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7,909 Results Found

  • Feature Paper
  • Article
  • Open Access
60 Citations
8,285 Views
19 Pages

Effective Dye Degradation by Graphene Oxide Supported Manganese Oxide

  • Hayarpi Saroyan,
  • George Z. Kyzas and
  • Eleni A. Deliyanni

14 January 2019

Graphene oxide (GO) was used as a support for manganese oxide (MnO2) for the preparation of a nanocomposite catalyst for the degradation of an azo dye, Reactive Black 5 (RB5). The nanocomposite was characterized for the structure by XRD, for the morp...

  • Feature Paper
  • Article
  • Open Access
29 Citations
5,657 Views
18 Pages

Reactive Black 5 Degradation on Manganese Oxides Supported on Sodium Hydroxide Modified Graphene Oxide

  • Hayarpi Saroyan,
  • Dimitra Ntagiou,
  • Kyriazis Rekos and
  • Eleni Deliyanni

27 May 2019

Sodium hydroxide-modified graphene oxide was used as manganese oxides support for the preparation of nanocomposites via a one-pot preparation route for the degradation of Reactive Black 5. The nanocomposites were characterized for their structure by...

  • Feature Paper
  • Review
  • Open Access
26 Citations
5,188 Views
34 Pages

Oxidative Degradation of Pharmaceuticals: The Role of Tetrapyrrole-Based Catalysts

  • Giusi Piccirillo,
  • Rafael T. Aroso,
  • Fábio M. S. Rodrigues,
  • Rui M. B. Carrilho,
  • Sara M. A. Pinto,
  • Mário J. F. Calvete and
  • Mariette M. Pereira

4 November 2021

Nowadays, society’s widespread consumption of pharmaceutical drugs and the consequent accumulation of such compounds or their metabolites in effluents requires the development of efficient strategies and systems that lead to their effective degradati...

  • Communication
  • Open Access
1,904 Views
8 Pages

Synthesis and Oxidative Degradation of Leucine-Based Poly(diacylhydrazine)

  • Kanda Wongwailikhit,
  • Ratha Suwannakeeree and
  • Nobuhiro Kihara

27 April 2024

Diacylhydrazine is thermally and chemically stable, and it remains inert to oxygen even at high temperatures. However, it is rapidly oxidized by sodium hypochlorite, leading to its decomposition into carboxylic acid and nitrogen gas. In the synthesis...

  • Article
  • Open Access
1,131 Views
19 Pages

21 August 2025

The development of stable and efficient heterogeneous Fenton oxidation for organic pollutant degradation is crucial to avoid iron sludge formation and cumbersome filtration processes. In this study, iron oxide/carbon aerogel was prepared via the sol&...

  • Article
  • Open Access
3 Citations
1,995 Views
11 Pages

Characterization of Oxidative Degradation Product of Darunavir by LC-MS/MS

  • Karthik YAMJALA,
  • Jeevitha ATUKURI,
  • Krishnaveni NAGAPPAN,
  • Nivedeetha HALEKOTE SHIVARAJU and
  • Meyyanathan SUBRAMANIA NAINAR

30 June 2015

A rapid, selective, and reliable LC-MSn method has been developed and validated for the isolation and structural characterization of the degradation product of darunavir (DRV). DRV, an HIV-1 protease inhibitor, was subjected to intrinsic oxidative st...

  • Article
  • Open Access
32 Citations
9,890 Views
27 Pages

Comparative Stability Study of Polysorbate 20 and Polysorbate 80 Related to Oxidative Degradation

  • Benedykt Kozuch,
  • Johanna Weber,
  • Julia Buske,
  • Karsten Mäder,
  • Patrick Garidel and
  • Tim Diederichs

The surfactants polysorbate 20 (PS20) and polysorbate 80 (PS80) are utilized to stabilize protein drugs. However, concerns have been raised regarding the degradation of PSs in biologics and the potential impact on product quality. Oxidation has been...

  • Review
  • Open Access
43 Citations
5,769 Views
20 Pages

In recent years, organic pollutants have become a global problem due to their negative impact on human health and the environment. Photocatalysis is one of the most promising methods for the removal of organic pollutants from wastewater, and oxide se...

