Article
Energy & Fuels
Daofan Wang, Han Jia, Qiuxia Wang, Xiaolong Wen, Ziwei Wei, Qiang Wang, Fangning Fan, Shijie Wen, Kaihe Lv, Dexin Liu
Summary: In this study, the stability of nonionic surfactant-stabilized foam was improved by using a series of Janus nanoparticles. The researchers found that the PMIE-JS3 system exhibited extraordinary foamability and stabilizing ability at a low concentration. Furthermore, they explored the mechanism behind the foam stability and demonstrated that the PMIE-JS3-stabilized foam remained stable even in the presence of crude oil. Sandpack flooding tests confirmed the effectiveness of the PMIE-JS3-stabilized foam in enhancing oil recovery.
Article
Materials Science, Multidisciplinary
Min-Sun Jang, Jong-Min Park, Jinho Kang, Changhyo Sun, Bonuk Koo, Hea-Ran Kim, Young-Tae Kwon, Sangsun Yang, Yunseok Kim, Jae Won Jeong
Summary: In this study, a novel Fe@SiO2-powder-based soft magnetic composite that can withstand high-temperature heat treatment and exhibit unprecedented mechanical strength was developed. By forming a uniform and continuous SiO2 insulation layer on the surface of Fe powder using the sol-gel method, the magnetic performance was improved and the internal insulation matrix and low core loss were maintained even after high-temperature heat treatment.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Bjoern K. Birdsong, Billy W. Hoogendoorn, Fritjof Nilsson, Richard L. Andersson, Antonio J. Capezza, Mikael S. Hedenqvist, Stefano Farris, Antonio Guerrero, Richard T. Olsson
Summary: Graphene oxide (GO) was used as a template to synthesize silicon oxide (SiOx) based 2D-nanomaterials with similar morphological features as the GO sheets. By controlled condensation reaction with low concentrations of GO, 2D-nanoflakes consisting of GO-flakes coated with a silica precursor were obtained. The GO template was fully removable without affecting the nanoflake morphology, providing a method for large-scale preparation of SiOx-based 2D nanosheets.
Article
Chemistry, Multidisciplinary
Maria Antonieta Ramirez-Morales, Anastasia E. Goldt, Polina M. Kalachikova, Javier A. B. Ramirez, Masashi Suzuki, Alexey N. Zhigach, Asma Ben Salah, Liliya Shurygina, Sergey D. Shandakov, Timofei Zatsepin, Dmitry Krasnikov, Toru Maekawa, Evgeny N. Nikolaev, Albert G. Nasibulin
Summary: Carbon-encapsulated iron nanoparticles with a mean diameter of 15 nm were synthesized using a gas-phase reaction at high temperatures. The nanoparticles were stabilized with a coating and showed high specific absorption rate (SAR), making them suitable for magnetic hyperthermia therapy.
Article
Horticulture
Yasmin M. R. Abdellatif, Maha S. Elsayed, Mona M. Hassan, Inas A. Ahmed, Ahmed H. Ragab, Ibrahim Shams M. El-Din, Walid B. Abdelaal, Mona S. Abd El-Aal, Amal F. M. Zein El Din
Summary: This study investigated the effects of nanotechnology on the growth and physiological indexes of date palm plantlets, discovering that the use of specific nanoparticles can enhance plantlet growth and physiological parameters.
