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Molecules
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Novel Materials for Adsorption and Catalysis: Design, Synthesis and Application
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Novel Materials for Adsorption and Catalysis: Design, Synthesis and Application

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 15 July 2024 | Viewed by 922

Special Issue Editor

Dr. Chirangano Mangwandi

E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Queen’s University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, UK
Interests: particle engineering; adsorption; drug delivery; functional materials; water treatment

Special Issue Information

Dear Colleagues,

The Special Issue entitled "Novel Materials for Adsorption and Catalysis: Design, Synthesis and Application" focuses on the latest developments in the field of adsorption and catalysis for various applications, including drug delivery, effluent treatment, and catalysis. This Special Issue highlights the design, synthesis, and application of innovative materials that can be utilized for adsorption and catalytic processes. The articles contained herein provide an in-depth analysis of various materials such as zeolites, metal-organic frameworks, and other porous materials, exploring their unique properties and their potential applications in drug delivery, effluent treatment, catalysis, and other areas. Additionally, the Special Issue covers topics such as the molecular engineering of materials, the role of surface chemistry in adsorption and catalysis, and the use of computational methods in material design. Overall, this Special Issue presents an exciting array of research findings and insights that will be of interest to researchers, engineers, and professionals working in the fields of adsorption, catalysis, drug delivery, effluent treatment, and related areas.

Dr. Chirangano Mangwandi
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • adsorption
  • catalysis
  • novel materials
  • material design

Published Papers (1 paper)

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Research

18 pages, 6178 KiB  
Article
Kinetics and Thermodynamics Study on Removal of Cr(VI) from Aqueous Solutions Using Acid-Modified Banana Peel (ABP) Adsorbents
by Zhouyang Huang, Robyn Campbell and Chirangano Mangwandi
Molecules 2024, 29(5), 990; https://doi.org/10.3390/molecules29050990 - 24 Feb 2024
Viewed by 650
Abstract
Banana peel waste is abundant and can be utilized as a low-cost adsorbent for removing toxic Cr (VI) from wastewater. The acid modification of banana peels significantly enhances their adsorption capacity for Cr (VI). An adsorbent was prepared by treating banana peel powder [...] Read more.
Banana peel waste is abundant and can be utilized as a low-cost adsorbent for removing toxic Cr (VI) from wastewater. The acid modification of banana peels significantly enhances their adsorption capacity for Cr (VI). An adsorbent was prepared by treating banana peel powder with 50% H2SO4 at 50 °C for 24 h. The acid treatment increased the surface area of the adsorbent from 0.0363 to 0.0507 m2/g. The optimum adsorbent dose was found to be 1 g/L for the complete removal of Cr (VI) from 100 ppm solutions. The adsorption capacity was 161 mg/g based on the Langmuir isotherm model. The adsorption kinetics followed a pseudo-second order model. Increasing the temperature from 20 to 50 °C increased the initial adsorption rate but had a minor effect on the equilibrium adsorption capacity. Thermodynamics studies showed that the process was spontaneous and endothermic. The activation energy was estimated as 24.5 kJ/mol, indicating physisorption. FTIR analyses before and after adsorption showed the involvement of hydroxyl, carbonyl and carboxyl groups in binding the Cr (VI). The Cr (VI) was reduced to Cr (III), which then bound to functional groups on the adsorbent. Desorption under acidic conditions could recover 36% of the adsorbed Cr as Cr (III). No desorption occurred at a neutral pH, indicating irreversible adsorption. Overall, acid-modified banana peel is an efficient, low-cost and eco-friendly adsorbent for removing toxic Cr (VI) from wastewater. Full article
(This article belongs to the Special Issue Novel Materials for Adsorption and Catalysis: Design, Synthesis and Application)
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