Article
Chemistry, Physical
Angela Andrea Maggio, Maria Eugenia Roca Jalil, Jhonny Villarroel-Rocha, Karim Sapag, Miria Teresita Baschini
Summary: This study used pillared clays to remove ciprofloxacin from aqueous media and investigated the influence of different drying methods on the properties of the materials. The results showed that pillared clays have good adsorption performance and exhibit differences under different pH values and drying methods.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Physical
Yaneth Cardona, Sophia A. Korili, Antonio Gil
Summary: Fixed-bed column studies were conducted to analyze the applicability of synthetic alumina pillared interlayered clays (Al-PILC) as sorbents for solid-phase extraction (SPE), specifically for triclosan (TCS) adsorption. The results showed that AI-PILC was effective in TCS adsorption for SPE, and the RSM-BDD model utilizing response surface methodology with a Box-Behnken design was successful in evaluating and optimizing the adsorption conditions for emerging contaminants in a fixed-bed column system.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Sesegma Ts. Khankhasaeva, Sayana V. Badmaeva, Marina V. Ukhinova
Summary: The adsorption of diclofenac (DCF), a common pharmaceutical pollutant, on Fe2O3-pillared montmorillonites (Fe-PMts) was studied. Fe-PMts were synthesized by intercalation of natural montmorillonite with iron polyoxocations. The pillaring process significantly increased the specific surface area and sorption capacity of the clay. The pH, sorbent content, DCF concentration, and temperature were found to be the main factors affecting DCF adsorption. The kinetic data and adsorption isotherm were analyzed using various models, and the results showed that the adsorption followed pseudo-second order kinetics and Langmuir isotherm. The thermodynamic parameters indicated that the adsorption of DCF on Fe-PMt was spontaneous and exothermic. Fe-PMt was proven to be an effective and environmentally friendly sorbent for DCF removal in pharmaceutical wastewater treatment.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Sisi Jiang, Jiaqi Li, Meng Feng, Rundao Chen, Lidong Guo, Qianqian Xu, Lihang Chen, Fuxing Shen, Zhiguo Zhang, Yiwen Yang, Qilong Ren, Qiwei Yang, Zongbi Bao
Summary: This study presents a robust pillared MOF with pcu-topology, exhibiting high paraffin sorption capacity and selectivity, achieving high purity separation between paraffins and olefins.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Applied
Dina G. Boer, Jort Langerak, Benny Bakker, Paolo P. Pescarmona
Summary: A series of binderless zeolite LTA adsorbents in macroscopic bead format with hierarchical porosity were synthesized for CO2 removal from biogas. The ion-exchanged Na58K42-LTA beads exhibited the best performance, with high CO2/CH4 selectivity and substantial CO2 adsorption capacity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
C. M. Becker, M. Marder, E. Junges, O. Konrad
Summary: This paper conducts a systematic review of recent studies on desulfurization technologies, extracting information from 51 articles to identify trends, potentials, and limitations of each technique. The study reveals that experiments with lower hydrogen sulfide concentrations result in higher efficiencies, with over 80% of the articles reporting H2S removal efficiencies exceeding 80%. Promising desulfurization methods highlighted include a trickling filter system, biodesulfurization and bioscrubbing processes, a photocatalytic desulfurizer, and micro-aeration tests.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Inorganic & Nuclear
Wanqi Sun, Yujie Jin, Yilian Wu, Wushuang Lou, Yanbin Yuan, Simon Duttwyler, Lingyao Wang, Yuanbin Zhang
Summary: A novel microporous boron cluster pillared metal-organic framework BSF-10 was synthesized and showed high selectivity and capacity for the separation of acetylene from carbon dioxide and ethylene.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Review
Engineering, Chemical
Yaneth Cardona, Miguel Angel Vicente, Sophia A. Korili, Antonio Gil
Summary: This article summarizes the studies on the use of pillared interlayered clays (PILC) as adsorbents for removing organic compounds from wastewater, while also discussing the characteristics of PILC and their modified counterparts that can directly impact their adsorption behavior.
REVIEWS IN CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Uziel Ortiz-Ramos, Roberto Leyva-Ramos, Esmeralda Mendoza-Mendoza, Antonio Aragon-Pina
Summary: This study investigated the adsorption of tetracycline onto different clays and analyzed the adsorption mechanisms and influencing factors. Bentonite showed the highest adsorption capacity due to its swelling characteristic, interlayer cations, and tetracycline molecular size. Adsorption occurred on the external surface and in the interlayer space of bentonite, with both physical and chemical mechanisms involved. The adsorption process was partially reversible and endothermic.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Tiziana Missana, Ursula Alonso, Miguel Garcia-Gutierrez
Summary: This study evaluates the component additive approach for Eu adsorption on mixtures of smectite and illite. The results show that Eu sorption in 2:1 clays is an additive process, which supports the assessment of barrier materials for contaminant migration under different geochemical conditions.
