Article
Acoustics
Yuki Maeda, Yamato Hayashi, Jun Fukushima, Hirotsugu Takizawa
Summary: This study first used ultrasonic irradiation on semi-solid hydrogel to accelerate aging and hydrophobic treatment, and investigated the effect of ultrasonic frequency on structure. It was found that ultrasonic irradiation was very effective in promoting the reaction, allowing the preparation of silica xerogels in less than 1/5 of the conventional time.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ananda J. Jadhav, Mostafa Barigou
Summary: The paper focuses on providing indirect evidence for the existence of bulk nanobubbles using various physical and chemical techniques, which require good experimental skills, sound protocols, and reliable equipment. Although no single piece of direct evidence is conclusive, combining multiple results provides strong support for the existence of bulk nanobubbles.
Article
Horticulture
Sevinc Sener, Hulya Saygi
Summary: This study investigated the effects of silver nanoparticles on the growth of boysenberry plants under drought stress and found that 0.1 mg L-1 of silver nanoparticles was the most effective dose for promoting plant growth and development.
Article
Nanoscience & Nanotechnology
Xiuzhen Lin, Weixi Wu, Jianye Fu, Yannan Yang, Bing Guo, Chengzhong Yu, Hao Song
Summary: Controlling the spiky surface coverage can adjust the performance of silica nanoparticles, such as hemocompatibility and pDNA delivery efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Bosheng Zhang, Panchao Zhao, Tianxing Wu
Summary: In this paper, a non-Pt hydrogen evolution catalyst, RuCo NPs/CNTs, was successfully fabricated using a spray-drying coupling high-temperature reduction method. The catalyst exhibited excellent hydrogen evolution reaction (HER) performance and superior durability, providing valuable strategies for water splitting.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Plant Sciences
Asmaa A. Sharf-Eldin, Khairiah Mubarak Alwutayd, Ahmed Abou El-Yazied, Hossam S. El-Beltagi, Basmah M. Alharbi, Mohammad A. M. Eisa, Mohammed Alqurashi, Mohamed Sharaf, Nadi Awad Al-Harbi, Salem Mesfir Al-Qahtani, Mohamed F. M. Ibrahim
Summary: Recently, the use of nanofertilizers in managing plants under stresses has gained attention. However, the role of silicon dioxide nanoparticles (SiO(2)NPs) in regulating maize tolerance to drought stress is still at an early stage. In this study, plants treated with SiO(2)NPs showed improved growth indices and increased levels of chlorophylls, proline, cell membrane integrity, leaf water content, and antioxidant enzymes. Molecular investigation revealed upregulation of PsbD and downregulation of OSM-34 and AQPs in SiO(2)NPs-treated plants under drought stress. This research could contribute to further understanding of how SiO(2)NPs enhance plant resistance to drought stress.
Article
Agronomy
Tina Koehler, Daniel Sebastian Moser, Akos Botezatu, Tharanya Murugesan, Sivasakthi Kaliamoorthy, Mohsen Zarebanadkouki, Manuela Desiree Bienert, Gerd Patrick Bienert, Andrea Carminati, Jana Kholova, Mutez Ahmed
Summary: The study revealed that plant response to soil drying is influenced by soil texture, with different soil textures affecting the plant's sensitivity to soil moisture. Therefore, considering soil properties is crucial for understanding and predicting stomatal regulation during soil drying.
Article
Chemistry, Multidisciplinary
Haihua Ji, Jinghong Wang, Aiyuan Xue, Feiran Chen, Huijuan Guo, Zhenggao Xiao, Zhenyu Wang
Summary: Environmentally friendly nanostructured materials have the potential to effectively manage plant diseases and insect pests. In this study, chitosan-coated mesoporous silica nanoparticles (CS-MSNs) were found to enhance faba bean plant resistance against aphids. CS-MSNs reduced aphid reproduction more effectively than individual chitosan nanoparticles (CNPs), mesoporous silica nanoparticles (MSNs), and the pesticide acetamiprid. The mechanism of CS-MSN-induced plant resistance involved activating endogenous signals and enhancing defense metabolite production. CS-MSNs can be considered as an alternative tool to reduce pesticide use and induce host plant resistance in agroecosystems.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Nanoscience & Nanotechnology
Margot Van der Verren, Vit Vykoukal, Ales Styskalik, Ali Shan Malik, Carmela Aprile, Damien P. Debecker
Summary: Supported gold nanoparticles have a significant impact on catalysis and can selectively oxidize bio-based platform molecules. The addition of a gold stabilizer during synthesis improves the dispersion of gold, resulting in enhanced catalyst performance.
