Article
Materials Science, Multidisciplinary
Lei Li, Patrick Van Rijn
Summary: In this study, surface modifiers and intercalation modifiers were used to modify layered double hydroxides (LDHs) in order to improve their dispersion and compatibility in the polylactic acid (PLA) matrix. PLA/LDHs nanocomposites were prepared using a sonication-assisted solution compounding method. The results show that the addition of LDHs modified through different methods and concentrations not only affects the thermal properties and crystallinity of the PLA/LDHs composites, but also improves the tensile strength and elongation at break of PLA.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Zhi-Yuan Zhang, Chun-Yun Deng, Chen-Chen Shen, Rong-Yao Xu, Xi-Zhen Wang, Yan-Hao Wang, Bo Ding, Bin Li, Jian Li, Chunju Li
Summary: A phosphorescence enhancement of pyridinium macrocycle/monomer phosphors is achieved by doping into a poly(vinylalcohol) (PVA) matrix, resulting in up to a 14.7-fold prolongation of phosphorescence lifetimes and visible afterglow. The abundant hydrogen-bonding interactions and electrostatic interactions between the phosphors and PVA suppress nonradiative decay processes, slow down the radiative and nonradiative decay of triplet states, consequently promoting long-lived RTP.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Sylwia Cukrowicz, Maciej Sitarz, Kamil Kornaus, Karolina Kaczmarska, Artur Bobrowski, Agnieszka Gubernat, Beata Grabowska
Summary: The study successfully prepared SN/PAA and SN-Na/PAA composites with the potential to be new foundry binders. The results show that poly(acrylic acid) can act as a binding agent in synthetic molding sand technology, reducing the risk of mineral materials losing their binding capacity.
Article
Environmental Sciences
Andre Baldermann, Stephan Kaufhold, Reiner Dohrmann, Claudia Baldermann, Ilse Letofsky-Papst, Martin Dietzel
Summary: Nanoscale zero-valent iron (nZVI) based composites supported by clay mineral substrates show promise for the in-situ remediation of groundwater and soils contaminated with chlorinated hydrocarbons. The nZVI-B nanocomposite, with higher reactivity and efficiency for TCE removal compared to pure nZVI, demonstrates the potential for use in permeable reactive barriers for contaminated field sites while minimizing reduction of soil-bearing capacity.
Article
Mathematics
Mahmure Avey, Nicholas Fantuzzi, Abdullah H. Sofiyev
Summary: The stability behavior of inhomogeneous nanocomposite cylindrical shells in thermal environments is investigated using the first-order shear deformation theory. Both homogeneous and heterogeneous nanocomposite materials are considered, based on carbon nanotube-reinforced polymer. The critical combined loads for different structures are determined by solving the derived partial differential equations using the Galerkin procedure, and the proposed formulation is tested for reliability against finite element and numerical methods in the literature.
Article
Engineering, Chemical
Amir Ebrahim Baradaran Mahdavi, Ebrahim Panahpour, Roozbeh Javad Kalbasi, Ali Gholami
Summary: In this study, a polyacrylamide-polystyrene/bentonite nanocomposite was synthesized through in situ polymerization and applied for the removal of manganese ions from aqueous solutions, achieving high adsorption efficiency.
DESALINATION AND WATER TREATMENT
(2021)
Article
Polymer Science
Wejdan Al-Otaibi, Naser M. M. Alandis, Manawwer Alam
Summary: This article presents the synthesis of polyesteramide (PEA) resin from Leucaena leucocephala oil (LLO) derived from L. leucocephala seeds grown in King Saud University Campus. The synthesis involved the conversion of LLO into amide diol by catalytic amidation reaction, followed by esterification with malic acid (MA) to produce LLO-based PEA (LPEA). Solvent and catalyst-free synthesis was employed. Characterization techniques confirmed the successful formation of LPEA by introducing amide and ester groups. LPEA was further enhanced with nano graphene oxide (GO) and applied as nanocomposite corrosion protective coatings (LPEA/GO), showing excellent corrosion resistance performance in 3.5 w/w% NaCl medium. Thermogravimetric analysis exhibited good thermal stability of the coatings up to 200 degrees C.
