A ductile and strong-affinity network binder coupling inorganic oligomers and biopolymers for high-loading lithium-sulfur batteries.

Lithium sulfur (Li-S) batteries have become the predominant energy storage devices of the future. However, the reasons why Li-S batteries have not been widely commercialized include the shuttle effect of polysulfides and the volume expansion of sulfur active substances. In this study, a binder with a stretchable 3D reticular structure was induced using inorganic oligomers.

Ru-Ni Alloy Nanoparticles Loaded on N-Doped Amphiphilic Mesoporous Hollow Carbon@silica Spheres as Catalyst for the Hydrogenation of α-Pinene to cis-Pinane.

N-doped mesoporous carbon spheres (NHMC@mSiO ) encapsulated in silica shells were prepared by emulsion polymerization and domain-limited carbonization using ethylenediamine as the nitrogen source, and Ru-Ni alloy catalysts were prepared for the hydrogenation of α-pinene in the aqueous phase. The internal cavities of this nanomaterial are lipophilic, enhancing mass transfer and enrichment of the reactants, and the hydrophilic silica shell enhances the dispersion of the catalyst in water. N-doping allows more catalytically active metal particles to be anchored to the amphiphilic carrier, enhancing its catalytic activity and stability.

Unique CdZnS/WO direct -scheme heterojunction with S, O vacancies and twinning superlattices for efficient photocatalytic water-splitting.

Photocatalytic water-splitting employing the -scheme semiconductor systems mimicking natural photosynthesis is regarded as a promising way to achieve efficient soalr-to-H conversion. Nevertheless, it still remains a big challenge to design high-performance direct -scheme photocatalysts without the use of noble metals as electron mediators. Herein, a unique CdZnS/WO direct -scheme heterojunction was constructed for the first time, which consisted of smaller O-vacancy-decorated WO nanocrystals anchoring on CdZnS nanocrystals with S vacancies and zinc blende/wurtzite (ZB/WZ) twinning superlattices.

Oxidation of 1-propanol to propionic acid with hydrogen peroxide catalysed by heteropolyoxometalates.

Background: Propionic acid as a very valuable chemical is in high demand, and it is industrially produced via the oxo-synthesis of ethylene or ethyl alcohol and via the oxidation of propionaldehyde with oxygen. It is urgent to discover a new preparation method for propionic acid via a green route. Recyclable amino-acid-based organic-inorganic heteropolyoxometalates were first used to high-efficiently catalyse the selective oxidation of 1-propanol to propionic acid with HO as an oxidant.

Hydrogenation of α-Pinene over Platinum Nanoparticles Reduced and Stabilized by Sodium Lignosulfonate.

A one-pot clean preparation procedure and catalytic performance of platinum nanoparticles (NPs) reduced and stabilized by sodium lignosulfonate in aqueous solution are reported. No other chemical reagents are needed during the metal reduction and stabilization step, thanks to the active participation of sodium lignosulfonate (SLS). UV-vis, Fourier transform infrared (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), H NMR, Pt NMR, and two-dimensional heteronuclear single-quantum coherence (2D HSQC) NMR studies were thoroughly performed to analyze the formation, particle size, and main lattice planes of NPs, the valence-state changes of the metal, and structural changes of SLS.

Differential activity of the antioxidant defence system and alterations in the accumulation of osmolyte and reactive oxygen species under drought stress and recovery in rice (Oryza sativa L.) tillering.

The objective of this study was to investigate the effects of drought stress on the activity of antioxidant enzymes and osmotic adjustment substance content in the tillering period of drought-sensitive and drought-tolerant rice cultivars. The results showed that the superoxide dismutase (SOD), peroxidase (POD), catalase activity (CAT), hydrogen peroxide content, soluble protein content and soluble sugar content increased with the accumulation of time and intensity of drought stress. Compared with the drought-sensitive cultivar, drought-resistant cultivar had a smaller photosynthetic affected area, longer CAT enzyme activity duration, and lower HO accumulation.

Alkylation of isobutane and isobutene catalyzed by trifluoromethanesulfonic acid-taurine deep eutectic solvents in polyethylene glycol.

Conventional acidic catalysts for isobutane and isobutene alkylation exhibit low alkylate selectivity. Herein, we employed an acidic deep eutectic solvent, consisting of trifluoromethanesulfonic acid and taurine, in polyethylene glycol as the catalyst. Its high conversion rate and selectivity, as well as recyclability, make it suitable for alkylate gasoline preparation.

Study of catalytic ozonation for tetracycline hydrochloride degradation in water by silicate ore supported CoO.

Tetracycline hydrochloride (TCH) degradation by cobalt modified silicate ore (CoSO) catalytic ozonation in aqueous solution was investigated. CoSO catalyst was synthesized by an impregnation method using Co(NO) as the precursor and natural silicon ore (SO) as the support. The key catalyst preparation conditions (, impregnation concentration, calcination temperature and time) were optimized.

Formation and Extractive Desulfurization Mechanisms of Aromatic Acid Based Deep Eutectic Solvents: An Experimental and Theoretical Study.

The formation and extractive desulfurization (EDS) mechanisms of aromatic acid based deep eutectic solvents (DESs) were studied experimentally and through quantum chemistry calculations. Hydrogen bonding and van der Waals forces were investigated as the driving forces for the formation of aromatic acid based DESs by means of H NMR and FTIR spectroscopy, and DFT calculations. The driving forces of EDS were also studied.