Article
Multidisciplinary Sciences
Xiaobo Chen, Siming Zhang, Can Li, Zhijuan Liu, Xianhu Sun, Shaobo Cheng, Dmitri N. Zakharov, Sooyeon Hwang, Yimei Zhu, Jiye Fang, Guofeng Wang, Guangwen Zhou
Summary: This study investigates the composition-dependent ordering mechanisms of Pt-Fe alloy nanoparticles by in situ electron microscopy observations. The findings illustrate that the nanoscale size effect can influence the surface-core interaction and thus control the ordering processes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Physical
Shu Gui, Jing Li, Sujuan Zhang, Gaoli Chen, Zhongliao Wang, Zhaowei Zhu, Xianliang Fu, Sugang Meng, Xiuzhen Zheng, Fuxiang Zhang, Weixin Huang, Shifu Chen
Summary: A novel Au13@Pt/CdS hybrid nanomaterial was prepared and used for the selective redox reaction of aromatic alcohols and nitroarenes. The anchoring of Au13@Pt nanoparticles on CdS provided abundant e- enrichment sites and wider charge transfer channels, leading to significantly improved photocatalytic performance. This study is expected to offer a way to fabricate a dual-functional photocatalyst for selective organic transformations.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Bingfang Zou, Shiyun Lou, Jie Duan, Shaomin Zhou, Yongqiang Wang
Summary: Magnetic-based microfluidic SERS biosensors have great potential in biological analyses due to their easy manipulation, miniaturization, and ultrasensitivity. However, collecting reliable SERS nanoprobe signals for quantitative analysis is challenging due to the irregular aggregation of magnetic carriers. In this study, magnetic/plasmonic hybrid nanostirrers embedded with a Raman reporter are developed to improve the reliability of microfluidic SERS biosensors. Experimental results showed that SERS signals from the magnetic hybrid nanostirrers could serve as microenvironment beacons, and a signal filtering method was proposed to eliminate the influence of irregular aggregation on the SERS nanoprobe.
Article
Chemistry, Physical
Zuzana Bednarikova, Martina Kubovcikova, Iryna Antal, Andrea Antosova, Miroslav Gancar, Jozef Kovac, Radka Sobotova, Vladimir Girman, Diana Fedunova, Martina Koneracka, Zuzana Gazova, Vlasta Zavisova
Summary: Silica-coated magnetic nanoparticles are useful for magnetic separation of nucleic acids. A series of silica-functionalized superparamagnetic iron oxide nanoparticles (SiO2@MNPs) were synthesized for efficient nucleic acid separation in viral infection detection. The size of the nanoparticles influenced their RNA-binding properties and magnetic separation efficiency. The smaller SiO2@MNPs with TEOS/MNPs ratios of 1.0 and 2.0 exhibited the highest binding and separation efficiencies, making them promising candidates for clinical application in RNA viruses.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Applied
Margarita Popova, Neli Koseva, Ivalina Trendafilova, Hristina Lazarova, Violeta Mitova, Judith Mihaly, Denitsa Momekova, Spiro Konstantinov, Iskra Z. Koleva, Petko St Petkov, Georgi N. Vayssilov, Hristiyan A. Aleksandrov, Agnes Szegedi
Summary: Silica nanoparticles incorporating magnetic iron oxides (MS) with sizes around 20 nm were developed for loading the anticancer drug miltefosine, showing potential antiproliferative activity. PEG chains were conjugated to enhance drug loading and release properties. Formulated miltefosine displayed superior cytotoxic effect compared to free drug, with no intrinsic cytotoxicity associated with non-loaded silica nanocomposites.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Maosai Zhang, Wenchuan Guo
Summary: A sensitive and simple analytical method combining Fe3O4@SiO2-based extraction with direct electrochemical detection was successfully applied to individually and simultaneously analyze heavy metal ions (including Cd2+, Pb2+, Cu2+, and Hg2+). The method exhibited good sensitivity with detection limits in the nanomolar range, and achieved recoveries ranging from 96.0% to 104.3% in milk samples. This approach shows great potential for quantitative analysis of multiple heavy metal ions in milk.
Article
Biochemistry & Molecular Biology
Luca Pulvirenti, Francesca Monforte, Francesca Lo Presti, Giovanni Li Volti, Giuseppe Carota, Fulvia Sinatra, Corrado Bongiorno, Giovanni Mannino, Maria Teresa Cambria, Guglielmo Guido Condorelli
Summary: We developed a nanometric hybrid system consisting of Fe3O4 magnetic nanoparticles modified through the growth of Fe-based Metal-organic frameworks, which showed increased loading capability and low toxicity compared to bare Fe3O4 magnetic nanoparticles. The system effectively loaded, carried, and released the drug TMZ for the treatment of glioblastoma multiforme and exhibited stronger inhibition of human glioblastoma cell viability. The internalization of the modified system was found to be more evident than bare nanoparticles, suggesting its potential in targeting brain tumors and overcoming the blood-brain barrier.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Nanoscience & Nanotechnology
Ranjith K. Ramachandran, Jolien Dendooven, Christophe Detavernier
Summary: This study reports the phase and size-controlled synthesis of Fe-Pt nanoalloys using a two-step synthesis procedure, revealing the composition and structure of the nanoalloys through in situ X-ray diffraction and X-ray fluorescence measurements. By changing the total thickness of the bilayers, the size of the resulting bimetallic nanoparticles can be tuned, providing a new approach for the preparation of alloy nano materials.