Article
Energy & Fuels
Jinliang Liu, Yaoze Cheng, Fengshan Zhou, L. M. Amutenya Evelina, Wenjun Long, Sinan Chen, Lipeng He, Xiaoling Yi, Xin Yang
Summary: The performance and characteristics of bentonite at high temperatures vary significantly, with natural bentonite showing increased viscosity and industrial modified drilling-grade bentonite exhibiting different behaviors. The new standard Q/SY 17009-2019 is more scientific and reasonable in evaluating drilling-grade bentonite, better meeting the actual needs of drilling engineering.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Zhi-lei Zeng, Chuang Yu, Rao -ping Liao, Xiaoqing Cai, Zhi-hao Chen, Zhaokai Yu, Ze-xiang Wu
Summary: This study developed a carboxylate polymer grafted montmorillonite to improve the adsorption capacity of heavy metals. The structural changes of montmorillonite before and after modification were characterized. The results showed that the modified method significantly enhanced the adsorption performance of montmorillonite for cadmium ions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Chemistry, Multidisciplinary
Ali Mahmoud, Rahul Gajbhiye, Salaheldin Elkatatny
Summary: This study reviews the application of different types of organoclays in oil-based drilling fluids (OBDFs), investigating their structures, rheological properties, and thermal stability. The study also illustrates the role of fibrous and layered organoclays in enhancing the rheological properties of OBDFs, as well as the synergistic use of different organoclays to improve thermal stability. The research highlights gaps in knowledge and provides recommendations for further investigation in this field. The application of organoclays in OBDFs has significant potential for development and contributes to progress in the oil and gas industry.
Review
Engineering, Environmental
Binbin Huang, Zhihua Xue, Xiaolong Fu, Qi-Long Yan
Summary: In the field of energetic materials, achieving a balance between energy density and safety remains a challenging task. Coating and intercalation have been found to be the best and most widely used methods, as they are both safe and cost-effective, with well-controlled procedures.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Composites
Mehdi Moghri, Mohammad Reza Kalaee, Majid Abdouss, Mojtaba Koosha
Summary: In this study, nanocomposites of polyvinyl chloride poly(epichlorohydrin-co-ethylene oxide)(ECO)/organoclay were prepared via melt processing and various parameters were adjusted to achieve the highest thermal stability. The results showed that the rotor speed and rubber content greatly influenced the intercalation and thermal stability of the nanocomposites. The hydrogen bonding between ECO and organoclay was found to be crucial for the miscibility of the components.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Chemistry, Physical
Aranee Teepakakorn Pleng, Takayuki Hayakawa, Makoto Ogawa
Summary: This study investigated the immobilization of rhodamine 6G and polyvinylpyrrolidone in purified bentonite. The successful intercalation of the dyes and polymer into the interlayer space of the bentonite was confirmed, and superior stability was observed under heating and sunlight irradiation conditions.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
E. Baigorria, S. Souza dos Santos, M. R. de Moura, L. F. Fraceto
Summary: In this study, 3D printing of bioinks was used to develop nanocomposite hybrid adsorbent hydrogels. By adding clay to the biopolymer matrix, the resulting hydrogels showed improved rheological, mechanical, thermal, and porous properties. The SA-B30 bioink and corresponding 3D-printed device were found to be the best systems for adsorption of the pesticide paraquat. The synthesized eco-friendly, biodegradable, and low-cost materials can contribute to a circular economy and ensuring safe water for human consumption.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Thermodynamics
Irena Kresic, Natasa Stipanelov Vrandecic, Matko Erceg, Zoran Grubac, Mia Galic
