Article
Biotechnology & Applied Microbiology
Yijia Lin, Youzhi Dai, Li Zhang, Qian Wu
Summary: This study proposes a synergistic degradation method using calcium peroxide (CaO2) in Fenton oxidation for the treatment of phenol in water, which overcomes the disadvantages of traditional Fenton treatment. The system shows good degradation efficiency on phenol over a wide pH range, and the addition of CaO2 enhances the utilization of iron ions and H2O2.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Engineering, Environmental
Junrui Feng, Ying Zhang
Summary: CuFe2O4 particles were synthesized using the sol-gel self-combustion method and the enhancing mechanism of ascorbic acid (AA) in the CuFe2O4 photo-Fenton system was investigated. The presence of AA significantly improved the catalytic degradation efficiency, leading to a more effective generation of reactive species and homogeneous Fenton effect.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Jiaying Yan, Marcello Brigante, Gilles Mailhot, Wenbo Dong, Yanlin Wu
Summary: The study compared the performance, mechanism, degradation pathways, and product toxicity of Fe(III) activated persulfate (PS) and H2O2 modified by catechin (CAT) systems in degrading atenolol (ATL) as a model contaminant. The H2O2 system showed higher degradation efficiency (91.0%) compared to the PS system (52.4%) under the same experimental condition. CAT concentration influenced ATL degradation in the H2O2 system, while the optimal CAT concentration in the PS system was 5 μM. Both systems reduced luminescent bacteria inhibition rates by approximately 25%.
Article
Environmental Sciences
Jie Li, Yuxiang Yang, Zhiyong Han, Yan Huang, Hongming Yuan, Chaoying Ni
Summary: In this paper, Fe-Ce bimetallic-doped composites were synthesized using SiO2 aerogel as a carrier for the adsorption and degradation of trinitrogen from industrial or domestic wastewater. The photocatalytic efficiency was found to be the best when the catalyst dosage was 0.01 g, pH value was 11.0, and the concentration of H2O2 was 80 mmol/L, with the degradation efficiency of trinitrogen remaining above 70%.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Zhenyu Yang, Xuechang Ren, Suying Ding, Renhua Chen, Miao Tian
Summary: In this study, WS2 with different 1T phase content was prepared and its co-catalytic performance in the Fe3+/PMS system was investigated. It was found that WS2 had the best co-catalytic effect when the WCl6/TAA ratio was 1:12 and the temperature was 200 °C. The presence of the 1T phase in WS2 was confirmed by XRD, Raman, TEM, and XPS analysis. The WS2/Fe3+/PMS system efficiently degraded phenol solution and generated various active radicals. The 1T-WS2 also showed good reusability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Shuqi Zhang, Yan Wei, Jordin Metz, Shengbing He, Pedro J. J. Alvarez, Mingce Long
Summary: The study developed an efficient Fenton-like system using CaO2/BC composites as oxidants and tartaric acid-chelated Fe(III) as catalysts, enhancing Fe(II) regeneration and SMX degradation. The system showed higher efficiency in utilizing O-2(center dot-) for Fe(II) regeneration and enhancing SMX degradation. Positive correlation was found between SMX degradation rates and EPR signal intensities of biochar-derived persistent free radicals in CaO2/BC.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Hongliang Chen, Qian Long, Fuhua Wei, Zhun Wei, Meili Liu
Summary: Red mud can be modified through the reduction of oxalic acid and l-ascorbic acid in an acidic solution, resulting in a catalytic performance for the removal of phenol with an efficiency of over 99.1%. The excellent catalytic performance of the modified red mud is due to the production of various oxides, and increasing the dosage of catalyst and H2O2 can enhance the removal of phenol.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Hao Cheng, Xinyan Li, Chao Huang, Jian Zhu, Ping Wang, Heng Cao, Chongling Feng, Dingxun Ling, Hao Liu, Min Cheng
Summary: Commercial molybdenum carbide (Mo2C) and ferrous iron (Fe2+) were investigated as co-catalysts for the activation of H2O2 in the treatment of organic contaminants. The presence of Mo2C effectively decomposed H2O2 and accelerated the conversion of Fe3+/Fe2+ compared to traditional Fenton process. Mo2C/Fe2+/H2O2 exhibited a significantly higher catalytic reactivity than MoS2, and the degradation rate constant of Rhodamine B in Mo2C/Fe2+/H2O2 was three times higher than that in Fe2+/H2O2. XPS analysis showed that Mo(II) and Mo(IV) played major roles in Fe3+ reduction, and EPR analysis confirmed the involvement of .OH, O-2(-), and O-1(2) in Mo2C/Fe2+/H2O2. ECOSAR toxicity assessment revealed a decrease in the toxicity of RhB degradation products after treatment. Overall, this study presents a promising Mo2C co-catalyzed Fenton process for efficient abatement of organic contaminants.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Zhongmin Feng, Jingwen Yang, Liangyuan Zhu, Ting Sun
