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Nanomaterials
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Self-Assembled Nanocomposites and Nanostructures for Environmental and Energic Applications
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Self-Assembled Nanocomposites and Nanostructures for Environmental and Energic Applications

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

Deadline for manuscript submissions: 10 September 2024 | Viewed by 3561

Special Issue Editors

Prof. Dr. Tifeng Jiao

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Guest Editor
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
Interests: self-assembled films; hydrogel; photocatalyst; electrocatalysis; composite material; wastewater treatment
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Byoung-Suhk Kim

E-Mail Website
Guest Editor
Department of Organic Materials & Fiber Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeollabuk-do, Republic of Korea
Interests: electrochemical energy storage and conversion system; energy nanomaterials; nanocarbons and carbon fibers; functional nanofibers; supercapacitors; electrocatalysts; metal nanoparticles; biosensors; fuel cells; layer-by-layer self-assembled thin films and capsules; nanostructured molecular nanocomposites; hydrogels; hybrid POSS materials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Peizhi Guo

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Guest Editor
Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
Interests: colloidal nanocrystal; assembly; electrocatalysis; surfactant; alloy
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Bingbing Li

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Guest Editor
Department of Chemistry and Biochemistry, Central Michigan University, Mount Pleasant, MI 48859, USA
Interests: electrospin film; polymer characterization; self-assembly; biosensor; vesicle
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Self-assembled nanocomposites and nanostructures are currently attracting considerable interest from the fields of environment and energy due to their chemical structures and components/functional groups. The variety of self-assembled nanostructured materials and composites (particles, films, gels, composites, etc.) display significantly different relative chemical reactions and modifications, as well as application performance (e.g., new chemical reactions, organic semiconductors, photovoltaic technology, photocatalysts, biosensors, and energy materials for fuel cells and batteries). However, the use of functionalized nanocomposites with controllable chemical reactions and modifications as important bottom–up approaches is still a great challenge. The chemical functionalization and self-assembly of nanocomposites and the subsequent environmental and energic applications of well-defined micro/nanostructures have multiple important impacts. In this sense, research into sophisticated self-assembled nanocomposites with new chemical reactions or synthesis processes is helping to deepen our insight into nanomaterials. In this Special Issue, we cordially invite investigators to contribute original research and review articles that will improve our understanding of the key scientific and technological problems in new chemical reactions and modifications, as well as relative environmental/energic applications of self-assembled nanocomposites and nanostructures. Potential topics include, but are not limited to, the following:

  • New chemical reactions/synthesis routes for inorganic–organic hybrid nanomaterials;
  • New chemical modifications/functions in self-assembled organic or inorganic–organic hybrid nanomaterials;
  • Synthesis, physical and chemical characterization of multidimensional nanocomposite materials (Langmuir–Blodgett (LB) films, hydrogels, electrospun films, vesicle and micelles, etc.) with smart chemical components;
  • Applications of chemically modified photocatalytic nanomaterials in environmental purification, hydrogen production, and dye-sensitized solar cells;
  • Theoretical and experimental understanding of the relationship of chemical molecular structures and performance of related materials.

Prof. Dr. Tifeng Jiao
Prof. Dr. Byoung-Suhk Kim
Prof. Dr. Peizhi Guo
Prof. Dr. Bingbing Li
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. 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

  • nanocomposites
  • nanostructures
  • self-assembly
  • photocatalyst
  • biosensors
  • energy materials

Published Papers (4 papers)