  • Article
  • Open Access
4 Citations
1,488 Views
21 Pages

Screening Refractory Dye Degradation by Different Advanced Oxidation Processes

  • Imane Ouagued,
  • Marc Cretin,
  • Eddy Petit,
  • Geoffroy Lesage,
  • Abderrahmane Djafer,
  • Abdallah Ouagued and
  • Stella Lacour

5 February 2025

This study investigated Rhodamine B (RhB) degradation by electro-Fenton (EF), anodic oxidation (AO), and their combination (EF/AO), using a carbon felt cathode coupled to a sub-stoichiometric titanium dioxide Magnéli phase (Ti4O7) anode or a p...

  • Review
  • Open Access
81 Citations
10,280 Views
27 Pages

Transition Metal Oxides and Their Composites for Photocatalytic Dye Degradation

  • Preety Ahuja,
  • Sanjeev Kumar Ujjain,
  • Rajni Kanojia and
  • Pankaj Attri

Transition metal oxides (TMO) and their carbon composites have become a glittering upcoming material science candidate. Their interesting properties, such as their meticulous morphology, plentiful availability, flexible surface chemistry along with o...

  • Article
  • Open Access
17 Citations
2,750 Views
25 Pages

14 August 2022

A mixed oxide of titania–silica oxides (TixSiy oxides) was successfully prepared via the sol–gel technique from our previous work. The use of TixSiy oxides to improve the mechanical properties, photocatalytic efficiency, antibacterial pro...

  • Article
  • Open Access
4 Citations
2,661 Views
12 Pages

21 October 2022

Carbendazim (CBZ), a widely used fungicide in agriculture, is frequently detected in aquatic environment and causes significant concerns because of its endocrine-disrupting activity. This study investigated the degradation kinetics of CBZ in ferrate...

  • Article
  • Open Access
1,325 Views
14 Pages

21 August 2025

The treatment of organic phosphate ester (OPE) pollutants in water is a challenging but highly necessary task. In this study, an advanced oxidation process through light activation of peroxymonosulfate (PMS) involving graphene oxide (GO) as a promote...

  • Article
  • Open Access
11 Citations
5,061 Views
15 Pages

Degradation of Diallyl Phthalate (DAP) by Fenton Oxidation: Mechanistic and Kinetic Studies

  • Sondos Dbira,
  • Nasr Bensalah,
  • Moustafa M. Zagho and
  • Ahmed Bedoui

21 December 2018

In this work, the degradation and mineralization of Diallyl Phthalate (DAP) in water by Fenton oxidation was investigated. The effects of different experimental parameters including the initial pH, the hydrogen peroxide (H2O2) dose, the catalyst (Fe2...

  • Article
  • Open Access
14 Citations
4,082 Views
17 Pages

Isolation and Structure Determination of Echinochrome A Oxidative Degradation Products

  • Natalia P. Mishchenko,
  • Elena A. Vasileva,
  • Andrey V. Gerasimenko,
  • Valeriya P. Grigorchuk,
  • Pavel S. Dmitrenok and
  • Sergey A. Fedoreyev

18 October 2020

Echinochrome A (Ech A, 1) is one of the main pigments of several sea urchin species and is registered in the Russian pharmacopeia as an active drug substance (Histochrome®), used in the fields of cardiology and ophthalmology. In this study, Ech A...

  • Article
  • Open Access
62 Citations
8,689 Views
22 Pages

Enhanced Photocatalytic Degradation of Malachite Green Dye Using Silver–Manganese Oxide Nanoparticles

  • Zhong Xu,
  • Noor Zada,
  • Fazal Habib,
  • Hamid Ullah,
  • Kashif Hussain,
  • Naveed Ullah,
  • Marwa Bibi,
  • Maria Bibi,
  • Huma Ghani and
  • Habib Ullah
  • + 3 authors

25 August 2023

Efficient and excellent nanoparticles are required for the degradation of organic dyes in photocatalysis. In this study, silver–manganese oxide nanoparticles (Ag-Mn-NPs) were synthesized through a wet chemical precipitation method and character...

  • Article
  • Open Access
16 Citations
4,481 Views
16 Pages

19 August 2019

Deoxynivalenol (DON) is a common mycotoxin, which is known to be extremely harmful to human and livestock health. In this study, DON was degraded by electrochemical oxidation (ECO) using a graphite electrode and NaCl as the supporting electrolyte. Th...

