Article
Chemistry, Physical
Tianguan Wang, Xiankang Zhong, Zhi Zhang, Xi Yuan, Li Zhou, Ziqi Zheng, Abdolreza Farhadian, Junying Hu
Summary: Asphaltene precipitation can lead to negative consequences in oil fields, and an effective asphaltene adsorption strategy is crucial. This study utilized Co3O4 nanoparticles as an inhibitor and formed a porous SiO2 film via the sol-gel method. Experimental results showed that the SiO2 film reduced self-aggregation and improved adsorption capacity. Molecular dynamics simulations confirmed the enhanced performance of the modified nanoparticles.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Fatemeh Mahmoudi Alemi, Seyed Ali Mousavi Dehghani, Ali Rashidi, Negahdar Hosseinpour, Saber Mohammadi
Summary: This study synthesized Fe2O3 and functionalized SiO2 nanoparticles to investigate their effects on asphaltene precipitation and aggregation in live oils. The results showed that Fe2O3 nanoparticles better controlled asphaltene precipitation compared to F-SiO2, leading to increased stability and reduced asphaltene structure size. TEM images confirmed these results and indicated an increase in aromatic sheet interlayer spacing.
Article
Chemistry, Analytical
Andrei R. Timerbaev
Summary: Metallodrug delivery using magnetic nanomaterials offers enhanced and controlled drug delivery to specific sites within the body, reducing side effects and protecting drugs from the extracellular environment. This article reviews recent progress in the development of iron oxide nanoparticles loaded with platinum anticancer drugs and examines the application of modern analytical techniques in this field.
Review
Chemistry, Analytical
Andrei R. Timerbaev, Olga Kuznetsova, Bernhard K. Keppler
Summary: This article critically analyzes the current and emerging capabilities of analytical methods for the analysis and characterization of ENPs in seawater in the past decade, focusing on the importance of experimental strategies to avoid the high-salt matrix effect and enrich the nanoparticulate fraction before analysis. The methods rely on elemental mass spectrometry and single-particle mode to characterize the transformation of ENPs in seawater.
Article
Energy & Fuels
Nelson Acevedo, Vicmary Vargas, Vincent Piscitelli, Aurelie Le Beulze, Brice Bouyssiere, Herve Carrier, Jimmy Castillo
Summary: The study shows that SiO2 biogenic nanoparticles interact selectively with previously adsorbed larger asphaltene aggregates, and there is no trend for new large aggregate formation. This finding offers new methodologies for asphaltene removal.
Article
Geochemistry & Geophysics
Juan Xu, Yulong Guo, Shouye Yang, Simon V. Hohl, Wen Zhang
Summary: This study developed a calculation method for SiO2 concentrations in sediment samples based on the mass balance principle. The method showed good accuracy and precision and had the advantages of low sample consumption, high efficiency, and saving time and labor costs compared to separate sample preparation and analysis.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2022)
Article
Chemistry, Physical
Szu-Hsueh Lai, Adrien Reynaud, Ning-Ning Zhang, Minjeong Kwak, Bogdan Vysotskyi, Sergio Dominguez-Medina, Thomas Fortin, Kavya Clement, Martial Defoort, Tae Geol Lee, Kun Liu, Sebastien Hentz, Christophe D. Masselon
Summary: Nanoparticles have unique size-dependent properties and find applications in various industries and biomedicine. A novel nano-electro-mechanical sensor mass spectrometry (NEMS-MS) technology was used to characterize the mass distributions and shapes of nanoparticles. The results showed good agreement with imaging data and confirmed the potential of NEMS-MS-based measurements for nanoparticle characterization.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Energy & Fuels
Ivan Moncayo-Riascos, Christian Guerrero-Benavides, Juliana Giraldo, Oscar Ramirez-Jaramillo, Fernando A. Rojas-Ruiz, Jorge A. Orrego-Ruiz, Cristiam Cundar, Wilson A. Canas-Marin, Raul Osorio Gallego
Summary: A machine learning-based classification model and a linear regression model were proposed in this study to predict the risk of asphaltene damage and the asphaltene onset pressure. Through experimental evaluation and comparison, the accuracy and effectiveness of these models were demonstrated. The integrated model contributes to predicting and preventing the decline in oil production caused by asphaltene precipitation.
