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In this study, to overcome the problems of photo corrosion and structural instability, an attempt was made to construct a semiconductor heterojunction with MOF that can resist photo corrosion and reduction to adjust the electron (e−) transport path. The crystal stability and photo corrosion resistance are improved by creating Z-type heterojunctions to change the electron transfer path of Ag photocatalysts. MOFs have unique optical, electrical, and catalytic properties and thus play a key role in optimizing electron transfer pathways. Even if a semiconductor-catalyst heterojunction is constructed, migration-matched catalysts induce a cascade of crystal reduction and photo corrosion in a built-in electric field. At this time, PENS provides an electron acceptor platform, which can temporarily store photoelectrons, prevent the decrease of photoelectrons to the crystal, and improve electron transfer efficiency. The degradation of antibiotics and dyes assessed the resulting impact on photocatalytic efficiency under simulated sunlight, and photocatalytic activity was measured with an eye toward real outdoor applications. Due to the synergistic effect of the double self-cleaning structure, the ultrafiltration membrane exhibits superhydrophilic/underwater superoleophobic properties. It shows excellent separation efficiency and recyclability in the separation of oil-in-water emulsion experiments. [Display omitted] • Z-scheme facilitates the separation and transfer of charge carriers. • Flexibility, temperature resistance and acid and alkali resistance were achieved. • Membrane reactor exhibits efficient photocatalytic mineralization of antibiotics. • Superhydrophilic/underwater superoleophobic to achieve efficient oil-water separation. • Very robust performance over re-use cycles (×8 times) was achieved. This study fabricated PENS/TA/ZIF-67@Ag 2 S (PZA), a double self-cleaning network antifouling polymer membrane reactor, by the non-solvent-induced phase separation (NIPS) method. Due to the synergistic effect of the double self-cleaning structure, it showed an excellent separation efficiency of 99.65% and a high flux of 1198.011 L·m−2·h−1 in the separation of oil-in-water emulsion experiments. After eight cycles, Oil-water separation efficiency remains >99% recyclable. The Z-type heterogeneous conjunctival reactor we constructed has a high-efficiency degradation rate of 99.94% and a mineralization rate of 80.315% for sulfamethoxazole (SMX) within 120 min. From the results of mechanical properties, TGA and DSC, it can be seen that PZA has good strength, toughness and high temperature resistance. According to the experimental analysis of active substances, the active ingredients produced by PZA are •OH., h+, •O 2 –. Based on Density functional theory (DFT) calculations and intermediate analysis, sulfamethoxazole's active sites and degradation pathways (SMX) were explored. According to the Quantitative Structure-Activity Relationship (QSAR) of the Toxicity Estimation Software Tool (TEST), the toxicity of the intermediates produced during the degradation of SMX was predicted. This study provides a feasible strategy for fabricating Z-scheme metal-organic framework (MOF)-based polymer membrane reactors for efficient green antibiotic wastewater treatment and oil-water self-cleaning. [ABSTRACT FROM AUTHOR]

[Display omitted] • Enhanced light absorption was obtained by modification of H 2 BDC with –NH 2. • Ce substitution increased electron transfer from photoexcited organic linkers to Zr-oxo clusters. • (Zr/Ce)U(NH 2)@CN Z-scheme heterojunction strengthened interfacial electrons transfer. • g-C 3 N 4 regulated the morphology and texture feature of (Zr/Ce)U(NH 2) matrix. Aiming at efficient tetracycline (TC) removal, a co-modified (Zr/Ce)U(NH 2) was elaborately designed and integrated with thin-layered g-C 3 N 4 , forming a novel (Zr/Ce)U(NH 2)@CN Z-scheme heterojunction. XRD, XPS, FTIR, ISI-XPS and other analysis cooperatively demonstrated that within this (Zr/Ce)U(NH 2)@CN composite organic linkers H 2 BDC was successfully modified by –NH 2 , metal Zr in Zr-oxo cluster was partially substituted by Ce, Z-scheme heterojunction was formed by the close interaction between MOFs and g-C 3 N 4 , as well as the excellent thermal stability and large specific surface area were achieved. Since g-C 3 N 4 could serve as carrier skeleton to improve the precursor dispersion, the (Zr/Ce)U(NH 2) with reduced particle size grew densely on it. DRS, PL and TRPL characterization proved more photogenerated carriers with prolonged lifetime were generated. As expected, (Zr/Ce)U(NH 2)@CN composite exhibited high TC degradation rate, whose kinetic constant was 23.73 times greater than that of UiO-66, and 5.89 folds larger than that of CN, respectively. This enhanced photocatalytic performance was ascribed to the effective electron transfer regulated by MOFs unit, where the Zr/Ce improved the electron transfer from photoexcited organic linkers to metal-oxo clusters, as well as the MOFs/g-C 3 N 4 Z-scheme heterojunction strengthened interfacial photogenerated carriers transfer. ·OH was the vital species responsible for TC removal using (Zr/Ce)U(NH 2)@CN. Furthermore, intermediate products and degradation pathways were proposed based on HPLC-MS. The toxicity estimation indicated the comprehensive toxicity of TC was significantly alleviated by (Zr/Ce)U(NH 2)@CN photocatalysis. [ABSTRACT FROM AUTHOR]

[Display omitted] A self-standing NiFe-LDH@CoS x /NF electrocatalyst is developed by electrodepositing amorphous CoS x onto NiFe-LDH nanosheet arrays, which shows highly efficient performance towards overall water splitting. • A novel self-standing 3D NiFe-LDH@CoS x /NF bifunctional electrocatalyst is fabricated. • Integration of HER-active CoS x and OER-effective NiFe-LDH endows dual-function activity. • The NiFe-LDH@CoS x /NF assembly requires ultralow overpotentials for both HER and OER. • Interface interactions and synergistic effect favor the both HER and OER activity. Electrocatalytical water splitting to produce hydrogen energy is a promising green technology to solve energy crisis and environmental issues. The development of highly efficient and low-cost electrocatalysts is crucial for mass hydrogen production from water splitting. We newly assemble the self-standing 3D NiFe-LDH@CoS x /NF bifunctional electrocatalysts, via the electrodeposition of amorphous CoS x on two-dimensional (2D) NiFe-LDH nanosheets which are supported by porous nickel foam (NF). The integration of HER-active electrocatalyst of CoS x with outstanding OER catalyst of NiFe-LDH guarantees the bifunctional electrocatalytic activity. Furthermore, the formation of the constructed interfaces between amorphous CoS x and NiFe-LDH nanosheets synergistically favors the electron transfer. Therefore, this novel NiFe-LDH@CoS x /NF hierarchical assembly needs ultralow overpotentials of 136 mV (for HER) and 206 mV (for OER) to afford the 10 mA cm−2 current density in alkaline medium (1 M KOH). An electrolyzer based on the NiFe-LDH@CoS x /NF produces an extremely low cell voltage (1.537 V) and good durability. This study offers a promising strategy for facile fabrication of low-cost electrocatalysts which boost the electrocatalytic performance for overall water splitting. [ABSTRACT FROM AUTHOR]