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Green and Sustainable Catalysts

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Chemical Engineering and Technology".

Deadline for manuscript submissions: closed (31 January 2018) | Viewed by 16955

Special Issue Editor

Special Issue Information

Dear Colleagues,

Growing concerns of environmental pollution and global warming have directed the attention of scientists around the world towards approaches that are environmentally greener and more eco-friendly than present ones. There is a great deal of work carried out in this area of research and has been published in various journals. Green and sustainable catalysts are the one class of catalysts that are prepared using environmentally-benign preparation techniques and/or that possess higher activity and selectivity, efficient recovery from reaction medium, recyclability and cost effectiveness. The other green approach is preparation of organic moieties via enzymatic synthesis, wherein the hazardous reagents are replaced by enzymes that generally mimic the biosynthetic pathway in-order to produce the desired organic molecules.

This Special Issue focuses on the topic “Green and Sustainable Catalysts”, with the aim of presenting a collection of articles that are related to green synthesis, employing plant extracts, ionic liquids, sonication, microwave etc., and enzymes and marine micro-organism-based methodologies and their applications in various fields, such as catalysis, solar energy, etc. We invite papers from multiple disciplines to engage with the topics mentioned above, however we are particularly interested in articles related to considering:

  • Green synthesis of nanoparticles employing plant extracts
  • Green synthesis of nanoparticles employing marine micro-organisms
  • Synthesis employing ultrasound
  • Synthesis employing microwave
  • Synthesis employing ionic liquid
  • Chemo-enzymatic synthesis of various organic moieties

Papers selected for this Special Issue will be subject to a peer review procedure with the aim of rapid and wide dissemination of their contents.

Prof. Dr. Syed Farooq Adil
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. Sustainability 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 2400 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

  • Green synthesis
  • Plant extracts
  • Marine micro-organisms
  • Sonochemical
  • Microwave
  • Biotransformations
  • Chemo-enzymatic synthesis

Published Papers (2 papers)

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Research

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14 pages, 1778 KiB  
Article
Plant-Extract-Assisted Green Synthesis of Silver Nanoparticles Using Origanum vulgare L. Extract and Their Microbicidal Activities
by Mohammed Rafi Shaik, Mujeeb Khan, Mufsir Kuniyil, Abdulrahman Al-Warthan, Hamad Z. Alkhathlan, Mohammed Rafiq H. Siddiqui, Jilani P. Shaik, Anis Ahamed, Adeem Mahmood, Merajuddin Khan and Syed Farooq Adil
Sustainability 2018, 10(4), 913; https://doi.org/10.3390/su10040913 - 22 Mar 2018
Cited by 224 | Viewed by 12210
Abstract
Plant-mediated green synthesis of nanomaterials has been increasingly gaining popularity due to its eco-friendly nature and cost-effectiveness. In the present study, we synthesized silver nanoparticles (AgNPs) by using an aqueous solution of Saudi Origanum vulgare L. plant extract as a bioreducing agent. The [...] Read more.
Plant-mediated green synthesis of nanomaterials has been increasingly gaining popularity due to its eco-friendly nature and cost-effectiveness. In the present study, we synthesized silver nanoparticles (AgNPs) by using an aqueous solution of Saudi Origanum vulgare L. plant extract as a bioreducing agent. The as-synthesized AgNPs were characterized using various microscopic and spectroscopic techniques. The results indicated the formation of crystalline face-centered cubic (fcc) AgNPs. Additionally, FT-IR study confirmed that the O. vulgare L. extract not only functioned as a bioreductant but also stabilized the surface of the AgNPs by acting as a capping agent. Moreover, the effect of the amount of the plant extract on the size and the antimicrobial activity of the NPs was also assessed. It was found that with increasing amounts of plant extract, the size of the NPs was decreased. Moreover, as-synthesized AgNPs as well as O. vulgare L. plant extract were separately tested to examine their antimicrobial activities. The activities were tested against various bacterial and fungal microorganisms including Shigella sonnei, Micrococcus luteus, Escherichia coli, Aspergillus flavus, Alternaria alternate, Paecilomyces variotii, Phialophora alba, and so on. These results evidently show that the inclusion of O. vulgare L. extracts improves the solubility of AgNPs, which led to a significant enhancement in the toxicity of the NPs against the assessed microorganisms. Full article
(This article belongs to the Special Issue Green and Sustainable Catalysts)
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Review

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20 pages, 2558 KiB  
Review
Erbium Salts as Non-Toxic Catalysts Compatible with Alternative Reaction Media
by Manuela Oliverio, Monica Nardi, Paola Costanzo, Maria Luisa Di Gioia and Antonio Procopio
Sustainability 2018, 10(3), 721; https://doi.org/10.3390/su10030721 - 06 Mar 2018
Cited by 15 | Viewed by 3557
Abstract
Green catalysts must be non-toxic, easy to manage, able to be recovered and reused, active under alternative reaction conditions and cheap. Erbium salts meet all the previously listed characteristics and today they are emerging as a valuable catalytic solution to a number of [...] Read more.
Green catalysts must be non-toxic, easy to manage, able to be recovered and reused, active under alternative reaction conditions and cheap. Erbium salts meet all the previously listed characteristics and today they are emerging as a valuable catalytic solution to a number of organic transformations needing a Lewis acid catalyst in wet conditions or under alternative heating sources. This review aims to summarize the application of erbium salts in green organic transformations, with particular emphasis on their versatility under both homogeneous and heterogeneous conditions. The erbium salts’ role in bifunctional catalysis is also presented. Full article
(This article belongs to the Special Issue Green and Sustainable Catalysts)
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