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.

Porous Mn2O3: A Low-Cost Electrocatalyst for Oxygen Reduction Reaction in Alkaline Media with Comparable Activity to Pt/C

Abstract: Preparing nonprecious metal catalysts with high activity in the oxygen reduction reaction (ORR) can promote the development of energy conversion devices. Support-free porous Mn2O3 was synthesized by a facile aerosol-spray-assisted approach (ASAA) and subsequent thermal treatment, and exhibited ORR activity that is comparable to commercial Pt/C The catalyst also exhibits notably higher activity than other Mn-based oxides, such as Mn3O4 and MnO2. The rotating ring disk electrode (RRDE) study indicates a typical 4-electron ORR pathway on Mn2O3. Furthermore, the porous Mn2O3 demonstrates considerable stability and a good methanol tolerance in alkaline media. In light of the low cost and high earth abundance of Mn, the highly active Mn2O3 is a promising candidate to be used as a cathode material in metal–air batteries and alkaline fuel cells.

Hydrological effects of climate variability and vegetation dynamics on annual fluvial water balance in global large river basins

Abstract: . The partitioning of precipitation into runoff ( R ) and evapotranspiration ( E ), governed by the controlling parameter in the Budyko framework (i.e., n parameter in the Choudhury and Yang equation), is critical to assessing the water balance at global scale. It is widely acknowledged that the spatial variation in this controlling parameter is affected by landscape characteristics, but characterizing its temporal variation remains yet to be done. Considering effective precipitation ( Pe ), the Budyko framework was extended to the annual water balance analysis. To reflect the mismatch between water supply (precipitation, P ) and energy (potential evapotranspiration, E0 ), we proposed a climate seasonality and asynchrony index (SAI) in terms of both phase and amplitude mismatch between P and E0 . Considering streamflow changes in 26 large river basins as a case study, SAI was found to the key factor explaining 51 % of the annual variance of parameter n . Furthermore, the vegetation dynamics ( M ) remarkably impacted the temporal variation in n , explaining 67 % of the variance. With SAI and M , a semi-empirical formula for parameter n was developed at the annual scale to describe annual runoff ( R ) and evapotranspiration ( E ). The impacts of climate variability ( Pe , E0 and SAI) and M on R and E changes were then quantified. Results showed that R and E changes were controlled mainly by the Pe variations in most river basins over the globe, while SAI acted as the controlling factor modifying R and E changes in the East Asian subtropical monsoon zone. SAI, M and E0 have larger impacts on E than on R , whereas Pe has larger impacts on R .

Copper sulfide nanotubes: facile, large-scale synthesis, and application in photodegradation

Abstract: Large-scale synthesis of copper sulfide (CuS) nanotubes with uniform size could be achieved via a facile hydrothermal method The whole process could be adjusted to prepare CuS with different nanostructures by simply changing the concentration of NaOH or reaction temperature while keeping other conditions unchanged X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Photoluminescence (PL) spectroscopy were used to characterize the products The as-prepared CuS nanotubes showed good photocatalytic activity of degrading eosin Y under UV-vis light irradiation, which indicated the potential application of the CuS nanotubes in eliminating pollution and environmental protection