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.

Regulating the coordination structure of single-atom Fe-N x C y catalytic sites for benzene oxidation

Abstract: Atomically dispersed metal-N-C structures are efficient active sites for catalyzing benzene oxidation reaction (BOR). However, the roles of N and C atoms are still unclear. We report a polymerization-regulated pyrolysis strategy for synthesizing single-atom Fe-based catalysts, and present a systematic study on the coordination effect of Fe-NxCy catalytic sites in BOR. The special coordination environment of single-atom Fe sites brings a surprising discovery: Fe atoms anchored by four-coordinating N atoms exhibit the highest BOR performance with benzene conversion of 78.4% and phenol selectivity of 100%. Upon replacing coordinated N atoms by one or two C atoms, the BOR activities decrease gradually. Theoretical calculations demonstrate the coordination pattern influences not only the structure and electronic features, but also the catalytic reaction pathway and the formation of key oxidative species. The increase of Fe-N coordination number facilitates the generation and activation of the crucial intermediate O=Fe=O species, thereby enhancing the BOR activity.

High supercapacitor and adsorption behaviors of flower-like MoS2 nanostructures

Abstract: Uniform 3D flower-like MoS2 nanostructures were successfully synthesized through a facile two-step hydrothermal method and were applied as electrode materials for high-performance electrochemical capacitors. Galvanostatic charge–discharge measurements showed that the MoS2 electrode had a specific capacitance of 168 F g−1 at a current density of 1 A g−1 and it retained 92.6% of capacitance even after 3000 cycles. Furthermore, the as-prepared MoS2 nanostructures were used as an adsorbent in Rhodamine B aqueous solution, and the maximum adsorption capacity toward Rhodamine B was about 49.2 mg g−1.

Facile Subsequently Light-Induced Route to Highly Efficient and Stable Sunlight-Driven Ag−AgBr Plasmonic Photocatalyst

Abstract: In this paper, we successfully fabricate a stable and highly efficient direct sunlight plasmonic photocatalyst Ag−AgBr through a facile hydrothermal and subsequently sunlight-induced route. The diffuse reflectance spectra of Ag−AgBr indicate strong absorption in both UV and visible light region. The obtained photocatalyst shows excellent sunlight-driven photocatalytic performance. It can decompose organic dye within several minutes under direct sunlight irradiation and maintain a high level even though used five times. In addition, both the scanning electron microscopy images and X-ray photoelectron spectroscopy dates reveal the as-prepared photocatalyst to be very stable. Moreover, the mechanism suggests that the high photocatalytic activity and excellent stability result from the super sensitivity of AgBr to light, the surface plasmon resonance of Ag nanoparticles in the region of visible light, and the complexation between Ag+ and nitrogen atom. Thus, the facile preparation and super performance of Ag−...