2010年9月2日 · Measurements are described of the paramagnetic susceptibilities of Co3O4, ZnCo2O4, and mixed crystals of ZnAl2O4-ZnCo2O4 and the results are given in a table of X-values and two plots of 1/X...

2014年2月25日 · FT-IR, XRD, EDX and VSM results suggest the as-prepared Co 3 O 4 nanoplates are pure and single-phase with a weak ferromagnetic behavior. The optical spectrum indicated two direct band gaps at 2.18 and 3.55 eV with a blue shift compared with the bulk samples. The plausible pathway for the formation of Co 3 O 4 nanoplates was also proposed.

本工作利用水热法成功构建具有优异电化学活性的Co9S8@Fe3O4异质结构催化剂。 研究结果表明，得益于Fe3O4发挥的“栅栏”作用，在OER过程中Co9S8组分经历了Co9S8→CoOx→CoOOH的重构过程，但是整个催化剂三维形貌结构并未发生坍塌。 在电化学测试中，该催化剂在500 mA cm-2电流密度时过电势低至350 mV，且能在500 mA cm-2电流密度稳定运行120 h。 本文的研究结果加深了人们对过渡金属硫化物催化剂在OER过程中动态结构演变的理解，并且提供了一种大电 …

2008年11月7日 · Co3O4/TiO2 Nanocomposite Formation Leads to Improvement in Ultraviolet–Visible-Infrared-Driven Thermocatalytic Activity Due to Photoactivation and Photocatalysis–Thermocatalysis Synergetic Effect.

2021年1月1日 · In the present study, cobalt oxide (Co3 O 4) nanoparticles have been synthesized using cobalt nitrate as its source by precipitation approach. The structural properties of the synthesized Co3 O 4 nanoparticles were studied using × ray diffraction (XRD). The XRD results confirm the crystalline nature of the nanoparticles.

The X-ray diffraction (XRD) pattern was used to determine the structure of Co3O4 nanoparticles. The presence of Co3O4 nanoparticles was confirmed by the FTIR spectrum.

2022年9月15日 · Results obtained show the Co 3 O 4 to assume a normal-spinel-type crystalline structure, which remains thermally stable till the onset of its complete decomposition into CoO (>1050–1200 K) in the N 2 atmosphere.

This article provides a comprehensive review of the state-of-the-art activities that concentrate on the synthesis, structural properties and catalytic applications of Co 3 O 4 nanocrystals and Co 3 O 4 –MO x binary oxides in CO, CH 4 and VOC oxidation at low temperatures.

Employing the elemental sensitivity of x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD), we study the valence and magnetic order in the heavy fermion...

Mesoporous cobalt oxide calcined at 350 °C exhibited the best oxidation activity and can achieve complete oxidization (100% conversion) of CO to CO2 at −60 °C under normal conditions (∼3–10 ppm of H2O) and at 80 °C under moisture rich conditions (∼3% H2O). The commercial Co3O4 reached 100% conversion at 220 °C under normal conditions.