  • Article
  • Open Access
28 Citations
3,503 Views
13 Pages

24 June 2021

Ciprofloxacin (CIP), as a representative broad-spectrum antibiotic, poses a major threat to human health and the ecological environment as a result of its abuse and emissions. In this study, a highly active Mn2+-oxidizing bacterium, Pseudomonas sp. C...

  • Article
  • Open Access
6 Citations
5,205 Views
14 Pages

5 August 2020

The mechanism of diclofenac (DIC) degradation by tunnel-structured γ-MnO2, with superior oxidative and catalytic abilities, was determined in terms of solution pH. High-performance liquid chromatography with mass spectroscopy (HPLC–MS) wa...

  • Article
  • Open Access
6 Citations
2,740 Views
13 Pages

Fabrication of Manganese Oxide/PTFE Hollow Fiber Membrane and Its Catalytic Degradation of Phenol

  • Yan Wang,
  • Diefei Hu,
  • Zhaoxia Zhang,
  • Juming Yao,
  • Jiri Militky,
  • Jakub Wiener,
  • Guocheng Zhu and
  • Guoqing Zhang

30 June 2021

P-aminophenol is a hazardous environmental pollutant that can remain in water in the natural environment for long periods due to its resistance to microbiological degradation. In order to decompose p-aminophenol in water, manganese oxide/polytetraflu...

  • Article
  • Open Access
6 Citations
4,325 Views
30 Pages

9 December 2022

In this paper, the performance variations of SiC MOSFET-based voltage and current source inverters under gate oxide degradation are studied. It is confirmed that the turn-on and turn-off delays of SiC MOSFETs change significantly by high electric fie...

  • Review
  • Open Access
40 Citations
10,162 Views
23 Pages

10 January 2023

Solid oxide fuel cell (SOFC) performance degradation analysis and optimization studies are important prerequisites for its commercialization. Reviewing and summarizing SOFC performance degradation studies can help researchers identify research gaps a...

  • Article
  • Open Access
1 Citations
1,350 Views
29 Pages

18 November 2025

Amine-based CO2 absorption is a leading technology for post-combustion carbon capture, but solvent degradation remains a critical barrier to its long-term sustainability. Degradation reduces capture efficiency, increases solvent make-up costs, and ge...

  • Article
  • Open Access
6 Citations
2,280 Views
13 Pages

6 September 2023

Ferric stearate (FeSt3) is very efficient in accelerating polyethylene (PE) degradation, but there is a lack of exploration of its role in accelerating the early stages of polyethylene photo-oxidative degradation. This study aimed to investigate the...

  • Article
  • Open Access
14 Citations
3,771 Views
20 Pages

Comparative Degradation Studies of Carmine Dye by Photocatalysis and Photoelectrochemical Oxidation Processes in the Presence of Graphene/N-Doped ZnO Nanostructures

  • Fatma El-Sayed,
  • Mai S. A. Hussien,
  • Thekrayat H. AlAbdulaal,
  • Ahmed Ismail,
  • Heba Y. Zahran,
  • Ibrahim S. Yahia,
  • Mohamed Sh. Abdel-wahab,
  • Yasmin Khairy,
  • Tarik E. Ali and
  • Medhat A. Ibrahim

11 April 2022

The goal of this study was to synthesize a UV-light-active ZnO photocatalyst by modifying it with nitrogen and graphene, then applying it to the degradation of carmine dye utilizing two promising technologies: photocatalysis and electrochemical oxida...

  • Article
  • Open Access
49 Citations
6,444 Views
16 Pages

7 August 2019

This study investigates the effect of different packaging methods—namely, air packaging (AP), vacuum packaging (VP), and modified atmosphere packaging (MAP)—on the protein oxidation and degradation of grouper (Epinephelus coioides) fillet...

  • Article
  • Open Access
4 Citations
7,011 Views
12 Pages

Study of the Oxidative Forced Degradation of Glutathione in Its Nutraceutical Formulations Using Zone Fluidics and Green Liquid Chromatography

  • Apostolia Tsiasioti,
  • Constantinos K. Zacharis,
  • Anastasia-Stella Zotou and
  • Paraskevas D. Tzanavaras

In the present study, we report the results of our investigation of the oxidative forced degradation of glutathione in its nutraceutical formulations by two validated analytical methods. The first is based on the reaction of glutathione with o-phthal...

