Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.3
3.9
Journals
Catalysts
Special Issues
Electro/Photocatalyst for Degradation of Emerging Water Pollutants and Water Splitting
share announcement

Electro/Photocatalyst for Degradation of Emerging Water Pollutants and Water Splitting

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Photocatalysis".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 7254

Special Issue Editors

Dr. Tahir Muhmood

E-Mail Website
Guest Editor
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Science, Nanjing Forestry University, Nanjing 210037, China
Interests: nanomaterials; nano-chemistry; electro/photocatalysts; photocatalysis; environmental science; biomass materials; chemical engineering
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Xiaofei Yang

E-Mail Website
Guest Editor
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Science, Nanjing Forestry University, Nanjing 210037, China
Interests: solar photocatalytic materials; nanomaterials; photothermal materials

Special Issue Information

Dear Colleagues,

Advances in, and the development of electro-photocatalysts have unlocked a new research direction of multifunctional catalysts designed for water splitting, electrocatalysis, pollutant degradation, and energy production. Recently the fundamental multifunctional catalyst has been a breakthrough, so researchers are developing and modifying previously existing material for multi-purposes. Advanced studies showed that multifunctional catalysts could also boost some novel reactions with high efficiency. In the current scenario, designing a simple, multifunctional catalyst that should be environmentally friendly is necessary.

Research has successfully synthesized catalysts for specific applications. Therefore, many catalysts are available for water splitting, others for pollutant degradation, and others for energy production. Our current Research Topic's goal is to design a multifunctional catalyst that can be used for multipurpose applications. For this, researchers can modify the previous catalyst with band-gap engineering, change the synthesis process, and use previous material for novel applications with heterojunction creation with other application materials.

This Research Topic will gather the latest research work, which shows the synthesis and uses of Electro-photocatalysts for multipurpose applications (at least two or more applications). It is our pleasure to welcome all researchers to contribute their original research paper or review article for this Research Topic, which particularly welcomes articles on the following themes:

  • Multifunctional electro-photocatalyst synthesis for pollutant degradation.
  • Water splitting with the help of a designed multifunctional electro-photocatalyst.
  • Degradation of multi-pollutants by Multifunctional electro-photocatalyst.
  • Multifunctional electro-photocatalyst application in the perspective of energy and electrochemical field.

Dr. Tahir Muhmood
Prof. Dr. Xiaofei Yang
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. Catalysts is an international peer-reviewed open access monthly 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

  • multi-functional catalyst
  • pollutant degradation
  • water splitting
  • energy production
  • electrochemical properties

