The atomically dispersed metal is expected as one of the most promising Fenton‐like catalysts for the degradation of recalcitrant organic pollutants (ROPs) by the strong “electronic metal–support interactions” (EMSIs). Here, we develop an atomically dispersed metal–atom alloy made by guest Au atoms substitute host V atoms in the two‐dimensional VO2(B) nanobelt support (Au/VO2) to activate Fenton‐like oxidation for elimination of ROPs. The 2D nanobelt structure enlarges the exposure of atomically Au thus increasing the number of active sites to absorb more S2O82− ions. And the EMSIs regulate the charge density in Au atoms to present positive charge Au+, lowering the energy barrier of S2O82− decomposition to produce SO4.−. The Au/VO2 catalyst possesses excellent durable and reliable characteristics and exhibits record‐breaking efficiency with TOF as high as 21.42 min−1, 16.19 min−1, and 80.89 min−1 for rhodamine, phenol, and bisphenol A degradation, respectively.

Through in-situ modification of CdIn2S4 nano-octahedron on the surface of ZnIn2S4 nanosheets, ZnIn2S4/CdIn2S4 nano-composites with tight interface contact are obtained by one-step solvothermal method. Due to ZnIn2S4/CdIn2S4 nano-heterostructure, the optimized...

Exploiting low cost, water-soluble, and near-infrared (NIR) emissive electrochemiluminophores (ECLphores) is significantly important for biological applications. In this study, bright and NIR electrogenerated chemiluminescence (ECL) emissive copper nanoclusters (Cu NCs) were synthesized through a facile one-pot wet chemical reduction method. ECL properties of obtained Cu NCs were examined in the presence of potassium persulfate, resulting in maximum intensity at 735 nm, at least 135 nm red-shifted with respect to all other Cu NCs. Electrochemistry, photoluminescence (PL), and spooling ECL spectroscopies were used to track NIR ECL emission of Cu NCs ascribed to the monomeric excited states. Due to the abundant binding sites of bovine serum albumin (BSA) to anchor target biomolecules, a sandwich-type ECL immunosensor was thus fabricated using such BSA-templated Cu NCs as tags and alpha fetoprotein antigen (AFP) as a model protein for the first time. Without assisting any signal amplification strategies, the proposed NIR ECL biosensor exhibited a wide linear range (1−400 ng mL −1 ) and low detection limit (0.02 ng mL −1 ) as well as superior selectivity and reproducibility and was successfully applied in real human serum sample determination. This work sets the stage for the development of novel non-noble metal nanoclusters for large-scale and emerging nanotechnology applications.

This review summarizes the recent developments of a large number of chemiluminescent lumiphores and broad ECL applications.

Herein, aggregation-induced electrochemiluminescence (AIECL) of tetraphenylbenzosilole derivatives in an aqueous phase system with the participation of a co-reactant was systematically investigated for the first time. All organics that we studied exhibit excellent stability and dramatically enhanced electrochemiluminescence (ECL) and photoluminescence (PL) emission when the water fraction increases. The influence of substituents in the structure of tetraphenylbenzosilole derivatives on AIECL performance was proved by fluorescence, cyclic voltammetry, and related theoretical calculation. Among them, 2,3-bis­(4-cyanophenyl)-1,1-diphenyl-benzosilole (TPBS-C) with strong electron-withdrawing cyano groups exhibits the best ECL behavior with the highest ECL efficiency (184.36%). The strongest ECL emission of TPBS-C not only stems from the aggregated molecules that restrict the intramolecular motion of peripheral phenyl groups, which inhibits the nonradiative transition, but also comes from the fact that TPBS-C has the lowest reduction potential, and twice the reduction process of TPBS-C occurs to produce more anion radicals (TPBS-C· –). Significantly, the ECL sensor based on TPBS-C nanoaggregates exhibits excellent detection performance for toxic Cr­(VI) with a wide linear range from 10–12 to 10–4 M and an extremely low detection limit of 0.83 pM. This work developed an efficient luminophore with unique AIECL properties and realized the ultrasensitive detection of Cr­(VI) in the aqueous phase system.