Article
Chemistry, Analytical
Yanan Hou, Rui Han, Yuanling Sun, Chuannan Luo, Xueying Wang
Summary: This article proposes a method for detecting tumor markers using DNA cross-linked hydrogel-capped magnetic core-shell structure mesoporous silica nanoparticles (Fe3O4@nSiO2@mSiO2). The method is highly sensitive and selective, allowing for the detection of low concentrations of adenosine under low background light conditions.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Zhongwen Luo, Jiahan Xie, Nicholas Kaylor, Diane A. Dickie, Hannah E. Ketcham, Robert J. Davis, T. Brent Gunnoe
Summary: Silica-supported Pd, Rh, and Pt metal nanoparticles catalyze the hydrogenolysis of the Pt-OPh bond of ((t)bpy)Pt(OPh)Cl to release PhOH. Kinetic studies show that Pd exhibits higher reactivity compared to Rh and Pt. The results of kinetic studies with Pd/SiO2 are consistent with a first-order dependence on the catalyst and the molecular Pt(II) complex ((t)bpy)Pt(OPh)Cl. TEM-EDS mapping and ICP-OES measurements reveal approximately 10-16% Pt deposition on the surface of Pd/SiO2 after 1 hour of hydrogenolysis of ((t)bpy)Pt(OPh)Cl.
Article
Engineering, Electrical & Electronic
Maria Emma Villamin, Yoshitaka Kitamoto
IEEE TRANSACTIONS ON MAGNETICS
(2019)
Article
Biophysics
Kumiko Miyajima, Yuki Miwa, Yoshitaka Kitamoto
COLLOIDS AND SURFACES B-BIOINTERFACES
(2019)
Article
Materials Science, Multidisciplinary
Yoshibumi Matsuda, Koji Sakamoto, Yotsuo Yahisa, Yuzuru Hosoe, H. Hosoda, Y. Kitamoto
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Chemistry, Physical
Suko Bagus Trisnanto, Yoshitaka Kitamoto
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Engineering, Electrical & Electronic
Yasushi Enokido, Ryuji Hashimoto, Tomoko Kitamura, Kenichi Suzuki, Kyung-Ku Choi, Yoshitaka Kitamoto
IEEE TRANSACTIONS ON MAGNETICS
(2020)
Article
Materials Science, Multidisciplinary
Yasushi Enokido, Atsushi Koda, Yuji Umeda, Daisuke Tanaka, Yoshitaka Kitamoto
Summary: Sintered R2Fe14B magnets with 50% Y- and Ce-substitution for Nd were studied to reduce Nd content. Substituting Nd with Y increased magnetization, while Ce substitution improved coercivity. Introducing an appropriate amount of Ce and the RFe2 grain-boundary phase enhanced coercivity and residual flux density.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Cell Biology
Xinyue Chen, Shun Iwatani, Toshitaka Kitamoto, Hiroji Chibana, Susumu Kajiwara
Summary: Research on the C. glabrata SYN8 gene has shown that it affects metabolic activity, morphological structure, and biomass in biofilm formation. Deletion of SYN8 seems to have no effect on extracellular matrix production but leads to a notable decrease in adhesion ability during biofilm formation, possibly linked to the repression of two adhesin genes, EPA10 and EPA22. Hypersensitivity to hygromycin B and various ions, as well as abnormal vacuolar morphology in the syn8 Delta mutant, suggest that active vacuolar function is required for biofilm formation of C. glabrata.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Kazuki Isoda, Ryuga Yanagihara, Yoshitaka Kitamoto, Masahiko Hara, Hiroyuki Wada
Summary: Copper sulfide nanoparticles were successfully prepared via laser ablation in liquid. The size of the nanoparticles decreased and absorbance increased with the increase in laser fluence, while the ratio of Cu and S remained constant.
