Review
Chemistry, Multidisciplinary
Ethan Dern Huang Kong, Jenny Hui Foong Chau, Chin Wei Lai, Cheng Seong Khe, Gaurav Sharma, Amit Kumar, Suchart Siengchin, Mavinkere Rangappa Sanjay
Summary: Water pollution is a global issue that conventional methods struggle to solve, but photocatalysis, especially with GO/TiO2 composites, shows promising results in wastewater treatment.
Review
Environmental Sciences
Durgadevi Selvaraj, Navamani Kartic Dhayabaran, Arivazhagan Mahizhnan
Summary: Algae-based treatment of textile wastewater is an eco-friendly and cost-effective method that efficiently removes pollutants and produces bioenergy and high-value products.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Chemical
Shuangli Li, Shiqi Li, Nuan Wen, Dong Wei, Yongfang Zhang
Summary: The bifunctionalized magnetic mesoporous silica material, NZVI-SH-HMS, successfully synthesized with thiol and nanometer zero-valent iron was effective in removing lead and cadmium ions from aqueous solution. The material demonstrated good porous properties, high adsorption capacity, and excellent adsorption performance in different simulated wastewater, indicating promising capabilities for heavy metal ion removal in actual water environments.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Neelma Munir, Rabia Tariq, Zainul Abideen, Maria Hasnain, Muhammad Iftikhar Hussain, Rukhama Haq
Summary: This study proposes the utilization of halophytic plants, such as Chenopodium album, for synthesizing zinc oxide nanoparticles (ZnO NPs) and treating textile industry wastewater. The results show that the green synthesis of halophytic nanoparticles presents maximum removal capacity after 15 days exposure to 1 mg of ZnO NPs. Therefore, the prepared ZnO NPs from halophytes can be a viable solution for treating textile industry effluents before they are discharged into water bodies for sustainable environmental growth and environmental safety.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Biotechnology & Applied Microbiology
Norshila Abu Bakar, Norzila Othman, Zalilah Murni Yunus, Wahid Ali Hamood Altowayti, Muhammad Tahir, Nurina Fitriani, Siti Nor Aishah Mohd-Salleh
Summary: Textile industry effluents containing high concentrations of heavy metals are harmful to humans, plants, and animals. Adsorption technology, particularly using activated carbon from agricultural waste such as banana peel, is an effective and eco-friendly method for heavy metal removal in textile wastewater treatment. Different heavy metals show varying affinity towards adsorbents, with Ni2+ and Cd2+ having lower affinity, requiring adsorbents with high porosity and surface area for their removal.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Renu, Madhu Agarwal, Kailash Singh
Summary: In this study, wheat bran was used as an adsorbent to simultaneously remove heavy metals. The presence of dye was found to reduce the removal of each metal, but had no significant effect on dye adsorption. The optimal pH, temperature, and adsorbent dose were determined. Continuous study showed that the presence of dye decreased the effectiveness of the adsorption process.
WATER SCIENCE AND TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Sasireka Velusamy, Anurag Roy, Senthilarasu Sundaram, Tapas Kumar Mallick
Summary: Textile wastewater heavy metal pollution has become a severe global environmental issue, with significant impacts on natural water resources and human health. Graphene oxide as an adsorbent exhibits advantages in efficient removal of heavy metal ions, playing a crucial role in the remediation of textile wastewater.
Article
Environmental Sciences
Huining Zhang, Xingmao Liu, Lihong Tian, Yuling Tang, Zhongyu Shi, Yankui Xiao, Zhiguo Wu, Ying Zhu, Qi Guo, Zhangpu Peng
Summary: In this study, polyvinyl alcohol/functionalized graphene oxide macroporous composite spheres (PVA/GO-SH) were successfully prepared to address the separation, mechanical strength, and secondary pollution issues associated with functionalized graphene oxide. The experiments showed that PVA/GO-SH exhibited high removal rates and equilibrium adsorption capacities for Cu2+ and Pb2+. The composite spheres also maintained excellent spherical shape and stability.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Chemistry, Multidisciplinary
Shazia Perveen, Raziya Nadeem, Farhat Nosheen, Muhammad Imran Asjad, Jan Awrejcewicz, Tauseef Anwar
Summary: In this study, biochar-mediated zirconium ferrite nanocomposites were successfully developed for the removal of dyes from textile wastewater. The nanocomposites exhibited high adsorption efficiency and showed potential for practical engineering applications.
