通过设计多步电位阶跃分析,发现重构的C@NiCoP/NF催化剂遵守间接氧化机制,即催化剂会优先发生重构形成高价活性物种,高活性物种作为真正的活性中心参与UOR过程。 图7.(a) OER和(b) UOR在不同应用电位下C@NiCoP/NF波特图;(c) C@N...
在NiCo-ZIF@MIL(1:2)的FTIR光谱中,NiCo-ZIF的特征峰的消失可能是由于MIL-100的包裹。C=O的拉伸振动,苯环的框架振动,C-H的拉伸振动,和平面外弯曲的振动归因于MIL-100。这些峰值的强度的变化可能是由于MIL-100和NiCo-ZIF之间的相...
In this paper, Ni, Co and Ni–Co bimetallic MNP/MOF catalysts derived from MOFs were prepared by controlled pyrolysis, and then characterized by TGA, FTIR, XRD, BET, SEM, XPS and H2-TPD, which showed that pyrolysis under H2 (reported typically under an inert atmosphere) and the addition ...
近日,新加坡南洋理工大学楼雄文教授课题组报道了一种新型的MOF参与策略,包括化学刻蚀、阳离子交换和热氧化过程,实现了尖晶石纳米盒的定向合成及其阳离子的可控调控,成功获得了具有Ni离子占据四面体位和Co和Fe离子占据八面体位的多孔Co基三金属尖晶石氧化物纳米盒(NiCo2-xFexO4NBs)。具体来讲,以Co基沸石咪唑骨架纳米立方...
如图5所示,通过对比不同样品的FTIR数据,发现不同Fe/Ni比例的FTIR图谱与无定型的“MOF”和“FeOOH”具有类似的图谱,鉴于此,推断FexNiy-ZIF纳米片的基团振动与上述二者类似,因此FexNiy-ZIF纳米片是一类同时拥有2-甲基咪唑配体和含氧基团的化合物,这与TEM能谱数据的推断一致。 本发明制备的FexNiy-ZIF纳米片作为活性...
利用XPS,EDS,FTIR和Raman等表征手段对N/C@Ni3-Co LDH-1 h纳米片阵列电极进行微结构分析,证实该电极优异的电化学性能不仅因为它具有独特的纳米片阵列结构,还来源于电极内部均匀复合了导电性良好的N/C材料.(3)组装的N/C@Ni Co LDH//AC(正极:N/C@Ni Co LDH纳米片阵列;负极:AC)非对称性固态超级电容器的...
shows the The signal FTIR spectra at 3453 cm−1 of is tNhei50OC-oH50-sLtrDetHch, iαn-gNbia(OndH, )a2riasnindgαf-rComo(OinHte)r2lasyaemrpwleaste. rThmeoylehcauvleessiamnid- metal-hydroxyl groups. The band centered at 1634 cm−1 can be ascribed to the bending vibration ...
FTIR, Raman and XRD analysis of graphene oxide films prepared by modified Hummers method. Journal of Physics: Conference Series. Vol. 1495. No. 1. IOP Publishing, 2020. Google Scholar [38] Karthikeyan Krishnamoorthy, et al. The chemical and structural analysis of graphene oxide with different ...
Metal-organic framework (MOF) is a porous material with large specific surface area, adjustable pores, and diverse components [23]. It has a great potential as a self-template to prepare multifunctional porous materials. Among them, the Prussian blue analogue (PBA, M3II[MIII(CN)6]2 H2O) ...
MOF(DABCO) and bimetallic NiCo-MOF(DABCO) were synthesized using 1,4-diazabicyclo [2.2.2] octane (DABCO) as a chelating agent, with thorough characterization of their physicochemical attributes through various techniques including X-ray diffraction (XRD) and Fourier transform infrared spectra (FTIR...