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Research

13 pages, 7829 KiB  
Article
Fabrication of Self-Assembled BiFeO3/CeO2 Nanocatalytic Materials for Efficient Catalytic Dye Degradation
by Lin Li, Qi Li, Dongqing Wang, Yubo Zhang, Fei Li, Yaru Zhang and Tifeng Jiao
Nanomaterials 2023, 13(18), 2545; https://doi.org/10.3390/nano13182545 - 12 Sep 2023
Viewed by 767
Abstract
The catalytic treatment of wastewater serves as an effective way to solve the problem of water pollution, in which non-homogeneous Fenton catalysts are widely used. However, the activity enhancement of non-homogeneous Fenton catalysts still remains a great challenge. Herein, self-assembled BiFeO3/CeO [...] Read more.
The catalytic treatment of wastewater serves as an effective way to solve the problem of water pollution, in which non-homogeneous Fenton catalysts are widely used. However, the activity enhancement of non-homogeneous Fenton catalysts still remains a great challenge. Herein, self-assembled BiFeO3/CeO2 nanocatalytic materials with different molar ratios were successfully fabricated by a suspension blending method, following which the structure evolution was determined by various characterizations. The catalytic degradation of methylene blue (MB), rhodamine B (RhB), and saffron T (ST) were performed over the BiFeO3/CeO2 nanocatalytic materials. It was found that the 0.2BiFeO3:0.8CeO2 nanocatalytic materials exhibited an 80.8% degradation efficiency for RhB. The 0.6BiFeO3:0.4CeO2 nanocatalytic materials reached 81.1% and 48.7% for ST and MB, respectively. The BiFeO3/CeO2 nanocatalytic materials also showed a good stability during several cycles. The combination of CeO2 with BiFeO3 led to an enhanced activity for dye degradation, probably due to the electron transfer from ≡Fe2+ to ≡Ce4+. This study provides a new approach to dye degradation by using Fenton catalytic systems. Full article
(This article belongs to the Special Issue Self-Assembled Nanocomposites and Nanostructures for Environmental and Energic Applications)
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10 pages, 1661 KiB  
Article
Alkali-Etched NiCoAl-LDH with Improved Electrochemical Performance for Asymmetric Supercapacitors
by Liyin Hou, Xufeng Zhou, Lina Kong, Zhipeng Ma, Li Su, Zhaoping Liu and Guangjie Shao
Nanomaterials 2023, 13(7), 1192; https://doi.org/10.3390/nano13071192 - 27 Mar 2023
Cited by 5 | Viewed by 1122
Abstract
Hydrotalcite, first found in natural ores, has important applications in supercapacitors. NiCoAl-LDH, as a hydrotalcite-like compound with good crystallinity, is commonly synthesized by a hydrothermal method. Al3+ plays an important role in the crystallization of hydrotalcite and can provide stable trivalent [...] Read more.
Hydrotalcite, first found in natural ores, has important applications in supercapacitors. NiCoAl-LDH, as a hydrotalcite-like compound with good crystallinity, is commonly synthesized by a hydrothermal method. Al3+ plays an important role in the crystallization of hydrotalcite and can provide stable trivalent cations, which is conducive to the formation of hydrotalcite. However, aluminum and its hydroxides are unstable in a strong alkaline electrolyte; therefore, a secondary alkali treatment is proposed in this work to produce cation vacancies. The hydrophilicity of the NiCoAl-OH surface with cation vacancy has been greatly improved, which is conducive to the wetting and infiltration of electrolyte in water-based supercapacitors. At the same time, cation vacancies generate a large number of defects as active sites for energy storage. As a result, the specific capacity of the NiCoAl-OH electrode after 10,000 cycles can be maintained at 94.1%, which is much better than the NiCoAl-LDH material of 74%. Full article
(This article belongs to the Special Issue Self-Assembled Nanocomposites and Nanostructures for Environmental and Energic Applications)
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13 pages, 4066 KiB  
Article
Preparation and Antibacterial Properties of a Composite Fiber Membrane Material Loaded with Cationic Antibacterial Agent by Electrospinning
by Lin Li, Chengfu Zhang, Lina Tian, Zihang Wu, Dongqing Wang and Tifeng Jiao
Nanomaterials 2023, 13(3), 583; https://doi.org/10.3390/nano13030583 - 01 Feb 2023
