Article
Chemistry, Physical
Hao Zeng, Laura Gonzalez-Blanco, Enrique Romero, Alessandro Fraccica
Summary: Granular bentonite is a promising material for engineered barriers, but there is limited research on its microstructure and hydro-mechanical behavior. This study investigated the performance of compacted bentonite samples and found that the microstructure played a critical role in its hydro-mechanical behavior.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Menghan Yu, Haiyan Wu, Yuhang Meng, Menghan Qu, Huaming Yang
Summary: The study synthesized an effective antimicrobial composite that impairs bacterial membrane and leaks nucleic acid through the generation of reactive oxygen species. The material is safe for human application and maintains a lasting antimicrobial effect.
APPLIED CLAY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Rodrigo Fabiano Silva Santos, Davis Carvalho de Oliveira, Bhrenno Marangoanha, Marco Antonio Galarza, Marcelo Reis Santos
Summary: The Manda Saia granite is an intrusive rock found in the southeastern part of the Amazonian craton, specifically in the Caraj'as province. It consists of two semicircular stocks composed of red-colored granite rocks with high iron and aluminum content, as well as enrichment in rare earth elements. These plutons were formed under moderately reduced to moderately oxidized conditions and show similarities with other suites in the region. The zircon U-Pb crystallization age indicates that the Manda Saia granite was derived from partial melting of the Mesoarchean crust, estimated to have formed around 1866±10 Ma.
Article
Geochemistry & Geophysics
Hugo Carrasco, Richard Spikings, Massimo Chiaradia, Alexey Ulianov, Paul Buenano, Andres Zambrano, Cristian Vallejo, Bernardo Beate
Summary: Tectonic models of the Early Cretaceous Andean margin in Ecuador are limited by the lack of accurate ages of igneous rocks. This study investigates the tectonic origin and crystallization age of the Alao Arc's volcanic rocks using geochemistry, isotopic tracing, and 40Ar/39Ar geochronology. The results show that the Alao Arc consists of two distinct assemblages formed in a continental arc above thinned continental crust and an intra-arc rift. Although the volcanic rocks lack suitable minerals for geochronology, the 40Ar/39Ar analysis suggests that the Alao Arc formed during -140-110 Ma.
Article
Chemistry, Physical
Zolfaghar Rezvani, Leila Jafari Foruzin, Kamellia Nejati, Hongxing Dai
Summary: In this work, nest-like nickel iron-layered double hydroxide (NiFe-LDH) nanomaterials were successfully prepared using the ethylene glycol-assisted hydrothermal strategy. It was found that the NiFe-LDH nanomaterials exhibited excellent oxygen evolution reaction (OER) activity in neutral media, which was attributed to their modified morphology, good crystallinity, and high surface area.
APPLIED CLAY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Claudio Ventura Bordenca, Barbara Faccini, Antonio Caracausi, Massimo Coltorti, Andrea Di Muro, Theodoros Ntaflos, Raphael Pik, Andrea Luca Rizzo, Marco Liuzzo, Alessandro Aiuppa
Summary: Petrology and fluid inclusions geochemistry were used to study the lithospheric mantle in the western Indian Ocean. The results showed different degrees of melting and metasomatic processes in the sampled lithospheric portion. The isotopic analyses support a lithospheric origin of the Comoros magmas and argue against any deep mantle plume-related contribution.
Article
Chemistry, Physical
M. F. Acosta, M. Morales, G. Marcelo, S. Lopez-Esteban, A. Esteban-Cubillo, P. M. Rodriguez-Pascual, C. Pecharroman
Summary: In this study, powder samples of monodisperse anatase nanoparticles were synthesized in-situ from sepiolite microparticles doped with TiIV. The sepiolite clay acted as a chemical reactor and a solid substrate for the particles, preventing their growth during heating. The high thermal stability of these metastable anatase particles was demonstrated, with a transformation temperature 200 degrees C above that of ordinary powder particles. The electron bandstructure and photon absorption and recombination properties were also investigated, providing insights into the potential use of these materials as self-cleaning agents for solid materials.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Huixing Dai, Huan Gao, Pan Yang, Jinzong Mo, Haomin Zhang, Shengjun Lei, Ling Wang
Summary: This paper presents a novel kaolinite-based porous geopolymer composite thermal insulation material with superior comprehensive properties. The effects of rock wool fiber contents and heat treatment on the properties of the material were investigated. The results show that the addition of rock wool fiber enhances the mechanical properties and heat treatment improves the thermal insulation performance. This material has a simple manufacturing process, eco-friendly properties, and exhibits lightweight construction, high strength, and low thermal conductivity, making it highly suitable for building energy conservation.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Yakui Li, Dongshuang Hou, Xiaoyu Ding, Xingjian Kang, Qinfu Liu
Summary: This study investigates the influence of raw mineral on the preparation of intercalation compounds and kaolinite nanotubes by selecting different types of coal-measure kaolinite. The results show that the intercalation effects vary significantly among the selected kaolinite samples, and the yield of kaolinite nanotubes is higher for coarse crystalline coal-measure kaolinite.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Guangxin Zhang, Shilin Li, Yifei Li, Xiongbo Dong
Summary: A 2D/1D structure of ZnIn2S4/attapulgite was successfully constructed for the removal of tetracycline hydrochloride and rhodamine B. The ZnIn2S4 nanosheets were anchored on the surface of attapulgite nanorods, resulting in a higher BET surface area and improved photocatalytic activity.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Zahra Mohammadi, Hamid Abbasi-Asl, Mohammad Mehdi Sabzehmeidani, Mehrorang Ghaedi, Zohreh Moradi
Summary: In this study, an Fe2O3/2D-C3N4/NiFe-LDH composite was successfully synthesized from waste iron rusts using pyrolysis and co-precipitation methods and investigated as a stable photocatalyst for the degradation of cationic dyes. The results showed that the fabricated composite exhibited enhanced photocatalytic performance compared to pure Fe2O3 and Fe2O3/g-C3N4. The maximum elimination efficiencies of MB and RhB were 91.2% and 88.5% respectively. The photocatalyst could be efficiently recovered using an applied magnetic field and was found to be chemically stable and corrosion resistant.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Yong Hong Wang, Weike Zhao, Qiuhua Zhang, Junwu Liu, Panyan Zhu, Lei Yao, Gan Chen, Pingli Liu
Summary: This study prepared polyethylene-based nanocomposites and compared the mechanical and thermal properties of different fillers. The results showed that the composites with MAT as functional filler exhibited superior impact toughness and elongation at break, and could enhance the melting point range and flame retardancy of the nanocomposites.