Summary: Researchers have successfully prepared bromine-functionalized bimetallic MOFs-FeCu(BDC-Br), which effectively degrades phenol in a Fenton-like process. The catalyst achieved a higher phenol degradation rate at a low dose. The effects of pH, humic acid, and coexisting ions on phenol degradation were examined.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Organic
A. A. Bragina, K. A. Babina, D. V. Kuleshov, A. I. Lysikov, E. V. Parkhomchuk
Summary: Three types of Fe-silicalite-1 based heterogeneous Fenton catalysts were synthesized, including microcrystals (m-FeZ) with an average size of 5 μm, hierarchical porous samples (h-FeZ) consisting of 100-200 nm nanocrystals, and hierarchical porous samples (n-FeZ-1,2,3) consisting of 30-50 nm nanocrystals prepared by steam-assisted crystallization. The performance of these catalysts in H2O2-mediated total oxidation of ethanol was compared with a conventional homogeneous Fenton catalyst.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Physical
Ping Ke, Danlin Zeng, Rong Wang, Jiawei Cui, Xin Li, Yidi Fu
Summary: Starch-based magnetic carbon microspheres (MCMs) were successfully synthesized for the degradation of simulated phenol-containing wastewater. The presence of magnetic Fe3O4 in MCMs was found to contribute to the efficient removal of phenol. Under certain operating conditions, a high degradation rate of phenol was achieved, and MCMs exhibited good reusability. The growth test of water spinach confirmed the potential of MCMs to reduce the harmfulness of phenol to aquatic plants. The degradation mechanism of phenol in wastewater was also proposed based on the experimental results.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Jingjing Zhang, Shan Qiu, Haopeng Feng, Tong Hu, Yanxin Wu, Ting Luo, Wangwang Tang, Dongbo Wang
Summary: A novel heterogeneous EF catalyst, Fe@Fe2O3-CeO2, was successfully synthesized for efficient degradation of organic pollutants. The catalyst exhibited excellent performance with high removal and mineralization efficiency, good recyclability and stability. The heterogeneous EF process showed promising catalytic activity towards degradation of various organic pollutants, providing insights into the reaction mechanism and facilitating its application in refractory wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Chetana R. Patil, Prashant Niphadkar, Sanjay P. Kamble, Chandrashekhar Rode
Summary: Hierarchical TS-1 materials were successfully synthesized and modified for hydroxylation of anisole, producing industrially important chemicals OMP and PMP. The effects of operational parameters on the reaction were studied, and it was found that DTS-1 catalyst exhibited higher conversion and selectivity compared to TS-1 catalyst, possibly due to the increased number of active sites and better mass transfer performance.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Sousan Hadi, Ensiyeh Taheri, Mohammad Mehdi Amin, Ali Fatehizadeh, Ramesh L. Gardas
Summary: The study evaluated the oxidative removal of methylene blue from synthetic textile wastewater using a combination of persulfate and heterogeneous Fenton-like process. The optimal conditions for MB removal were determined, and it was found that H2O2 and goethite doses greatly influenced the efficiency of MB removal. Reusing goethite for 5 cycles still maintained a high MB removal efficiency of 93%, indicating its good reusability. Radical trapping experiments identified hydroxyl radicals as the dominant radical for MB removal.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Ozkan Gormez, Fatma Gormez, Belgin Gozmen
Summary: This study compared the effects of homogeneous and heterogeneous electro-Fenton processes on the degradation of Metronidazole. It was found that the heterogeneous EF process had higher mineralization percentage and better reusability compared to the homogeneous EF process.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Physical
M. Garcia-Rodriguez, J. X. Flores-Lasluisa, D. Cazorla-Amoros, E. Morallon
Summary: This study highlights the use of metal oxide perovskites mixed with carbon materials as promising electrocatalysts for Zn-air batteries. The mixing method, particularly ball-milling, was found to strongly influence the particle size and interaction between the components, leading to improved electrocatalytic activity. The optimized electrocatalysts displayed enhanced performance in oxygen reduction and evolution reactions, outperforming a commercial Pt/C electrocatalyst in terms of cyclability and energy density.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Applied