Summary: This study focuses on the characterization of a series of solid nanocomposite polymer electrolytes consisting of PEO, POSS, and LiBOB. The addition of LiBOB and POSS leads to a decrease in the crystallinity and melting temperatures of PEO, while the glass transition temperatures increase. The thermal stability of the polymer electrolytes was investigated, showing a more complex degradation compared to pure PEO. However, the polymer electrolytes remain thermally stable enough for their applications in electrochemical devices. The incorporation of LiBOB and POSS positively influences the ionic conductivity of PEO. The optimized system was determined based on the ionic conductivity of the nanocomposites.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Engineering, Chemical
Pinar Turan Beyli, Mehmet Dogan, Mahir Alkan, Aydin Turkyilmaz, Yasemin Turhan, Ozkan Demirbas, Hilmi Namli
DESALINATION AND WATER TREATMENT
(2016)
Article
Chemistry, Analytical
Sevtap Yigit, Mustafa Tuzen, Mustafa Soylak, Mehmet Dogan
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2016)
Article
Materials Science, Biomaterials
Mehmet Emin Diken, Serap Dogan, Yasemin Turhan, Mehmet Dogan
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2018)
Article
Materials Science, Biomaterials
Mehmet Emin Diken, Serap Dogan, Yasemin Turhan, Mehmet Dogan
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2018)
Article
Chemistry, Analytical
Zeliha Erbas, Mustafa Soylak, Erkan Yilmaz, Mehmet Dogan
MICROCHEMICAL JOURNAL
(2019)
Article
Materials Science, Multidisciplinary
Zeliha Gamze Ayanoglu, Mehmet Dogan
DIAMOND AND RELATED MATERIALS
(2020)
Article
Biotechnology & Applied Microbiology
Mehmet Emin Diken, Berna Kocer Kizilduman, Begumhan Yilmaz Kardas, Enes Emre Dogan, Mehmet Dogan, Yasemin Turhan, Serap Dogan
JOURNAL OF BIOACTIVE AND COMPATIBLE POLYMERS
(2020)
Article
Biotechnology & Applied Microbiology
Serap Dogan, Taner Ozcan, Mehmet Dogan, Yasemin Turhan
ENZYME AND MICROBIAL TECHNOLOGY
(2020)
Article
Chemistry, Physical
Mehmet Dogan, Muhsin Turan, Pinar Turan Beyli, Zeynep Bicil, Berna Kocer Kizilduman
Summary: This study aimed to improve the thermal stability of PVAc polymer by forming nanocomposites using MWCNT and functionalized MWCNT, and analyzing the thermal properties. Functionalization of p-MWCNT was done by hydroxylation, carboxylation and silylation reactions. The synthesized nanocomposites showed increased thermal stabilities and degradation temperatures, with the modified MWCNT dispersed in the PVAc matrix. The results were consistent with the Flynn-Wall-Ozawa method and showed higher activation energy for the second step.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2021)
Article
Environmental Sciences
Onur Turhan, Berna Kocer Kizilduman, Yasemin Turhan, Mehmet Dogan
Summary: A modified sepiolite for methylene blue adsorption was designed in this study and characterized using various techniques. Experimental results showed that the modified sepiolite had good adsorption capacity under certain conditions, fitting well with the Langmuir adsorption model. The study also revealed the endothermic nature of MB adsorption with changes in entropy and Gibbs energy.
FRESENIUS ENVIRONMENTAL BULLETIN
(2021)
Article
Energy & Fuels
Mehmet Dogan, Pinar Sabaz, Zeynep Bicil, Berna Kocer Kizilduman, Yasemin Turhan
JOURNAL OF THE ENERGY INSTITUTE
(2020)
Article
Environmental Sciences
Mehmet Emin Diken, Serap Dogan, Mehmet Dogan, Yasemin Turhan
FRESENIUS ENVIRONMENTAL BULLETIN
(2017)
Article
Environmental Sciences
Serap Dogan, Umran Alan, Mehmet Dogan
FRESENIUS ENVIRONMENTAL BULLETIN
(2014)
Proceedings Paper
Environmental Sciences
I. Durukan, S. Bektas, M. Dogan, U. Fittschen
PROCEEDINGS OF THE 16TH INTERNATIONAL CONFERENCE ON HEAVY METALS IN THE ENVIRONMENT
(2013)
Article
Environmental Sciences
Aydin Turkyilmaz, Mehmet Dogan, Mahir Alkan
FRESENIUS ENVIRONMENTAL BULLETIN
(2014)
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)