Article
Chemistry, Multidisciplinary
Shaun G. Bevers, Casey Smith, Stephanie Brown, Nathan Malone, D. Howard Fairbrother, Aaron J. Goodman, James F. Ranville
Summary: Nanomaterials play a crucial role in environmental processes, but characterizing and quantifying them in environmental matrices is challenging. This study demonstrates the deleterious effects of particle-based backgrounds on the analysis of particle number concentration and particle size distribution using single particle inductively coupled plasma mass spectrometry. A novel methodology is proposed to minimize the effects of particle coincidence and model the particle size distribution accurately. The significance of this methodology is demonstrated through the analysis of environmentally relevant nanomaterials and colloids.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Chemistry, Multidisciplinary
Benjamin T. T. Manard, Veronica C. C. Bradley, C. Derrick Quarles, Lyndsey Hendriks, Daniel R. R. Dunlap, Cole R. R. Hexel, Patrick Sullivan, Hunter B. B. Andrews
Summary: This study developed an innovative autosampler to mix and transport the blanks, standards, and samples into a high-efficiency single particle introduction system for the analysis of gold nanoparticles (Au NPs) and silver shelled gold core nanospheres (Au/Ag NPs). The optimized transport efficiency into the inductively coupled plasma-time of flight-mass spectrometry (ICP-TOF-MS) was more than 80%, allowing for high-throughput sample analysis. The methodology displayed good long-term reproducibility, with a relative standard deviation (%RSD) of 3.54% for in-run variation and 9.52% for day-to-day variation.
Article
Chemistry, Analytical
Marzia Cosmi, Nathaly Gonzalez-Quinonez, Pablo Tejerina Diaz, Angel Manteca, Elisa Blanco-Gonzalez, Jorg Bettmer, Maria Montes-Bayon, Mario Corte-Rodriguez
Summary: By utilizing SP-ICP-MS and TEM techniques, the study detected the release of metallic nanoparticles from dental implants in the oral environment. The addition of mucosal bacteria significantly decreased the production of nanoparticles, indicating a potential impact on biotribocorrosion.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Analytical
Qi Kang, Beibei Chen, Man He, Bin Hu
Summary: A simple and direct ICP-MS-based assay was developed for the simultaneous detection of three miRNAs by combining the lanthanide labeling strategy with entropy-driven catalytic amplification. This method allows for flexible probe design, good sensitivity, and excellent specificity.
ANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Feiyun Tou, Zuoshun Niu, Jiquan Fu, Jiayuan Wu, Min Liu, Yi Yang
Summary: This study developed a simple standardized protocol for separating and analyzing metal-containing NPs in sediment samples using SP-ICP-MS technique. The separation efficiency of NPs and large particles in sediments was recommended with a settling time of 6 hours, and optimal sediment to water ratio, ultrasonication power, time, and temperature were determined. The recoveries of spiked Ag and Au-NPs were 71.4% and 81.1% using the optimized method.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Zhizhong Li, Madjid Hadioui, Kevin J. J. Wilkinson
Summary: This study investigated the analysis of Si-NPs in soil using single-particle ICP-MS. A size detection limit of 29 +/- 3 nm was achieved in Milli-Q water. Na4P2O7 was found to be the best extractant for Si-NP, preserving their size distribution for at least one month.
