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A HKUST-1 derivative composite based on LDH was synthesized to efficiently adsorb iodide anions in aqueous solutions. Specifically, Cu/Al-LDH, HKUST-1, HKUST-1@Cu/Al-LDH, Cu/Al-CLDH, Cu-C and Cu2O@Cu/Al-CLDH were synthesized and characterized. HKUST-1@Cu/Al-LDH kept the desirable characteristics of both Cu/Al-LDH and HKUST-1. Cu2O@Cu/Al-CLDH maintained the morphology of HKUST-1@Cu/Al-LDH, with its iodine anions absorption mechanism being chemical adsorption. Cu2O@Cu/Al-CLDH exhibited a significantly higher adsorption capacity than previously reported Cu-based adsorbents, with an adsorption capacity of 240.7 mg g−1 at pH 3, taking about 240 min to reach adsorption equilibrium. Thus, Cu2O@Cu/Al-CLDH is a promising adsorbent for removing iodide anions from aqueous solutions. [ABSTRACT FROM AUTHOR]

In recent years, the synthesis and application of alkenes have attracted increased attention. Triphenylethenes (TriPEs) have lower molecular torsion than tetraphenylethenes (TPEs), which helps to balance the degree of conjugation and the aggregation-induced emission (AIE) effect. The geometry of double bonds has a significant impact on luminescence. Therefore, it is essential to provide a comprehensive summary of the stereoselective synthetic strategies for trisubstituted alkenes. In this review, common strategies for the stereoselective synthesis of alkenes are described, with an emphasis on the origin of stereoselectivity and the types of substrates. In addition, the AIE properties of TriPE and its applications in optoelectronic devices, stimuli-responsive materials, sensors, and therapies were discussed. [ABSTRACT FROM AUTHOR]

Aluminum alloy bolt-sphere joint is one of the major nodes in aluminum alloy space grid structures. It has been applied in many big projects. In this study, computation methods of mechanical properties and bearing capacity of aluminum alloy bolt-sphere joints in fire are proposed by combining experimental research and theoretical analysis. Results demonstrate that: 1) The tensile strength of aluminum alloy bolt-sphere joints in fire is related to the tensile strength of stainless-steel bolt and the tensile strength seal plate joint. 2) The stainless-steel bolt develops two failure modes, namely, breakage failure of cord and pulling-out failure of screw in fire. 3) The seal plate joint in fire has three tensile failure modes, namely, tensile-shearing combined failure of seal plate at the annular compression position, shear failure of seal plate, and tensile failure of the aluminum alloy tube at the seal plate border. 4) The tensile strength of the stainless-steel bolt begins to decrease significantly when the temperature reaches 300°C. 5) The tensile strength of the seal plate joint begins to decrease sharply when the temperature reaches 200°C. 6) The formula to calculate bearing capacity of aluminum alloy bolt-sphere joints in fire is proposed based on experimental results. [ABSTRACT FROM AUTHOR]