  • Article
  • Open Access
11 Citations
4,067 Views
17 Pages

Degradation of Bisphenol A by CeCu Oxide Catalyst in Catalytic Wet Peroxide Oxidation: Efficiency, Stability, and Mechanism

  • Zhaojie Jiao,
  • Ligong Chen,
  • Guilin Zhou,
  • Haifeng Gong,
  • Xianming Zhang,
  • Yunqi Liu and
  • Xu Gao

The CeCu oxide catalyst CC450 was prepared by citric acid complex method and the catalytic wet peroxide oxidation (CWPO) reaction system was established with bisphenol A (BPA) as the target pollutant. By means of characterization, this research inves...

  • Article
  • Open Access
6 Citations
4,800 Views
20 Pages

Spin Trapping Analysis of Radical Intermediates on the Thermo-Oxidative Degradation of Polypropylene

  • Thu Anh Nguyen,
  • Hui Ming Lim,
  • Kenji Kinashi,
  • Wataru Sakai,
  • Naoto Tsutsumi,
  • Satoko Okubayashi,
  • Satoru Hosoda and
  • Tetsu Sato

30 December 2022

The purpose of this study is to investigate the thermo-oxidative degradation behavior of polypropylene (PP) by comparing three types of pristine PP granules (consisting of homopolymer, random copolymer, and block copolymer) with their corresponding o...

  • Feature Paper
  • Article
  • Open Access
13 Citations
4,458 Views
28 Pages

Origin of Steam Contaminants and Degradation of Solid-Oxide Electrolysis Stacks

  • Dominik Schäfer,
  • Larissa Queda,
  • Volker Nischwitz,
  • Qingping Fang and
  • Ludger Blum

19 March 2022

Two once-through steam generators and a combination of a steam generator and a gas preheater for supplying feed gases to solid-oxide electrolysis stacks were evaluated for their carryover characteristics of contaminants from the feed-water into the s...

  • Review
  • Open Access
49 Citations
8,437 Views
25 Pages

Degradation Mechanisms of Metal-Supported Solid Oxide Cells and Countermeasures: A Review

  • Zhipeng Zhou,
  • Venkata Karthik Nadimpalli,
  • David Bue Pedersen and
  • Vincenzo Esposito

7 June 2021

Metal-supported oxide cells (MSCs) are considered as the third-generation solid oxide cells (SOCs) succeeding electrolyte-supported (first generation) and anode-supported (second generation) cells, which have gained much attention and progress in the...

  • Article
  • Open Access
14 Citations
3,179 Views
12 Pages

28 April 2023

The problem of health status prediction of insulated-gate bipolar transistors (IGBTs) has gained significant attention in the field of health management of power electronic equipment. The performance degradation of the IGBT gate oxide layer is one of...

  • Review
  • Open Access
13 Citations
4,428 Views
35 Pages

Morphological Dependence of Metal Oxide Photocatalysts for Dye Degradation

  • Ahmed H. Naggar,
  • Abdelaal S. A. Ahmed,
  • Tarek A. Seaf El-Nasr,
  • N. F. Alotaibi,
  • Kwok Feng Chong and
  • Gomaa A. M. Ali

18 December 2023

There is no doubt that organic dyes currently play an indispensable role in our daily life; they are used in products such as furniture, textiles, and leather accessories. However, the main problems related to the widespread use of these dyes are the...

  • Article
  • Open Access
6 Citations
2,175 Views
14 Pages

Prediction of IGBT Gate Oxide Layer’s Performance Degradation Based on MultiScaleFormer Network

  • Shilie He,
  • Meiling Yu,
  • Yiqiang Chen,
  • Zhenwei Zhou,
  • Lubin Yu,
  • Chao Zhang and
  • Yuanhua Ni

30 July 2024

Insulated gate bipolar transistors (IGBTs) are widely used in power electronic devices, and their health prediction problems have attracted much attention in the field of power electronic equipment health management. The performance degradation of IG...

