Anhui Normal University

About: Anhui Normal University is a education organization based out in Wuhu, China. It is known for research contribution in the topics: Catalysis & Population. The organization has 7955 authors who have published 7309 publications receiving 117443 citations.

A facile route to carbon-coated nickel-based metal nanoparticles

Abstract: A novel facile route with the features of low-energy consumption and cheap nontoxic source materials was designed to prepare nickel-based metals such as Ni and FeNi and carbon core/shell (Ni/C and FeNi/C) nanostructures at room temperature and ambient pressure. The Ni/C and FeNi/C core/shell nanostructures were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectrometry (EDX), Raman spectroscopy, infrared spectroscopy and X-ray photoelectron spectroscopy (XPS). The surfaces of nickel-based metal/C, being abundant in organic functional groups such as –OH and –COOH, could be easily loaded with biomolecules such as tyrosine, which may be used in clinic diagnostics, molecular biology, bioengineering, and catalysis by loading with other functional molecules (e.g. enzymes, antigens). The magnetic properties and oxidative resistance of Ni/C core/shell nanostructures have been investigated by vibrating sample magnetometry (VSM). It was found that the Ni/C core/shell nanostructures showed excellent magnetic properties compared with those of Ni/C obtained by other methods and had high stability. The present route may give researchers more choices for preparing other Ni-based metal/C nanostructures.

A sensitive electrochemical DNA biosensor based on gold nanomaterial and graphene amplified signal

Abstract: In this study, we developed a highly sensitive and selective electrochemical biosensor for the detection of the specific-sequence target DNA. It was fabricated based on a “sandwich-type” detection strategy, which involved capture probe immobilized on the surface of the gold nanorods (Au NRs) decorated reduced graphene oxide (rGO) sheets, and reporter probe labeled gold nanoparticle (Au NPs) that flank the target DNA. Adriamycin was used as an electrochemical indicator because it could be electrostatically bonded to the anionic phosphate of DNA strands. Differential pulse voltammetry (DPV) was used to investigate the hybridization event by the measurements of peak current of adriamycin changed before and after hybridization. The incorporation of Au NPs and Au NRs decorated rGO sheets in this sensor design significantly enhanced the sensing performance. Under optimal conditions, the peak currents of adriamycin in DPV were linear with the logarithm of target DNA concentration in the range of 1.0 × 10−16 to 1.0 × 10−9 M with a detection limit of 3.5 × 10−17 M (signal/noise ratio of 3). In addition, this DNA sensor exhibited good selectivity, even for single-base mismatched target DNA detection.

First-principles study on intrinsic defects of SnSe

Abstract: The formation energies and electronic properties of intrinsic defects of SnSe, including two vacancies (VSn and VSe), two interstitials (Sni and Sei) and two antisites (SnSe and SeSn), are investigated by using density functional theory (DFT) calculations. The results indicate that, due to a relatively low formation energy as well as a desirable ultra-shallow transition energy level, VSn can act as an effective source for p-type conduction under both Sn- and Se-rich conditions, which implies that SnSe is a native p-type semiconductor. On the other hand, a native n-type conduction is unlikely to be realized due to the absence of effective intrinsic sources. In addition, all the three types of intrinsic defects are not capable of inducing magnetism.

Isolated Iron Single-Atomic Site-Catalyzed Chemoselective Transfer Hydrogenation of Nitroarenes to Arylamines.

Abstract: Selective hydrogenation of nitroarenes to arylamines is a great challenge because of the complicated mechanism and competitive hydrogenation of reducible functional groups. Isolated single-atomic s...