Article
Environmental Sciences
Camilla Galletti, Melodj Dosa, Nunzio Russo, Debora Fino
Summary: Many industries discharge wastewater containing heavy metals, which must be treated to remove the pollutants. Activated carbon adsorption is commonly used but is expensive, leading to research on low-cost alternatives like zeolites. Among them, clinoptilolite shows high selectivity for heavy metal ions, especially cadmium.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Selvaraj Selvakumar, Kovilpillai Boomiraj, Sivakumar Durairaj, Kumar Veluswamy
Summary: This study compares the effectiveness of biochar systems and conventional subsurface flow systems in treating textile wastewater. The results showed that the biochar system was more efficient in removing heavy metals, reducing total dissolved solids, and neutralizing the alkalinity of the wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Nayara Balaba, Dienifer F. L. Horsth, Jamille de S. Correa, Julia de O. Primo, Silvia Jaerger, Helton J. Alves, Carla Bittencourt, Fauze J. Anaissi
Summary: Three synthesis routes using different natural polysaccharides as fuels and complexing agents were described for obtaining MgO. XRD identified the formation of a monophasic periclase structure for the three samples. BET analysis showed a significant difference in textural properties, with the highest pore volume and surface area obtained for MgO-St. The synthesized magnesium oxides displayed the ability to reduce the amount of Cu2+ ions in wastewater.
Review
Microbiology
Ncumisa Mpongwana, Sudesh Rathilal, Emmanuel K. Tetteh
Summary: Biological nutrient removal is essential in wastewater treatment plants, but it can be inhibited by external toxicants like heavy metals. This paper explores different recovery strategies, comparing their effectiveness and environmental impact. The application of bio-accelerant is found to be the most superior method, followed by the use of external field energy. Understanding the mechanism of inhibition and the key microorganism involved is crucial for developing effective recovery strategies.
Article
Engineering, Environmental
Chris Agida Uko, Jimoh Oladejo Tijani, Saka Ambali Abdulkareem, Saheed Mustapha, Titus Chinedu Egbosiuba, Edison Muzenda
Summary: The MgO/WO3 nanocomposites were prepared and used as nanoadsorbents for the removal of heavy metals from dyeing wastewater. The nanomaterials exhibited a distinct spherical shape and strong interaction between nanoparticles. The MgO/WO3 nanoadsorbent with a mixing ratio of 4:1 showed higher adsorption efficiency and excellent regeneration potentials. The adsorption mechanism involved electrostatic attraction, ion exchange, and pore diffusion. The thermodynamic study confirmed the endothermic and spontaneous nature of the adsorption process.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Studies
Ahmed Eteba, M. Bassyouni, Mamdouh Saleh
Summary: Complex dyes have a negative impact on the environment and are difficult to remove using traditional methods. A series of experiments was conducted to determine the optimal parameters for the removal of direct blue 78 dye using chemically treated coal fly ash (TCFA). A pilot plant was designed and implemented to investigate the ability of TCFA to remove pollutants from textile wastewater. Various physical and chemical analyses were conducted on the fly ash. The results showed that chemical treatment significantly improved the properties of the fly ash. Batch adsorption experiments demonstrated that TCFA was effective in removing dyes under optimal conditions.
