Multisignal Conversion Electrochemiluminescence Strategy Based on Nanozyme-Enhanced Nitrogen-Vacancy/Oxygen-Doped g-CN for the Detection of Cholesterol.

The high and stable signal intensity of electrochemiluminescence (ECL) is crucial for establishing highly sensitive ECL biosensors. Here, nitrogen-vacancy/oxygen-doped carbon nitride (OCNNV-650) was first used as an ECL emitter, significantly improving the low ECL activity and poor dispersion of graphitic carbon nitride (g-CN) through a molecular engineering strategy. It is particularly noteworthy that FeO@MoS peroxidases, as coreaction accelerators, are the key to achieving the first and last "signals on", promoting the production of more SO and even promoting the production of •OH radicals when cholesterol is electrocatalyzed to produce HO.

2D Flower-like CdS@Co/Mo-MOF as Co-Reaction Accelerator of g-CN-Based Electrochemiluminescence Sensor for Chlorpromazine Hydrochloride.

In this study, we have proposed an electrochemiluminescence (ECL) signal amplification system which is based on two-dimensional (2D) flower-like CdS@Co/Mo-MOF composites as a co-reaction accelerator of the g-CN/SO system for ultrasensitive detection of chlorpromazine hydrochloride (CPH). Specifically, the 2D flower-like Co/Mo-MOF with mesoporous alleviated the aggregation of CdS NPs while simultaneously fostering reactant-active site contact and improving the reactant-product transport rate. This allowed the material to act as a novel co-reaction accelerator, speeding up the transformation of the SO into SO and enhancing the cathodic ECL emission of g-CN.

Visible-light-driven amino acids production from biomass-based feedstocks over ultrathin CdS nanosheets.

Chemical synthesis of amino acids from renewable sources is an alternative route to the current processes based on fermentation. Here, we report visible-light-driven amination of biomass-derived α-hydroxyl acids and glucose into amino acids using NH at 50 °C. Ultrathin CdS nanosheets are identified as an efficient and stable catalyst, exhibiting an order of magnitude higher activity towards alanine production from lactic acid compared to commercial CdS as well as CdS nanoobjects bearing other morphologies.

Spatially Separating Redox Centers on Z-Scheme ZnIn S /BiVO Hierarchical Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution.

Photocatalysis technology using solar energy for hydrogen (H ) production still faces great challenges to design and synthesize highly efficient photocatalysts, which should realize the precise regulation of reactive sites, rapid migration of photoinduced carriers and strong visible light harvest. Here, a facile hierarchical Z-scheme system with ZnIn S /BiVO heterojunction is proposed, which can precisely regulate redox centers at the ZnIn S /BiVO hetero-interface by accelerating the separation and migration of photoinduced charges, and then enhance the oxidation and reduction ability of holes and electrons, respectively. Therefore, the ZnIn S /BiVO heterojunction exhibits excellent photocatalytic performance with a much higher H -evolution rate of 5.

Hierarchical core-shell heterostructures of ZnInS nanosheets on electrospun InO nanofibers with highly enhanced photocatalytic activity.

Well-designed heterostructure semiconductor photocatalysts can improve the activity of photocatalytic reactions. In this work, we constructed a series of hierarchical ZnInS/InO heterostructures by growing ultrathin two-dimensional ZnInS nanosheets onto one-dimensional InO electrospun nanofibers and used them as photocatalysts for the efficient photoreduction of toxic Cr(VI). This structural design increased the specific surface area, promoted the separation of photogenerated electrons and holes, and provided more active sites for the catalytic reactions.

Construction of Hierarchical Hollow Co S /ZnIn S Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation.

Visible-light-responsive hierarchical Co S /ZnIn S tubular heterostructures are fabricated by growing 2D ZnIn S nanosheets on 1D hollow Co S nanotubes. This design combines two photoresponsive sulfide semiconductors in a stable heterojunction with a hierarchical hollow tubular structure, improving visible-light absorption, yielding a large surface area, exposing sufficient catalytically active sites, and promoting the separation and migration of photogenerated charges. The hierarchical nanotubes exhibit excellent photocatalytic H evolution and Cr reduction efficiency.

Hierarchical Titanium Dioxide Nanowire/Metal-Organic Framework/Carbon Nanofiber Membranes for Highly Efficient Photocatalytic Degradation of Hydrogen Sulfide.

Photocatalysis is an efficient approach to degrade hydrogen sulfide (H S) and titanium dioxide (TiO ) is commonly used as a catalyst for H S degradation. However, the low separation rate of photoinduced carriers and low gas adsorption ability of TiO limit its H S photocatalytic decomposition rate. In this paper, single-crystalline TiO nanowires are assembled on one-dimensional carbon nanofibers (CNFs) and a tunable metal-organic framework (MOF) coating is fabricated on the surface of the TiO nanowires using a versatile step-by-step self-assembly strategy.

SnS/SnO heterostructured nanosheet arrays grown on carbon cloth for efficient photocatalytic reduction of Cr(VI).

Nowadays, among the many heavy metal pollutants, hexavalent chromium (Cr(VI)) seriously threatens ecological systems and human health due to its high solubility, acute toxicity and potential carcinogenicity in wastewater. Meanwhile, semiconductor photocatalytic reduction is continuously gaining increasing significant research attention in the treatment of Cr(VI). Hence, we report an efficient preparation method for SnS/SnO composites on carbon cloth (CC), for efficient photocatalytic reduction of aqueous Cr(VI).