Submit to Special Issue Submit Abstract to Special Issue Review for Materials Propose a Special Issue

Journal Browser

► Journal Browser

Green Materials and Manufacturing Processes (2nd Edition)

Print Special Issue Flyer
Special Issue Editors
Special Issue Information
Keywords
Published Papers

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Green Materials".

Deadline for manuscript submissions: 20 July 2024 | Viewed by 5006

Share This Special Issue

Special Issue Editors

Prof. Dr. Stefano Guarino

E-Mail Website
Guest Editor

Faculty of Engineering, University of Rome ‘Niccolò Cusano’, Via Don Carlo Gnocchi 3, 00166 Rome, Italy
Interests: manufacturing processes; laser technologies; coatings and surface finishing and functionalization; metal foams; additive manufacturing
Special Issues, Collections and Topics in MDPI journals

Dr. Flaviana Tagliaferri

E-Mail Website1 Website2 Website3
Guest Editor

Faculty Engineering Sciences, Hochschule Mittweida—University of Applied Sciences, Mittweida, Germany
Interests: manufacturing materials; manufacturing technologies; machining; laser machining; 3D printing; DoE
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The green approach is no longer (and it can no longer be) a goal of the future, but rather it is a real and practical necessity of the present. Recently, we have finally seen an acceleration in the development and application of green materials and manufacturing processes, and the importance of environmentally responsible materials or sustainable manufacturing processes has never been higher.

The aim of this Special Issue is to focus on the most recently developed green materials and the remarkable progress/developments in manufacturing processes in order to take stock of these new trends.

Scientific contributions can focus on any alternative to traditional materials or processes that carry an environmental advantage, such as: the reduction in the use of hazardous substances in manufacture; the use of fewer natural resources; the reduction in waste and pollution, the recycle and reuse of materials, and moderate emissions in these processes.

Prof. Dr. Stefano Guarino
Dr. Flaviana Tagliaferri
Guest Editors

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. Materials 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 2600 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 materials
green manufacturing processes
waste reduction
pollution reduction
recycling
sustainable manufacturing
energy efficiency
green and smart manufacturing

Published Papers (4 papers)

Download All Papers

Research

Jump to: Review

16 pages, 6648 KiB

Open AccessArticle

Optimization of Pore Characteristics of Graphite-Based Anode for Li-Ion Batteries by Control of the Particle Size Distribution

by Yun-Jeong Choi, Young-Seak Lee, Ji-Hong Kim and Ji-Sun Im

Materials 2023, 16(21), 6896; https://doi.org/10.3390/ma16216896 - 27 Oct 2023

Viewed by 1388

Abstract

We investigate the reassembly techniques for utilizing fine graphite particles, smaller than 5 µm, as high-efficiency, high-rate anode materials for lithium-ion batteries. Fine graphite particles of two sizes (0.4–1.2 µm and 5 µm) are utilized, and the mixing ratio of the two particles is varied to control the porosity of the assembled graphite. The packing characteristics of the assembled graphite change based on the mixing ratio of the two types of fine graphite particles, forming assembled graphite with varying porosities. The open porosity of the manufactured assembled graphite samples ranges from 0.94% to 3.55%, while the closed porosity ranges from 21.41% to 26.51%. All the assembled graphite shows improved electrochemical characteristics properties compared with anodes composed solely of fine graphite particles without granulation. The sample assembled by mixing 1.2 µm and 5 µm graphite at a 60:40 ratio exhibits the lowest total porosity (27.45%). Moreover, it exhibits a 92.3% initial Coulombic efficiency (a 4.7% improvement over fine graphite particles) and a capacity of 163.4 mAh/g at a 5C-rate (a 1.9-fold improvement over fine graphite particles). Full article

(This article belongs to the Special Issue Green Materials and Manufacturing Processes (2nd Edition))

► Show Figures

Figure 1

13 pages, 8778 KiB

Open AccessArticle

Effect of Recycling on the Mechanical Properties of 6000 Series Aluminum-Alloy Sheet

by Daniele De Caro, Michele Maria Tedesco, Jaume Pujante, Andrea Bongiovanni, Giovanni Sbrega, Marcello Baricco and Paola Rizzi

Materials 2023, 16(20), 6778; https://doi.org/10.3390/ma16206778 - 20 Oct 2023

Viewed by 1168

Abstract

Sustainability is one of the biggest values of today and for the future of our society; a responsible usage of material in every sector is fundamental to achieving sustainability goals. Aluminum alloys are some of the most promising materials in terms of strength and weight, but their production implies the emission of a high amount of CO₂. For that reason, the study and development of aluminum alloys with increasing scrap content play a central role in future applications. In the current study, two sheet-aluminum 6181 alloys with different scrap content were analyzed and compared with a 6181 alloy coming from primary production. The alloys were compared in terms of chemical composition, microstructure, tensile properties, and forming behaviors. The results showed that the alloys coming from secondary productions contained a higher amount of manganese, iron, and copper. The metallurgical and mechanical behaviors were very similar to those of the primary produced alloy. Nevertheless, a drop in formability was shown in the aluminum alloys containing a high scrap amount when stressed in a biaxial condition. The study demonstrated the viability of 6181 alloy production using a high scrap amount, highlighting the main difference with the same alloy coming from primary route production. Full article