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

24 pages, 7391 KiB  
Article
A Comprehensive Study of Electrocatalytic Degradation of M-Tolylhydrazine with Binary Metal Oxide (Er2O3@NiO) Nanocomposite Modified Glassy Carbon Electrode
by Tahir Ali Sheikh, Abdullah M. Asiri, Amna Siddique, Hadi M. Marwani, Md. Rezaur Rahman, Muhammad Nadeem Akhtar and Mohammed M. Rahman
Catalysts 2023, 13(5), 905; https://doi.org/10.3390/catal13050905 - 19 May 2023
Cited by 1 | Viewed by 1559
Abstract
Generally, our ecosystem is continuously contaminated as a result of anthropogenic activities that form the basis of our comfort in our routine life. Thus, most scientists are engaged in the development of new technologies that can be used in environmental remediation. Herein, highly [...] Read more.
Generally, our ecosystem is continuously contaminated as a result of anthropogenic activities that form the basis of our comfort in our routine life. Thus, most scientists are engaged in the development of new technologies that can be used in environmental remediation. Herein, highly calcined binary metal oxide (Er2O3@NiO) semiconductor nanocomposite (NC) was synthesized using a classical wet chemical process with the intention to both detect and degrade the toxic chemicals in an aqueous medium using a novel electrochemical current–potential (I–V) approach for the first time. Optical, morphological, and structural properties of the newly synthesized semiconductor NC were also studied in detail using FT-IR, UV/Vis., FESEM-EDS, XPS, BET, EIS, and XRD techniques. Then, a modified glassy carbon electrode (GCE) based on the newly synthesized semiconductor nanocomposite (Er2O3@NiO-NC/Nafion/GCE) as a selective electrochemical sensor was fabricated with the help of 5% ethanolic-Nafion as the conducting polymer binder in order to both detect and electro-hydrolyze toxic chemicals in an aqueous medium. Comparative study showed that this newly developed Er2O3@NiO-NC/Nafion/GCE was found to be very selective against m-tolyl hydrazine (m-Tolyl HDZN) and to have good affinity in the presence of other interfering toxic chemicals. Analytical parameters were also studied in this approach to optimize the newly designed Er2O3@NiO-NC/Nafion/GCE as an efficient and selective m-Tolyl HDZN sensor. Its limit of detection (LOD) at an SNR of 3 was calculated as 0.066 pM over the linear dynamic range (LDR) of our target analyte concentration (0.1 pM–0.1 mM). The limit of quantification (LOQ) and sensitivity were also calculated as 0.22 pM and 14.50 µAµM−1cm−2, respectively. m-Tolyl HDZN is among the toxic chemicals in our ecosystem that have lethal effects in living beings. Therefore, this newly designed electrochemical sensor based on semiconductor nanostructure material offers, for the first time, a cost-effective technique, in addition to long-term stability, that can be used as an alternative for efficiently probing other toxic chemicals in real samples. Full article
(This article belongs to the Special Issue Electro/Photocatalyst for Degradation of Emerging Water Pollutants and Water Splitting)
►▼ Show Figures

Figure 1

15 pages, 4800 KiB  
Article
Pluronic-123 Assisted Synthesis of Cobalt Vanadate Microparticles (µ-CoV MPs) for Durable Electrochemical Oxygen Evolution Reaction in Seawater and Connate Water
by Ibrahim Khan
Catalysts 2023, 13(3), 636; https://doi.org/10.3390/catal13030636 - 22 Mar 2023
Cited by 6 | Viewed by 1732
Abstract
Exploring different catalytic material paradigms could drive the search for the best oxygen evolution reaction (OER) catalyst to achieve industrially-feasible hydrogen fuel from water. Cobalt-based materials are considered good choices in this regard. Herein, we synthesized Pluronic-123 (P-123)-stabilized, unique, rough, globular-shaped [...] Read more.
Exploring different catalytic material paradigms could drive the search for the best oxygen evolution reaction (OER) catalyst to achieve industrially-feasible hydrogen fuel from water. Cobalt-based materials are considered good choices in this regard. Herein, we synthesized Pluronic-123 (P-123)-stabilized, unique, rough, globular-shaped cobalt vanadate microparticles (µ-CoV MPs) using an ultrasonic-assisted solvothermal method. The as-synthesized µ-CoV MPs were subjected to high-temperature annealing to improve the crystallinity and the surface polymer moieties were pyrolyzed. Conventional SEM, XRD, FTIR, and BET analyses evaluated the morphological and structural features. The temperature-controlled crystalline phase led to extensive OER performance in SW electrolytes. The OER onset potential (VOER) was observed at 1.557 V@10 mA/cm2 in seawater (SW) for µ-CoV MPs annealed at 400 °C compared to the VOER of 1.632 V of non-annealed µ-CoV MPs. The current density showed a steep increase beyond 1.557 V, confirming the excellent electrokinetics OER behavior of the µ-CoV MPs-deposited electrode. The chronoamperometric (I–t) OER stability comparison in SW and connate water (CW) electrolytes indicated only a <20% initial current density decrease after 8 h in the case of the SW electrolyte. However, the CW electrolyte posed serious challenges to the electrode and activity was completely lost after <2 h. The electrolytic comparison indicated that SW is highly suitable for µ-CoV MPs electrodes. Full article
(This article belongs to the Special Issue Electro/Photocatalyst for Degradation of Emerging Water Pollutants and Water Splitting)
►▼ Show Figures

