Pt/NiFe-LDH hybrids for quantification and qualification of polyphenols.

Polyphenols with antioxidant properties are of significant interest in medical and pharmaceutical applications. Given the diverse range of activities of polyphenols in vivo, accurate detection of these compounds plays a crucial role in nutritional surveillance and pharmaceutical development. Yet, the efficient quantitation of polyphenol contents and qualification of monomer compositions present a notable challenge when studying polyphenol bioavailability.

Experimental Investigation on Corrosion Behavior of X80 Pipeline Steel under Carbon Dioxide Aqueous Conditions.

A combined steady-state and transient approach is employed to investigate the corrosion behavior of X80 pipeline steel in carbon dioxide-saturated brines. Continuous bubbling of carbon dioxide into a test vessel with 1 liter capacity is performed to simulate the flowing condition. The measurement of time-dependent open-circuit potential, polarization resistance, and electrochemical impedance spectroscopy (EIS) is conducted to interpret the evolution of dissolution processes at the corroding interface.

Constructing a Contact-Active Antimicrobial Surface Based on Quarternized Amphiphilic Carbonaceous Particles against Biofilms.

Although contact-active antimicrobial surfaces (CAASs) are efficient, persistent, and safe in inhibiting bacterial adhesion and biofilm formation and much more desirable for applications in the fields ranging from industry to medical devices than others, the intrinsic defects, such as time and cost consumption and uncertainty in the stable immobilization of biocides, of previously established strategies affect their scaling-up preparations. Herein, a CAAS containing amphiphilic carbonaceous particles (ACPs), quarternized polyethyleneimine (QPEI), and thermoplastic polyurethane (TPU) was constructed by a carrier dispersion strategy. Its procedures included the immobilization of QPEI onto ACPs (ACPs-QPEI) and the incorporation of these modified particles into TPU.

A multi-component polyoxometalate and its catalytic performance for CO2 cycloaddition reactions.

A multi-component polyoxometalate based on earth-abundant elements (NH4)10[Co8(H2O)10V10Mo23O104(OH)6]·34.5H2O () has been successfully obtained and characterized. Furthermore, compound acted as a Lewis acid catalyst and promoted the conversion of carbon dioxide to a cyclic carbonate under mild reaction conditions.

Polyoxotungstate incorporating organotriphosphonate ligands: synthesis, characterization, and catalytic for alkene epoxidation.

A S-shaped organotriphosphonate polyoxotungstate, K4H6[H4{(AsW9O33)Zn(H2O)W5O11(N(CH2PO3)3)}2(μ2-O)2]·27H2O (1), has been synthesized and characterized. Compound 1 contains a different geometry of [{Zn(H2O)W5O19(N(CH2PO3)3)}](12-) clusters, which forms a chiral conformation. The catalysis of 1 for alkene epoxidation was investigated with a hydrogen peroxide (H2O2) oxidant.