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.

Colloidal superparticles from nanoparticle assembly.

Abstract: Colloidal superparticles are size- and shape-controlled nanoparticle assemblies in the form of colloidal particles. Because these superparticles can exhibit physical and chemical properties different from both individual nanoparticles and their bulk assemblies, the development of superparticle synthesis has attracted significant research attention and is emerging as a new frontier in the field of nanotechnology. In this review, we discuss theoretical considerations on the nucleation and growth of colloidal superparticles. We then present recent progress in the synthesis and characterization of monodispersed colloidal superparticles, which are important for applications such as biomedical diagnosis, biological separation, and light emitting devices.

Single Atom Ruthenium-Doped CoP/CDs Nanosheets via Splicing of Carbon-Dots for Robust Hydrogen Production

Abstract: Ultrathin two-dimensional catalysts are attracting attention in the field of electrocatalytic hydrogen evolution. This work describe a composite material design in which CoP nanoparticles doped with Ru single-atom sites supported on carbon dots (CDs) single-layer nanosheets formed by splicing CDs (Ru CoP/CDs). Small CD fragments bore abundant functional groups, analogous to pieces of a jigsaw puzzle, and could provide a high density of binding sites to immobilize Ru CoP. The single-particle-thick nanosheets formed by splicing CDs acted as supports, which improved the conductivity of the electrocatalyst and the stability of the catalyst during operation. The Ru CoP/CDs formed from doping atomic Ru dispersed on CoP showed very high efficiency for the hydrogen evolution reaction (HER) over a wide pH range. The catalyst prepared under optimized conditions displayed outstanding stability and activity: the overpotential for the HER at a current density of 10 mA cm was as low as 51 and 49 mV under alkaline and acidic conditions, respectively. Density functional theory calculations showed that the substituted Ru single atoms lowered the proton-coupled electron transfer energy barrier and promoted H−H bond formation, thereby enhancing catalytic performance for the HER. The findings open a new avenue for developing carbon-based hybridization materials with integrated electrocatalytic performance for water splitting. 1 1 1 −2

Amorphizing of Cu Nanoparticles toward Highly Efficient and Robust Electrocatalyst for CO2 Reduction to Liquid Fuels with High Faradaic Efficiencies.

Abstract: Conversion of carbon dioxide (CO2 ) into valuable chemicals, especially liquid fuels, through electrochemical reduction driven by sustainable energy sources, is a promising way to get rid of dependence on fossil fuels, wherein developing of highly efficient catalyst is still of paramount importance. In this study, as a proof-of-concept experiment, first a facile while very effective protocol is proposed to synthesize amorphous Cu NPs. Unexpectedly, superior electrochemical performances, including high catalytic activity and selectivity of CO2 reduction to liquid fuels are achieved, that is, a total Faradaic efficiency of liquid fuels can sum up to the maximum value of 59% at -1.4 V, with formic acid (HCOOH) and ethanol (C2 H6 O) account for 37% and 22%, respectively, as well as a desirable long-term stability even up to 12 h. More importantly, this work opens a new avenue for improved electroreduction of CO2 based on amorphous metal catalysts.

Study of interactions of flavonoids with DNA using acridine orange as a fluorescence probe

Abstract: The interactions of flavonoids, such as quercetin, kaempferide and luteolin, with fish sperm deoxyribonucleic acid (DNA) were explored by using acridine orange (AO) as a fluorescence probe. The variations in the spectroscopic characteristics of DNA–AO in an aqueous medium upon addition of the three drugs were observed. Measurements of ultraviolet absorption and fluorescence spectra, determination of binding constants for flavonoids–double stranded DNA (dsDNA) or flavonoids–single stranded DNA (ssDNA), studies on competitive bindings among these drugs interacting with DNA–AO systems, melting temperature (Tm) curves and viscosity measurements were carried out to investigate binding mechanism of these flavonoids with DNA. The binding mode of quercetin, kaempferide and luteolin with DNA was evaluated to be groove binding. The binding constants of quercetin, kaempferide and luteolin with dsDNA (or ssDNA)–AO complex were 3.19 × 104 (or 1.19 × 104), 5.63 × 104 (or 4.58 × 104) and 2.33 × 104 (or 1.03 × 104) L mol−1, respectively.