Cited by 6 | Viewed by 1728
Abstract
Microbial infections due to bacteria, viruses, and molds are a serious threat to both human life and the health of other organisms. To develop inexpensive, easy-to-prepare, efficient, and portable nano-antibacterial materials, as well as to explore the antibacterial prospects of cationic antibacterial agents, [...] Read more.
Microbial infections due to bacteria, viruses, and molds are a serious threat to both human life and the health of other organisms. To develop inexpensive, easy-to-prepare, efficient, and portable nano-antibacterial materials, as well as to explore the antibacterial prospects of cationic antibacterial agents, in this work, six different membrane materials were prepared by the electrostatic spinning method and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared (FT-IR). The materials were tested for antimicrobial properties using a modified AATCC100-200 test method. Under the most suitable spinning conditions, the doping amount of the cationic antimicrobial agent, CTAB, had the greatest influence on the antimicrobial performance. The antimicrobial performance of PCL/PEO/CS/CTAB0.4 was the highest among the prepared materials, with 83.7% effectiveness against S. aureus and 99.9% against E. coli. The antimicrobial performance was found to be stable. In our study, we determined the most suitable spinning ratio to prepare an inexpensive and efficient cationic antimicrobial agent. Biodegradable, high-antimicrobial-activity antimicrobial materials can be applied as films, and this new nanofiber material has shown great potential in wound dressings and as a mask material due to its remarkable antimicrobial efficiency. Full article
(This article belongs to the Special Issue Self-Assembled Nanocomposites and Nanostructures for Environmental and Energic Applications)
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12 pages, 2459 KiB  
Article
Efficient Iodine Removal by Porous Biochar-Confined Nano-Cu2O/Cu0: Rapid and Selective Adsorption of Iodide and Iodate Ions
by Jiaqi Li, Mengzhou Wang, Xu Zhao, Zitong Li, Yihui Niu, Sufeng Wang and Qina Sun
Nanomaterials 2023, 13(3), 576; https://doi.org/10.3390/nano13030576 - 31 Jan 2023
Cited by 2 | Viewed by 1585
Abstract
Iodine is a nuclide of crucial concern in radioactive waste management. Nanomaterials selectively adsorb iodine from water; however, the efficient application of nanomaterials in engineering still needs to be developed for radioactive wastewater deiodination. Artemia egg shells possess large surface groups and connecting [...] Read more.
Iodine is a nuclide of crucial concern in radioactive waste management. Nanomaterials selectively adsorb iodine from water; however, the efficient application of nanomaterials in engineering still needs to be developed for radioactive wastewater deiodination. Artemia egg shells possess large surface groups and connecting pores, providing a new biomaterial to remove contaminants. Based on the Artemia egg shell-derived biochar (AES biochar) and in situ precipitation and reduction of cuprous, we synthesized a novel nanocomposite, namely porous biochar-confined nano-Cu2O/Cu0 (C-Cu). The characterization of C-Cu confirmed that the nano-Cu2O/Cu0 was dispersed in the pores of AES biochar, serving in the efficient and selective adsorption of iodide and iodate ions from water. The iodide ion removal by C-Cu when equilibrated for 40 min exhibited high removal efficiency over the wide pH range of 4 to 10. Remarkable selectivity towards both iodide and iodate ions of C-Cu was permitted against competing anions (Cl−/NO3−/SO42−) at high concentrations. The applicability of C-Cu was demonstrated by a packed column test with treated effluents of 1279 BV. The rapid and selective removal of iodide and iodate ions from water is attributed to nanoparticles confined on the AES biochar and pore-facilitated mass transfer. Combining the advantages of the porous biochar and nano-Cu2O/Cu0, the use of C-Cu offers a promising method of iodine removal from water in engineering applications. Full article
(This article belongs to the Special Issue Self-Assembled Nanocomposites and Nanostructures for Environmental and Energic Applications)
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