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Separations
Special Issues
Application of Photocatalytic Degradation in Pollutants Removal
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Application of Photocatalytic Degradation in Pollutants Removal

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Environmental Separations".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 2155

Special Issue Editors

Dr. Nonni Soraya Sambudi

E-Mail Website
Guest Editor
Chemical Engineering Department, Universitas Pertamina, Jakarta Selatan, Indonesia
Interests: nanomaterials; biomaterials; composite; photocatalyst; water treatment; drug delivery
Dr. Ebrahim Mahmoudi

E-Mail Website
Guest Editor
Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, Selangor, Malaysia
Interests: separation and purification technology; novel membrane materials; graphene; nanomaterials
Dr. Abdul Razzaq

E-Mail Website
Guest Editor
Chemical Engineering Department, COMSATS University Islamabad, Lahore, Pakistan
Interests: dye sensitized solar cells; quantum dots sensitized solar cells; photocatalysis for environmental remediation and solar fuels generation; hybrid anodes for MFC

Special Issue Information

Dear Colleagues,

The treatment of wastewater and the utilization of waste for valuable products in a sustainable way have been deemed as holly grail process. Conventional technology may offer the solution of a high throughput product but without environmental friendliness and sustainability. The photocatalytic process is taking the inspiration from nature through artificial photosynthesis in using energy from sunlight to undergo chemical reaction. The benefits of combining light and a catalyst in order to induce a chemical reaction can aim to be an ecofriendly technique to treat wastewater in removing dyes, pharmaceutical substances, pesticides, and other organic pollutants in complete degradation with no secondary pollutants. A photocatalyst could also play a role similar to photosynthesis process in converting CO2 into fuels, which solve energy and greenhouse gas issues simultaneously. We welcome submissions to this Special Issue “Application of Photocatalytic Degradation in Pollutants Removal” in the form of original research papers, reviews, or communications that highlight promising recent research and novel trends in the photocatalytic process for waste treatment.

Topics of interests in this special issue:

  • Organic pollutants, dyes, pharmaceuticals, and heavy metals removal
  • CO2 removal and conversion
  • Advanced oxidation process
  • Synthesis and characterization of photocatalysts for degradation
  • Heterogeneous and homogeneous photocatalyst
  • Inorganic, inorganic-organic, composite and heterojunction photocatalyst
  • Photocatalytic membrane
  • Optimization and modelling in photocatalytic degradation and separation
  • Novel photocatalyst
  • Environmental remediation

Dr. Nonni Soraya Sambudi
Dr. Ebrahim Mahmoudi
Dr. Abdul Razzaq
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. Separations 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 2600 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

  • photocatalysts
  • CO2 removal and conversion
  • waste treatment
  • nanoparticles
  • organic pollutants removal
  • dyes removal
  • heavy metals removal
  • pharmaceuticals waste
  • composite photocatalysts
  • photocatalytic membranes

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Published Papers (1 paper)

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Research

15 pages, 5716 KiB  
Article
Study of Phenol Red Photocatalytic Decomposition on KBrO3-Supported TiO2 Nanoparticles for Wastewater Treatment
by Najla Khaled Almulhem, Chawki Awada and Nagih M. Shaalan
Separations 2023, 10(3), 162; https://doi.org/10.3390/separations10030162 - 27 Feb 2023
Cited by 8 | Viewed by 2081
Abstract
In this study, the enhanced photodegradation of a high-concentration phenol red (PR) using very fine TiO2 nanocrystals by adding a KBrO3 electron acceptor was reported for the first time. The structural study on TiO2 nanocrystals using HRTEM, XRD, Raman, and [...] Read more.
In this study, the enhanced photodegradation of a high-concentration phenol red (PR) using very fine TiO2 nanocrystals by adding a KBrO3 electron acceptor was reported for the first time. The structural study on TiO2 nanocrystals using HRTEM, XRD, Raman, and EDX was performed and it confirmed the anatase phase of TiO2 nanocrystals. UV–Vis absorbance of 20 mg.L−1 PR was measured and the photodegradation was extracted. The KBrO3 concentration effects exhibited an important enhancement in the degradation of PR dye. The efficiency of PR was increased during 110 min from 75% of pure TiO2 to 92% and 98% of TiO2 with 1 mg and 5 mg KBrO3, respectively. For different samples, a first-order kinetic of dye degradation is confirmed. The instantaneous amount of degraded dye increased from 150 to 180 and 197 mg/g TiO2 with 1 mg and 5 mg KBrO3, respectively. The mechanism of the photodegradation reaction confirms the effect of OH- radicals on increasing the photocatalytic activities. The addition of electron acceptors KBrO3 improved the photocatalysis rate, where it prevented e-h recombination through conduction band electron capture, which increases the concentration of hydroxyl radicals. The proposed mechanism and results were supported by photocurrent measurements and a Raman spectra analysis of the final photodegraded products. The photocurrent of TiO2 was observed at 1.2 µA, which was significantly improved up to 13.2, and 21.3 µA with the addition of 1 mg and 5 mg of KBrO3. The Raman spectra of the final products confirmed that SO42− and carbons are byproducts of PR degradation. Full article
(This article belongs to the Special Issue Application of Photocatalytic Degradation in Pollutants Removal)
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