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Nanomaterials
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Multifunctional Nanocellulose Structures for Environmental and Energy Research
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Multifunctional Nanocellulose Structures for Environmental and Energy Research

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Environmental Nanoscience and Nanotechnology".

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 2140

Special Issue Editor

Dr. Wei Zhang

E-Mail Website1 Website2
Guest Editor
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
Interests: nanofibers; UHMWPE fibers; electrospinning; gel spinning; 3D printing; polymer composites; water treatment; biomaterials; energy storage materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Cellulose is the most abundant natural polymer available worldwide. Owing to its renewable, biodegradable, and inexhaustible attributes, cellulose has been expected to become a key source of sustainable materials on an industrial scale. In the past decade, nanocellulose has attracted great research interest. Compared with ordinary cellulose mostly in the micron size, nanocellulose exhibits many other unique characteristics, such as large specific surface area, high aspect ratio, excellent mechanical properties, superior hydrophilicity, and ease of chemical modification, which provide it with great potential for use as the precursor to produce multifunctional materials, particularly for environmental and energy applications. Using diverse chemical reactions to modify the surface properties of nanocellulose coupled with different processing technologies to fine tune the microstructures, various high-performance energy and environmental materials have been successfully demonstrated, including 1D fibers, 2D membranes, and 3D aerogels. This Special Issue is dedicated to promote outstanding researches concerning all aspects of multifunctional nanocellulose in environmental and energy research, focusing on the state-of-the-art in progress, developments, and new trends. Perspectives, review articles, full paper, short communication, and technical papers on this topic are all welcome.

Dr. Wei Zhang
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. Nanomaterials 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 2900 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

  • nanocellulose
  • water treatment
  • energy storage material
  • electrospinning
  • aerogel
  • heavy metal/dye/eutrophic ion removal
  • oil/water separation
  • supercapacitor
  • battery
  • triboelectric nanogenerator

Published Papers (2 papers)

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Research

10 pages, 3787 KiB  
Article
Mechanically Strong and Electrically Conductive Polyethylene Oxide/Few-Layer Graphene/Cellulose Nanofibrils Nanocomposite Films
by Mei Li, Meijie Xiao, Qunhao Wang, Jian Zhang, Xiaolin Xue, Jiangqi Zhao, Wei Zhang and Canhui Lu
Nanomaterials 2022, 12(23), 4152; https://doi.org/10.3390/nano12234152 - 23 Nov 2022
Cited by 1 | Viewed by 1104
Abstract
In this work, a cellulose nanofibrils (CNFs)/few-layer graphene (FLG) hybrid is mechanically stripped from bamboo pulp and expanded graphene (EG) using a grinder. This strategy is scalable and environmentally friendly for high-efficiency exfoliation and dispersion of graphene in an aqueous medium. The in [...] Read more.
In this work, a cellulose nanofibrils (CNFs)/few-layer graphene (FLG) hybrid is mechanically stripped from bamboo pulp and expanded graphene (EG) using a grinder. This strategy is scalable and environmentally friendly for high-efficiency exfoliation and dispersion of graphene in an aqueous medium. The in situ-generated CNFs play a key role in this process, acting as a “green” dispersant. Next, the obtained CNFs-FLG is used as a functional filler in a polyoxyethylene (PEO) matrix. When the composition of CNFs-FLG is 50 wt.%, the resultant PEO/CNFs-FLG nanocomposite film exhibits a Young’s modulus of 1.8 GPa and a tensile strength of 25.7 MPa, showing 480% and 260% enhancement as compared to those of the pure PEO film, respectively. Remarkably, the incorporation of CNFs-FLG also provides the nanocomposite films with a stunning electrical conductivity (72.6 S/m). These attractive features make PEO/CNFs-FLG nanocomposite films a promising candidate for future electronic devices. Full article
(This article belongs to the Special Issue Multifunctional Nanocellulose Structures for Environmental and Energy Research)
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16 pages, 14670 KiB  
Article
Dielectric Strength of Nanofluid-Impregnated Transformer Solid Insulation
by Daniel Pérez-Rosa, Andrés Montero, Belén García and Juan Carlos Burgos
Nanomaterials 2022, 12(23), 4128; https://doi.org/10.3390/nano12234128 - 22 Nov 2022
Cited by 3 | Viewed by 1191
Abstract
The interest in developing new fluids that can be used as dielectric liquids for transformers has driven the research on dielectric nanofluids in the last years. A number of authors have reported promising results on the electrical and thermal properties of dielectric nanofluids. [...] Read more.
The interest in developing new fluids that can be used as dielectric liquids for transformers has driven the research on dielectric nanofluids in the last years. A number of authors have reported promising results on the electrical and thermal properties of dielectric nanofluids. Less attention has been paid to the interaction of these fluids with the cellulose materials that constitute the solid insulation of the transformers. In the present study, the dielectric strength of cellulose insulation is investigated, comparing its behavior when it is impregnated with transformer mineral oil and when it is impregnated with a dielectric nanofluid. The study includes the analysis of the AC breakdown voltage and the impulse breakdown voltage of the samples. Large improvements were observed on the AC breakdown voltages of the specimens impregnated with nanofluids, while the enhancements were lower in the case of the impulse tests. The reasons for the increase in AC breakdown voltage were investigated, considering the dielectric properties of the nanofluids used to impregnate the samples of cellulose. The analysis was completed with a finite element study that revealed the effect of the nanoparticles on the electric field distribution within the test cell, and its role in the observed enhancement. Full article
(This article belongs to the Special Issue Multifunctional Nanocellulose Structures for Environmental and Energy Research)
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