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Fabrication of Graphene and Other 2D-Materials-Based Nanocomposites for Hydrogen Production
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Fabrication of Graphene and Other 2D-Materials-Based Nanocomposites for Hydrogen Production

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

Deadline for manuscript submissions: closed (15 September 2022) | Viewed by 5185

Special Issue Editor

Dr. Panyong Kuang

E-Mail Website
Guest Editor
School of Materials and Chemistry, China University of Geosciences, Wuhan, China
Interests: photochemical and photoelectrochemical, electrocatalysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Hydrogen (H2) has been deemed as the most promising and valuable alternative to nonrenewable fossil fuels. In recent decades, two-dimensional (2D) materials including graphene, MXene, and transition metal sulfides, as well as their nanocomposite materials, have attracted extensive research interest in the field of H2 production due to their merits of a large specific surface area, high electrical conductivity, abundant reactive sites, and so on. This Special Issue aims to collect advanced research achievements on the fabrication of 2D-materials-based nanocomposites and their applications for electrocatalytic and photocatalytic H2 evolution.

Dr. Panyong Kuang
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. Molecules 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

  • two-dimensional materials
  • graphene
  • MXene
  • large specific surface area
  • nanocomposite materials
  • electrocatalytic hydrogen evolution
  • photocatalytic hydrogen evolution

Published Papers (2 papers)

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Research

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14 pages, 2668 KiB  
Article
Porous BiVO4/Boron-Doped Diamond Heterojunction Photoanode with Enhanced Photoelectrochemical Activity
by Jiangtao Huang, Aiyun Meng, Zongyan Zhang, Guanjie Ma, Yuhao Long, Xingyu Li, Peigang Han and Bin He
Molecules 2022, 27(16), 5218; https://doi.org/10.3390/molecules27165218 - 16 Aug 2022
Cited by 3 | Viewed by 1640
Abstract
Constructing heterojunction is an attractive strategy for promoting photoelectrochemical (PEC) performance in water splitting and organic pollutant degradation. Herein, a novel porous BiVO4/Boron-doped Diamond (BiVO4/BDD) heterojunction photoanode containing masses of ultra-micro electrodes was successfully fabricated with an n-type BiVO [...] Read more.
Constructing heterojunction is an attractive strategy for promoting photoelectrochemical (PEC) performance in water splitting and organic pollutant degradation. Herein, a novel porous BiVO4/Boron-doped Diamond (BiVO4/BDD) heterojunction photoanode containing masses of ultra-micro electrodes was successfully fabricated with an n-type BiVO4 film coated on a p-type BDD substrate by magnetron sputtering (MS). The surface structures of BiVO4 could be adjusted by changing the duration of deposition (Td). The morphologies, phase structures, electronic structures, and chemical compositions of the photoanodes were systematically characterized and analyzed. The best PEC activity with the highest current density of 1.8 mA/cm2 at 1.23 VRHE was achieved when Td was 30 min, and the sample showed the highest degradation efficiency towards tetracycline hydrochloride degradation (TCH) as well. The enhanced PEC performance was ascribed to the excellent charge transport efficiency as well as a lower carrier recombination rate, which benefited from the formation of BiVO4/BDD ultra-micro p-n heterojunction photoelectrodes and the porous structures of BiVO4. These novel photoanodes were expected to be employed in the practical PEC applications of energy regeneration and environmental management in the future. Full article
(This article belongs to the Special Issue Fabrication of Graphene and Other 2D-Materials-Based Nanocomposites for Hydrogen Production)
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Review

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34 pages, 13308 KiB  
Review
Synthesis of Graphene-Based Nanocomposites for Environmental Remediation Applications: A Review
by Rohit Goyat, Yajvinder Saharan, Joginder Singh, Ahmad Umar and Sheikh Akbar
Molecules 2022, 27(19), 6433; https://doi.org/10.3390/molecules27196433 - 29 Sep 2022
Cited by 13 | Viewed by 3143
Abstract
The term graphene was coined using the prefix “graph” taken from graphite and the suffix “-ene” for the C=C bond, by Boehm et al. in 1986. The synthesis of graphene can be done using various methods. The synthesized graphene was further oxidized to [...] Read more.
The term graphene was coined using the prefix “graph” taken from graphite and the suffix “-ene” for the C=C bond, by Boehm et al. in 1986. The synthesis of graphene can be done using various methods. The synthesized graphene was further oxidized to graphene oxide (GO) using different methods, to enhance its multitude of applications. Graphene oxide (GO) is the oxidized analogy of graphene, familiar as the only intermediate or precursor for obtaining the latter at a large scale. Graphene oxide has recently obtained enormous popularity in the energy, environment, sensor, and biomedical fields and has been handsomely exploited for water purification membranes. GO is a unique class of mechanically robust, ultrathin, high flux, high-selectivity, and fouling-resistant separation membranes that provide opportunities to advance water desalination technologies. The facile synthesis of GO membranes opens the doors for ideal next-generation membranes as cost-effective and sustainable alternative to long existing thin-film composite membranes for water purification applications. Many types of GO–metal oxide nanocomposites have been used to eradicate the problem of metal ions, halomethanes, other organic pollutants, and different colors from water bodies, making water fit for further use. Furthermore, to enhance the applications of GO/metal oxide nanocomposites, they were deposited on polymeric membranes for water purification due to their relatively low-cost, clear pore-forming mechanism and higher flexibility compared to inorganic membranes. Along with other applications, using these nanocomposites in the preparation of membranes not only resulted in excellent fouling resistance but also could be a possible solution to overcome the trade-off between water permeability and solute selectivity. Hence, a GO/metal oxide nanocomposite could improve overall performance, including antibacterial properties, strength, roughness, pore size, and the surface hydrophilicity of the membrane. In this review, we highlight the structure and synthesis of graphene, as well as graphene oxide, and its decoration with a polymeric membrane for further applications. Full article
(This article belongs to the Special Issue Fabrication of Graphene and Other 2D-Materials-Based Nanocomposites for Hydrogen Production)
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