  • Article
  • Open Access
3 Citations
3,597 Views
12 Pages

Metal Oxide Electrospun Nanofibrous Membranes for Effective Dye Degradation and Sustainable Photocatalysis

  • Veluru Jagadeesh Babu,
  • Syed Sulthan Alaudeen Abdul Haroon Rashid,
  • Subramanian Sundarrajan and
  • Seeram Ramakrishna

3 January 2023

The fabrication of metal oxide nanofibers using (titanium (IV) isopropoxide) and (tin (IV) tert-butoxide) of weight ratio 1:1 precursor in presence of poly (vinyl pyrrolidone) as a binder using a well-known electrospinning technique is reported. The...

  • Article
  • Open Access
9 Citations
2,489 Views
14 Pages

30 October 2022

The chemical co-precipitation method was used to prepare magnetically separable Fe–Mn oxide composites, and the degradation of p-chloroaniline (PCA) using MnFe2O4 activated peroxydisulfate (PDS). The MnFe2O4 catalyst exhibited highly catalytic...

  • Article
  • Open Access
9 Citations
3,375 Views
17 Pages

24 February 2025

The suitability of advanced oxidation processes to industrial pollutants was evaluated. Three dyes were selected for research: Indigo carmine, Tartrazine, and Allura red AC. Single processes (oxidation by H2O2, Fenton process, ozonation), and hybrid...

  • Article
  • Open Access
1 Citations
1,542 Views
16 Pages

30 August 2024

The increasingly severe antibiotic pollution has become one of the most critical issues. In this study, a zinc peroxide/peroxymonosulfate (ZnO2/PMS) double-oxidation system was developed for tetracycline (TC) degradation. A small amount of ZnO2 (10 m...

  • Feature Paper
  • Article
  • Open Access
1 Citations
2,011 Views
18 Pages

Oxidative Degradation of Anthocyanins in Red Wine: Kinetic Characterization Under Accelerated Aging Conditions

  • Khulood Fahad Saud Alabbosh,
  • Violeta Jevtovic,
  • Jelena Mitić,
  • Zoran Pržić,
  • Vesna Stankov Jovanović,
  • Reem Ali Alyami,
  • Maha Raghyan Alshammari,
  • Badriah Alshammari and
  • Milan Mitić

14 July 2025

The oxidative degradation of anthocyanins in red wine was investigated under controlled conditions using hydroxyl radicals generated in the presence of Cu (II) as a catalyst. A full factorial experimental design with 23 replicates was used to evaluat...

  • Article
  • Open Access
5 Citations
2,957 Views
16 Pages

Persulfate–Based Advanced Oxidation Process for Chlorpyrifos Degradation: Mechanism, Kinetics, and Toxicity Assessment

  • Youxin Xu,
  • Chenxi Zhang,
  • Haobing Zou,
  • Guangrong Chen,
  • Xiaomin Sun,
  • Shuguang Wang and
  • Huifang Tian

9 March 2024

Persulfate-based advanced oxidation process has been proven to be a promising method for the toxic pesticide chlorpyrifos (CPY) degradation in wastewater treatment. However, due to the limitation for the short-lived intermediates detection, a compreh...

  • Article
  • Open Access
1,851 Views
17 Pages

16 February 2025

Gate-oxide degradation in silicon carbide (SiC) metal oxide–semiconductor field-effect transistors (MOSFETs) is a significant concern. Consequently, several methods have been developed to monitor the aging degree. In this article, a temperature...

  • Review
  • Open Access
1 Citations
2,443 Views
24 Pages

Metformin Degradation by Advanced Oxidation Processes: Performance, Limitations, and Environmental Concerns

  • Jaime M. Castañeda-Sánchez,
  • Felipe de J. Silerio-Vázquez,
  • Ignacio Villanueva-Fierro,
  • Juan Carlos García-Prieto,
  • Luis A. González-Burciaga and
  • José B. Proal-Nájera

This review provides a descriptive analysis of metformin, highlighting its environmental presence and classification as an emerging contaminant. It examines the risks associated with metformin and evaluates advanced oxidation processes (AOPs) for its...

