Article
Chemistry, Multidisciplinary
Vincenzo Campisciano, Laura Valentino, Anthony Morena, Andrea Santiago-Portillo, Nicolo Saladino, Michelangelo Gruttadauria, Carmela Aprile, Francesco Giacalone
Summary: This study proposes an efficient method for the conversion of CO2 into cyclic carbonates using a hybrid system based on aluminum chloride tetrastyrylporphyrin and multi-walled carbon nanotubes. The prepared materials exhibit high catalytic activity and stability under solvent-free conditions.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Applied
Prisco Prete, Antonino Fiorentino, Luigi Rizzo, Antonio Proto, Raffaele Cucciniello
Summary: The importance of evaluating catalytic activity for different catalysts under the same conditions is emphasized in this study. The determination of turnover frequency is introduced to evaluate the activity and improve catalyst design. By comparing the phenol degradation in the photo-Fenton process, it is found that Fe-IDS catalyst shows the best performance while Cu-IDS is inactive.
Review
Engineering, Environmental
Jingjing Li, Junhua You, Zhiwei Wang, Yao Zhao, Jingsheng Xu, Xuanhao Li, Hangzhou Zhang
Summary: This paper reviews the main advances in the catalytic oxidation of alpha-Fe2O3-based photo-Fenton materials for the treatment of refractory wastewater in recent years, compares and analyzes strategies to enhance the degradation efficiency of these catalysts, and proposes some strategies to optimize their performance, aiming to suggest new ideas for the future development of the field of photo-Fenton catalysis.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Haoran Du, Xiuping Li, Zhiyang Cao, Shao Zhang, Wenzhao Yu, Fengyu Sun, Shengyao Wang, Jingjing Zhao, Jiaqi Wang, Yuan Bai, Juanjuan Yang, Ping Yang, Bo Jiang, Hexing Li
Summary: In this study, we reported a novel nanocomposite of highly dispersed Au and Fe species on ZnO (AuFe-ZnO). During photocatalytic O2 oxidation of CH4 to CH3OH, this AuFe-ZnO acts as a bifunctional catalyst to drive one-pot cascade reactions (O2 + H2O-* H2O2 and CH4 + H2O2-* CH3OH + H2O). The synergetic effects of Au, Fe, and ZnO result in a high CH3OH yield of 1365 mu mol center dot g- 1 center dot h-1 with high CH3OH selectivity of up to 90.7%.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Cesar M. Venier, Leandro O. Conte, Monserrat Perez-Moya, Moises Graells, Norberto M. Nigro, Orlando M. Alfano
Summary: This study investigates the photo-Fenton degradation process of Paracetamol (PCT) on an annular pilot plant reactor using Computational Fluid Dynamics (CFD). The results show that a double addition of H2O2 significantly reduces the reaction times, and increasing Qr does not change the PCT degradation rate.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Physical
Noelia Mota, Elena Millan Ordonez, Barbara Pawelec, Jose Luis G. Fierro, Rufino M. Navarro
Summary: This review presents the latest progress in the synthesis of bifunctional/hybrid catalytic systems for the CO2-to-DME process, discussing the challenges of combining metal and acid functionalities in the catalyst, and the different strategies employed to improve DME formation efficiency.
Article
Environmental Sciences
Yuhang Li, Hui Cao, Wenli Liu, Pengtao Liu
Summary: In this study, a PVA/CNF/Fe3O4 hybrid hydrogel was prepared using the in-situ co-precipitation method. The hybrid hydrogel showed high efficiency in catalytic degradation of tetracycline.
