-IR技术对合成的纳米立方体进行了表征。 🌐 这项研究不仅展示了MOF晶体转化的...
要点一:多晶/非晶异质界面形成 本研究以ZIF-67为前驱体,室温下采用1,4-BDC作为蚀刻剂,并在制备多金属二维Fe-Ni-Co-MOF过程中引入Fe和Ni,原位生成2D Fe-Ni-Co-MOF(图1)。在活化过程中,金属离子与配体间的部分配位关系被OH-破坏,部分配体从结构中脱离,从而暴露大量金属缺陷位点。随后,在低压电场作用下,这些...
ZIF-67 membranes synthesized on α-Al2O3-plate-supported cobalt nanosheets with amine modification for enhanced H2/CO2 permselectivity. Ind. Eng. Chem. Res. 59, 3182–3188 (2020). Article CAS Google Scholar Zhou, S. et al. Introduction of metal precursors by electrodeposition for the in ...
The crystal structures of the samples were analyzed using an X-ray diffractometer (XRD, DX-2700) at a voltage of 40 kV and a current of 30 mA using Cu-Kα radiation. The structure was analyzed by Fourier transform infrared spectrometer (FTIR-650). The Brunaure-Emmett-Teller (BET) ...
b XRD pattern of LDH and LDH/MWCNT nanocomposites. The scanning is conducted at ambient temperature via Cu Kα diffractor (λ = 0.154 nm). c CO2 adsorption per unit mass of LDH and LDH/MWCNT nanocomposites as a function of MWCNT content at 300 °C and 0.2 bar of CO2. ...
In terms of characterization, various techniques including scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM), have been utilized to examine the structure and morphology of MXene. Raman spectroscopy is also a similar analysis that gives information...
The ZIF-8 grown on GO nanosheets enhanced Zn2+ deposition property and homogenized ion flux to imple- ment smooth deposition. At the same time, PVDF worked as a separator, allowing the protective layer to completely separate anodes and electrolytes and suppressing side reac- tions through ...
Interestingly, for Cube-[CH3NH3][M(HCOO)3] and Petal-[CH3NH3][M(HCOO)3] two discernable peaks at 31.8° and 45.6° in the XRD pattern can be indexed to NaCl (JCPDS No. 05–0628), indicating that Cube-[CH3NH3][M(HCOO)3] and Petal-[CH3NH3][M(HCOO)3] precursors may wrap ...