2023年8月15日 · In this study, potato starch and amorphous cobalt oxide were assembled into carbon aerogel by sol-gel method and high-temperature annealing (CoOx/PSCA). The connected porous structure of the carbon aerogel is conducive to HER mass transfer, and its structure can avoid the agglomeration of transition metals.

The powder XRD patterns of CoP-p and a-CoOx-p confirmed the presence of crystalline CoP phase (JCPDS No. 29-0497) and amorphous CoOx structure, respectively ( Figure S13a, Supporting Informa-...

2019年12月5日 · Cobalt oxide (CoOx) nanoparticles were synthesized onto oxygenated carbon nanotubes (FCNTs) using a simple cyclic voltammetry technique, and used as an electrocatalyst for oxygen reduction reaction (ORR) in alkaline media. The electrodeposition process was optimized by controlling the deposition cycles to achieve the highest catalytic activity.

2024年2月12日 · The structural properties of the as-prepared catalysts were verified by X-ray diffraction (XRD), as shown in Figure 1a. The CoO x sample is composed of CoO and Co 3 O 4.

2017年1月13日 · The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), UV-Vis diffuse-reflectance spectroscopy (DRS), surface photovoltage spectroscopy (SPV) and transient ...

在本文中，作者通过研究表明修饰钴基量子点后的GDY (GDY@CoOxQD)可作为从N2和H2O合成NH3的理想材料， 其在室温和常压下于46次重复实验中可达到26502 μmolNH3 gcat.-1 h-1的最高YNH3，100%的选择性，以及优异的长期稳定性。 同时，GDY中的乙炔键、天然孔道和高还原能力也促进了Co纳米粒子的原位修饰与稳定。 密度泛函理论 (DFT)计算表明，由于Co与GDY的协同作用，使得Co具有很强的光敏性和电子供体效应，从而保证了高效的NRR过程。 因此，N2的 …

通过浸渍法制备了石墨化的氮化碳（gC 3 N 4）担载的CoOx催化剂，并通过XRD，N 2物理吸附，TEM，H 2 -TPR和XPS对其进行了全面表征。 通过甲苯催化燃烧测试的催化性能表明，与负载在SBA-上的其他CoOx催化剂相比，10％CoOx / gC 3 N 4催化剂表现出最高的活性，在约279°C的温度下达到90％的甲苯转化率。 15，在γ-Al 2 ö 3和活性炭（AC）。 gC 3 N 4的具体结构使其成为一种富含N和电子的材料，这可能是存在Co 3 O 4活性相，高表面Co 3+含量和高表面氧吸附 …

The sensor is prepared by electrodeposition of cobalt oxides (CoOx) on a glassy carbon electrode modified with carboxylated single-walled carbon nanotubes (SWCNT).

2020年11月18日 · X-ray diffraction (XRD) is conducted to determine the composition and crystal structure of the catalyst. The powder sample is obtained from the NF substrate by ultrasonication. The XRD pattern of CoO x –RuO 2 powder is displayed in Figure 2 a.

2023年6月15日 · Results reveal that the atomic layering of 10-nm CoO x on the surface of MnCo 2 S 4 nanoneedles enhances the specific capacity (to 628C/g (1396F/g)) at a current density …