Ayman Nafady

ORCID: 0000-0003-1484-6894
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About
Contact & Profiles
Research Areas
  • Metal-Organic Frameworks: Synthesis and Applications
  • Electrochemical Analysis and Applications
  • Electrochemical sensors and biosensors
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Electrocatalysts for Energy Conversion
  • Advanced Photocatalysis Techniques
  • Covalent Organic Framework Applications
  • Advanced battery technologies research
  • Conducting polymers and applications
  • Organic and Molecular Conductors Research
  • Analytical Chemistry and Sensors
  • Supercapacitor Materials and Fabrication
  • Magnetism in coordination complexes
  • Advanced biosensing and bioanalysis techniques
  • Crystallography and molecular interactions
  • Gas Sensing Nanomaterials and Sensors
  • Nanomaterials for catalytic reactions
  • Metal complexes synthesis and properties
  • Organoboron and organosilicon chemistry
  • ZnO doping and properties
  • Nanoparticles: synthesis and applications
  • Catalytic Processes in Materials Science
  • MXene and MAX Phase Materials
  • Organometallic Complex Synthesis and Catalysis

King Saud University
2016-2025

Sohag University
2014-2025

University of Sindh
2022

Bridge University
2021

Minia University
2020

Assiut University
2020

Riyadh Elm University
2015-2019

Monash University
2007-2017

Australian Regenerative Medicine Institute
2007-2015

Clayton Foundation
2015

Highly photoactive MOFs can be engineered <italic>via</italic> various strategies for the purpose of extended visible light absorption, more efficient generation, separation and transfer charge carriers, as well good recyclability.

10.1039/c9qi01120j article EN Inorganic Chemistry Frontiers 2019-10-30

Abstract Porous materials with open metal sites have been investigated to separate various gas mixtures. However, show the limitation in separation of some challenging mixtures, such as C 2 H /CO . Herein, we propose a new type ultra‐strong nano‐trap based on multiple binding interactions efficiently capture molecules and mixture. The acetylene shows benchmark Q st 79.1 kJ mol −1 for , record high pure uptake 2.54 mmol g at 1×10 −2 bar, highest selectivity (53.6), making it material...

10.1002/anie.202016225 article EN Angewandte Chemie International Edition 2021-01-07

Industrial synthesis is driven by a delicate balance of the value product against cost production. Catalysts are often employed to ensure turnover economically favorable ensuring energy use minimized. One method, which gaining attention, involves cooperative catalytic systems. By inserting flexible polymer into metal-organic framework (MOF) host, advantages both components work synergistically create composite that efficiently fixes carbon dioxide transform various epoxides cyclic...

10.1002/anie.201803081 article EN Angewandte Chemie International Edition 2018-05-16

Herein, we show how the spatial environment in functional pores of covalent organic frameworks (COFs) can be manipulated order to exert control catalysis. The underlying mechanism this strategy relies on placement linear polymers pore channels that are anchored with catalytic species, analogous outer-sphere residue cooperativity within active sites enzymes. This approach benefits from flexibility and enriched concentration moieties polymers, enabling desired reaction close proximity sites,...

10.1002/anie.201900029 article EN Angewandte Chemie International Edition 2019-04-08

Titanium metal-organic frameworks (Ti-MOFs), as an appealing type of artificial photocatalyst, have shown great potential in the field solar energy conversion due to their well-studied photoredox activity (similar TiO2 ) and good optical responsiveness linkers, which serve antenna absorb visible-light. Although much effort has been dedicated developing Ti-MOFs with high photocatalytic activity, performances are still poor. Herein, we implemented a covalent-integration strategy construct...

10.1002/anie.202114071 article EN publisher-specific-oa Angewandte Chemie International Edition 2021-11-15

Abstract Herein, a dynamic spacer installation (DSI) strategy has been implemented to construct series of multifunctional metal—organic frameworks (MOFs), LIFM‐61/31/62/63, with optimized pore space and environment for ethane/ethylene separation. In this respect, linear dicarboxylic acids were deliberately installed in the prototype MOF, LIFM‐28, leading dramatically increased volume (from 0.41 0.82 cm 3 g −1 ) reduced size 11.1×11.1 Å 2 5.6×5.6 ). The endows MOFs much higher ethane...

10.1002/anie.202100114 article EN Angewandte Chemie International Edition 2021-02-05

Abstract Herein, we report a strategy to construct highly efficient perfluorooctanoic acid (PFOA) adsorbents by installing synergistic electrostatic/hydrophobic sites onto porous organic polymers (POPs). The constructed model material of PAF-1-NDMB (NDMB = N,N-dimethyl-butylamine) demonstrates an exceptionally high PFOA uptake capacity over 2000 mg g −1 , which is 14.8 times enhancement compared with its parent PAF-1. And it 32.0 and 24.1 higher than benchmark materials DFB-CDP...

