Special Issue "Synthesis and Applications of Metal-Organic Frameworks (MOFs)"

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: 22 April 2022.

Special Issue Editors

Dr. Stephen David Worrall
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Guest Editor
Aston Institute of Materials Research, Aston University, Birmingham, UK
Interests: MOFs; electrochemistry; 2D materials; nanoporous materials; advanced materials; nanocomposites; thin film deposition; material characteristics; atmospheric chemistry
Dr. Julia Linnemann
E-Mail
Guest Editor
Junior Research Group Shape-dependent electrochemistry, Chair of Analytical Chemistry II, Ruhr-University Bochum, Bochum, Germany
Interests: shape-dependent electrochemistry; energy storage and conversion; analytical electrochemical characterization; single-entity electrochemistry; electrochemical fabrication of 3-dimensional electrode architectures and coatings of functional materials such as metal-organic frameworks

Special Issue Information

Dear Colleagues,

Nanoporous metal–organic frameworks (MOFs) have generated huge research interest in a wide range of fields since their discovery at the turn of the millennium. Whilst this in part due to their record-breaking surface areas and porous volumes, their modular nature, providing almost limitless opportunities for chemical modification and functionalization, has widened their appeal to an even broader range of potential applications.

Many of these potential applications necessitate the MOF to be in the form of a thin film coating; as traditional solvothermal synthesis techniques are ill-equipped to meet this need, this has spurred research efforts in the development of alternative synthesis strategies. In particular, over the last decade, a variety of electrochemical methods for MOF synthesis have been developed, all with their own pros and cons. Work remains to be done in order to broaden the applicability of these methods to the synthesis of the huge family of MOF structures as well as to enable application-oriented designed film properties, e.g., by controlling crystal sizes, shape and intergrowth.

Electrochemical synthesis methods naturally yield MOFs as thin film coatings on conductive substrates, which is hugely advantageous for research into the potential electrochemical applications of MOFs. There is significant literature reporting the use of MOFs in a wide range of electrical applications, including supercapacitors, battery electrodes, electrochemical sensing and data storage, to name just a few, both in their “pure” MOF and also where they have been used as the precursor for the formation of porous carbons or porous metal oxides.

In this Special Issue, we seek to discuss the most recent advances both in the electrochemical synthesis of MOFs (including novel methods, adaptations of existing methods for specific MOFs and research into the understanding of the mechanisms behind the different methods) and in their use for any and all electrochemical and electrical applications (as pure MOF, in the form of composites or as a precursor for other porous materials). In this regard, studies addressing how structural and morphological properties of MOF crystals and the respective films they constitute relate to electrochemical performance are also highly appreciated.

Dr. Stephen David Worrall
Dr. Julia Linnemann
Guest Editors

Manuscript Submission Information

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Keywords

  • metal–organic framework
  • MOF
  • electrochemical synthesis
  • anodic dissolution
  • cathodic deposition
  • electrophoretic deposition
  • supercapacitors
  • batteries
  • electrochemical sensing
  • data storage
  • electrochemical applications

Published Papers (3 papers)

