Vacuum-assisted continuous flow electroless plating approach for high performance Pd membrane deposition on ceramic hollow fiber lumen

Suppressing Dendrite Growth by Dolosse-Structured ZIF-67 Polycrystalline Membranes Through Eliminating Interfacial Electrolyte Turbulence on Zinc Anode

Aqueous Zn-ion batteries (ZIBs) are considered a promising candidate for next-generation energy storage devices, but the Zn dendrite problem limits their practical application potential. Although existing solutions, such as electrolyte additives and electrode coatings, can effectively address this issue, but almost all these solutions are based on a static electrolyte model and overlook the relationship between electrolyte flow and dendrite growth. Herein, inspired by the principle of dolosse to reduce the impact of waves on coastlines, we utilized the epitaxial growth characteristics of metal-organic frameworks (MOFs) to construct a ZIF-67 polycrystalline membrane with macro-microporous on Zn foil (D-67M@Zn). The dolosse-like structure of the membrane effectively eliminates turbulence at the electrode-electrolyte interface, enabling Zn2+ to deposit in a stable electrolyte environment, reducing the secondary nucleation rate of Zn, and inhibiting dendrite growth. The macro-microporous skeleton also helps regulate the morphology of Zn deposition, as confirmed by fluid dynamics analysis and AC-STEM. Benefiting from the unique properties of D-67M, both symmetric cells and full cells based on the D-67M@Zn anode exhibit impressive cycling stability.

All-in-one spot test method for tetracycline using molecularly imprinted polymer-coated paper integrated into a portable 3D printed platform with smartphone-based fluorescent detection

A molecularly imprinted polymer (MIP) has been synthetized, characterized, impregnated on paper, and integrated into a 3D printed platform with smartphone-based fluorescent detection for the determination of tetracycline in water samples. The MIP synthesis was performed by precipitation polymerization, which was subsequently deposited onto a glass microfiber paper. The synthesized polymer and the MIP@paper have been characterized by FTIR spectroscopy, scanning electron microscopy, and EDS spectroscopy. Afterward, a 3D printed detection platform that houses monochromatic LED strips as radiation source and a smartphone as detector have been used for determination of tetracycline. Digital image processing was based on the RGB colour model using image J software and the red intensity channel was used as analytical signal due to its higher sensitivity. Several factors that affect the adsorption capacity and fluorescent detection have been optimized. Under optimum conditions, detection limit of 0.04 mg L-1 and good linearity up 5 mg L-1 (r = 0.998), were achieved. The intra- and inter-day precision of 4.9 and 7.2 %, respectively, expressed as relative standard deviation (%RSD) were obtained, showing the good precision of the proposed methodology. Satisfactory recoveries between 87 and 98 % were obtained spiking real water sample matrices at different concentrations (0.1-0.3 mg L-1). The portable 3D platform with smartphone-based fluorescent detection exploiting all-in-one spot test method for tetracycline using MIP@paper was evaluated with AGREE and GAPI metrics, evidencing its environmentally friendly approach. Furthermore, the BAGI tool demonstrated the practicality of the method, in terms of functionality and applicability compared to previous HPLC and spectrofluorometric methods.