10.1038/s41467-022-29816-1 article EN cc-by Nature Communications 2022-04-19

Developing adsorptive separation processes based on C2 H6 -selective sorbents to replace energy-intensive cryogenic distillation is a promising alternative for H4 purification from /C2 mixtures, which however remains challenging. During our studies two isostructural metal-organic frameworks (Ni-MOF 1 and Ni-MOF 2), we found that 2 exhibited significantly higher performance than Ni-MOF-1, as clearly established by gas sorption isotherms breakthrough experiments. Density-Functional Theory...

10.1002/anie.202302564 article EN Angewandte Chemie International Edition 2023-03-20

Hydrogenated nitrogen heterocyclic compounds play a critical role in the pharmaceutical, polymer, and agrochemical industries. Recent studies on partial hydrogenation of have focused costly toxic precious metal catalysts. As an important class main-group catalysts, frustrated Lewis pairs (FLPs) been widely applied catalytic reactions. In principle, combination FLPs metal-organic framework (MOF) is anticipated to efficiently enhance recyclability performance FLPs; however, previously studied...

10.1021/jacs.3c04929 article EN Journal of the American Chemical Society 2023-06-29

The C2H2 separation from CO2 and C2H4 is of great importance yet highly challenging in the petrochemical industry, owing to their similar physical chemical properties. Herein, pore nanospace engineering cage-like mixed-ligand MFOF-1 has been accomplished via contracting size pyridine- carboxylic acid-functionalized linkers introducing a fluoride- sulfate-bridging cobalt cluster, based on reticular chemistry strategy. Compared with prototypical MFOF-1, constructed FJUT-1 same topology...

10.1021/jacs.3c12032 article EN Journal of the American Chemical Society 2024-03-05

ABSTRACT The complexes of Pd (II), VO Cu and Ni (II) with Schiff base (ABDS) derived from 2‐aminobenzothiazole 4‐(diethylamino)salicylaldehyde have been prepared. Various spectroscopic methodologies for analysis, which might include 1 H, 13 C NMR, infrared spectra (IR), ultraviolet–visible (UV–vis), magnetic values, applied to elucidate the construction these chemicals. For each complex, most suitable form has proposed as a result. chemical compound behaves bi‐dentate via NO donors into...

10.1002/aoc.70052 article EN Applied Organometallic Chemistry 2025-02-11

Understanding the interface-induced effects of heteronanostructured catalysts remains a significant challenge due to their structural complexity, but it is crucial for developing novel applied catalytic materials. This work reports systematic characterization and evaluation MnOx nanoparticle-dispersed CeO2 nanocubes two important industrial applications, namely, diesel soot oxidation continuous-flow benzylamine oxidation. The X-ray diffraction Raman studies reveal an unusual lattice...

10.1021/acsami.5b03988 article EN ACS Applied Materials & Interfaces 2015-07-27

This work describes a facile approach to modify metal-organic frameworks (MOFs) with ionic liquids (ILs), rendering them as useful heterogeneous catalysts for CO2 chemical fixation. An amino-functionalized imidazolium-based liquid is firmly grafted into the porous MOF, MIL-101-SO3H by acid-base attraction between positively charged ammonium groups on IL and negatively sulfonate from MOF. Analyses Fourier transform infrared spectroscopy, X-ray photoelectron 1H NMR, N2 sorption experiments...

10.1021/acsami.8b08914 article EN ACS Applied Materials & Interfaces 2018-07-17

This work investigates the structure–activity properties of CuOx-decorated CeO2 nanocubes with a meticulous scrutiny on role CuOx/CeO2 nanointerface in catalytic oxidation diesel soot, critical environmental problem all over world. For this, systematic characterization materials has been undertaken using transmission electron microscopy (TEM), microscopy–energy-dispersive X-ray spectroscopy (TEM–EDS), high-angle annular dark-field–scanning (HAADF–STEM), scanning microscopy–electron energy...

10.1021/acs.langmuir.5b04590 article EN Langmuir 2016-02-17

The developed ceria–zirconia modified MnO<sub>x</sub> catalysts were found to exhibit enhanced Hg<sup>0</sup> oxidation and removal performance.

10.1039/c5cy01534k article EN Catalysis Science & Technology 2015-10-19

In the present work, nanowire morphologies of α-MnO2, cobalt monodoped Cu and Co bidoped Ni α-MnO2 samples were prepared by a facile hydrothermal synthesis. The structural, morphological, surface, redox properties all as-prepared investigated various characterization techniques, namely, scanning electron microscopy (SEM), transmission high resolution (TEM HR-TEM), powder X-ray diffraction (XRD), N2 sorption surface area measurements, photoelectron spectroscopy (XPS),...

10.1021/acsami.7b07656 article EN ACS Applied Materials & Interfaces 2017-09-01

Atomically dispersed metal catalysts anchored on nitrogen-doped (N-doped) carbons demand attention due to their superior catalytic activity relative that of nanoparticle in energy storage and conversion processes. Herein, we introduce a simple versatile strategy for the synthesis hollow N-doped carbon capsules contain one or more atomically metals (denoted as H–M–Nx–C H–Mmix–Nx–C, respectively, where M = Fe, Co, Ni). This method utilizes pyrolysis nanostructured core–shell precursors...

10.1021/acsnano.9b02930 article EN ACS Nano 2019-06-19
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