High-throughput syntheses of iron phosphite open frameworks in ionic liquids

Wang, Zhixiu; Mu, Ying; Wang, Yilin; Bing, Qiming; Su, Tan; Liu, Jingyao

doi:10.1016/j.solidstatesciences.2016.12.017

Cited by 4 publications

(1 citation statement)

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“…Previously, nanoiron oxides having morphologies such as nanospindles, nanoflowers, nanoflakes, hollow microspheres, nanocubes, nanorods, nanosheets, open frameworks, hexagons, etc. using HT, ST, or ionothermal (IT) methods have been reported for various applications. − In a non-conventional way, we have obtained adatom/defect-embedded 2D hexagonal morphology via an IL-assisted HT method. The influence of the catalyst morphological features and the relative Fe 3+ /Fe 2+ /Fe 0 state ratio on the methylene blue (MB) decomposition kinetics was further studied.…”

Section: Introductionmentioning

confidence: 99%

Hydro-ionothermally Generated Paramagnetic Fe State-Embedded Ferromagnetic Iron Oxide with a 2D Hexagonal Nanostructure: A Conceptual Intervention on the Methylene Blue Degradation Mechanism

Joseph,

K K,

K S

et al. 2023

Crystal Growth & Design

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Adatom imperfections over the 2D crystalline topology can be purposefully or accidentally produced, and they can result in either desirable or undesirable features. Here, the work focuses on two key aspects of the veneer of synthetic inorganic chemistry: morphological tailoring using an ionic liquid (IL) template and the implanting of 2D surfaces with ILgenerated defects. By adjusting two factors, the amount of IL and autoclave time, we were able to fabricate hexagonal-shaped ferromagnetic 2D nanostructures with Fe adatom defects. These hexagonal-shaped flakes were found to be multiphase, consisting of both Fe 2 O 3 (hematite), which has a space group of R3̅ c (hexagonal structure), and Fe 3 O 4 (magnetite), which has a space group of Fd3̅ m (cubic structure). According to the photoelectron spectroscopy (XPS) study, the high hydroxyl oxygen content and the high likelihood of producing Fe(OH) 2 resulted in the production of a hexagonal structure with an ideal shape. Even though ferromagnetic nature predominated, more Fe adatoms were present on the surface, leading to paramagnetic + Fe states. The production of leucomethylene blue (LMB) is indicated by a reversible rise in the UV−visible peaks at 202, 243, and 662 nm. A larger concentration of Fe 3+ on the catalyst surface, which forms a stable LMB-Fe 3+ complex, is directly associated with the creation of the LMB form. While challenging to isolate, LMB intermediate can form a stable complex when combined with a metal with a high oxidation state. This research also advances our understanding of the mechanisms underlying defect chemistry and the impact of ILs on solid-state crystallization's developmental morphology. Achieving a 2D hexagonal shape in our scenario was definitely feasible with a few IL under more watery and aerobic circumstances.

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