Article
Chemistry, Multidisciplinary
Saruta Deeprasert, Lilin Wang, Konstantinos Simeonidis, Nguyen Thi Kim Thanh, Etienne Duguet, Stefanos Mourdikoudis
Summary: The study describes a synthesis method for nanocomposites composed of silica nanoparticles decorated with magnetic maghemite nanoparticles on their surface dimples, for use in detecting and recovering arsenic in water. The process involves amination and carboxylation to graft the maghemite nanoparticles onto the silica nanoparticles, resulting in magnetic nanocomposites suitable for environmentally friendly arsenic detection and removal. This approach shows promise in the field of environmental remediation.
Article
Nanoscience & Nanotechnology
Yue Gao, Xiangyang Shi, Mingwu Shen
Summary: Advancements in nanotechnology have paved the way for innovative solutions in clinical treatments, particularly in the development of ultrasmall iron oxide nanoparticles (USIO NPs) for intelligent nanoplatforms and imaging-guided therapies to combat diseases. Collaboration with other nanomaterials and the potential future directions of USIO NP-based nanoplatforms hold promise for the field of smart nanomedicines.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Justin B. Patty, Shana Havenridge, Dylan Tietje-Mckinney, Maxime A. Siegler, Kundan K. Singh, Roumina Hajy Hosseini, Mohamed Ghabin, Christine M. Aikens, Anindita Das
Summary: The article reports the first example of a chiral mixed thiolate/stibine-protected gold cluster, with the chirality originating from a unique arrangement on an achiral Au-13 core. The structure and properties of this new Au-18 cluster are found to be different from other reported achiral Au-18 clusters and the only other stibine-protected [Au-13(SbPh3)(8)Cl-4](+) cluster, highlighting the importance of detailed analysis on its geometric and electronic structures for understanding its optical properties, reactivity, and stability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Po-Chun Chang, Venkata Ramana Mudinepalli, Shi-Yu Liu, Hung-Lin Lin, Chuan-Che Hsu, Yu-Tso Liao, Sora Obinata, Takashi Kimura, Ming-Yau Chern, Fang-Yuh Lo, Wen-Chin Lin
Summary: The study observed magnetic modulation on YIG by depositing a CoOx top layer. The nonuniform stoichiometric distribution in the CoOx layer and the magnetic coupling effects between ferromagnetic CoOx and antiferromagnetic CoO were confirmed to be the origin of the various magnetic behaviors observed. Ferromagnetic resonance measurements also demonstrated considerable magnetic coupling effect on the dynamic magnetism of the YIG.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
A. Omelyanchik, S. Villa, M. Vasilakaki, G. Singh, A. M. Ferretti, A. Ponti, F. Canepa, G. Margaris, K. N. Trohidou, D. Peddis
Summary: By designing nanoparticle systems with core/shell morphology, magnetic anisotropy was successfully modulated, leading to adjustments in magnetic dipolar interactions between particles. Both nanoparticle systems exhibit high saturation magnetisation and display superparamagnetic behavior at room temperature, with strong exchange coupling observed at the core/shell interface.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Mingwei Yang, Kuijuan Jin, Hongbao Yao, Qinghua Zhang, Yiru Ji, Lin Gu, Wenning Ren, Jiali Zhao, Jiaou Wang, Er-Jia Guo, Chen Ge, Can Wang, Xiulai Xu, Qiong Wu, Guozhen Yang
Summary: Various emergent phenomena are enabled by interface engineering in complex oxides heterostructures. Different magnetic behaviors, including ferromagnetic coupling, are observed in differently thick LMO films epitaxially deposited on substrates, shedding new lights on manipulating oxides functionality.
Article
Multidisciplinary Sciences
Jong Hyuk Kim, Ki Won Jeong, Dong Gun Oh, Hyun Jun Shin, Jae Min Hong, Jin Seok Kim, Jae Young Moon, Nara Lee, Young Jai Choi
Summary: The frustrated antiferromagnetic order in double-perovskite multiferroic Yb2CoMnO6 induces ferroelectric polarization at 52K, leading to strong coupling between ferromagnetic-like hysteresis loops and dielectric constant/ferroelectric polarization at lower temperatures. Unlike Lu2CoMnO6, Yb2CoMnO6 exhibits additional ferroelectric polarization below 20K.
