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Polymers
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Polymers for Environmental Remediation and Energy Regeneration
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Polymers for Environmental Remediation and Energy Regeneration

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Circular and Green Polymer Science".

Deadline for manuscript submissions: closed (30 September 2024) | Viewed by 3547

Special Issue Editors

Dr. Jianhao Qiu

E-Mail Website
Guest Editor
College of Chemical Engineering, Nanjing Forestry University, 210037 Nanjing, China
Interests: photocatalyst design based on biopolymers (e.g., cellulose); metal–organic frameworks; metal sulfide; covalent organic frameworks; g-C3N4; photocatalytic materials for energy and environmental applications
Special Issues, Collections and Topics in MDPI journals
Dr. Xiongfei Zhang

E-Mail Website
Guest Editor
College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
Interests: biomass; ionic hydrogels; water treatment; adsoption; polysaccharide
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nowadays, the high development of advanced technology, the energy dilemma and environmental destruction have gradually turned into troublesome issues. In this context, diverse materials and technologies must be used to relieve these problems. Polymer-based functional materials for environmental remediation and energy regeneration have aroused considerable attention due to their cost-effectiveness, functionality and structural tunability.

This Special Issue, “Polymers for Environmental Remediation and Energy Regeneration”, pursues high-quality and innovative works regarding the preparation, characterisation and application of all types of polymer-based functional materials for environmental restoration and energy conversion. The application modes include adsorption, catalysts, electrochemistry and membrane separation among others. 

Dr. Jianhao Qiu
Dr. Xiongfei Zhang
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. Polymers 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

  • polymers
  • environment
  • energy
  • catalysis
  • adsorption
  • electrochemistry
  • membrane separation

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Published Papers (3 papers)

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Research

12 pages, 3672 KiB  
Article
Amino-Functionalized Metal–Organic Framework-Mediated Cellulose Aerogels for Efficient Cr(VI) Reduction
by Fan Yang, Dandan Hao, Miaomiao Wu, Bo Fu and Xiongfei Zhang
Polymers 2024, 16(22), 3162; https://doi.org/10.3390/polym16223162 - 13 Nov 2024
Viewed by 412
Abstract
Industrialization activities have increased the discharge of wastewater that is polluted with hexavalent chromium (Cr(VI)), posing risks to ecosystems and humans. The photocatalytic reduction of Cr(VI) is viewed as a promising method for the removal of Cr(VI) species. However, developing photocatalysts with the [...] Read more.
Industrialization activities have increased the discharge of wastewater that is polluted with hexavalent chromium (Cr(VI)), posing risks to ecosystems and humans. The photocatalytic reduction of Cr(VI) is viewed as a promising method for the removal of Cr(VI) species. However, developing photocatalysts with the desired catalytic activity, recyclability, and reusability remains a challenge. Herein, a composite aerogel was designed and fabricated with a Ti-based metal–organic framework (MIL-125-NH2) and carboxylated nanocellulose. MIL-125-NH2 presents a strong visible-light response, and the interactions between the amino groups of MIL-125-NH2 and the carboxyl groups of cellulose produce a strong interface affinity in the composites. The as-prepared aerogels exhibited a micro/macroporous structure. At an optimal MIL-125-NH2 loading of 55 wt%, the MC-5 sample showed a specific surface area of 582 m2·g−1. MC-5 achieved a photocatalytic Cr(VI) removal efficiency of 99.8%. Meanwhile, the aerogel-type photocatalysts demonstrated good stability and recycling ability, as MC-5 maintained a removal rate of 82% after 10 cycles. This work sheds light on the preparation of novel photocatalysts with three-dimensional structures for environmental remediation. Full article
(This article belongs to the Special Issue Polymers for Environmental Remediation and Energy Regeneration)
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13 pages, 9730 KiB  
Article
Facile Construction of Flame-Resistant and Thermal-Insulating Sodium Alginate Aerogel Incorporating N- and P-Elements
by Ju Liu, Huanhui Zhan, Jianan Song, Chenfei Wang, Tong Zhao and Bo Fu
Polymers 2024, 16(19), 2814; https://doi.org/10.3390/polym16192814 - 4 Oct 2024
Viewed by 706
Abstract
In this study, sodium alginate (SA) aerogel cross-linked with Ca2+ was selected as the basic skeleton to construct a lightweight, flame retardant, and thermal insulating composite aerogel via modification with melamine and phytic acid. The resulting aerogel, SA-1.0 MP, achieved a thermal [...] Read more.
In this study, sodium alginate (SA) aerogel cross-linked with Ca2+ was selected as the basic skeleton to construct a lightweight, flame retardant, and thermal insulating composite aerogel via modification with melamine and phytic acid. The resulting aerogel, SA-1.0 MP, achieved a thermal conductivity as low as 0.0379 W/(m·K). Compared to pristine SA aerogel, SA-1.0 MP demonstrated improved fire resistance, evidenced by a substantial increase in the limiting oxygen index (LOI) from 21.5% to 48.8% and a V-0 rating in the UL-94 test. Furthermore, a synergistic mechanism was proposed to explain its remarkable flame-retardant capability. Full article
(This article belongs to the Special Issue Polymers for Environmental Remediation and Energy Regeneration)
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12 pages, 3569 KiB  
Article
Preparation and Evaluation of PVDF-HFP-Based Gel Electrolyte for Ge-Sensitized Thermal Cell
by Yadong Chai and Sachiko Matsushita
Polymers 2024, 16(12), 1732; https://doi.org/10.3390/polym16121732 - 18 Jun 2024
Viewed by 1815
Abstract
The semiconductor-sensitized thermal cell (STC) is a new thermoelectric conversion technology. The development of nonliquid electrolytes is the top priority for the practical application of the STC. In this study, a novel gel polymer electrolyte (PH-based GPE) composed of poly(vinylidenefluoride-co-hexafluoropropylene) (PH), [...] Read more.
The semiconductor-sensitized thermal cell (STC) is a new thermoelectric conversion technology. The development of nonliquid electrolytes is the top priority for the practical application of the STC. In this study, a novel gel polymer electrolyte (PH-based GPE) composed of poly(vinylidenefluoride-co-hexafluoropropylene) (PH), 1-Methyl-2-pyrrolidone (NMP), and Cu ions was synthesized and applied to the STC system. The PH-based GPE synthesized at 45 °C showed higher open-circuit voltage (−0.3 V), short-circuit current density (59 μA cm−2) and diffusion coefficient (7.82 × 10−12 m2 s−1), indicating that a well-balanced structure among the NMP molecules was formed to generate a high-efficiency conduction path of the Cu ions. Moreover, the ion diffusion lengths decreased with decreasing content rates of NMP for the PH-based GPEs, indicating that the NMP plays an important role in the diffusion of Cu ions. Furthermore, the activation energy was calculated to be 107 kJ mol−1, and that was smaller compared to 150 kJ mol−1 for the poly(ethylene glycol)-based liquid electrolyte. These results play an important reference role in the development of electrolytes for STC systems. At the same time, they also provide a new avenue and reference indicator for the synthesis of high-performance and safe GPEs. Full article
(This article belongs to the Special Issue Polymers for Environmental Remediation and Energy Regeneration)
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