Ocean University of China

About: Ocean University of China is a education organization based out in Qingdao, China. It is known for research contribution in the topics: Population & Sea surface temperature. The organization has 27604 authors who have published 27886 publications receiving 440181 citations. The organization is also known as: Zhōngguó Hǎiyáng Dàxué & OUC.

Vertical Growth of 2D Amorphous FePO4 Nanosheet on Ni Foam: Outer and Inner Structural Design for Superior Water Splitting

Abstract: Rational design of highly efficient bifunctional electrocatalysts based on 3D transition-metal-based materials for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is of great importance for sustainable energy conversion processes. Herein, a novel strategy involving outer and inner structural engineering is developed for superior water splitting via in situ vertical growth of 2D amorphous FePO4 nanosheets on Ni foam (Am FePO4/NF). Careful experiments and density functional theory calculations show that the inner and outer structural engineering contributing to the synergistic effects of 2D morphology, amorphous structure, conductive substrate, and Ni−Fe mixed phosphate lead to superior electrocatalytic activity toward OER and HER. Furthermore, a two-electrode electrolyzer assembled using Am FePO4/NF as an electrocatalyst at both electrodes gives current densities of 10 and 100 mA cm−2 at potentials of 1.54 and 1.72 V, respectively, which is comparable to the best bifunctional electrocatalyst reported in the literature. The strategies, introduced in the present work, may open new opportunities for the rational design of other 3D transition-metal-based electrocatalyst through an outer and inner structural control to strengthen the electrocatalytic performance.

Mussel-inspired molecularly imprinted polymer coating superparamagnetic nanoparticles for protein recognition

Abstract: In this work, we report a facile approach for imprinting protein based on self-polymerization of dopamine in the presence of template protein on the Fe3O4 nanoparticles (NPs) surface. Dopamine, commonly known as a neurotransmitter, is also a small-molecule mimic of the adhesive proteins of mussels. Self-polymerization of dopamine can produce a thin polydopamine (PDA) layer on Fe3O4 NPs surface. During the self-polymerization of dopamine, some template protein molecules were embedded in the PDA layer. After the removal of these embedded protein molecules, the protein imprinted sites are created. The prepared imprinted Fe3O4@PDA NPs shows high binding capacity and acceptable specific recognition behavior towards template proteins.