Precise recognition of palladium through interlaminar chelation in a covalent organic framework

Hydroxy-Containing Covalent Organic Framework Combined with Nickel Ferrite as a Platform for the Recognition and Capture of Bisphenols

“…In conclusion, the serrated AA-eclipsed pattern matched best with the synthesized COF component. As a recent example in the literature, the serrated AA model has been successfully used to describe a hydroxy-containing COF, demonstrating the robustness and availability of this model . Notwithstanding, COFs conforming to the serrated AA-eclipsed pattern are still scarcely reported, resulting in the lack of insights into their formation mechanisms.…”

MXene-Derived 3D Defect-Rich TiO2@Reduced Graphene Oxide Aerogel with Ultrafast Carrier Separation for Photo-Assisted Uranium Extraction: A Combined Batch, X-ray Absorption Spectroscopy, and Density Functional Theory Calculations

“…Various strategies have been proposed to optimize the photocatalyst for uranium extraction, including adjusting the energy band structure or introducing adsorption sites on the photocatalyst. ,− An effective method for tailoring the energy band structure originates from introducing impurity energy states into the band gap of photocatalysts, which can be achieved by introducing vacancies. , For example, our previous work demonstrated that efficient uranium extraction could be achieved by defective WO 3– x with a suitable band structure . Apart from introducing vacancies, the introduction of adsorption sites for uranium extraction could be realized by constructing a typical semiconductor-adsorbent heterojunction. , Previous literature reports that graphene aerogel (GA) is an ideal scaffold for encapsulating nanomaterials such as ZnO, Fe 3 O 4 , and TiO 2 , − which can synergistically enhance the performance of photocatalytic extraction of heavy metal ions from aqueous solutions. − In addition, the GA has excellent electrical conductivity and unique three-dimensional (3D) mesoporous channels, which can promote electron transfer in the photocatalytic process . Ti-based MXene materials have been reported as a capable precursor for producing nano-Ti-based oxides and related composites owing to its two-dimensional (2D) nanosheet morphology .…”

Metal–Organic Framework Accelerated One-Step Capture and Reduction of Palladium to Catalytically Active Nanoparticles

“…Whether to obtain Pd from natural ores or spent wastes, it is critical to selectively extract Pd from complicated matrixes, where multiple recycling steps, intensive labor, and long time are conventionally required . To prepare Pd NPs, further dissociation, elution, and reduction are required, which span hours to days.…”

“…1,11 Whether to obtain Pd from natural ores or spent wastes, it is critical to selectively extract Pd from complicated matrixes, where multiple recycling steps, intensive labor, and long time are conventionally required. 12 To prepare Pd NPs, further dissociation, elution, and reduction are required, which span hours to days. Moreover, harsh physical and chemical treatments involving extremely high temperature are used during processing, having problems including high-energy consumption and generation of pollution.…”