SCIENTIFIC REPORTS
(2021)
Review
Chemistry, Physical
Xue Xu, Huijing Xiang, Zhijie Wang, Chunjin Wu, Chichong Lu
Summary: Magnetic iron oxide nanoclusters (IONCs), consisting of multiple single magnetic iron oxide nanoparticles (IONPs), exhibit unique magnetic properties and biosafety, making them highly promising for biomedical applications. Doping engineering of IONCs has been explored to tailor their physical and chemical properties, and this review summarizes the recent progress and implications of such engineering in vitro and in vivo. The functionalization and biological responses of metal-doped IONCs are also discussed, providing insights for further research in multifunctional biomedical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Physical
Xue Xu, Huijing Xiang, Zhijie Wang, Chunjin Wu, Chichong Lu
Summary: The article introduces the multifunctionality and importance of magnetic iron oxide nanoclusters in biomedical applications, emphasizing the research significance of doping engineering and functionalization of these nanoclusters.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Multidisciplinary
Qiao Jin, Zhiwen Wang, Qinghua Zhang, Yonghong Yu, Shan Lin, Shengru Chen, Mingqun Qi, He Bai, Amanda Huon, Qian Li, Le Wang, Xinmao Yin, Chi Sin Tang, Andrew T. S. Wee, Fanqi Meng, Jiali Zhao, Jia-Ou Wang, Haizhong Guo, Chen Ge, Can Wang, Wensheng Yan, Tao Zhu, Lin Gu, Scott A. Chambers, Sujit Das, Timothy Charlton, Michael R. Fitzsimmons, Gang-Qin Liu, Shanmin Wang, Kui-Juan Jin, Hongxin Yang, Er-Jia Guo
Summary: Heterointerfaces play an important role in the discovery of novel electronic and magnetic states. This study successfully synthesized and characterized Cr2O3-CrN superlattices and observed room-temperature ferromagnetic spin ordering at the interfaces between these two antiferromagnets. The findings provide insights into the unexpected properties of oxide-nitride interfaces and offer possibilities for exploring hidden phases in low-dimensional quantum heterostructures.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Liang Jia, Xin Li, Hui Liu, Jindong Xia, Xiangyang Shi, Mingwu Shen
Summary: This study presents a facile strategy to prepare cell membrane-coated nanoclusters with pH-responsiveness, which can target tumors and release drugs effectively.
Article
Materials Science, Multidisciplinary
Megha Vagadia, Suman Sardar, Tejas Tank, Sarmistha Das, Brandon Gunn, Parul Pandey, R. Huebner, Fanny Rodolakis, Gilberto Fabbris, Yongseong Choi, Daniel Haskel, Alex Frano, D. S. Rana
Summary: This paper demonstrates an extraordinarily elevated fourfold anisotropic magnetoresistance (AMR) in 3d-5d heterostructures and uncovers the contributions of biaxial magnetic anisotropy and spin-flop transition to the signal. The subtle interaction of pseudospin coupling with the lattice and external magnetic field captured in this emerging phenomenon holds great potential in AFM spintronics.
Article
Materials Science, Multidisciplinary
Sarah Jenkins, Roy W. Chantrell, Richard F. L. Evans
Summary: Antiferromagnetic materials have the potential for high-speed, high-density spintronic devices, but reliable detection of their state is challenging. Exchange bias can help with this detection. Intermixing at the interfaces between ferromagnetic and antiferromagnetic layers plays a crucial role in determining the spin state and key parameters in exchange-biased systems.
Article
Materials Science, Multidisciplinary
M. Wu, Y. Li, H. Luo, X. Liao, W. Liu, X. Huang, J. Shi, K. H. L. Zhang, T. Deng, Y. Du, J. Chen, D. Fu, H. -q. Wang, J. Kang
Summary: Element-specific XMCD and AHE were studied to investigate the magnetic and electronic structural evolutions of diverse proton-doping spinel NiCo2O4 films. The results revealed that proton-doping led to the reduction of Co valence state, resulting in the emergence of antiferromagnetic phase. Moreover, the magnetic anisotropy and orbital magnetic moment were decreased by proton-doping.