IEICE TRANSACTIONS ON ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Yasushi Enokido, Fumitaka Baba, Yoshitaka Kitamoto
Summary: In this study, sintered Nd-Fe-B magnets with high residual flux densities and magnetic coercivities were successfully manufactured using liquid-bound granules for particle binding. These granules containing terpineol demonstrated improved flowability and suppressed deterioration of magnetic properties. Additionally, the sintered magnets showed a residual magnetic flux density equal to 99.3% of value obtained for the non-granulated powder, proving the applicability of liquid-bound granules for mass production.
MATERIALS TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Munawar Khalil, Ely Arina Haq, Astari Dwiranti, Eka Sunarwidhi Prasedya, Yoshitaka Kitamoto
Summary: This study reports on the synthesis of bifunctional nanocarriers that can accurately and targetedly deliver an anticancer drug. The surface functionalization of the nanocarriers had little effect on their physicochemical properties but significantly influenced drug loading and release efficiency. The conjugation of folic acid led to increased cytotoxicity of the drug-loaded nanocarriers.
Article
Acoustics
Yuta Kurashina, Risa Asano, Makoto Matsui, Takahiro Nomoto, Keita Ando, Kentaro Nakamura, Nobuhiro Nishiyama, Yoshitaka Kitamoto
Summary: Ultrasound is a promising non-invasive technique for transdermal delivery, and a new device was designed to investigate the mechanism of sonophoresis. The experiments showed that the acoustic pressure and cavitation onset are sensitive to the subcutaneous support material, and the penetration of particles depends on their size, material, and the hardness of the subcutaneous support.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2022)
Article
Pharmacology & Pharmacy
Zheng Lin Tan, Kazuhiko Miyanaga, Yoshitaka Kitamoto, Naoyuki Yamamoto
Summary: This study demonstrates the therapeutic potential of SlpB-coated liposomes to deliver immunomodulatory components to the gut immune system.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Pharmacology & Pharmacy
Xue Xie, Yuta Kurashina, Makoto Matsui, Takahiro Nomoto, Munenari Itoh, Hirotaka J. Okano, Kentaro Nakamura, Nobuhiro Nishiyama, Yoshitaka Kitamoto
Summary: The study proposed a transdermal delivery system using sonophoresis with carboxymethyl chitosan nanocarriers to administer bFGF over a wide area of skin. Through ex vivo experiments, the effectiveness of the delivery system was demonstrated, showing that the penetration of bFGF-loaded carboxymethyl chitosan nanocarriers with ultrasound was significantly higher than ultrasound irradiation alone. This research paves the way for future use of polymeric nanocarriers using sonophoresis for biomacromolecule administration.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2022)
Article
Acoustics
Yasuhiko Orita, Susumu Shimanuki, Satoshi Okada, Kentaro Nakamura, Hiroyuki Nakamura, Yoshitaka Kitamoto, Yusuke Shimoyama, Yuta Kurashina
Summary: This study demonstrated the superior acoustic responsiveness of liposomes synthesized under high pressure from supercritical CO2 and irradiated with ultrasound at 237 kHz. The release efficiency of CO2-loaded liposomes was 17.1 times higher than liposomes synthesized using the conventional Bangham method. Liposomes synthesized using supercritical CO2 and mono-ethanolamine had a release efficiency that was 19.8 times higher than the conventional Bangham method. These findings suggest a new liposome synthesis strategy for on-demand drug release using ultrasound irradiation in future therapies.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Ye Chen, Kyohei Okubo, Konstantinos Slavakis, Yoshitaka Kitamoto
Summary: This study proposes a method for estimating the distribution of magnetic nanoparticle (MNP) clusters from recorded AC magnetization spectra using an experimental-based model, and successfully applies it to biosensing.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