ACS APPLIED NANO MATERIALS
(2022)
Review
Chemistry, Physical
Faheem Akhter, Ahsan Atta Rao, Mahmood Nabi Abbasi, Shafeeque Ahmed Wahocho, Mukhtiar Ali Mallah, Hafiz Anees-ur-Rehman, Zubair Ahmed Chandio
Summary: Silica nanoparticles (SNPs) have great applicability potential in various fields like chemical, biomedical, agriculture, etc. They possess advantageous properties such as mesoporous structure and high surface area, making them excellent carriers for biotic and non-biotic compounds. However, there are still many gaps in the research regarding the full exploitation of the applicable potential of SNPs.
Article
Chemistry, Physical
Emmanuel Keita
Summary: This study used SEM and X-ray microtomography to investigate the drying of porous media saturated with nanoparticle suspensions, finding that as the suspensions dried, nanoparticles formed solid deposits, adding to the initial matrix and decreasing porosity. The deposit was non-uniform in depth due to advection of particles towards the evaporative surface, affecting pore size over a narrow length. These findings were interpreted within a physical model and can aid in designing better porous media considering particle influence in drying processes.
Article
Chemistry, Physical
Huaxing Dai, Qianyu Yang, Rong Sun, Yue Zhang, Qingle Ma, Yifan Shen, Beilei Wang, Yitong Chen, Jialu Xu, Bo Tian, Fang Xu, Chao Wang
Summary: This study demonstrates that accumulation of silica nanoparticles in the liver can induce resistance to immune checkpoint blockade therapy by affecting T cell frequency and tumor infiltration. The findings provide a new mechanism insight into ICB resistance.
Article
Ecology
Ashish A. Malik, Nicholas J. Bouskill
Summary: This article introduces a framework that links drought-impacted microbial processes to rates of soil carbon decomposition and stabilisation in order to advance understanding of microbial drought response mechanisms affecting soil carbon cycling.
FUNCTIONAL ECOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Jiabei Song, Yutong Niu, Fuzhong Li, Shuchen Shi, Wei Cheng
Summary: This article reports a generic and scalable method for assembling pre-synthesized silica nanobelts into macroscopic self-supporting aerogel monoliths. The method involves freezing the silica nanobelt aqueous dispersion and freeze-drying, allowing the density of the aerogel to be tuned predictably by varying the concentration of the nanobelt dispersion. Through this method, functional nanomaterials such as gold nanoparticles, Fe3O4 colloidal spheres, and CdSe/CdS/ZnS core/shell quantum dots can be easily incorporated into the silica nanobelt dispersions to produce composite aerogels. This cryogelation method simplifies the fabrication process of silica aerogels and enables the tailoring of aerogel properties for specific applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Agricultural Engineering
Xing Ren, Xu Duan, Weiwei Cao, Lujie Zhao, Guangyue Ren, Panpan Liu
Summary: This study used low-field nuclear magnetic resonance (LF-NMR) to assess the changes in water status in ursolic acid loaded chitosan nanoparticles during microwave freeze drying (MFD). The results showed mutual migration and transformation of water in different states, and the Page model provided the best description for the drying kinetics.
INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING
(2023)
Article
Construction & Building Technology
Julien Aupoil, Jean-Baptiste Champenois, Jean-Baptiste d'Espinose de Lacaillerie, Arnaud Poulesquen
CEMENT AND CONCRETE RESEARCH
(2019)
Article
Construction & Building Technology
Rim Ragoug, Othman Omikrine Metalssi, Fabien Barberon, Jean-Michel Torrenti, Nicolas Roussel, Loic Divet, Jean-Baptiste d'Espinose de Lacaillerie
CEMENT AND CONCRETE RESEARCH
(2019)
Article
Construction & Building Technology
N. Seigneur, E. Kangni-Foli, V Lagneau, A. Dauzeres, S. Poyet, P. Le Bescop, E. L'Hopital, J-B d'Espinose de Lacaillerie
CEMENT AND CONCRETE RESEARCH
(2020)
Article
Construction & Building Technology
E. Kangni-Foli, S. Poyet, P. Le Bescop, T. Charpentier, F. Bernachy-Barbe, A. Dauzeres, E. L'Hopital, M. Neji, J-B d'espinose de Lacaillerie
CEMENT AND CONCRETE RESEARCH
(2020)
Article
Construction & Building Technology
M. Palacios, S. Gismera, M. M. Alonso, J. B. d'Espinose de Lacaillerie, B. Lothenbach, A. Favier, C. Brumaud, F. Puertas
Summary: The rapid loss of fluidity in sodium silicate-activated slag (SS-AAS) systems has been extensively studied. This study correlates the rheology of these cements with the evolution of reaction products over time, finding that initial precipitation of N-A-S-H and C-N-A-S-H products leads to a significant increase in storage modulus. Application of shear force causes structural breakdown and recovery of fluidity, indicating low attractive forces between particles during early hydration stages.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Construction & Building Technology
Mickael Saillio, Veronique Baroghel-Bouny, Sylvain Pradelle, Matthieu Bertin, Julien Vincent, Jean-Baptiste d'espinose de Lacaillerie
Summary: The study found that anhydrous phases are less decalcified than hydrated phases after carbonation, with most of the calcium in slag-containing cement pastes remaining in the non-hydrated part of the slag. The C-A,S-H phase undergoes significant modification during carbonation, showing a coupling with hydrated aluminate phases. Ultimately, in all carbonated materials, these phases tend to form an aluminosilicate gel with less water content than the original hydrates.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Materials Science, Composites
Mariya A. Kazakova, Nina Semikolenova, Evgeniy Yu Korovin, Viktor A. Zhuravlev, Alexander G. Selyutin, Dmitry A. Velikanov, Sergey Moseenkov, Andrey S. Andreev, Olga B. Lapina, Valentin Suslyaev, Mikhail A. Matsko, Vladimir A. Zakharov, Jean-Baptiste d'Espinose de Lacaillerie
Summary: Novel polyethylene composites based on cobalt modified multi-walled carbon nanotubes were developed for electromagnetic interference shielding. By adjusting the filler loading and Co:MWCNT ratio, the electromagnetic properties of the composites were tuned. The composites showed highly effective electromagnetic wave absorption properties in the 10 MHz - 18 GHz frequency range.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Construction & Building Technology
E. Kangni-Foli, S. Poyet, P. Le Bescop, T. Charpentier, F. Bernachy-Barbe, A. Dauzeres, E. L'Hopital, J-B d'espinose De Lacaillerie
Summary: This study investigated the reactive processes of atmospheric carbonation on cementitious materials. It found that portlandite played a protective role in limiting C-S-H decalcification and reducing carbonation shrinkage and cracking.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Gao-Feng Han, Peng Zhang, Pascal Scholzen, Hyuk-Jun Noh, Mihyun Yang, Do Hyung Kweon, Jong-Pil Jeon, Young Hyun Kim, Seong-Wook Kim, Sun-Phil Han, Andrey S. Andreev, Guillaume Lang, Kyuwook Ihm, Feng Li, Jean-Baptiste D'Espinose de Lacaillerie, Jong-Beom Baek
Summary: In this study, a mechanochemical method was used to enhance the reaction rate of carbon hydrogasification and improve its selectivity. The findings of this work have the potential to advance research in carbon hydrogasification and other solid-gas reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Construction & Building Technology
C. Paillard, M. Aparicio Cordoba, N. Sanson, J. -B. d'Espinose de Lacaillerie, G. Ducouret, P. Boustingorry, M. Jachiet, C. Giraudeau, V. Kocaba
Summary: The loss of dispersing ability by polycarboxylates ether superplasticizers in alkali-activated slag cements has been widely reported. However, there is no clear-cut explanation for this phenomenon. This study investigates the behavior of poly(methacrylate-g-poly(ethylene glycol)) superplasticizers in NaOH or Na2CO3-activated slag pastes. The observed loss of efficiency is not due to specific properties of the slag particles or structural degradation of the polymer, but rather to changes in solvent quality and polymer conformation caused by the ionic strength of the activating solution.