Graphical abstract

11 pages, 4981 KiB  
Article
Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production
by Xinying Liu, Chengxiao Zhao, Tahir Muhmood and Xiaofei Yang
Catalysts 2022, 12(12), 1634; https://doi.org/10.3390/catal12121634 - 13 Dec 2022
Cited by 9 | Viewed by 1370
Abstract
Two-dimensional graphitic carbon nitrides (2D g-C3N4) are promising photocatalysts for water splitting to hydrogen due to their non-toxicity and high stability. However, the bulk g-C3N4 has some intrinsic drawbacks, such as rapid electron–hole recombination and low [...] Read more.
Two-dimensional graphitic carbon nitrides (2D g-C3N4) are promising photocatalysts for water splitting to hydrogen due to their non-toxicity and high stability. However, the bulk g-C3N4 has some intrinsic drawbacks, such as rapid electron–hole recombination and low charge-carrier mobility, resulting in poor photocatalytic activity. Here, 2,4-diamine-6-phenyl-1,3,5-triazine was employed as a precursor to regulating the assembly of melamine and cyanuric acid in water. The resulting g-C3N4 not only improved the visible light absorption and electron–hole separation but also provided more catalytic sites for enhanced photocatalytic hydrogen evolution. The modified g-C3N4 (CNP10-H) showed a hydrogen-releasing rate of 2184 μmol·g−1·h−1, much higher than the bulk g-C3N4. Full article
(This article belongs to the Special Issue Electro/Photocatalyst for Degradation of Emerging Water Pollutants and Water Splitting)
►▼ Show Figures

Figure 1

Review

Jump to: Research

23 pages, 3523 KiB  
Review
Insights into Photo/Electrocatalysts for the Degradation of Per- and Polyfluoroalkyl Substances (PFAS) by Advanced Oxidation Processes
by Xiaoyan Chen, Taoyue Yuan, Xinyu Yang, Shunke Ding and Mengtao Ma
Catalysts 2023, 13(9), 1308; https://doi.org/10.3390/catal13091308 - 19 Sep 2023
Cited by 1 | Viewed by 1924
Abstract
Per- and polyfluoroalkyl substances (PFASs) are an emerging group of persistent organic pollutants in aquatic environments with high levels of toxicity and bioaccumulation. The risks posed by PFASs to the environment and health have attracted increasing attention. To remove them from water, advanced [...] Read more.
Per- and polyfluoroalkyl substances (PFASs) are an emerging group of persistent organic pollutants in aquatic environments with high levels of toxicity and bioaccumulation. The risks posed by PFASs to the environment and health have attracted increasing attention. To remove them from water, advanced oxidation processes (AOPs), with the merits of high efficiency and low cost, are mainly used. Photo/electrocatalytic heterogeneous AOPs, with the assistance of nanostructured catalysts and external energy in the form of light/electricity, have emerged as one of the most powerful techniques, overcoming the difficulty associated with defluorination and achieving the effective and complete degradation of PFASs in water. The structures of photo/electrocatalysts play a critical role in the production of reactive oxygen species, the electron transfer process, and the degradation pathway and its efficiency. Herein, to elucidate the structure–performance relationship, a review of photo/electrocatalysts for the enhanced degradation of PFASs in heterogeneous AOPs, organized according to their composition and nanostructure design, is provided. This review article is mainly focused on (1) the mechanisms and pathways of PFAS degradation by heterogeneous photo/electrocatalytic AOPs, and (2) the structural designs and modifications of photo/electrocatalysts for the enhanced degradation of PFASs by heterogeneous AOPs. Finally, the challenges and prospects for future research into photo/electrocatalysts of heterogeneous AOPs in the field of PFAS remediation are discussed. Full article
(This article belongs to the Special Issue Electro/Photocatalyst for Degradation of Emerging Water Pollutants and Water Splitting)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop