[go: up one dir, main page]
More Web Proxy on the site http://driver.im/
You seem to have javascript disabled. Please note that many of the page functionalities won't work as expected without javascript enabled.
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.8
3.8
Journals
Catalysts
Special Issues
Advanced Catalytic Materials and Processes for Water/Wastewater Treatment
share announcement

Advanced Catalytic Materials and Processes for Water/Wastewater Treatment

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

Deadline for manuscript submissions: closed (30 November 2024) | Viewed by 7633

Special Issue Editors

Dr. Xiaodi Duan

E-Mail Website
Guest Editor
Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
Interests: UV-based AOP; emerging contaminants; cyanotoxin; drinking water treatment
Dr. Jing Ding

E-Mail Website
Guest Editor
State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
Interests: advanced oxidation; electrochemistry; tertiary wastewater treatment; landfill leachate treatment; resource recovery
Dr. Junjing Li

E-Mail Website
Guest Editor
School of Environmental Science and Engineering, Tiangong University, State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin 300387, China
Interests: electrochemical technology; advanced oxidation; membrane fouling control; wastewater treatment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the rapid development of urbanization and industrialization, the quantity and types of contaminants entering water bodies have sharply increased, leading to a serious pollution of water resources. Contaminants with low biodegradability and low molecular weight can hardly be removed using traditional treatment approaches, but are vulnerable to advanced catalytic materials and methods. Recently, novel catalysts that are more environmentally friendly, and have higher catalytical efficiencies, and broader application prospects have been synthesized. Further research toward a better understanding of the fundamental mechanisms of catalytical processes should be conducted.

Submissions to this Special Issue, entitled “Advanced Catalytic Materials and Processes for Water/Wastewater Treatment”, are welcome in the form of original research papers or short reviews that reflect the state of the art and outlooks in this field. This Special Issue will focus on, but is not limited to, the following aspects: 1) designing novel synthetic methods and catalytic materials for water/wastewater treatment; 2) degrading contaminants of emerging concern by catalytic processes, including photocatalytic, electrocatalytic, sonocatalytic, etc.; 3) application of catalysts in advanced oxidation/reduction technologies; 4) theoretical modeling of catalysis processes; and 5) toxicity studies on catalysts.

Dr. Xiaodi Duan
Dr. Jing Ding
Dr. Junjing 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. 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 2200 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

  • water treatment
  • catalyst
  • catalytic processes
  • contaminants of emerging concern
  • advanced oxidation processes

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

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

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

14 pages, 5070 KiB  
Article
Magnetically Assembled Electrode Incorporating Self-Powered Tourmaline Composite Particles: Exploiting Waste Energy in Electrochemical Wastewater Treatment
by Bo Zhang, Dan Shao, Yaru Wang, Hao Xu and Haojie Song
Catalysts 2025, 15(1), 2; https://doi.org/10.3390/catal15010002 - 24 Dec 2024
Abstract
A magnetically assembled electrode (MAE) is a modular electrode format in electrochemical oxidation wastewater treatment. MAE utilizes magnetic forces to attract the magnetic catalytic auxiliary electrodes (AEs) on the main electrode (ME), which has the advantages of high efficiency and flexible adjustability. However, [...] Read more.
A magnetically assembled electrode (MAE) is a modular electrode format in electrochemical oxidation wastewater treatment. MAE utilizes magnetic forces to attract the magnetic catalytic auxiliary electrodes (AEs) on the main electrode (ME), which has the advantages of high efficiency and flexible adjustability. However, the issue of the insufficient polarization of the AEs leaves the potential of this electrode underutilized. In this study, natural tourmaline (Tml) particles with pyroelectric and piezoelectric properties were utilized to solve the above issue by harvesting and converting the waste energy (i.e., the joule heating energy and the bubble striking mechanical energy) from the electrolysis environment into additional electrical energy applied on the AEs. Different contents of Tml particles were composited with Fe3O4/Sb-SnO2 particles as novel AEs, and the structure–activity relationship of the novel MAE was investigated by various electrochemical measurements and orthogonal tests of dye wastewater treatment. The results showed that Tml could effectively enhance all electrochemical properties of the electrode. The optimal dye removal rate was obtained by loading the AEs with 0.2 g·cm−2 when the Tml content was 4.5 wt%. The interaction of current density and Tml content had a significant effect on the COD removal rate, and the mineralization capacity of the electrode was significantly enhanced. The findings of this study have unveiled the potential application of minerals and energy conversion materials in the realm of electrochemical oxidation wastewater treatment. Full article
(This article belongs to the Special Issue Advanced Catalytic Materials and Processes for Water/Wastewater Treatment)
►▼ Show Figures

Graphical abstract

Graphical abstract
Full article ">Figure 1
<p>Preparation processes of different AEs particles in this study and their material characterization results: (<b>a</b>) SEM image and particle size distribution of Tml. (<b>b</b>) SEM images and particle size distribution of SnO<sub>2</sub>(0T). (<b>c</b>) EDS elemental content distribution of SnO<sub>2</sub>(0T). SEM images and particle size distribution of (<b>d</b>) SnO<sub>2</sub>(4.5%T) and (<b>e</b>) SnO<sub>2</sub>(16%T). (<b>f</b>) Tml polarization curves; (<b>g</b>) XRD images of the three AEs. (<b>h</b>) Schematic diagram of the distribution of different ratios of tourmaline doping.</p> Full article ">Figure 2
<p>Electrochemical characterization of 2D Ti/Sb-SnO<sub>2</sub> and each group of MAE: (<b>a</b>) Double-layer capacitance value (C<sub>dl</sub>). (<b>b</b>) Voltametric charge (Q*) obtained at different potential scan rates and the corresponding q<sub>T</sub>. (<b>c</b>) CV curves (potential range: 0~2.5 V (vs. SCE), scan rate: 0.01 V·s<sup>−1</sup>). (<b>d</b>) Tafel plots of LSV curves. (<b>e</b>,<b>f</b>) Nyquist plots (equilibrium potential: 0 V and 2 V (vs. SCE), frequency range: 0.1~10<sup>5</sup> Hz). (<b>g</b>) Comprehensive comparison radar plots of key electrochemical performance metrics.</p> Full article ">Figure 3
<p>One-factor experiments on the degradation of ARG (250 mL, 200 mg·L<sup>−1</sup>) by four electrodes composed of Ti/Sb-SnO<sub>2</sub> for 90 min under four experimental conditions: (<b>a</b>) ARG removal rate versus time; (<b>b</b>) COD of ARG solution after 90 min of degradation.</p> Full article ">Figure 4
<p>Results of orthogonal test analysis based on ARG removal rate after 30 min of degradation: (<b>a</b>) Distribution of contributions of significant single and interaction factors to experimental results. (<b>b</b>) Significant single factor main effects at each level. (<b>c</b>,<b>d</b>) Space curved surface plot of the effect of different interaction factors on ARG removal rate.</p> Full article ">Figure 5
<p>Results of orthogonal test analysis based on COD removal rate after 90 min of degradation: (<b>a</b>) Distribution of contributions of significant single and interaction factors to experiment results. (<b>b</b>) Significant single factor main effects at each level. (<b>c</b>,<b>d</b>) Space curved surface plot of the effect of different interaction factors on COD removal rate.</p> Full article ">Scheme 1
<p>Structure of the magnetically assembled electrode (MAE) and the novel tourmaline composite auxiliary electrodes (AEs) particles in this study and the schematic diagram of the waste energy conversion of tourmaline in electrolysis.</p> Full article ">
21 pages, 8686 KiB  
Article
Green Synthesis of Silver-Incorporated Rutile TiO2 for Enhanced Photocatalytic Degradation of Ciprofloxacin and Carmine G Dye Pollutants
by Hany M. Abd El-Lateef, Chao-Qun Zeng, Mai M. Khalaf and Ibrahim M. A. Mohamed
Catalysts 2024, 14(12), 904; https://doi.org/10.3390/catal14120904 - 9 Dec 2024
Viewed by 467
Abstract
Developing sustainable TiO2-based photocatalysts for environmental remediation is an increasingly significant area of research. However, a limited understanding of the long-term ecological impact of these photocatalysts poses a barrier to their practical and industrial-scale applications. To address this challenge, this work [...] Read more.
Developing sustainable TiO2-based photocatalysts for environmental remediation is an increasingly significant area of research. However, a limited understanding of the long-term ecological impact of these photocatalysts poses a barrier to their practical and industrial-scale applications. To address this challenge, this work employed a green synthesis approach to prepare an Ag/TiO2 photocatalyst designed to improve environmental compatibility and enhance efficiency in pollutant degradation. Ag/TiO2 was synthesized using mushroom biomass as a natural capping to evaluate its effectiveness in the degradation of ciprofloxacin (CIP) and azo Carmine G dye (ACGD). The mushroom biomass served as a renewable cost-effective support for Ag incorporation, while the Ag modification of TiO2 could enhance the photocatalyst’s performance. Structural, chemical, and morphological characterization techniques were applied and showed that the Ag/TiO2 particles consisted of irregularly shaped nanoparticles. The CIP removal reached 82.46% after 300 min and ACGD removal efficiency went up to 83.64%. The enhanced performance is attributed to the unique electronic and structural properties of Ag-modified TiO2. This study highlights the potential of Ag/TiO2 synthesized via green methods as a high-performance photocatalyst for the effective remediation of pharmaceutical and dye pollutants in wastewater treatment applications. Full article
(This article belongs to the Special Issue Advanced Catalytic Materials and Processes for Water/Wastewater Treatment)
►▼ Show Figures

Figure 1

Figure 1
<p>SEM images of the synthesized Ag/TiO<sub>2</sub> at different magnifications: (<b>A</b>) 1.5 KX; (<b>B</b>) 3.0 KX; (<b>C</b>) 10 KX; and (<b>D</b>) 14 KX.</p> Full article ">Figure 2
<p>TEM images of the synthesized Ag/TiO<sub>2</sub> at different magnifications: (<b>A</b>) 20 KX; (<b>B</b>) 27 KX; (<b>C</b>) 40 KX; and (<b>D</b>) 50 KX.</p> Full article ">Figure 3
<p>(<b>A</b>) EDX analysis of the prepared Ag/TiO<sub>2</sub>, (<b>B</b>) EDX analysis with focus on the Ag area of Ag/TiO<sub>2</sub>, and (<b>C</b>) elemental mapping of Ag/TiO<sub>2</sub>, including the map of Ti, O, and Ag.</p> Full article ">Figure 4
<p>(<b>A</b>) Total survey of XPS analysis, (<b>B</b>) Ti-2p XPS fine-fitting analysis, (<b>C</b>) O-1s XPS fine-fitting analysis, and (<b>D</b>) Ag-3d XPS fine-fitting analysis.</p> Full article ">Figure 5
<p>FT-IR analysis of TiO<sub>2</sub> and the prepared Ag/TiO<sub>2</sub> material.</p> Full article ">Figure 6
<p>XRD analysis of TiO<sub>2</sub> and the prepared Ag/TiO<sub>2</sub> material.</p> Full article ">Figure 7
<p>UV-visible spectroscopy of CIP at time = 0 (initial) and after 30 min from irradiation of simulated light without catalyst and with TiO<sub>2</sub> and Ag/TiO<sub>2</sub>.</p> Full article ">Figure 8
<p>Photocatalytic degradation of CIP pollutant at different times from irradiation of simulated light using Ag/TiO<sub>2</sub> photocatalyst.</p> Full article ">Figure 9
<p>The estimated removal degradation (%) of CIP pollutant at different times from the irradiation of simulated light using the Ag/TiO<sub>2</sub> photocatalyst.</p> Full article ">Figure 10
<p>The C<sub>o</sub>/C<sub>t</sub> and first order-kinetics verification of the CIP pollutant degradation at different times from the irradiation of simulated light using the Ag/TiO<sub>2</sub> photocatalyst.</p> Full article ">Figure 11
<p>UV-visible spectroscopy of ACGD at time = 0 (initial) and after 30 min from irradiation of simulated light without catalyst and with TiO<sub>2</sub> and Ag/TiO<sub>2</sub>.</p> Full article ">Figure 12
<p>Photocatalytic degradation of ACGD pollutant at different times from irradiation of simulated light using Ag/TiO<sub>2</sub> photocatalyst.</p> Full article ">Figure 13
<p>The estimated removal degradation (%) of the ACGD pollutant at different times from the irradiation of simulated light using the Ag/TiO<sub>2</sub> photocatalyst.</p> Full article ">Figure 14
<p>The C<sub>o</sub>/C<sub>t</sub> and first order-kinetics verification of the ACGD pollutant degradation at different times from the irradiation of simulated light using the Ag/TiO<sub>2</sub> photocatalyst.</p> Full article ">Scheme 1
<p>Preparation of the studied Ag/TiO<sub>2</sub> material, including mechanistic aspects.</p> Full article ">Scheme 2
<p>Photocatalytic degradation of pollutants based on the studied Ag/TiO<sub>2</sub> material, including mechanistic aspects.</p> Full article ">

Review

Jump to: Research

36 pages, 3154 KiB  
Review
Photocatalytic Application of Polymers in Removing Pharmaceuticals from Water: A Comprehensive Review
by Sanja J. Armaković, Stevan Armaković and Maria M. Savanović
Catalysts 2024, 14(7), 447; https://doi.org/10.3390/catal14070447 - 12 Jul 2024
Cited by 1 | Viewed by 1913
Abstract
This comprehensive review covers recent advancements in utilizing various types of polymers and their modifications as photocatalysts for the removal of pharmaceutical contaminants from water. It also considers polymers that enhance the photocatalytic properties of other materials, highlighting their dual role in improving [...] Read more.
This comprehensive review covers recent advancements in utilizing various types of polymers and their modifications as photocatalysts for the removal of pharmaceutical contaminants from water. It also considers polymers that enhance the photocatalytic properties of other materials, highlighting their dual role in improving water purification efficiency. Over the past decades, significant progress has been made in understanding the photocatalytic properties of polymers, including organic, inorganic, and composite materials, and their efficacy in degrading pharmaceuticals. Some of the most commonly used polymers, such as polyaniline, poly(p-phenylene vinylene), polyethylene oxide, and polypyrole, and their properties have been reviewed in detail. Physical modification techniques (mechanical blending and extrusion processing) and chemical modification techniques (nanocomposite formation, plasma modification techniques, surface functionalization, and cross-linking) have been discussed as appropriate for modifying polymers in order to increase their photocatalytic activity. This review examines the latest research findings, including the development of novel polymer-based photocatalysts and their application in the removal of pharmaceutical compounds, as well as optimization strategies for enhancing their performance. Additionally, challenges and future directions in this field are discussed to guide further research efforts. Full article
(This article belongs to the Special Issue Advanced Catalytic Materials and Processes for Water/Wastewater Treatment)
►▼ Show Figures

Graphical abstract

Graphical abstract
Full article ">Figure 1
<p>Overview of various photocatalytic applications of polymers. Reprinted with permission from Ref. [<a href="#B19-catalysts-14-00447" class="html-bibr">19</a>], copyright Royal Society of Chemistry.</p> Full article ">Figure 2
<p>Optimization of injection stretch blow-molding. (<b>a</b>–<b>f</b>) illustrate the process steps. Straight arrows follow the process sequence; curved arrows follow the optimization sequence. N—screw speed, <span class="html-italic">T</span><sub>b</sub>—barrel temperature profile, <span class="html-italic">V</span><sub>inj</sub>—injection volume. Reprinted with permission from Ref. [<a href="#B159-catalysts-14-00447" class="html-bibr">159</a>], copyright MDPI.</p> Full article ">Figure 3
<p>The scheme of photocatalysis, based on a (<b>a</b>) conducting polymer (CP) nanocomposite and (<b>b</b>) conducting polymer–metal oxide hybrid modification. Reprinted and adjusted with permission from Ref. [<a href="#B192-catalysts-14-00447" class="html-bibr">192</a>], copyright MDPI.</p> Full article ">Figure 4
<p>Venn diagram illustrating the connections between distinct computational methods for molecular simulations.</p> Full article ">Figure 5
<p>Suggested workflow for geometrical optimization and property calculations of long polymer chains.</p> Full article ">Figure 6
<p>PMMA optimized via (<b>a</b>) GFN2-xTB and (<b>b</b>) B3LYP-D3/6-31G(d,p). Gray spheres represent carbon atoms, white spheres represent hydrogen atoms, red spheres represent oxygen atoms.</p> Full article ">Figure 7
<p>(<b>a</b>) RDG scatter plot and (<b>b</b>) RDG surfaces of PMMA polymer chain.</p> Full article ">Figure 8
<p>Advantages of polymers in photocatalytic removal of pharmaceutical contaminants from water.</p> Full article ">
25 pages, 969 KiB  
Review
Recent Advances in Advanced Oxidation Processes for Degrading Pharmaceuticals in Wastewater—A Review
by Nur Nabaahah Roslan, Harry Lik Hock Lau, Nurul Amanina A. Suhaimi, Nurulizzatul Ningsheh M. Shahri, Sera Budi Verinda, Muhammad Nur, Jun-Wei Lim and Anwar Usman
Catalysts 2024, 14(3), 189; https://doi.org/10.3390/catal14030189 - 10 Mar 2024
Cited by 16 | Viewed by 4441
Abstract
A large variety of pharmaceutical compounds have recently been detected in wastewater and natural water systems. This review highlighted the significance of removing pharmaceutical compounds, which are considered indispensable emerging contaminants, from wastewater and natural water systems. Various advanced oxidation processes (AOPs), including [...] Read more.
A large variety of pharmaceutical compounds have recently been detected in wastewater and natural water systems. This review highlighted the significance of removing pharmaceutical compounds, which are considered indispensable emerging contaminants, from wastewater and natural water systems. Various advanced oxidation processes (AOPs), including UV-H2O2, Fenton and photo-Fenton, ozone-based processes, photocatalysis, and physical processes, such as sonolysis, microwave, and electron beam irradiation, which are regarded as the most viable methods to eliminate different categories of pharmaceutical compounds, are discussed. All these AOPs exhibit great promising techniques, and the catalytic degradation process of the emerging contaminants, advantages, and disadvantages of each technique were deliberated. Heterogeneous photocatalysis employing metal oxides, particularly anatase TiO2 nanoparticles as catalysts activated by UV light irradiation, was reviewed in terms of the electron–hole separation, migration of the charge carriers to the catalyst surfaces, and redox potential of the charge carriers. This brief overview also emphasized that anatase TiO2 nanoparticles and TiO2-based nanomaterials are promising photocatalysts, and a combination of photocatalysis and other AOPs enhanced photocatalytic degradation efficiency. Finally, the challenges of applying anatase TiO2-based photocatalysis in environmental remediation and wastewater treatments to degrade pharmaceutical compounds, including mass spectroscopic analysis and a biological activity test of by-products of the emerging contaminants resulting from photocatalysis, are summarized. Full article
(This article belongs to the Special Issue Advanced Catalytic Materials and Processes for Water/Wastewater Treatment)
►▼ Show Figures

Graphical abstract

Graphical abstract
Full article ">Figure 1
<p>Chemical structures of pharmaceuticals commonly found in wastewater.</p> Full article ">Figure 2
<p>The reduction potential and band edge position of some common semiconductors.</p> Full article ">
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