Isobutane/2-butene alkylation catalyzed by Brønsted-Lewis acidic ionic liquids.

The alkylation reaction of isobutane with 2-butene to yield C-alkylates was performed using Brønsted-Lewis acidic ionic liquids (ILs) comprising various metal chlorides (ZnCl, FeCl, FeCl, CuCl, CuCl, and AlCl) on the anion. IL 1-(3-sulfonic acid)-propyl-3-methylimidazolium chlorozincinate [HOS-(CH)-mim]Cl-ZnCl exhibited outstanding catalytic performance, which is attributed to the appropriate acidity, the synergistic effect originating from its double acidic sites and the promoting effect of water on the formation and transfer of protons. The Lewis acidic strength of IL played an important role in improving IL catalytic performance.

Grape seed proanthocyanidins induce mitochondrial pathway-mediated apoptosis in human colorectal carcinoma cells.

Grape seed proanthocyanidins (GSPs) have been reported to possess a wide array of pharmacological and biochemical properties. Recently, GSPs have been reported to inhibit various types of colorectal cancer; however, the mechanism(s) involved remain unclear. The present study investigated the effects of GSPs on HCT-116 human colorectal carcinoma cell line.

Image quality classification for DR screening using deep learning.

The quality of input images significantly affects the outcome of automated diabetic retinopathy (DR) screening systems. Unlike the previous methods that only consider simple low-level features such as hand-crafted geometric and structural features, in this paper we propose a novel method for retinal image quality classification (IQC) that performs computational algorithms imitating the working of the human visual system. The proposed algorithm combines unsupervised features from saliency map and supervised features coming from convolutional neural networks (CNN), which are fed to an SVM to automatically detect high quality vs poor quality retinal fundus images.

A novel Brönsted-Lewis acidic heteropoly organic-inorganic salt: preparation and catalysis for rosin dimerization.

A novel Brönsted-Lewis acidic heteropoly organic-inorganic salt has been prepared via the replacement of protons in neat phosphotungstic acid with both organic and metal cations. This hybrid catalyst, Sm0.33[TEAPS]2PW12O40, exhibited satisfactory performance in the dimerization of rosin to prepare polymerized rosin Under optimum conditions (15.

Deep oxidative desulfurization of dibenzothiophene in simulated oil and real diesel using heteropolyanion-substituted hydrotalcite-like compounds as catalysts.

Three heteropolyanion substituted hydrotalcite-like compounds (HPA-HTLcs) including Mg₉Al₃(OH)₂₄[PW₁₂O₄₀](MgAl-PW₁₂), Mg₉Al₃(OH)₂₄[PMo₁₂O₄₀] (MgAl-PMo₁₂) and Mg₁₂Al₄(OH)₃₂[SiW₁₂O₄₀] (MgAl-SiW₁₂), were synthesized, characterized and used as catalysts for the oxidative desulfurization of simulated oil (dibenzothiophene, DBT, in n-octane). MgAl-PMo₁₂ was identified as an effective catalyst for the oxidative removal of DBT under very mild conditions of atmospheric pressure and 60 °C in a biphasic system using hydrogen peroxide as oxidant and acetonitrile as extractant. The conversion of DBT was nearly 100%.

Electrochemical detection of DNA hybridization based on signal DNA probe modified with Au and apoferritin nanoparticles.

A novel and ultrasensitive electrochemical approach for sequence-specific DNA detection based on signal dual-amplification with Au NPs and marker-loaded apoferritin NPs was reported. Target DNA was sandwiched between capture DNA coupled to magnetic beads and signal DNA self-assembled on Au NPs which were incorporated with marker-loaded apoferritin NPs. Subsequent electrochemical stripping analysis of the electroactive markers released from apoferritin NPs in acidic buffers provided a means to quantify the concentration of target DNA.

Investigation of voltammetric enzyme-linked immunoassay system based on N-heterocyclic substrate of 2,3-diaminopyridine.

A new voltammetric enzyme-linked immunoassay system using the electrochemical substrate 2,3-diaminopyridine (DAP) and horseradish peroxidase (HRP) system has been developed. DAP is oxidized with H2O2 catalyzed by HRP, and the resulting electroactive product produces a sensitive voltammetric peak at potential of -0.72V (vs.

Investigation of voltammetric enzyme-linked immunoassay based on a new system of HAP-H2O2-HRP.

By introducing heterocyclic compound to immunoassay system as an electrochemical substrate for the fist time, a new voltammetric enzyme-linked immunoassay system of 3-hydroxyl-2-aminopyridine (HAP)-H(2)O(2)-horseradish peroxidase (HRP) has been developed. HAP was oxidized with H(2)O(2) catalyzed by HRP, and the resulting electroactive product produced a sensitive voltammetric peak at potential of -0.36 V (vs.

Cyanidophenyl-tris(trimethyl-phosphine)cobalt(II).

The title mol-ecule, [Co(C(6)H(5))(CN)(C(3)H(9)P)(3)], lies on a crystallographic mirror plane with the Co(II) ion coordinated in a distorted square-pyramidal environment with one of the P atoms in the apical position. In the basal plane, the phenyl substituent is trans to the cyanide group with a C-Co-C angle which is significantly distorted from linearity.