Diiron Complexes with Rigid and Conjugated S-to-S Bridges for Electrocatalytic Reduction of CO.

Electroreduction of CO to value-added low-carbon chemicals is a promising way for carbon neutrality and CO utilization. It was found that the diiron complex [(μ-bdt)Fe(CO)] (bdt = benzene-1,2-dithiolate) has high catalytic activity for electrocatalytic CO reduction. To further study the effect of the S-to-S bridge on the catalytic performances of diiron complexes for electrochemical CO reduction, four diiron complexes - with different rigid and conjugated S-to-S bridges were either selected or designed.

Chitosan -NH derived efficient CoO catalyst for styrene catalytic oxidation: Simultaneously regulating particle size and Co valence.

In this study, a CoO catalyst is synthesised using the chitosan-assisted sol-gel method, which simultaneously regulates the grain size, Co valence and surface acidity of the catalyst through a chitosan functional group. The complexation of the free -NH complex inhibits particle agglomeration; thus, the average particle size of the catalyst decreases from 82 to 31 nm. Concurrently, Raman spectroscopy, hydrogen temperature-programmed reduction, electron paramagnetic resonance spectroscopy and X-ray photoelectron spectroscopy experiments demonstrate that doping with chitosan N sources effectively modulates Co to promote the formation of oxygen vacancies.

Oxygen self-supplied nanoparticle for enhanced chemiexcited photodynamic therapy.

Photodynamic therapy (PDT) is a promising strategy for effective cancer treatment. However, it still faces severe challenges, including poor laser penetration and insufficient oxygen (O) in solid tumors. Here, we constructed intelligent Oself-supplied nanoparticles (NPs) for tumor hypoxia relief as well as effective chemiexcited PDT.

Low-cost diatomite supported binary transition metal sulfates: an efficient reusable solid catalyst for biodiesel synthesis.

Using a simple method of impregnation and then calcination, diatomite supported binary transition metal sulfates (Fe and Zr, designated as Fe(SO)&Zr(SO)@diatomite) were prepared and used as a catalyst in the preparation of renewable biofuels. The synthesised Fe(SO)&Zr(SO)@diatomite catalyst (Fe(SO) : Zr(SO) : diatomite = 1 : 2 : 6, mass ratio) was thoroughly characterised using transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, microbeam X-ray fluorescence (μ-XRF) spectroscopy and thermogravimetric analysis (TG). The results demonstrated that the sulfate was successfully loaded onto the diatomite with a uniform distribution.

N-doped CoAl oxides from hydrotalcites with enhanced oxygen vacancies for excellent low-temperature propane oxidation.

A series of nitrogen-doped CoAlO (N-CoAlO) were constructed by a hydrothermal route combined with a controllable NH treatment strategy. The effects of NH treatment on the physico-chemical properties and oxidation activities of N-CoAlO catalysts were investigated. In comparison to CoAlO, a smallest content decrease in surface Co (serving as active sites) while a largest increased amount of surface Co (contributing to oxygen species) are obtained over N-CoAlO/4h among the N-CoAlO catalysts.

Anti-inflammatory effect of flavonoids from chestnut flowers in lipopolysaccharide-stimulated RAW 264.7 macrophages and acute lung injury in mice.

Ethnopharmacological Relevance: Chestnut flowers were one of the by-products during chestnut industrial processing. Chestnut (Castanea mollissima Blume) flower is rich in flavonoids and has been used as a traditional medicine to treat a variety of diseases including respiratory disorders for a long history.

Aim Of The Study: The present study aims to investigate the potential anti-inflammatory effect of flavonoids from chestnut flower (FCF) in lipopolysaccharide (LPS)-treated RAW 264.

Chelating-Template-Assisted in Situ Encapsulation of Zinc Ferrite Inside Silica Mesopores for Enhanced Gas-Sensing Characteristics.

A facile in situ approach has been designed to synthesize zinc ferrite/mesoporous silica guest-host composites. Chelating surfactant, N-hexadecyl ethylenediamine triacetic acid, was employed as structure-directing agent to fabricate mesoporous silica skeleton and simultaneously as complexing agent to incorporate stoichiometric amounts of zinc and iron ions into silica cavities. On this basis, spinel zinc ferrite nanoparticles with grain sizes less than 3 nm were encapsulated in mesoporous channels after calcination.

Fabrication and photoluminescent properties of ZnO/mesoporous silica composites templated by a chelating surfactant.

A novel anionic surfactant-templated synthesis of ZnO/mesoporous silica nanocomposites has been carried out by using N-hexadecylethylenediamine triacetate (HED3A), a triprotic surfactant, as the structure-directing agent. The chelating template can capture zinc ions in solution and then direct the mesophase formation, enabling an amount of zinc oxide to be embedded in the porous silica matrix during calcination. With variation of the molar ratio of Zn(2+) to HED3A in the template, a series of composites with different doping amounts were obtained after the removal of organic components.

Chelating template-induced encapsulation of NiO cluster in mesoporous silica via anionic surfactant-templated route.

In this study, we develop a novel one-step method for synthesis of nickel oxide/silicon dioxide (NiO/SiO(2)) mesoporous composites by using N-hexadecyl ethylenediamine triacetate (HED3A) as structure-directing agent. Besides playing a role in directing the mesophase formation, the anionic surfactant also functions as a chelating agent that binds nickel ions. Ultraviolet-visible (UV-vis) and Fourier transform infrared (FTIR) spectroscopic analyses were undertaken to determine the chelating ability between HED3A and nickel ions.