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Molecules
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Constructing 2D Materials-Based Composites for Energy Related Applications
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Constructing 2D Materials-Based Composites for Energy Related Applications

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: closed (1 June 2023) | Viewed by 7339

Special Issue Editors

Dr. Jinhua Sun

E-Mail Website
Guest Editor
Chalmers University of Technology
Dr. Marco Agostini

E-Mail Website
Guest Editor
Chalmers University of Technology

Special Issue Information

Dear Colleagues,

To build a sustainable society we must address energy-related issues by widely applying environmentally friendly technologies, for example, energy conversion and energy storage devices. The active materials play a critical role in developing high performance devices. After the discovery of graphene a wide range of 2D materials with extraordinary properties have been developed, for example, transition metal dichalcogenides (TMDs), transition metal carbides (TMCs), covalent organic frame works (COF), black phosphorus (BP), and silylene. These 2D materials have attracted enormous attention as active materials for energy-related applications, for example, energy storage, electro/photo-catalysis, solar cell, sensors, FET, and composites. This Special Issue focuses on recent advances of design and synthesis of 2D materials-based composites for energy storage and conversion. We invite you to contribute original research articles as well as review articles related to this Special Issue.

Dr. Jinhua Sun
Dr. Marco Agostini
Guest Editors

Manuscript Submission Information

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Keywords

  • graphene
  • 2D materials
  • surface chemistry
  • composites
  • energy storage and conversion

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Published Papers (2 papers)

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Research

14 pages, 2828 KiB  
Article
Calcium Carbonate@silica Composite with Superhydrophobic Properties
by Yitong Ma, Pei Tian, Malayphone Bounmyxay, Yiwen Zeng and Nong Wang
Molecules 2021, 26(23), 7180; https://doi.org/10.3390/molecules26237180 - 26 Nov 2021
Cited by 14 | Viewed by 3078
Abstract
In this paper, spherical calcium carbonate particles were prepared by using CaCl2 aqueous solution + NH3·H2O + polyoxyethylene octyl phenol ether-10 (OP-10) + n-butyl alcohol + cyclohexane inverse micro emulsion system. Then, nanoscale spherical silica was deposited on [...] Read more.
In this paper, spherical calcium carbonate particles were prepared by using CaCl2 aqueous solution + NH3·H2O + polyoxyethylene octyl phenol ether-10 (OP-10) + n-butyl alcohol + cyclohexane inverse micro emulsion system. Then, nanoscale spherical silica was deposited on the surface of micron calcium carbonate by Stöber method to form the composite material. Scanning electron microscope (SEM), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) were used to characterize the morphology and structure of the composite material. It is found that the surface of the composite material has a micro-nano complex structure similar to the surface of a “lotus leaf”, making the composite material show hydrophobicity. The contact angle of the cubic calcium carbonate, spherical calcium carbonate and CaCO3@SiO2 composite material were measured. They were 51.6°, 73.5°, and 76.8°, respectively. After modification with stearic acid, the contact angle of cubic and spherical CaCO3 were 127.1° and 136.1°, respectively, while the contact angle of CaCO3@SiO2 composite was 151.3°. These results showed that CaCO3@SiO2 composite had good superhydrophobicity, and the influence of material roughness on its hydrophobicity was investigated using the Cassie model theory. Full article
(This article belongs to the Special Issue Constructing 2D Materials-Based Composites for Energy Related Applications)
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11 pages, 2815 KiB  
Article
The Combination of 2D Layered Graphene Oxide and 3D Porous Cellulose Heterogeneous Membranes for Nanofluidic Osmotic Power Generation
by Pan Jia, Xinyi Du, Ruiqi Chen, Jinming Zhou, Marco Agostini, Jinhua Sun and Linhong Xiao
Molecules 2021, 26(17), 5343; https://doi.org/10.3390/molecules26175343 - 2 Sep 2021
Cited by 17 | Viewed by 3591
Abstract
Salinity gradient energy, as a type of blue energy, is a promising sustainable energy source. Its energy conversion efficiency is significantly determined by the selective membranes. Recently, nanofluidic membrane made by two-dimensional (2D) nanomaterials (e.g., graphene) with densely packed nanochannels has been considered [...] Read more.
Salinity gradient energy, as a type of blue energy, is a promising sustainable energy source. Its energy conversion efficiency is significantly determined by the selective membranes. Recently, nanofluidic membrane made by two-dimensional (2D) nanomaterials (e.g., graphene) with densely packed nanochannels has been considered as a high-efficient membrane in the osmotic power generation research field. Herein, the graphene oxide-cellulose acetate (GO–CA) heterogeneous membrane was assembled by combining a porous CA membrane and a layered GO membrane; the combination of 2D nanochannels and 3D porous structures make it show high surface-charge-governed property and excellent ion transport stability, resulting in an efficient osmotic power harvesting. A power density of about 0.13 W/m2 is achieved for the sea–river mimicking system and up to 0.55 W/m2 at a 500-fold salinity gradient. With different functions, the CA and GO membranes served as ion storage layer and ion selection layer, respectively. The GO–CA heterogeneous membrane open a promising avenue for fabrication of porous and layered platform for wide potential applications, such as sustainable power generation, water purification, and seawater desalination. Full article
(This article belongs to the Special Issue Constructing 2D Materials-Based Composites for Energy Related Applications)
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