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Nanomaterials
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Advances in Nanomaterials for Photocatalysis
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Advances in Nanomaterials for Photocatalysis

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (10 December 2024) | Viewed by 5402

Special Issue Editor

Prof. Dr. Mohammed Es-Souni

E-Mail Website
Guest Editor
Kiel University of Applied Sciences, Institute for Materials & Surface Technologym, 24149 Kiel, Germany
Interests: nanomaterials; functional coatings; electrocatalysis; electrochemical processes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Semiconductor nanomaterials and heterojunctions thereof, including those with (noble) metal nanoparticles, are of critical importance to photocatalysis. Over the past decades advances have been made to boost photocatalytic performance via designing multicomponent catalysts for a more efficient charge separation. The applications span a wide range of vital areas to the future of human society, most important among them are solar energy harvesting for water splitting, CO2 reduction and pollutant and microorganism control.

This special issue of “Nanomaterials” will address current progress and future perspectives of nanophotocatalysts. We are inviting qualified reviews and progress research papers on the following topics:

  • Nanomaterials design for photoelectrocatalysts, including 0D, 1D and 2D nanomaterials and their applications to water splitting;
  • Nanophotocatalysts for CO2 reduction;
  • Nanophotocatalysts for pollutant and microorganism control;
  • Processing methods, including but not limited to chemical, electrochemical and biomimetic methods;
  • Nanophotocatalysts supports, design, processing and property control.

Prof. Dr. Mohammed Es-Souni
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 2400 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

  • nanophotocatalysts
  • photocatalysis
  • water splitting
  • CO2 reduction
  • pollutant control
  • microorganism control
  • environmental remediation

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

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14 pages, 2296 KiB  
Article
Fluoride-Treated Nano-HZSM-5 Zeolite as a Highly Stable Catalyst for the Conversion of Bioethanol to Propylene
by Jian Zhou, Ni Zhang, Tao Meng, Qiangsheng Guo, Zhaoteng Xue and Dongsen Mao
Nanomaterials 2024, 14(19), 1558; https://doi.org/10.3390/nano14191558 - 26 Sep 2024
Cited by 1 | Viewed by 1089
Abstract
Fluoride treatment of ZSM-5 zeolite can effectively adjust surface acidity and generate a secondary pore structure. In this study, a series of modified nano-HZSM-5 zeolites were prepared by NH4F-HF mixed solution treatment and applied to the selective conversion of bioethanol to [...] Read more.
Fluoride treatment of ZSM-5 zeolite can effectively adjust surface acidity and generate a secondary pore structure. In this study, a series of modified nano-HZSM-5 zeolites were prepared by NH4F-HF mixed solution treatment and applied to the selective conversion of bioethanol to propylene at 500 °C, atmospheric pressure, and a WHSV of 10 h−1. The results showed that NH4F-HF modification weakened the surface acidity of nano-HZSM-5 zeolites, thus inhibiting coke formation. Additionally, the mesopores in the nano-HZSM-5 zeolites increased after NH4F-HF treatment, thereby enhancing the mass transfer rate and improving the coke-resistance ability. The NH4F-HF mixed solution modification significantly improved the stability of nano-HZSM-5 zeolites in catalyzing bioethanol to propylene and greatly extended the working life of nano-HZSM-5 zeolites. It can be seen from the characterization of the deactivated catalysts that coke deposition and weakening of acidity may be the key factors for catalyst deactivation. Full article
(This article belongs to the Special Issue Advances in Nanomaterials for Photocatalysis)
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17 pages, 5257 KiB  
Article
Nitrogen-Rich Triazine-Based Covalent Organic Frameworks as Efficient Visible Light Photocatalysts for Hydrogen Peroxide Production
by Shu Yang, Keke Zhi, Zhimin Zhang, Rukiya Kerem, Qiong Hong, Lei Zhao, Wenbo Wu, Lulu Wang and Duozhi Wang
Nanomaterials 2024, 14(7), 643; https://doi.org/10.3390/nano14070643 - 8 Apr 2024
Cited by 3 | Viewed by 2369
Abstract
Covalent organic frameworks (COFs) have been widely used in photocatalytic hydrogen peroxide (H2O2) production due to their favorable band structure and excellent light absorption. Due to the rapid recombination rate of charge carriers, however, their applications are mainly restricted. [...] Read more.
Covalent organic frameworks (COFs) have been widely used in photocatalytic hydrogen peroxide (H2O2) production due to their favorable band structure and excellent light absorption. Due to the rapid recombination rate of charge carriers, however, their applications are mainly restricted. This study presents the design and development of two highly conjugated triazine-based COFs (TBP-COF and TTP-COF) and evaluates their photocatalytic H2O2 production performance. The nitrogen-rich structures and high degrees of conjugation of TBP-COF and TTP-COF facilitate improved light absorption, promote O2 adsorption, enhance their redox power, and enable the efficient separation and transfer of photogenerated charge carriers. There is thus an increase in the photocatalytic activity for the production of H2O2. When exposed to 10 W LED visible light irradiation at a wavelength of 420 nm, the pyridine-based TTP-COF produced 4244 μmol h−1 g−1 of H2O2 from pure water in the absence of a sacrificial agent. Compared to TBP-COF (1882 μmol h−1 g−1), which has a similar structure but lacks pyridine sites, TTP-COF demonstrated nearly 2.5 times greater efficiency. Furthermore, it exhibited superior performance compared to most previously published nonmetal COF-based photocatalysts. Full article
(This article belongs to the Special Issue Advances in Nanomaterials for Photocatalysis)
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Review

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34 pages, 6710 KiB  
Review
Prospects of Halide Perovskites for Solar-to-Hydrogen Production
by Huilong Liu, Tulja Bhavani Korukonda and Shubhra Bansal
Nanomaterials 2024, 14(23), 1914; https://doi.org/10.3390/nano14231914 - 28 Nov 2024
Cited by 1 | Viewed by 1550
Abstract
Solar-driven hydrogen generation is one of the promising technologies developed to address the world’s growing energy demand in an sustainable way. While, for hydrogen generation (otherwise water splitting), photocatalytic, photoelectrochemical, and PV-integrated water splitting systems employing conventional semiconductor oxides materials and their electrodes [...] Read more.
Solar-driven hydrogen generation is one of the promising technologies developed to address the world’s growing energy demand in an sustainable way. While, for hydrogen generation (otherwise water splitting), photocatalytic, photoelectrochemical, and PV-integrated water splitting systems employing conventional semiconductor oxides materials and their electrodes have been under investigation for over a decade, lead (Pb)- halide perovskites (HPs) made their debut in 2016. Since then, the exceptional characteristics of these materials, such as their tunable optoelectronic properties, ease of processing, high absorption coefficients, and long diffusion lengths, have positioned them as a highly promising material for solar-driven water splitting. Like in solar photovoltaics, a solar-driven water splitting field is also dominated by Pb-HPs with ongoing efforts to improve material stability and hydrogen evolution/generation rate (HER). Despite this, with the unveiling potential of various Pb-free HP compositions in photovoltaics and optoelectronics researchers were inspired to explore the potential of these materials in water splitting. In this current review, we outlined the fundamentals of water splitting, provided a summary of Pb HPs in this field, and the associated issues are presented. Subsequently, Pb-free HP compositions and strategies employed for improving the photocatalytic and/or electrochemical activity of the material are discussed in detail. Finally, this review presents existing issues and the future potential of lead-free HPs, which show potential for enhancing productivity of solar-to-hydrogen conversion technologies. Full article
(This article belongs to the Special Issue Advances in Nanomaterials for Photocatalysis)
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