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Inorganics
Special Issues
Applications of Persulfate (PS) and Peroxymonosulfate (PMS) Activation
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Applications of Persulfate (PS) and Peroxymonosulfate (PMS) Activation

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Inorganic Materials".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 3905

Special Issue Editor

Dr. Yonglei Xing

E-Mail Website
Guest Editor
State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
Interests: photocatalyst; heterojunction; photoelectrocatalysis; oxidative degradation; peroxymonosulfate activation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The removal of emerging contaminants in traditional AOP (Advanced Oxidation Process) has shown good performance, featuring advanced oxidation technology to produce highly reactive free radicals, such as the hydroxyl radical (·OH), sulfate radical (SO4·−), and super oxide free radical (O2−·). They can degrade these antibiotics and other refractory organic pollutants into the low toxicity of small molecular products. This technology contains ozone oxidation, photochemical oxidation, catalytic wet oxidation, electrochemical oxidation, Fenton oxidation, Fenton-like oxidation, photocatalytic oxidation, and activated oxidation based on PMS according to the different generation modes of free radicals. ·OH is a strong oxidant with a REDOX potential of 2.8 V, which can destroy the structure of organic compounds. In recent years, advanced oxidation technology based on SO4− has attracted great attention. Compared to ·OH, SO4·− have the same or even higher REDOX potential (2.5–3.1 V), and in some cases, sulfate radicals are more selective and have a longer half-life than hydroxyl. Therefore, SO4·− is expected to show a better ability to degrade novel pollutants. It is important to note that persulfates (PS), including peroxymonosulfates (PMS) and peroxybisulfates (PDS), are low-cost, easy to store, and very stable. They can be activated to generate sulfate radicals through various methods, such as heating activation, alkali activation, radiation activation, ultrasonic activation, carbon-based material activation, activation of transition metal and its oxides, etc.

Dr. Yonglei Xing
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. Inorganics 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

  • persulfate (PS)
  • Peroxymonosulfate (PMS)
  • activation
  • advanced oxidation process
  • organic contaminant
  • degradation
  • organic removal
  • sulfate radical
  • electrochemical
  • radical pathway
  • non-radical pathway

Published Papers (1 paper)

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Research

15 pages, 2867 KiB  
Article
Simultaneous HPLC Determination of Clindamycin Phosphate, Tretinoin, and Preservatives in Gel Dosage Form Using a Novel Stability-Indicating Method
by Sadaf Sarfraz, Shahid Hussain, Mohsin Javed, Ali Raza, Shahid Iqbal, Hamad Alrbyawi, Samar O. Aljazzar, Eslam B. Elkaeed, Hamoud H. Somaily, Rami Adel Pashameah, Eman Alzahrani and Abd-ElAziem Farouk
Inorganics 2022, 10(10), 168; https://doi.org/10.3390/inorganics10100168 - 10 Oct 2022
Cited by 4 | Viewed by 3045
Abstract
The most well-known, effective medicines for acne therapy are clindamycin phosphate and tretinoin. For the first time, we have developed and validated a reversed-phase HPLC stability-indicating technique for the detection of clindamycin phosphate (CLP), tretinoin (TRN), and two preservatives, methylparaben (MP) and imidazolidinyl [...] Read more.
The most well-known, effective medicines for acne therapy are clindamycin phosphate and tretinoin. For the first time, we have developed and validated a reversed-phase HPLC stability-indicating technique for the detection of clindamycin phosphate (CLP), tretinoin (TRN), and two preservatives, methylparaben (MP) and imidazolidinyl urea (IU), simultaneously in this work. Most of the chromatographic conditions in the present study were optimized to achieve better separation. The best separation results were obtained using gradient elution on a C-18 (250 × 4.6 mm), 5 µm column, with a mobile phase consisting of solution A (1 mL/L ortho-phosphoric acid in water) and solution B (methanol), at a flow rate of 1.0 mL/min, with UV detection at wavelengths of 200 nm and 353 nm. Standard parameters such as system suitability, precision, accuracy, specificity, robustness, linearity, range, detection limit, quantification limit, and reagent stability were used to validate the developed technique. According to the standards of the International Council for Harmonization, all of the experimental parameters were found to be within allowable bounds (ICH). The simultaneous concentrations of clindamycin phosphate, tretinoin, methylparaben, and imidazolidinyl urea in pharmaceutical formulations were successfully determined using the suggested approach. The proposed RP-HPLC method detected no interfering peaks in the chromatogram. We may conclude from the data that the new RP-HPLC method can be utilized in pharmaceutical laboratories to simultaneously assess clindamycin phosphate, tretinoin, and two preservatives, methylparaben and imidazolidinyl urea, for both qualitative and quantitative analyses. Full article
(This article belongs to the Special Issue Applications of Persulfate (PS) and Peroxymonosulfate (PMS) Activation)
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