Irina A. Shamanaeva, Zhichao Yu, Daria A. Golodnova, Dmitry A. Sladkovskiy, Kseniya A. Babina, Ekaterina Parkhomchuk
Summary: This study investigates the influence of the initial SiO2/Al2O3 ratio and approaches to precursor mixing on the phase, texture, acidity, and catalytic performance of SAPO-34 in the methanol-to-olefin process. It is found that ultrasonication pre-treatment improves the crystallinity of SAPO-34 crystals and enhances the incorporation of silicon into the AlPO framework. The acidity and lifetime of the catalysts are also improved with ultrasonication pre-treatment. As a result, US-treated catalysts show higher total olefin yield compared to non-treated ones at the corresponding SiO2/Al2O3 ratio.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Chemistry, Physical
Alicia Trigueros-Sancho, Beatriz Martinez-Sanchez, Diego Cazorla-Amoros, Emilia Morallon
Summary: One-step dry ball-milling method was used to prepare different electrocatalysts based on cobalt(II) or iron(II) phthalocyanines supported on commercial carbon materials, without the need for pre-treatment, solvent addition, or post-processing steps. The as-prepared catalysts exhibited improved electrocatalytic performance, and the FePc supported on CNovel showed excellent activity for oxygen reduction reaction in alkaline medium. This study provides a simple and cost-effective approach for catalyst manufacturing through mechanochemistry.
Article
Electrochemistry
Gabriel Alemany-Molina, Beatriz Martinez-Sanchez, Atsushi Gabe, Takeshi Kondo, Diego Cazorla-Amoros, Emilia Morallon
Summary: The interest in conductive boron-doped diamond powder (BDDP) electrodes has increased due to their stability, wide potential window, large specific surface area, and versatility. They are proposed as alternative cathode catalyst supports in fuel cells, especially in automobiles. In this study, different BDDP supports were used with different particle sizes and surface oxygen contents to support different iron species for oxygen reduction reaction. The electrocatalytic performance was influenced by the surface chemistry of the BDDP supports for FePc samples, while the particle size of the BDDP support played a determining role for Fe-C3N4 samples. DFT calculations provided insights into the interaction of FePc with the diamond surface.
ELECTROCHIMICA ACTA
(2023)
Article
Thermodynamics
J. X. Flores-Lasluisa, F. Huerta, D. Cazorla-Amoros, E. Morallon
Summary: LaNi1-xCoxO3 perovskite materials were synthesized for electrochemical reactions involving molecular oxygen. Incorporation of Co induced changes in material surface and improved electrocatalytic activity. Mixing perovskite metal oxides with carbon black enhanced electron transfer and catalytic activity. LaNi0.5Co0.5O3/Vulcan showed high stability and was a suitable bifunctional catalyst for both ORR and OER.
Article
Energy & Fuels
E. V. Parkhomchuk, K. V. Fedotov, A. I. Lysikov, A. V. Polukhin, E. E. Vorobyeva, I. A. Shamanaeva, N. N. Sankova, D. O. Shestakova, D. M. Reshetnikov, A. V. Volf, A. V. Kleymenov, V. N. Parmon
Summary: The study focuses on testing hierarchical meso-macroporous catalysts for three-stage hydroprocessing of atmospheric and vacuum residues. The properties of fresh and spent catalysts, the selection of optimal parameters for hydroprocessing, and the properties of petroleum products produced under optimal conditions were investigated. Various characterization techniques were used, including XRD, nitrogen adsorption-desorption, Hg-intrusion, SRXRF, TPD-NH3, and SEM. The proposed technology allows for the production of valuable oil products and MARPOL marine fuel that meet modern technical and environmental requirements. A pilot setup for three-stage residue hydroprocessing has been developed and is currently being tested.
Article
Chemistry, Organic
A. A. Bragina, K. A. Babina, D. V. Kuleshov, A. I. Lysikov, E. V. Parkhomchuk
Summary: Three types of Fe-silicalite-1 based heterogeneous Fenton catalysts were synthesized, including microcrystals (m-FeZ) with an average size of 5 μm, hierarchical porous samples (h-FeZ) consisting of 100-200 nm nanocrystals, and hierarchical porous samples (n-FeZ-1,2,3) consisting of 30-50 nm nanocrystals prepared by steam-assisted crystallization. The performance of these catalysts in H2O2-mediated total oxidation of ethanol was compared with a conventional homogeneous Fenton catalyst.