Article
Chemistry, Physical
Manmanut Srikaew, Yutthana Wongnongwa, Siriporn Jungsuitiwong, Chokchai Kaiyasuan, Vinich Promarak, Sayant Saengsuwan
Summary: This study explores the impact of carboxylation of graphene oxide (GO) on the adsorption performance and selective adsorption towards methylene blue (MB) dye. The results show that carboxylated GO (GO-COOH) has higher adsorption capacity and better selective adsorption compared to GO. Carboxylation presents a promising approach to enhance the adsorption performance of GO-based adsorbents and eliminate MB dye pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Biochemistry & Molecular Biology
Juraj Bujdak
Summary: This critical review examines the literature on the adsorption of dyes on clay minerals and identifies the most serious issues. Insufficient characterization of adsorbents, the influence of impurities, and inappropriate models are highlighted as fundamental problems. The paper discusses the main processes accompanying adsorption in colloidal systems and analyzes the relationship between system stability and dye adsorption. Methodological procedures for determining and evaluating adsorption are critically reviewed. A summary of modified clay minerals and complex systems for the adsorption of organic dyes is provided. The review serves as a guide for improving characterization, determining adsorption, evaluating results, and interpreting data accurately.
Article
Engineering, Chemical
Rafael Canevesi, Carlos A. Grande
Summary: The use of bio-methane as a fuel is an important alternative to reduce greenhouse gas emissions. Zeolite 4A, as a selective material, can partially exclude or delay the adsorption of CH4, making it a viable alternative for biogas upgrading processes. Experimental results showed that the zeolite 4A achieved over 98% bio-methane purity and a recovery rate of around 90%, indicating its effectiveness in similar pressure conditions as commercial adsorbents used in industrial PSA units.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Alberto M. Tous-Granados, Juan C. Munoz-Senmache, Rodinson R. . Arrieta-Perez, Arturo J. Hernandez-Maldonado
Summary: A bimetallic Be/Cu coordination polymer with high stability and strong CO2 adsorption capacity was synthesized for the first time. It showed reversible changes in structure upon the presence of a guest species or temperature and exhibited higher selectivity for CO2/N2 separation compared to monometallic polymers.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Sanjay Jatav, Marcel Herber, Hongxiao Xiang, Eric H. Hill
Summary: The continuous release of anthropogenic toxins into the environment has become a global threat to water security. In this study, a modified claylike layered material called CoAl layered double hydroxide was used as a template to synthesize Bi2MoO6 nanohybrids, which exhibited significantly enhanced adsorption capacity and broadband visible light absorption compared to the modified CoAl layered double hydroxide. These nanohybrids hold great promise for water decontamination and photocatalytic antifouling membranes, and the synthetic strategy can be applied to other ionic layered materials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Medicinal
Rosana Pinto, Silvia Carvalho, Fernando Antunes, Joao Pires, Moises L. Pinto
Summary: This review discusses the importance of nitric oxide and hydrogen sulfide in wound healing applications, as well as the challenges in designing effective delivery systems. It introduces different types of new releasing carriers to facilitate the application of these molecules in clinical practice.