CEMENT AND CONCRETE RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Paula Araujo Gomes, Jean-Baptiste d'espinose de Lacaillerie, Bruno Lartiges, Martin Maliet, Valerie Molinier, Nicolas Passade-Boupat, Nicolas Sanson
Summary: This study investigated the surface charge characteristics of three microalgae (Chlorella vulgaris, Nannochloropsis oculata, and Tetraselmis suecica) and found that their electrokinetic behavior aligned with the predictions of Ohshima's soft particle theory. The findings suggest that electrostatics play a minor role in microalgae aggregation and adhesion, which have significant implications for environmental and industrial processes.
Article
Chemistry, Physical
Othman Omikrine Metalssi, Rim Ragoug, Fabien Barberon, Jean-Baptiste d'Espinose de Lacaillerie, Nicolas Roussel, Loic Divet, Jean-Michel Torrenti
Summary: The purpose of this study is to investigate the effects of early exposure to external sulfates on degradation mechanisms in concrete. Microstructure, physical, and chemical behavior are monitored using various experimental techniques, including NMR (27Al and 29Si), ICP, XRD, MIP, and SEM. The results show that mature Portland cement paste degrades rapidly due to the presence of compressed ettringite and gypsum, while the chemical mechanism varies with the duration of curing.
Article
Chemistry, Physical
Pascal Scholzen, Guillaume Lang, Andrey S. Andreev, Alberto Quintana, James Malloy, Christopher J. Jensen, Kai Liu, Jean-Baptiste D'espinose de Lacaillerie
Summary: The magnetic properties of electrodeposited cobalt metal nanowires grown in porous membranes are significantly affected by the synthesis conditions, particularly the role of electrolyte additives. Through magnetometry and internal field nuclear magnetic resonance (IF NMR) studies, the magnetic and crystalline structures of Co nanowires with diameters of 50 and 200 nm were compared under different synthesis conditions. The presence of organic additives was found to affect the size and boundaries of cobalt crystal domains, leading to a different magnetic anisotropy behavior in the nanowires.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Ilya V. Yakovlev, Stanislav S. Yakushkin, Mariya A. Kazakova, Sergey N. Trukhan, Zoya N. Volkova, Alexander P. Gerashchenko, Andrey S. Andreev, Arcady V. Ishchenko, Oleg N. Martyanov, Olga B. Lapina, Jean-Baptiste d'Espinose de Lacaillerie
Summary: The research combines Co-59 IF NMR and FMR spectroscopies to study metallic Co nanoparticles enclosed in carbon nanotubes, revealing most particles as prolate spheroids with an aspect ratio between 1 and 2. The accurate calculation of superparamagnetic blocking size is achieved by introducing the actual volume of ellipsoids from image processing. Additionally, Co-59 IF NMR and FMR experiments conducted at different temperatures demonstrate the thermal blocking of superparamagnetic particles, aligning with TEM particle volume distribution, thus confirming the effectiveness of magnetic resonance techniques for Co nanoparticle characterization in bulk samples.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Ceramics
Quang Hung Nguyen, Mohamed Hanafi, Jan-Philip Merkl, Jean-Baptiste D'Espinose de Lacaillerie
Summary: This study investigated the evolution of pore size distribution in fresh unconsolidated geopolymer paste using a new method, revealing that pores gradually refine and mesoporous volume decreases within the first week. This may be attributed to the active condensation of the geopolymer network. The results complement existing data on the structural evolution of geopolymers with time.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)