PETROLEUM CHEMISTRY
(2023)
Article
Biodiversity Conservation
Aleksandr F. Sabrekov, Irina E. Terentieva, Gregory J. McDermid, Yuriy V. Litti, Anatoly S. Prokushkin, Mikhail V. Glagolev, Alexey V. Petrozhitskiy, Peter N. Kalinkin, Dmitry V. Kuleshov, Ekaterina V. Parkhomchuk
Summary: The expansive plains of West Siberia contain significant carbon stocks, with extensive peatland complex overlying the largest-known hydrocarbon basin. Several methane seeps have been discovered in this area, and three hypotheses were proposed to explain their origin and migration pathways. The study used geochemical tools to test these hypotheses and found that the primary source of seep methane is the organic matter in raised bogs, with varying production pathways. The findings highlight the importance of methane lateral migration in West Siberia's bog-dominated landscapes and its potential occurrence in similar landscapes across the boreal-taiga biome.
GLOBAL CHANGE BIOLOGY
(2023)
Meeting Abstract
Chemistry, Physical
Gabriel Alemany-Molina, Beatriz Martinez-Sanchez, Emilia Morallon, Diego Cazorla-Amoros
Article
Chemistry, Multidisciplinary
Cristian Daniel Jaimes-Paez, Francisco Jose Garcia-Mateos, Ramiro Ruiz-Rosas, Jose Rodriguez-Mirasol, Tomas Cordero, Emilia Morallon, Diego Cazorla-Amoros
Summary: The aim of this study is to determine the Oxygen Reduction Reaction (ORR) activity of self-standing electrospun carbon fiber catalysts obtained from different metallic salt/lignin solutions. Carbon fibers were prepared by electrospinning technique with metallic nanoparticles (Co, Fe, Pt, and Pd) embedded in organosolv lignin. The presence of metals resulted in increased porosity during carbonization, leading to improved accessibility of the electrolyte to active sites. Carbon fibers loaded with 8 wt% palladium showed the best ORR activity with superior dispersion and balanced pore size distribution.
Review
Chemistry, Multidisciplinary
Jose Renato Guimaraes, Kaique Souza Goncalves Cordeiro Oliveira, Maria Carolina Pereira Goncalves, Joao Paulo Romanelli, Laiane Antunes Lopes, Angel Berenguer-Murcia, Roberto Fernandez-Lafuente, Paulo Waldir Tardioli
Summary: This article reviews the research on the immobilization of lipases on hydrophobic supports using systematic mapping (SM) concepts. It covers a wide range of lipases and supports, discussing their advantages and highlighting issues related to the immobilization process. Strategies to overcome these issues, such as immobilization on heterofunctional supports or intermolecular crosslinking, are also discussed. The structure, distribution, and co-occurrence frequency of lipases and supports are analyzed to determine potential research hotspots and unexplored advances in knowledge.
REACTION CHEMISTRY & ENGINEERING
(2023)
Review
Chemistry, Multidisciplinary
Jose Renato Guimaraes, Kaique Souza Goncalves Cordeiro Oliveira, Maria Carolina Pereira Goncalves, Joao Paulo Romanelli, Laiane Antunes Lopes, Angel Berenguer-Murcia, Roberto Fernandez-Lafuente, Paulo Waldir Tardioli
Summary: This article presents a systematic review of literature on the immobilization of lipases on hydrophobic supports. The study identifies various lipases and supports used in the research, discusses the advantages of immobilization on hydrophobic supports, and highlights problems and strategies for overcoming them.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Applied
Beatriz Martinez-Sanchez, Diego Cazorla-Amoros, Emilia Morallon
Summary: In this study, Iron(II) phthalocyanines supported on functionalized nanostructured carbon materials were investigated as electrocatalysts for the oxygen reduction reaction (ORR). The coordination mode of FePc and the structure of CNTs were found to be crucial for the ORR performance, and a novel strategy for developing precious metal-free catalysts for the ORR was proposed.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Nesrine Madani, Imane Moulefera, Souad Boumad, Diego Cazorla-Amoros, Francisco Jose Varela Gandia, Ouiza Cherifi, Naima Bouchenafa-Saib
Summary: Activated carbon is successfully prepared from Stipa tenacissima leaves using chemical activation method with phosphoric acid. The optimal conditions for preparation are an activation temperature of 450 degrees C and a ratio of STL to phosphoric acid of 1:2. The obtained activated carbon exhibits a high surface area and strong adsorption capacity.
C-JOURNAL OF CARBON RESEARCH
(2022)
