Jilin University

About: Jilin University is a education organization based out in Changchun, China. It is known for research contribution in the topics: Catalysis & Apoptosis. The organization has 101453 authors who have published 88966 publications receiving 1444456 citations. The organization is also known as: Jílín Dàxué.

Global Structural Optimization of Tungsten Borides

Abstract: Tungsten borides are among a distinct class of transition-metal light-element compounds with superior mechanical properties that rival those of traditional superhard materials. An in-depth understanding of these compounds, however, has been impeded by uncertainties regarding their complex crystal structures. Here, we examine a wide range of chemical compositions of tungsten borides using a recently developed global structural optimization approach. We establish thermodynamically stable structures and identify a large number of metastable phases. These results clarify and correct previous structural assignments and predict new structures for possible synthesis. Our findings provide crucial insights for understanding the rich and complex crystal structures of tungsten borides, which have broad implications for further exploration of this class of promising materials.

Insights into Enhanced Visible-Light Photocatalytic Hydrogen Evolution of g-C3N4 and Highly Reduced Graphene Oxide Composite: The Role of Oxygen

Abstract: The reduced graphene oxide (RGO)-based composites have attracted intensive attention in research due to its superior performance as photocatalysts, but still lacking is the theoretical understanding on the interactions between constituents, as well as the connection between such interaction and the enhanced photoactivity. Herein, the interaction between the g-C3N4 and RGO sheets is systematically explored by using state-of-the-art hybrid density functional theory. We demonstrate that the O atom plays a crucial role in the RGO-based composites. Compared to the isolated g-C3N4 monolayer, the band gap of composites obviously decreases, and at higher O concentration, the levels in the vicinity of Fermi level are much more dispersive, indicating the smaller effective mass of the carrier. These changes are nonlinear on the O concentration. Interestingly, appropriate O concentration alters the direct-gap composite to indirect-gap one. Most importantly, at a higher O concentration, a type-II, staggered band align...

Ultrasmall Gold Nanorod Vesicles with Enhanced Tumor Accumulation and Fast Excretion from the Body for Cancer Therapy

Abstract: A new kind of ultrasmall dissociable AuNR@PEG/PLGA vesicles (≈60 nm) (AuNR = gold nanorod; PEG = poly(ethylene glycol); PLGA = poly(lactic-co-glycolic acid)) assembled from small AuNRs (dimension: ≈8 nm × 2 nm) is reported. They exhibit several striking features: prolonged circulation and prominent tumor accumulation; rapid excretion from the body as AuNR@PEG after therapy; enhanced photoacoustic and photo thermal properties; and high photothermal cancer therapy efficacy.