  • Article
  • Open Access
1,121 Views
23 Pages

Highly Efficient Graphene Oxide/Zinc Oxide/Lignin Catalyst for Photocatalytic Degradation of Methylene Blue and Gentian Violet

  • Tamanna Yakub,
  • Anupama Asthana,
  • Sunita Sanwaria,
  • Ajaya Kumar Singh and
  • Sónia A. C. Carabineiro

1 September 2025

This study presents a comprehensive investigation of a novel graphene oxide/zinc oxide/lignin (GO/ZnO/lignin) nanocomposite for the photocatalytic degradation of methylene blue (MB) and gentian violet (also known as crystal violet, CV) dyes in aqueou...

  • Article
  • Open Access
692 Views
26 Pages

Facile Hydrothermal Synthesis of a Graphene Oxide–Cerium Oxide Nanocomposite: A Highly Efficient Catalyst for Azo Dye Degradation

  • Abdur Rauf,
  • M. I. Khan,
  • Muhammad Ismail,
  • Mohamed Shaban,
  • Nada Alfryyan,
  • Hind Alshaikh,
  • Saima Gul,
  • Asif Nawaz and
  • Sher Bahadar Khan

21 November 2025

The pervasive discharge of synthetic dyes into aquatic ecosystems poses a significant threat due to their chemical stability, low biodegradability, and carcinogenicity. Conventional dye remediation methods—such as biological treatments, coagula...

  • Article
  • Open Access
74 Citations
8,745 Views
13 Pages

Comparative Investigation on the Soil Burial Degradation Behaviour of Polymer Films for Agriculture before and after Photo-Oxidation

  • Francesco Paolo La Mantia,
  • Laura Ascione,
  • Maria Chiara Mistretta,
  • Marco Rapisarda and
  • Paola Rizzarelli

30 March 2020

Polymer films based on biodegradable polymers, polyethylene (PE) and modified PE with oxo-degradable additive were prepared by film blowing. Carbon black (1%) was added to all the films. Commercial biodegradable Ecovio® and Mater-Bi® samples were use...

  • Review
  • Open Access
35 Citations
6,799 Views
50 Pages

Recent Advances in Endocrine Disrupting Compounds Degradation through Metal Oxide-Based Nanomaterials

  • Claudio Imparato,
  • Aurelio Bifulco,
  • Brigida Silvestri and
  • Giuseppe Vitiello

3 March 2022

Endocrine Disrupting Compounds (EDCs) comprise a class of natural or synthetic molecules and groups of substances which are considered as emerging contaminants due to their toxicity and danger for the ecosystems, including human health. Nowadays, the...

  • Article
  • Open Access
13 Citations
2,976 Views
13 Pages

ZnO/Graphene Oxide on Halloysite Nanotubes as a Superabsorbent Nanocomposite Photocatalyst for the Degradation of Organic Dyes

  • Jongik Park,
  • Hyungwook Lee,
  • Keonku Lee,
  • Sieun Noh,
  • Soyeong Jin,
  • Jungho Jae,
  • Youngdo Jeong and
  • Jaegeun Noh

21 June 2023

Using renewable photocatalysts for pollutant degradation represents a promising approach to addressing environmental water challenges by harnessing solar energy without additional energy consumption. However, for the practical use of photocatalysts,...

  • Article
  • Open Access
17 Citations
3,443 Views
12 Pages

2 November 2022

Dye wastewater due to industrialization, urbanization and academic activities has become one of the most important environmental issues today. Photocatalytic degradation technology is considered as a promising technology for treating dye wastewater d...

  • Article
  • Open Access
751 Views
19 Pages

23 July 2025

Osteoarthritis and metastatic bone cancers create pathological oxidative environments characterized by elevated reactive oxygen species (ROS). ROS impair bone regeneration by degrading the scaffold and suppressing mineralization. To address these cha...

  • Article
  • Open Access
25 Citations
4,391 Views
16 Pages

Degradation of Losartan in Fresh Urine by Sonochemical and Photochemical Advanced Oxidation Processes

  • John F. Guateque-Londoño,
  • Efraím A. Serna-Galvis,
  • Yenny Ávila-Torres and
  • Ricardo A. Torres-Palma

3 December 2020

In this work, the degradation of the pharmaceutical losartan, in simulated fresh urine (which was considered because urine is the main excretion route for this compound) by sonochemistry and UVC/H2O2 individually, was studied. Initially, special atte...

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