(This article belongs to the Special Issue Green Materials and Manufacturing Processes (2nd Edition))

► Show Figures

Figure 1

18 pages, 3348 KiB

Open AccessArticle

Preparation of a High-Performance Asymmetric Supercapacitor by Recycling Aluminum Paper and Filter Components of Heated Tobacco

by Ha-Yeong Kim, Suk Jekal, Chan-Gyo Kim, Jungchul Noh, Jiwon Kim, Yeon-Ryong Chu, Zambaga Otgonbayar, Won-Chun Oh, Sang Hun Lee and Chang-Min Yoon

Materials 2023, 16(19), 6454; https://doi.org/10.3390/ma16196454 - 28 Sep 2023

Viewed by 968

Abstract

In this study, Al paper and cellulose acetate (CA) filters derived from heated tobacco waste were successfully converted into current collectors and active materials for a supercapacitor device. Typically, heated tobacco contains electrically discontinuous Al paper. First, Al was extracted from the tobacco waste using HCl to produce Lewis acid (AlCl₃). This acid was then used in an Al electrodeposition process utilizing the chloroaluminate ionic liquid reaction between the acid and the base (RCl) at room temperature. To enhance the conductivity, a supplementary coating of Al metal was applied to the Al paper through electrodeposition, thus re-establishing the electrical continuity of the discontinuous parts and forming an Al-coated current collector. Moreover, the CA filters were carbonized under a nitrogen atmosphere, yielding carbon precursors (C-CA) for the supercapacitor electrodes. To further enhance the electrochemical performance, nickel oxide (NiO) was incorporated into C-CA, resulting in C-CA@NiO with pseudocapacitance. The specific surface area of CA increased with carbonization and the subsequent incorporation of NiO. The as-synthesized C-CA and C-CA@NiO materials were applied to an Al-coated current collector to obtain C-CA- and C-CA@NiO-based electrodes, exhibiting stable electrochemical behavior in the voltage range of −1.0 to 0 V and 0 to 1.0 V, respectively. An asymmetric supercapacitor (ASC) device was assembled with C-CA@NiO and C-CA as the positive and negative electrodes, respectively. This ASC device demonstrated a high specific capacitance of 40.8 F g⁻¹, while widening the operating voltage window to 2.0 V. The high electrochemical performance of the device is attributed to the successful Al electrodeposition, which facilitates the electrical conductivity and increased porosity of the C-CA@NiO and C-CA materials. To the best of our knowledge, this is a pioneering study in regards to the conversion of biomass waste into current collectors and active materials to fabricate a practical ASC device. Our findings highlight the potential of reusing Al paper and CA filters from heated tobacco waste as essential components of energy storage devices. Full article

(This article belongs to the Special Issue Green Materials and Manufacturing Processes (2nd Edition))

► Show Figures

Figure 1

Review

Jump to: Research

32 pages, 2546 KiB

Open AccessReview

Renewable Carbonaceous Materials from Biomass in Catalytic Processes: A Review

by Juan J. Villora-Picó, Judith González-Arias, Francisco M. Baena-Moreno and Tomás R. Reina

Materials 2024, 17(3), 565; https://doi.org/10.3390/ma17030565 - 25 Jan 2024

Viewed by 1140

Abstract

This review paper delves into the diverse ways in which carbonaceous resources, sourced from renewable and sustainable origins, can be used in catalytic processes. Renewable carbonaceous materials that come from biomass-derived and waste feedstocks are key to developing more sustainable processes by replacing traditional carbon-based materials. By examining the potential of these renewable carbonaceous materials, this review aims to shed light on their significance in fostering environmentally conscious and sustainable practices within the realm of catalysis. The more important applications identified are biofuel production, tar removal, chemical production, photocatalytic systems, microbial fuel cell electrodes, and oxidation applications. Regarding biofuel production, biochar-supported catalysts have proved to be able to achieve biodiesel production with yields exceeding 70%. Furthermore, hydrochars and activated carbons derived from diverse biomass sources have demonstrated significant tar removal efficiency. For instance, rice husk char exhibited an increased BET surface area from 2.2 m²/g to 141 m²/g after pyrolysis at 600 °C, showcasing its effectiveness in adsorbing phenol and light aromatic hydrocarbons. Concerning chemical production and the oxidation of alcohols, the influence of biochar quantity and pre-calcination temperature on catalytic performance has been proven, achieving selectivity toward benzaldehyde exceeding 70%. Full article

(This article belongs to the Special Issue Green Materials and Manufacturing Processes (2nd Edition))

► Show Figures