Electronic metal–support interactions (EMSI) describe the electron flow between metal sites and a oxide support. It is generally used to follow mechanism of redox reactions. In this study CuO-CeO2 redox, an additional electrons from metallic Cu surface carbon species observed via combination operando X-ray absorption spectroscopy, synchrotron powder diffraction, near ambient pressure edge fine ...

The toxicity of CuO nanoparticles (CuO NPs) to human hepatocarcinoma (HepG2) cells was investigated in this study. CuO NPs (1 40 mg/L) had significant toxicity to HepG2 cells. The antioxidant N-acetyl-L-cysteine (NAC) significantly reduces the cytotoxicity induced by the CuO NPs, supporting the hypothesis that oxidative stress contributes to the cytotoxicity of CuO NPs. To further explore the o...

A novel hierarchical heterostructure of Ni microspheres-CuO nano-rices was fabricated using a simple two-step process. The CuO rices were densely deposited on the surfaces of Ni microspheres. The phase purity, morphology, and structure of composite heterostructures are characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectros...

   In the present study, CeO2/Fe2O3 nanocomposite was prepared by co-precipitation method and its application was investigated for arsenic removal from water. Characterization of the nano sized adsorbent particles was carried out using SEM and XRD techniques. Systemic adsorption experiments were performed in batch systems and the optimum conditions were obtained. The effects of p...

We performed in-situ XAS study of N2O decomposition over CuO/CeO2 catalysts. The Cu K-edge and Ce L3-edge XANES EXAFS analyses revealed the dynamic crucial role Cu2+/Cu+ Ce4+/Ce3+ ionic pairs during catalytic reaction. observed initial formation reduced Cu+ Ce3+ species activation in helium atmosphere at 400 °C, while concentration these decreased significantly steady-state nitrous oxide degrad...