APPLIED CLAY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Yan Liu, Junhao Wei, Daohan Zhang, Xiaoyang Liu, Ziqing Yan, Jun Tan
Summary: The formation mechanisms of the coexisting high Sr/Y granitoids and low Sr/Y granitoids in the Liaodong Peninsula indicate intensive crustal reworking in the North China Craton, possibly associated with the rollback of the subducting Paleo-Pacific plate.
Article
Chemistry, Physical
Piyush Sriwastava, Veer Vikram Singh, George Mathew, Toshihiro Kogure, Satish Myneni
Summary: This study assesses the origin of clay in different red bole layers in the Deccan volcanic province and identifies two processes of clay formation: pedogenesis and palagonitization.
APPLIED CLAY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Wei Liu, Lianjun Feng, Xiujin Liu, Tiejun Li, Hongwei Li, Xiaofei Pan, Cuiqin Si
Summary: Two rock series were identified in the Chinese Altay, with the overlying series consisting of fine sandstone and siltstone and the underlying series including gneiss and amphibolite. The CA granites were derived from the underlying series and exhibit distinct N-O isotopic characteristics.
Article
Chemistry, Physical
An T. Ta, R. Seaton Ullberg, Simon R. Phillpot
Summary: In this study, the surface reconstruction of pyrophyllite edges in a dehydrated context was investigated using density functional theory. Three primary reconstruction mechanisms were identified and the driving force for reconstruction was found to be the reduction in overall relative bond deficiency and charge redistribution. The formation energies of dehydrated and hydrated surfaces were determined, and it was found that the presence of water terminating agents significantly reduced energetic costs. Linear regression models were explored to predict surface formation energies based on relative bond deficiency and charge, but were found to not be predictive due to the small dataset.
APPLIED CLAY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Laura Matana Koproski, Natali Barbosa, David Debruyne, Elson Paiva de Oliveira, Natanael da Silva Barbosa, Antonio Marcos V. Moraes, Alice Marques Pereira Lau, Roberto Paulo Zanon dos Santos
Summary: The Sa similar to o Jose ' do Jacuipe Suite (SSJJ) is composed of mafic and ultramafic rocks that are related to subduction zones and occur in the Itabuna Salvador-Curac'a Orogen. Petrographical and elemental analysis of the rocks suggest their derivation from a metasomatic mantle in a suprasubduction setting, and their characteristic signatures are similar to ophiolites generated in supra-subduction zone environments worldwide. New age data indicate that the SSJJ suite crystallized after the formation of other magmatic rocks in the area.
Article
Chemistry, Physical
Chang Xiao, Zhaoyun Chai, Tianyu Li, Ke Yan, Xiangyu Liu, Yuxu Shen, Zipeng Xin
Summary: Clays often contain lattice defects due to the external environment, which have a significant influence on their physical and mechanical properties. This study constructed defective kaolinite with Si vacancy defects to investigate its mechanical properties and deformation failure mechanism under different uniaxial tensile and compressive conditions using molecular dynamics methods. The micromechanical behavior and formation mechanism of kaolinite were revealed, showing that the introduction of point defects reduced the peak strength and elastic modulus of kaolinite to different degrees, with pronounced anisotropy depending on the loading direction.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Ernestino Lufrano, Luigi Coppola, Isabella Nicotera, Cataldo Simari
Summary: This study presents a novel nanocomposite gel polymer electrolyte that enhances the durability, safety, and scalability of lithium-ion batteries. The electrolyte is prepared using a low-cost, solvent-free, and energy-saving method, and is characterized using various experimental techniques. The electrolyte shows satisfactory lithium-ion transport properties.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Ke Wang, Shiyong Sun, Yevgeny Aleksandrovich Golubev, Sen Lin, Jin Liu, Faqin Dong, Elena Leonidovna Kotova, Olga Borisovna Kotova
Summary: The combination of clay mineral nanozymes and natural enzymes has led to the construction of a high-performance enzymatic cascade system, which shows improved stability and catalytic efficiency. This work provides a simple and efficient reference for the design of enzyme systems and expands the application field of clay minerals.
APPLIED CLAY SCIENCE
(2023)