Article
Materials Science, Multidisciplinary
Wen Wang, Songlin Fan, Yanjuan Zhang, Chao Fan, Zuqiang Huang, Huayu Hu, Yuben Qin
Summary: The cellulose pretreated by mechanical activation in the presence of FeCl3 was dissolved and regenerated as a reinforcing phase for the Fe3+-bridged cellulose-alginate composite, which was then modified with polydopamine to create a photo-Fenton catalyst. The resulting MAFCC-Alg/Ca-Fe@PDA gel beads exhibited outstanding mechanical properties, catalytic activity, reusability, and stability over multiple cycles. This effective synthetic route provides a stable and high-performance FeAlg composite catalyst.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Chemical
Mohammed Saleh, Zeynep Bilici, Merve Kaya, Mutlu Yalvac, Hudaverdi Arslan, H. Cengiz Yatmaz, Nadir Dizge
Summary: The study investigated the use of basalt as a catalyst for Fenton and photo-Fenton reactions for the degradation of methylene Blue and Basic Red 18, exploring optimal conditions and demonstrating basalt's capability for reuse as a catalyst over three consecutive cycles.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Energy & Fuels
Anthony Morena, Vincenzo Campisciano, Andrea Santiago-Portillo, Michelangelo Gruttadauria, Francesco Giacalone, Carmela Aprile
Summary: Two heterogeneous catalysts were prepared to convert CO2 into epoxides. The synergic cooperation of the two co-catalytic species (Lewis acid/imiBr) was observed. POSS-TSP-AlCl-imiBr showed excellent recyclability and high catalytic activity.
Article
Engineering, Environmental
Arshid Bashir, Aaliya Qureashi, Murtaza Gani, Altaf Hussain Pandith, Lateef Ahmad Malik, Jaime Moreno Perez
Summary: In this study, a sustainable and robust nano-catalytic material, nZVI-FBC, was developed by decorating peach skin-derived fibrous biochar with spherical zerovalent iron nanoparticles (nZVI). The excellent performance and stability of the nanocatalyst were confirmed through comprehensive characterization and analysis.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Ivan Valles, Ivan Sciscenko, Margarita Mora, Pau Mico, Ana M. Amat, Lucas Santos-Juanes, Javier Moreno-Andres, Antonio Arques
Summary: In this study, the effect of Fe(III) complexation by phenolic derivatives on photo-Fenton was systematically investigated. Solutions containing a mixture of six pollutants were treated by solar simulated photo-Fenton under specific conditions. It was found that the efficiency of ligands increased with the presence of -OH groups, but decreased with the presence of -COOH and -OCH3 groups, which was correlated with the ability of ligands to reduce Fe(III) to Fe(II).
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Environmental Sciences
Pakpoom Athikaphan, Kunlanut Wongsanga, Sittisak Klanghiran, Natthaphong Lertna, Arthit Neramittagapong, Shawn C. C. Rood, Supinya Nijpanich, Sutasinee Neramittagapong
Summary: The degradation of formaldehyde in a photo-Fenton reaction was studied using n-ZVI/TiO2 as the catalyst. The effects of %n-ZVI loading, catalyst dosage, H2O2, and pH on formaldehyde degradation were investigated. The optimal conditions for complete removal of formaldehyde within 30 min were found to be a n-ZVI loading of 2 wt.%, a catalyst dosage of 0.5 g/L, 30 mM H2O2, and an initial pH of 3. The results showed that 2%n-ZVI/TiO2 exhibits excellent potential as a photo-Fenton catalyst for environmentally friendly formaldehyde degradation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Kaixing Cai, Ping Liu, Zheng Chen, Peng Chen, Fei Liu, Tianxiang Zhao, Duan-Jian Tao
Summary: In this study, a series of porous ionomer polymers (PIPs) with special functions were successfully constructed for CO2 capture and conversion. By adjusting the structure and properties, as well as the cross-linked ratios, the CO2 adsorption capacity and catalytic performance of PIPs were greatly improved. The results show that these functionalized PIPs have great potential for applications in CO2 separation and conversion.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xin Qin, Kun Zhao, Xie Quan, Peike Cao, Shuo Chen, Hongtao Yu