ENERGY & ENVIRONMENT
(2022)
Article
Environmental Sciences
Magdalena Konczak, Paulina Godlewska, Malgorzata Wisniewska, Patryk Oleszczuk
Summary: This study examines the effects of biochar derived from sewage sludge (BCSSL) or sewage sludge/biomass (BCSSLW) on the persistence and bioavailability of polycyclic aromatic hydrocarbons (PAHs) in soils with different properties. The results show that the content of organic solvent extractable PAHs decreases when biochar is applied to the soils, depending on pH and feedstock. Similarly, the content of freely dissolved PAHs also decreases. The bioavailability and persistence of PAHs in the biochar-amended soils are closely related to the chemical properties of the soils, as indicated by the significant relationships between PAH content and pH, cation exchange capacity, available nutrients, and dissolved organic carbon.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Mariia Galaburda, Alicja Bosacka, Dariusz Sternik, Olena Oranska, Mykola Borysenko, Volodymyr Gun'ko, Anna Derylo-Marczewska
Summary: Magnetosensitive biochars were prepared by mechanochemical ball-milling of lignin and blast furnace dust, followed by pyrolysis. The materials were characterized using various techniques, and the adsorption studies showed their potential in water remediation.
Article
Chemistry, Physical
Yu. V. Yavorskyi, A. B. Hrubiak, Ya. V. Zaulychnyy, M. V. Karpets, V. V. Moklyak, V. M. Gun'ko, O. I. Dudka
Summary: This study investigates the relationship between the electrochemical properties and grinding duration of mixed nanosilica and nanoalumina powders. It explores the impact of structural and morphological changes on the electrochemical characteristics of the nanocomposite powder. The study utilizes techniques such as scanning electron spectroscopy, X-ray diffraction analysis, and ultra-soft X-ray emission spectroscopy to analyze the structural and morphological characteristics.
APPLIED SURFACE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Monika Wawrzkiewicz, Anna Kucharczyk
Summary: Direct dyes are widely used for coloring various materials, but some of them, especially azo type dyes and their biotransformation products, exhibit toxicity, carcinogenicity, and mutagenicity in aquatic environment, thus their careful removal from industrial effluents is necessary. In this study, anion exchange resin Amberlyst A21 was proposed for the adsorptive retention of three direct dyes from effluents. The adsorption capacity of DO26 and DO23 was found to be 285.6 mg/g and 271.1 mg/g, respectively, according to the Langmuir isotherm model. The Freundlich isotherm model was better for describing the uptake of DB22, with an isotherm constant of 0.609 mg(1-1/n) L-1/n/g. The pseudo-second-order kinetic model was more suitable for describing the experimental data. The presence of anionic and non-ionic surfactants decreased dye adsorption, while Na2SO4 and Na2CO3 enhanced dye uptake. Regeneration of the A21 resin was challenging, but a slight increase in efficiency was observed using 1M HCl, 1 M NaOH, and 1 M NaCl solutions in 50% v/v methanol.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Victoria Paientko, Olena I. Oranska, Volodymyr M. Gun'ko, Ewa Skwarek
Summary: To improve the properties of rose clay composites, mechanical treatment was used to prepare nanostructured composites with natural and synthetic nanomaterials. Various characterization methods were employed to analyze the materials. The composites showed enhanced release of bioactive substances and demonstrated potential for cosmetic applications.
Article
Biochemistry & Molecular Biology
Agata Wawrzyniak, Malgorzata Wisniewska, Piotr Nowicki
Summary: Water resources are being degraded by waste discharge from urban, industrial, and agricultural areas. This study investigates the use of carbonaceous adsorbents derived from pistachio nut shells to effectively treat drinking water and sewage by adsorbing organic and inorganic pollutants. The activation method and properties of the carbonaceous materials are examined, and their efficiency in adsorbing iodine, methylene blue, and poly(acrylic acid) from aqueous solutions is evaluated. The results show that the sample prepared through chemical activation is more effective in adsorbing all tested pollutants, with maximum sorption capacities of 1059 mg/g for iodine, 183.1 mg/g for methylene blue, and 207.9 mg/g for poly(acrylic acid).
Article
Polymer Science
Slawomir Frynas, Monika Wawrzkiewicz
Summary: A novel phosphorus-containing sorbent (CyP(Ph)4-DVB) was prepared by copolymerizing divinylbenzene (DVB) with bis alpha, beta-unsaturated phosphorylated cyclohexene (CyP(Ph)4). Thermogravimetric analysis (TGA) showed improved thermal stability of CyP(Ph)4-DVB compared to poly(DVB). Batch adsorption tests revealed that Freundlich isotherm model provided a better fit for the equilibrium sorption data of C.I. Basic Yellow 2 (BY2) and C.I. Basic Blue 3 (BB3) on CyP(Ph)4-DVB.
Article
Chemistry, Physical
Monika Wawrzkiewicz, Beata Podkoscielna, Przemyslaw Podkoscielny, Jadranka Blazhevska Gilev
Summary: This study synthesized polymeric adsorbents using suspension polymerization with methyl methacrylate and different crosslinking monomers. The adsorbents showed high capacity for adsorbing basic dyes and phenol, and the sorption kinetics could be predicted using the pseudo-second order kinetic model and intraparticle diffusion model.
Article
Chemistry, Multidisciplinary
Mirtemir Kurbanov, Lyudmyla Andriyko, Jamshid Panjiev, Sardor Tulaganov, Volodymyr Gun'ko, Andrii Marynin, Stanislaw Pikus
Summary: A new pilot plant equipment has been developed that utilizes the physical effects of sublimation and desublimation for processing silicon-containing raw materials. By using this equipment, amorphous silicon dioxide and iron oxide can be separated from metallurgical waste, resulting in a collective concentrate of valuable components.
JOURNAL OF NANOPARTICLE RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Malgorzata Wisniewska, Amanda Sadlowska, Karolina Herda, Teresa Urban, Piotr Nowicki
Summary: The objective of this study was to assess the usability of low-quality brown coal ash and used gear oil for the production of mineral-carbon adsorbents. The adsorbents were characterized and their suitability for drinking water purification was tested. The results showed that the efficiency of organic dye removal primarily depended on the adsorbent and adsorbate used.
Article
Biochemistry & Molecular Biology
Monika Wawrzkiewicz, Slawomir Frynas, Beata Podkoscielna
Summary: A new phosphorus-containing sorbent was synthesized and characterized for the removal of cationic dyes. The adsorption process followed Freundlich and pseudo-second-order models. The presence of Na2SO4 and cationic surfactant in the solution hindered dye adsorption, and regeneration of the adsorbent with acidic solutions and methanol showed limited efficiency.
Article
Environmental Sciences
Khizar Hussain Shah, Noor S. Shah, Gul Afshan Khan, Sadaf Sarfraz, Jibran Iqbal, Aneeqa Batool, Ahmad Jwuiyad, Shabnam Shahida, Changseok Han, Monika Wawrzkiewicz
Summary: This study investigates and compares the influence of surface functional groups and chemical matrices of macroporous resin on the exchange mechanism of Cr(III) ions. The results show that sulfonic resin has faster kinetics and higher equilibrium exchange capacity for Cr(III) ions compared to carboxylic resin. Adsorption isotherms indicate that carboxylic resin has higher affinity for Cr(III) removal at low metal ion concentrations. The findings provide valuable insights for the selection of macroporous resins as adsorbents in water filtration systems.
Review
Chemistry, Physical
Marlena Geca, Ahmed M. Khalil, Mengqi Tang, Arvind K. Bhakta, Youssef Snoussi, Piotr Nowicki, Malgorzata Wisniewska, Mohamed M. Chehimi
Summary: In recent years, biochar has gained recognition as a valuable biosourced material for tackling global challenges in various fields. This review focuses on the surface treatment of biochar using silane and other coupling agents, and summarizes the recent progress in this area. The correlation between the nature and extent of functionalization and the end applications of surface-engineered biochar is also discussed.