Article
Energy & Fuels
Hamid Bahmaninia, Sajjad Ansari, Mohammad-Reza Mohammadi, Saeid Norouzi-Apourvari, Abdolhossein Hemmati-Sarapardeh, Mahin Schaffie, Mohammad Ranjbar
Summary: The nature of asphaltene and mineralogy of reservoir rock affect the adsorption of asphaltene onto the rock surface. The adsorption amount of asphaltenes on the quartz surface is directly related to the nitrogen content and polarity of asphaltene. Increasing flow rate in the dynamic adsorption process can reduce asphaltene uptake by quartz, indicating the physical nature of asphaltene adsorption on quartz. The competitive presence of water with asphaltene for the surface-active sites affects asphaltene uptake by quartz in the three-phase system compared to the two-phase system.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Physical
Jimmy Castillo, Vicmary Vargas, Genesis Gonzalez, Wladimir Ruiz, Brice Bouyssiere
Summary: This study investigated the adsorption behavior of asphaltene onto silica nanoparticles prepared from rice husk ash using UV-vis absorbance and fluorescence spectroscopy. The results showed that larger aggregates progressively adsorbed onto the nanoparticles, with species of high molecular weight being preferentially adsorbed.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Agronomy
Pedro Gomez-Vera, Hector Blanco-Flores, Ana Marta Francisco, Jimmy Castillo, Wilmer Tezara
Summary: The research found that spraying with SiO2-NF had a positive impact on the growth of cocoa plants, increasing nutrient content and promoting growth. In both clones, SiO2-NF increased the rate of photosynthesis and electron transport, leading to improved photosynthetic processes and growth.
EXPERIMENTAL AGRICULTURE
(2021)
Article
Materials Science, Multidisciplinary
Jimmy Castillo, Michelina Arcuri, Vicmary Vargas, Vincent Piscitelli
Summary: In this study, two methodologies were used to prepare nano compounds derived from a mixture of metal oxides supported in biogenic silica nanoparticles. The composition and optical properties of the samples were characterized, and the effect of metal oxide confinement within the nanoparticle structure was studied.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Review
Chemistry, Multidisciplinary
Aurore Mere, Maxime Enrico, Honggang Zhou, Emmanuel Tessier, Brice Bouyssiere
Summary: The presence of arsenic in natural gas and liquid hydrocarbons is a major concern for oil companies. Analyzing arsenic in oil streams is crucial to address health risks, environmental issues, poisoning of catalysts, and clogging of pipes. Reliable methods are also needed for the analysis of arsenic in new energy feedstocks contaminated with the element.
Article
Energy & Fuels
Orlando Villegas, Germain Salvato Vallverdu, Brice Bouyssiere, Socrates Acevedo, Jimmy Castillo, Isabelle Baraille
Summary: The aggregation behavior of asphaltene subfractions A1 and A2 in different solvents were studied using molecular dynamics simulations. The size and distribution of the aggregates were found to be correlated with the aromaticity of the molecules. In tetrahydrofuran (THF), large aggregates were observed to break down into smaller aggregates, which explains the bimodal size distribution often observed in gel permeation chromatography (GPC) analysis. The dipole moment of the aggregates in THF and toluene was found to decrease with an increase in the number of molecules, indicating a random structure of the aggregates. The contributions of different molecular interactions to the aggregation mechanism were discussed.
Review
Chemistry, Multidisciplinary
Socrates Acevedo, Jimmy Castillo
Summary: This work focuses on several issues related to asphaltenes and asphaltene aggregates, including the isolation of real asphaltene molecules and their comparison with average structures obtained using laboratory techniques. Simulation calculations and experimental analysis were used to study the dissolution and aggregation of asphaltenes in toluene and THF solvents. The results from molecular dynamics simulations were compared with experimental results, allowing for the estimation of hydrodynamic ratios and size distribution of asphaltenes.
Article
Energy & Fuels
Oscar Lacroix-Andrivet, Julie Guillemant, Anna Luiza Mendes Siqueira, Marie Hubert-Roux, Corinne Loutelier-Bourhis, Brice Bouyssiere, Pierre Giusti, Carlos Afonso
Summary: Long-term aging of bitumen leads to the formation of oxidation products, affecting its properties. Aggregations of polar molecules and aliphatic compounds are observed in asphaltene and wax fractions respectively, which can be studied using gel permeation chromatography (GPC). Fourier transform ion cyclotron resonance (FTICR) was used to characterize oxidative aging and ionization sources were used to differentiate between LMW and HMW fractions. Results show that oxidation products are found in LMW fraction, while aggregate molecules in HMW fraction are protected from oxidation.