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Research

Article
Controllable Synthesis of 1, 3, 5-tris (1H-benzo[d]imidazole-2-yl) Benzene-Based MOFs
Appl. Sci. 2021, 11(21), 9856; https://0-doi-org.brum.beds.ac.uk/10.3390/app11219856 - 21 Oct 2021
Cited by 1 | Viewed by 429
Abstract
The growing interest in metal–organic frameworks (MOFs) in both industrial and scientific circles has increased in the last twenty years, owing to their crystallinity, structural versatility, and controlled porosity. In this study, we present three novel MOFs obtained from the 1, 3, 5-tris [...] Read more.
The growing interest in metal–organic frameworks (MOFs) in both industrial and scientific circles has increased in the last twenty years, owing to their crystallinity, structural versatility, and controlled porosity. In this study, we present three novel MOFs obtained from the 1, 3, 5-tris (1H-benzo[d]imidazole-2-yl) benzene (TIBM) organic linker. The formed TIBM crystal powders were characterized by scanning electron microscopy (SEM) to estimate the morphology of the particles, powder X-ray diffraction (XRD) to confirm the crystal structure, Brunauer–Emmett–Teller (BET) method for structural analysis, and thermogravimetric measurements to examine the thermal stability. The TIBM-Cu MOF showed excellent CO2 (3.60 mmol/g) adsorption capacity at 1 bar and 298 K, because of the open Cu site, compared to TIBM-Cr (1.6 mmol/g) and TIBM-Al (2.1 mmol/g). Additionally, due to the high porosity (0.3–1.5 nm), TIBM-Cu MOF showed a considerable CO2/N2 selectivity (53) compared to TIBM-Al (35) and TIBM-Cr (10). Full article
(This article belongs to the Special Issue Synthesis and Applications of Metal-Organic Frameworks (MOFs))
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Article
Preparation and Application of ZIF-8 Thin Layers
Appl. Sci. 2021, 11(9), 4041; https://0-doi-org.brum.beds.ac.uk/10.3390/app11094041 - 29 Apr 2021
Cited by 1 | Viewed by 934
Abstract
Herein we compare various preparation methods for thin ZIF-8 layers on a Cu substrate for application as a host material for omniphobic lubricant-infused surfaces. Such omniphobic surfaces can be used in thermal engineering applications, for example to achieve dropwise condensation or anti-fouling and [...] Read more.
Herein we compare various preparation methods for thin ZIF-8 layers on a Cu substrate for application as a host material for omniphobic lubricant-infused surfaces. Such omniphobic surfaces can be used in thermal engineering applications, for example to achieve dropwise condensation or anti-fouling and anti-icing surface properties. For these applications, a thin, conformal, homogeneous, mechanically and chemically stable coating is essential. In this study, thin ZIF-8 layers were deposited on a Cu substrate by different routes, such as (i) electrochemical anodic deposition on a Zn-covered Cu substrate, (ii) doctor blade technique for preparation of a composite layer containing PVDF binder and ZIF-8, as well as (iii) doctor blade technique for preparation of a two-layer composite on the Cu substrate containing a PVDF-film and a ZIF-8 layer. The morphology and topography of the coatings were compared by using profilometry, XRD, SEM and TEM techniques. After infusion with a perfluorinated oil, the wettability of the surfaces was assessed by contact angle measurements, and advantages of each preparation method were discussed. Full article
(This article belongs to the Special Issue Synthesis and Applications of Metal-Organic Frameworks (MOFs))
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Article
Electrosynthesis of HKUST-1 with Flow-Reactor Post-Processing
Appl. Sci. 2021, 11(8), 3340; https://0-doi-org.brum.beds.ac.uk/10.3390/app11083340 - 08 Apr 2021
Cited by 3 | Viewed by 639
Abstract
Electrochemical synthesis has been proposed as an efficient method for cost-effective and large-scale production of metal-organic frameworks (MOFs). This work investigates the combined electrochemical synthesis with flow synthesis post-treatment for the production of high surface area HKUST-1. The electrochemical synthesis process used in [...] Read more.
Electrochemical synthesis has been proposed as an efficient method for cost-effective and large-scale production of metal-organic frameworks (MOFs). This work investigates the combined electrochemical synthesis with flow synthesis post-treatment for the production of high surface area HKUST-1. The electrochemical synthesis process used in the experimental work did not require additional electrolytes or washing of the synthesis product. Batch electrosynthesis and electrosynthesis with flow synthesis were compared for the quality of the product using Brunauer–Emmett–Teller (BET) surface area, X-ray diffraction (XRD), and scanning electron microscopy (EIS). Batch electrosynthesis in 0.01 M benzene-1,3,5-tricarboxylic acid (H3BTC) solution produced HKUST-1 with BET surface area of 1550 m2/g which was increased further to 1716 m2/g with post-flow-synthesis treatment. The greatest change in surface area after flow processing was observed when using 0.78 M H3BTC, with corresponding surface areas of 481 m2/g and 1531 m2/g. According to SEM and BET results, the product purity improved during the post-flow-synthesis treatment. The proposed method enables continuous flow synthesis of high-quality MOFs with minimal purification steps. Full article
(This article belongs to the Special Issue Synthesis and Applications of Metal-Organic Frameworks (MOFs))
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