Article
Chemistry, Physical
Mary Batista, Moises L. Pinto, Renato Carvalho, Joao Pires
Summary: The research demonstrated that glycerin-activated carbons prepared via chemical activation exhibit high selectivity in adsorption-separation of ethane and ethylene, showing a higher adsorption capacity for ethane. This serves as a successful example of utilizing glycerin, a low-cost by-product, to produce promising adsorbents for gas separation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Abeer Al Mohtar, Moises L. Pinto
Summary: This study investigates the effect of moisture on the CO2 capture mechanism using an amine-functionalized silica support through density functional theory. The presence of water reduces the activation energy of the capture reaction and promotes product stability.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Rosana V. Pinto, Silvia Carvalho, Fernando Antunes, Joao Pires, Moises L. Pinto
Summary: A polymeric film with a nanoporous carrier was developed to deliver nitric oxide (NO) or hydrogen sulfide (H2S) for wound healing. The film achieved sustained gas release in biological media due to the polymer barrier. Gas-loaded films showed different biological actions, with NO being non-toxic and H2S approaching toxic levels at lower concentrations. The films also demonstrated potential antibacterial efficacy against E. coli.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Maria Ines Severino, Abeer Al Mohtar, Carla Vieira Soares, Catia Freitas, Nicolas Sadovnik, Shyamapada Nandi, Georges Mouchaham, Vanessa Pimenta, Farid Nouar, Marco Daturi, Guillaume Maurin, Moises L. Pinto, Christian Serre
Summary: Metal-Organic Frameworks (MOFs) with open metal sites (OMS) can strongly interact with polar gases/vapors. However, their selective adsorption is usually hindered by a high affinity to water under ambient conditions. This study challenges the paradigm by demonstrating that metal(III) polycarboxylates MOFs, such as MIL-100(Fe), with a high concentration of OMS, enable the selective capture of polar VOCs even in the presence of water. The adsorption mechanism involves a direct coordination of the VOC on the OMS, which has a stronger interaction energy compared to water.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Silvia Carvalho, Rosana V. Pinto, Joao Pires, Joao Rocha, Fernando Antunes, Moises L. Pinto
Summary: Four PEG composites were synthesized and characterized for their adsorption and release performance of hydrogen sulfide (H2S) and nitric oxide (NO). Cytotoxicity studies showed that the PEG composites had no toxicity to human cells.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Maria Ines Severino, Abeer Al Mohtar, Carla Vieira Soares, Oleksii Kolmykov, Catia Freitas, Iurii Dovgaliuk, Charlotte Martineau, Vanessa Pimenta, Farid Nouar, Guillaume Maurin, Moises L. Pinto, Christian Serre
Summary: Effective capture of polar volatile organic compounds under environmental conditions is a challenge that can be overcome by introducing perfluorinated groups into a flexible microporous MOF. The perfluorinated flexible MIL-53(Al) with one CF3 group exhibits outstanding affinity for acetic acid even in the presence of water, making it an optimum sorbent for indoor air quality management under real working conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Multidisciplinary Sciences
Marta Bordonhos, Tiago L. P. Galvao, Jose R. B. Gomes, Jose D. Gouveia, Miguel Jorge, Mirtha A. O. Lourenco, Jose M. Pereira, German Perez-Sanchez, Moises L. Pinto, Carlos M. Silva, Joao Tedim, Bruno Zezere
Summary: This article presents an overview of a collaborative research effort on computational approaches to understand materials and tools at different length and time scales. It introduces various techniques and models used in the study, as well as recent computational case studies focusing on material synthesis, interpretation of experimental results, prediction of material properties, and material selection for specific applications.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Chemistry, Multidisciplinary
Beatriz Matos, Mary Batista, Joao Pires
Summary: In the face of global warming and the energy crisis, it is crucial to reduce the emissions of greenhouse gases like CO2 and CH4 and recycle biomethane from landfill biogas. This study demonstrates the potential of converting glycerol, a by-product of biodiesel production, into activated carbon using potassium acetate as an activating agent. The activated carbon exhibits high adsorption capacities for CO2 and CH4, with selectivity values that enable effective separation. Additionally, the study finds that the CO2 emissions produced during activated carbon synthesis can be easily neutralized through their use in small biogas production units.
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Mary Batista, Renato Carvalho, Moises L. Pinto, Joao Pires
Summary: Glycerin and dopamine were used as precursors to prepare microporous activated carbon adsorbent materials for the separation of ethane/ethylene and natural gas or landfill gas components. The activated carbons were produced through carbonization and chemical activation, with the introduction of nitrogenated groups to improve selectivity. Methane had the lowest adsorption capacity on the most effective material, followed by carbon dioxide, ethylene, and ethane.
Article
Chemistry, Physical
Silvia Carvalho, Joao Pires, Cristina Moiteiro, Moises L. Pinto
Summary: A new imine-linked polymer organic framework with microporosity and temperature stability has been synthesized using inexpensive reagents. The material has a higher capacity to adsorb NO compared to H2S. This study explores the potential use of the framework in the therapeutic release of NO or H2S.
Article
Energy & Fuels
Agata Mlonka-Medrala, Tarikul Hasan, Wojciech Kalawa, Marcin Sowa, Karol Sztekler, Moises Luzia Pinto, Lukasz Mika
Summary: Adsorption chillers use heat instead of electricity to produce cold energy, reducing electrical energy consumption. In this study, different types of zeolites were synthesized from fly ash and tested as adsorbents in adsorption chillers. Results indicate that only 13X zeolite has the potential for application in sorption chillers.