Review
Energy & Fuels
Wladimir Ruiz, Remi Moulian, Ryan P. Rodgers, Pierre Giusti, Brice Bouyssiere, Alan G. Marshall, Caroline Barrere-Mangote, Julie Guillemant
Summary: In the field of petroleomics and metallopetroleomics, the GPC technique coupled with high-resolution detection technologies has been instrumental in analyzing and preparing heavy crude oil and its fractions for over five decades. The use of tetrahydrofuran as the mobile phase and polystyrene-divinylbenzene copolymer as the stationary phase in GPC has proven effective to prevent compound retention in the column. Additionally, techniques like HPTLC, RPLC, and NPHPLC have been used in conjunction with GPC for multidimensional separations. GPC, combined with high-resolution techniques, is a reliable tool for detecting organic and inorganic species in bio-oils, making it valuable for researchers and industry professionals in the field of feedstocks changes and new energy production.
Article
Chemistry, Analytical
Javier Garcia-Bellido, Laura Freije-Carrelo, Montserrat Redondo-Velasco, Marco Piparo, Mariosimone Zoccali, Luigi Mondello, Mariella Moldovan, Brice Bouyssiere, Pierre Giusti, Jorge Ruiz Encinar
Summary: In this study, the potential and applicability of a novel GC-combustion-MS approach as a nitrogen-selective GC detector were demonstrated. By adjusting the operating conditions, the formation of volatile NO species during the combustion step was achieved, leading to a selective N-signal. The method showed a very low detection limit (0.02 pg N injected) and provided accurate and precise results.
ANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Jimmy Castillo, Rodriguez Luis
Summary: In this study, the adsorption of methylene blue onto graphene obtained from rice husks was investigated experimentally and theoretically. The experimental results demonstrated that graphene has good adsorbent qualities, while the theoretical simulation revealed the nature of different interactions involved in the adsorption process. The adsorption energy analysis showed that the predominant interaction between methylene blue molecules and the graphene sheet is pi-pi Lennard-Jones type.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Energy & Fuels
Jimmy Castillo, Genesis Gonzalez, Mathieu Menta, Javier Jimenez-Lamana, Brice Bouyssiere
Summary: In this study, SiO2 nanoparticles produced from rice husks were used as adsorbents for asphaltene. The results showed that the vanadyl compounds associated with asphaltene aggregates were mostly adsorbed on the nanoparticles. These findings have important implications for understanding the adsorption mechanisms of asphaltene aggregates and for practical applications using nanoparticles to concentrate and separate vanadium compounds from crude oil.
Article
Energy & Fuels
Jimmy Castillo, Genesis Gonzalez, Mathieu Menta, Javier Jimenez-Lamana, Brice Bouyssiere
Summary: In this study, SiO2 nanoparticles were used as adsorbents for asphaltene. The results showed that vanadium compounds associated with asphaltene aggregates were mostly adsorbed onto the nanoparticles, especially in the pores. The high-resolution analysis techniques confirmed the size and composition of the nanoparticles and their strong adsorption of vanadium compounds.
Article
Chemistry, Physical
Gabriela L. Galarza-Acosta, Jose G. Parra, Raiza Hernandez-Bravo, Peter Iza, Eduardo Schott, Ximena Zarate, Jimmy Castillo, Vladimiro Mujica
Summary: In this study, the adsorption process of different surfactants on SiO2 nanoparticles was investigated using experimental and molecular dynamics simulation methods. The results showed that SiO2 nanoparticles have a strong affinity for ethanol solvent. The presence of Na+ ions reduced the electrostatic repulsion and promoted the adsorption process. The findings from both experimental and simulation studies can be used to predict and design the hydrophobicity of coated nanoparticles.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Aurore Lecharlier, Herve Carrier, Brice Bouyssiere, Guilhem Caumette, Pierre Chiquet, Isabelle Le Hecho
Summary: This paper presents a novel device for the direct in situ high-pressure preconcentration of trace compounds (TC) in renewable energy biomethane. The device utilizes a multibed adsorbent tube and can sample gases at pressures up to 200 bar(a). Experimental results show that the preconcentration process is not significantly affected by the gas sampling pressure. Additionally, the device successfully detects and quantifies a wide range of volatile organic TC in a real biomethane stream.
