Efficient Removal of Inorganic and Organic Pollutants over a NiCo₂O₄@MOF-801@MIL88A Photocatalyst: The Significance of Ternary Heterojunction Engineering

Abstract

Energy problems are a substantial concern in a global society that can be solved by replacing with sustainable energies. In recent years, designing nanomaterials as photocatalysts that can produce chemical energy with the utilization of infinite visible light energy became a new solution for water treatment. In the present study, NiCo2O4@MOF-801 has been synthesized with multiple properties, and then, a novel three-layer NiCo2O4@MOF-801@MIL88A photocatalyst has been successfully synthesized to improve meropenem degradation and Cr(VI) reduction. The prepared photocatalyst was characterized by XRD, IR, XPS, TEM, SEM, TGA, BET, EIS, PL, and UV–vis. According to the structural and optical analysis performed, the interaction between the components formed a heterojunction structure that prevented the recombination of charge carriers and increased the photocatalytic performance. Photocatalytic simulation tests also proved the reduction of chromium and degradation of antibiotics to find the optimal heterogeneous performance. As a result, the NiCo2O4@MOF-801@MIL88A composite can completely reduce Cr(VI) in 45 min, which is strongly preferable to any pure component’s performance. Overall, this work offers a low-cost but high-efficiency material that can remove organic and inorganic contaminants from water.

Cooperative Design of the Ag3PO4/NH2-MIL-88B (Fe/Co) Heterojunction Integrated with Conductive Polypyrrole for Advanced Photocatalytic Water Purification

“…Cellulose exhibited an amorphous peak between 15 and 25°, in all fabrics. MIL@f had distinct peaks at 9.2 and 10.2°, corresponding to the (002) and (101) crystal planes of MIL, respectively. , In Ag@f, the peaks at 27° (200) and 32° (210) were in good accordance with the cubic phases of Ag 3 PO 4 crystals. , The peaks corresponding to MIL and Ag 3 PO 4 crystals were all observed consistently in the heterojunction photocatalytic fabrics Ag/MIL@f and Ag/PPy/MIL@f. The characteristic peak of amorphous PPy was observed at 25.3° for the polypyrrole-integrated MIL@f (PPy/MIL@f) and Ag/PPy/MIL@f (Figure S2). The results confirmed the successful synthesis of MIL, Ag 3 PO 4 , and PPy on the cellulose fabric.…”

Revolutionizing energy storage: the emergence of MOF/MXene composites as promising supercapacitors

“…One advantage of MOFs over traditional carbon-based electrodes is their high specific capacitance, or the ability to store a large amount of charge per unit mass. This is due to their high surface area, which can range from hundreds to thousands of square meters per gram [30,40]. In addition, MOFs have been shown to exhibit good stability and fast charge-discharge rates, making them promising candidates for high-performance supercapacitors.…”

Construction of a Ce‐UiO‐66/MCo2O4 Heterojunction for Photocatalytic Cr(VI) Detoxification Through a p‐n Junction Formation Mechanism

“…On the other hand, compared to traditional porous materials, MOFs are synthesized under stable conditions and allow systematic engineering of chemical and physical properties by modifying their components [10] . In recent years, Ce‐based MOFs have been widely used in various photocatalytic applications under visible light irradiation, including Ce‐MOF‐808, [11] Ce‐MOF‐500, [12] Ce‐MOF‐400, [13] and Ce‐UiO‐66. Among these MOFs, Ce‐UiO‐66 has been widely used in photocatalytic applications due to its characteristics, such as high chemical and thermal stability, unique oxidation and reduction properties, mild synthesis conditions, and a short reaction period [14] .…”