Summary: In this study, a metal-free e-Fenton system using O-doped carbon nanotubes (OCNTs) as the bifunctional metal-free cathode was designed for the degradation of organic pollutants. The system demonstrated excellent performance under neutral conditions, with a phenol degradation kinetic constant of 0.071 min-1 and a TOC removal rate of 76.6% within 300 min. This in-situ metal-free e-Fenton system shows promise as a strategy for actual wastewater treatment, with a specific energy consumption lower than reported heterogeneous electro-Fenton systems.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Veronica Poza-Nogueiras, Angela Moratalla, Marta Pazos, Angeles Sanroman, Cristina Saez, Manuel A. Rodrigo
Summary: In this research, a bench-scale installation was tested for the heterogeneous electro-Fenton treatment of clofibric acid. The use of a pressurized-jet aerator and iron-containing alginate beads as catalysts showed promising results in enhancing the efficiency of pollutant removal and reducing energy consumption. However, further increase in pressure did not lead to significant improvement. The integrity of the catalyst was not compromised by pressure. A mathematical model was also developed to better understand the behavior of the reaction system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Pablo Blanco-Canella, Gabriela Lama, Ma Angeles Sanroman, Marta Pazos
Summary: Disinfection through the generation of hydroxyl and sulfate radicals was validated and optimized in this study. The optimized conditions were applied to real matrices from wastewater treatment plants, demonstrating the potential of these processes for disinfection.
Article
Biotechnology & Applied Microbiology
Abdelmageed M. M. Othman, Angeles Sanroman, Diego Moldes
Summary: In this study, it was found that the multi-point covalently immobilized laccase from Myceliophthora thermophila on the modified immobilized carrier (Immobead 150P) showed the best immobilization characteristics, retaining 95% of its initial activity after 10 cycles of operation at pH 3.0 and temperature 70 degrees C. The thermodynamic parameters of thermal inactivation demonstrated the positive impact of immobilization. The immobilized enzyme exhibited enhanced stability in alkaline conditions and the ability to provide hydrophobic properties to wood.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Soumaya Rezgui, Aida M. Diez, Lotfi Monser, Nafaa Adhoum, Marta Pazos, M. Angeles Sanroman
Summary: Heterogeneous photo-electro-Fenton process is an effective technology for the removal of recalcitrant pollutants. By optimizing the catalyst design and performance, efficient degradation and mineralization treatment can be achieved.
Article
Electrochemistry
Aida M. Diez, Xiang Lyu, Marta Pazos, M. Angeles Sanroman, Geoff McCool, Oleg I. Lebedev, Yury Kolen'ko, Alexey Serov
Summary: This work introduces a convenient phosphorization protocol to convert commercial bimetallic Ni-Mo and Ni-Re electrocatalysts into their respective phosphides, enabling them to be stable under acidic conditions and suitable for water reduction in acidic electrolyte.
ELECTROCHIMICA ACTA
(2023)
Article
Environmental Sciences
Aida M. Diez, Marta Pazos, M. Angeles Sanroman, Helen Valencia Naranjo, Joachim Mayer, Yury Kolen'ko
Summary: This study successfully synthesized and characterized fluoride-doped-TiO2 and demonstrated its applicability in solid-phase photodegradation of polyethylene films for the first time. After three weeks of UV A radiation using a low consumption LED lamp, the polyethylene films containing only 2% of the photocatalyst experienced nearly 50% weight loss, surpassing previously reported data. The results suggest the potential for future production of self-photodegradable plastics for environmental and wastewater treatment applications.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Antia Fdez-Sanroman, Barbara Lomba-Fernandez, Marta Pazos, Emilio Rosales, Angeles Sanroman
Summary: Three CuFe-MOFs with different structures were synthesized successfully by varying the ratio of solvents, salts, or temperature. CuFe(BDC-NH2)(D) and CuFe(BDC-NH2)(S) exhibited improved PMS activation for Rhodamine B removal, achieving a removal rate of around 92%. The best degradation system for a mixture of antibiotic and anti-inflammatory drugs was the photo-assisted activation of PMS using CuFe(BDC-NH2)(D) and CuFe(BDC-NH2)(S), resulting in complete degradation within 1 hour. CuFe(BDC-NH2)(R)/PMS showed higher antibacterial activity due to its higher copper content.
