Henan Normal University

About: Henan Normal University is a education organization based out in Xinxiang, China. It is known for research contribution in the topics: Catalysis & Ionic liquid. The organization has 10863 authors who have published 11077 publications receiving 166773 citations.

Hierarchically micro/nanostructured porous metallic copper: Convenient growth and superhydrophilic and catalytic performance

Abstract: This paper reports a simple one-step growth of hierarchically micro/nanostructured porous metallic copper microspheres with high yield at room temperature. The key growth strategy is to use phenol and ascorbic acid as porogen and reducing agents, respectively, to induce the growth of the porous hierarchical micro/nanostructure. The samples are characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption. It is found that the morphology and structure of the porous Cu microspheres are highly dependent on the phenol added. Compared to the commercial Cu powders and Cu sheets with dense internal structure, hierarchically micro/nanostructured porous metallic copper microspheres show excellent superhydrophilic surface property and much higher catalytic activity for the reduction of 4-nitrophenol, demonstrating the significance of the pore structure of the copper materials. Their potential applications in catalysis for oxygen reduction reaction of fuel cells are also explored. All these features make the as-prepared porous copper microspheres a highly attractive candidate for multi-functional materials.

Study of chi(cJ) radiative decays into a vector meson

Abstract: The decays chi(cJ) -> gamma V ( V = phi, rho(0), omega) are studied with a sample of radiative psi' -> gamma chi(cJ) events in a sample of (1.06 +/- 0.04) X 10(8)psi' events collected with the BESIII detector. The branching fractions are determined to be: B(chi c1 -> gamma phi) = 25.8 +/- 5.2 +/- 2.3 X 10(-6), B(chi(c1) -> gamma rho(0)) = (228 +/- 13 +/- 22) X 10(-6), and B(chi(c1) -> gamma omega) = (69.7 +/- 7.2 +/- 6.6) X 10(-6). The decay chi(c1) -> gamma phi is observed for the first time. Upper limits at the 90% confidence level on the branching fractions for chi(c0) and chi(c2) decays into these final states are determined. In addition, the fractions of the transverse polarization component of the vector meson in chi(c1) -> gamma V decays are measured to be 0.29(-0.12-0.09)(+0.13+0.10) fo chi(c1) -> gamma phi, 0.158 +/- 0.037(-0.014)(+0.015) for chi(c1) -> gamma rho(o), and 0.247(-0.087-0.026)(+0.090+0.044) for chi(c1) -> gamma omega, respectively. The first errors are statistical and the second ones are systematic.