Article
Environmental Sciences
Kacper Latusek, Teresa Urban, Justyna Ulatowska, Izabela Polowczyk, Piotr Nowicki, Malgorzata Wisniewska
Summary: The aim of this research was to investigate the adsorption-desorption, surface, electrokinetic, and stability properties of iron-containing minerals in the presence of anionic polyacrylamide (AN PAM) and lead(II) ions. Three minerals, akaganeite, goethite, and magnetite, were synthesized using precipitation method. The interaction mechanism of heavy metal ions with polymer flocculant on soil mineral particles was proposed. The results showed that akaganeite had the highest affinity for AN PAM and/or Pb(II), adsorbing both from single and mixed solutions. Polymer-metal complexes formed in the mixed adsorbate systems were stable, reducing the desorption and bioavailability of toxic lead ions in the soil environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Magdalena Medykowska, Malgorzata Wisniewska, Stanislaw Chibowski
Summary: The main purpose of this study was to investigate the mechanisms of protein adsorption on porous materials and the effects of common environmental contaminants. The results showed that Na-X zeolite was an effective adsorbent for protein removal, with the highest adsorption at pH values close to the protein's isoelectric point.
Article
Chemistry, Applied
Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang
Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma
Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Review
Chemistry, Applied
Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang
Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He
Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Lucie Havelkova, Bogdana Bashta, Michaela Vankova, Jiri Zednik, Jiri Brus, Jan Svoboda, Alice Vagenknechtova, Jan Sedlacek
Summary: An atom-economic one-step chain-growth coordination homopolymerization providing high yields of functionalized hyper-cross-linked polyacetylenes with a permanent micro/mesoporous texture and a BET area of up to 1062 m2/g is reported. The homopolymerization is highly compatible with the heteroatom groups of the monomers and allows the preparation of well-defined porous networks with a wide spectrum of univalent groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng
Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Pingping Li, Lei Han, Donghun Kim, Kemal Celebi
Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang
Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi
Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi
Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Nataliia Reinders, Martin Durovic, Pavla Honcova, Zaneta Dohnalova, Jana Luxova, Stanislav Slang, Jhonatan Rodriguez-Pereira, Petra S. Sulcova
Summary: This study presents a new method for preparing a microporous Ni2P/C catalyst with high catalytic activity. The redox reaction and carbon matrix formation during high-temperature treatment contribute to the stability and activity of the catalyst. Experimental and analytical results suggest that the microporous structure of the composite plays a crucial role in its catalytic performance. These findings are important for practical applications of efficient hydrogen production by water electrolysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Ana Raquel Bertao, Viktoriya Ivasiv, Cristina Almeida-Aguiar, Patricia R. Correia, Antonio M. Fonseca, Manuel Banobre-Lopez, Fatima Baltazar, Isabel C. Neves
Summary: This study developed a zeolite-based delivery system (ZDS) using silver and 5-Fluorouracil as antimicrobial and antineoplastic agents. The ZDS was characterized and its antimicrobial properties were investigated, showing better antibacterial effectiveness for the ZDS containing both silver and 5-FU.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Naonobu Katada, Nobuki Ozawa, Etsushi Tsuji, Keigo Kanehara, Akiho Otsuka, Taiga Sakamoto, Kirari Umezawa, Hitoshi Matsubara, Satoshi Suganuma, Momoji Kubo
Summary: First principles calculations were used to investigate the pathway for methylation of benzene with methane catalyzed by MFI type zeolite-supported Co species. The strong adsorption of benzene on Co is found to lower the activation energy for methane dissociation and promote the formation of toluene precursor. The activation energy of methane dissociation is also affected by the Al-Al distance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Yuan Liu, An T. Ta, Kyoung Chul Park, Shenyang Hu, Natalia B. Shustova, Simon R. Phillpot
Summary: We use density functional theory to investigate the interactions of cerium, americium, and curium cations with crown ethers. Our results demonstrate that crown ethers can capture cerium, americium, and curium ions, and modifying the crown ether structure by substituting nitrogen atoms for oxygen atoms significantly increases their binding energies with radionuclides.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Zhengwu Peng, Shixing Wang, Yihui Wu, Xiang Liu, Hongliang Liu, Dekun Zhang, Likang Fu
Summary: An efficient adsorbent for recovery of germanium was prepared and characterized in this study. The adsorption behavior of Ge(IV) on the adsorbent was analyzed, and the results showed that it follows pseudo-secondary kinetic model and Langmuir isotherm model. The adsorbent exhibited good anionic anti-interference ability and can still maintain high adsorption efficiency after repeated adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