Article
Chemistry, Physical
Anton Puga, Emilio Rosales, Marta Pazos, Maria Angeles Sanroman
Summary: The synthesis of an iron catalyst (Fe-DES) was proposed in this work, which was characterized physically and chemically. The Fe-DES was shown to be a multipurpose catalyst that can be applied in various processes for the removal of pharmaceuticals in wastewater.
Article
Biotechnology & Applied Microbiology
Esin Balci, Emilio Rosales, Marta Pazos, Aysun Sofuoglu, Maria Angeles Sanroman
Summary: This study investigated the degradation of dibutyl phthalate (DBP) using esterase and lipase enzymes from different microorganisms, and examined the feasibility of immobilizing the most effective enzyme on a clayey material. The results showed that esterase from Bacillus subtilis had the highest degradation efficiency and immoblization improved thermal and storage stability. Additionally, the immobilized enzyme composite maintained high catalytic activity after 7 continuous cycles.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Review
Food Science & Technology
Silvia Escudero-Curiel, Alba Giraldez, Marta Pazos, Angeles Sanroman
Summary: Agri-food residues and by-products are recognized as valuable products that can be used in other industries, such as environmental remediation. These materials, transformed into biochar and hydrochar through engineering techniques, have substantial potential as versatile adsorbents in wastewater treatment and promising alternatives in various environmental and energy-related applications. This sustainable approach provides cost-effective and satisfactory solutions, addressing environmental concerns and paving the way for a more eco-friendly and resource-efficient future.
Article
Biotechnology & Applied Microbiology
Imane Akkari, Zahra Graba, Marta Pazos, Nacer Bezzi, Fatiha Atmani, Amar Manseri, Mohamed Mehdi Kaci
Summary: Due to the rapid growth of bio-waste, there are various difficulties in disposal and governance. Therefore, recycling and repurposing bio-waste for environmental purposes have gained more attention. In this study, a novel activated hydrochar (AHPP) was synthesized from pomegranate peels using hydrothermal carbonization (HTC) followed by phosphoric acid activation. The characteristics of AHPP were determined using various techniques, and its potential for adsorbing Basic Red 46 (BR46) dye was assessed. The results showed that AHPP can effectively adsorb BR46, and it could be reused multiple times.
BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Alba Giraldez, Antia Fdez-Sanroman, Daniel Terron, M. Angeles Sanroman, Marta Pazos
Summary: In recent years, the issue of pathogens in the environment has gained widespread concern. New research has been conducted on removing pathogens and persistent pollutants from water. The study evaluated the effectiveness of the nanostructure copper-organic framework, HKUST-1, as a catalyst for eliminating Escherichia coli and generating sulphate radicals through peroxymonosulphate (PMS) activation. The disinfection process was optimized and achieved complete elimination of Escherichia coli growth after 30 minutes using a concentration of 60.5 mg/L HKUST-1 and 0.1 mM PMS. A novel development involving encapsulating HKUST-1 on polyacrylonitrile was proposed to overcome operational limitations and enable continuous treatment in a flow disinfection process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Aida M. Diez, Marta Pazos, M. Angeles Sanroman, Yury Kolen'ko
Summary: This study carried out the synthesis and characterization of novel graphene oxide coupled to TiO2 (GO-TiO2) to understand its performance as a photocatalyst, comparing it with well-known TiO2 (P25) from Degussa. The physical-chemical characterization showed that GO-TiO2 has high porosity, suitable charge, and high electron mobility, which enhance the degradation of pollutants. The study also highlighted the importance of the reactor set up on the reaction efficiency.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.