Article
Immunology
Xiang Li, Zhen Wang, Mian Ma, Zhouqing Chen, Xiang-long Tang, Zhong Wang
Summary: This study developed an efficient CDT agent for synergistic chemo/CDT therapy mediated by the photothermal effect, showing good biocompatibility, specific targeting, and significant antitumor effects.
JOURNAL OF IMMUNOLOGY RESEARCH
(2021)
Article
Chemistry, Physical
Martin H. Petersen, Nathan Vernet, Will P. Gates, Felix J. Villacorta, Seiko Ohira-Kawamura, Yukinobu Kawakita, Masatoshi Arai, Gerald Kneller, Heloisa N. Bordallo
Summary: The study reveals that temperature has a significant impact on the polarization effect of water molecules in the interlayer space of clay minerals montmorillonite and hectorite. Additionally, hydrogen atoms in water show stronger hydrogen bonding at the interlayer surfaces of montmorillonite, leading to smaller motional amplitudes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Engineering, Environmental
Luis Duque, Lucia Gutierrez, Nieves Menendez, Pilar Herrasti, Eva Mazario
Summary: A new methodology has been developed for the continuous elimination of cobalt, nickel, and a mixture of both metals from synthetic wastewater. By electrochemically forming ferrites of these metals, efficiencies of up to 98% were achieved, with particle sizes of approximately 30 nm and hemispherical or flower-like shapes. A flow system prototype was designed for recirculating the solution with contaminating metals, achieving approximately 90% recovery with easy magnetic harvesting.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Analytical
S. Mirehbar, S. Fernandez-Velayos, E. Mazario, N. Menendez, P. Herrasti, F. J. Recio, I Sires
Summary: Peroxydisulfate (PDS) -based advanced oxidation processes using Fe3O4-modified reticulated vitreous carbon (RVC) cathodes were found to be effective in organic molecule oxidation. The optimal conditions for total and fast color removal were determined to be 2 mM PDS and 10 mA current, achieving > 80% TOC abatement within 45 minutes.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Alejandro Villacampa, Luis Duque, Olga Juanes, Francisco Javier Palomares, Pilar Herrasti, Nieves Menendez
Summary: The use of magnetic nanoparticles in C-C coupling reactions allows for easy recovery of the catalyst and has the potential for improving efficiency in organic transformations. This study reports the synthesis and characterization of Pd/Fe@Fe3O4 nanoparticles, which demonstrated high catalytic activity in Suzuki-Miyaura coupling reactions with the application of local heating by an alternating magnetic field. The catalyst could also be recycled multiple times.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Environmental Sciences
S. Fernandez-Velayos, J. Sanchez-Marcos, A. Munoz-Bonilla, P. Herrasti, N. Menendez, E. Mazario
Summary: A method using 3D printing technology to prepare ZVI@PLA catalysts without post etching treatment was reported. The use of non-contact heating by magnetic induction (MIH) was shown to reactivate the surface of the catalyst, allowing for the ZVI@PLA catalyst to be reused up to 10 cycles with maintained efficiency. On the other hand, traditional thermal bath heating resulted in a gradual decrease in kinetic constant over 10 cycles.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Sandra Cortijo-Campos, Carlos Prieto, Alicia De Andres
Summary: A large set of single-layer and few-layer MoS2 flakes with sizes ranging from 10 nm to 20 μm were successfully obtained on sapphire substrate. The flakes were found to relax and experience hole doping as their size decreases. Additionally, the PL intensity was found to be independent of the size but correlated with the presence of defects.
Article
Chemistry, Multidisciplinary
Fernanda L. Rivera, Nieves Menendez, Eva Mazario, Pilar Herrasti
Summary: In this study, a magnetic iron oxide nanoparticle-coated RVC electrode was used for the degradation of methylene blue. The electrode prepared by the dipping method showed the best degradation performance.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Sergio Fernandez-Velayos, Nieves Menendez, Pilar Herrasti, Eva Mazario
Summary: Fe3O4 catalyst was synthesized in a single step via electrochemical synthesis for the degradation of Ofloxacin (OFX) using sodium persulfate (PS). The effects of catalyst and oxidant concentration, as well as temperature, on the degradation kinetics were studied. The results showed that higher reaction temperature, catalyst, and initial PS dose strongly influenced the degradation efficiency. Thermal activation of persulfate at 60 degrees C resulted in a much greater degradation efficiency compared to 20 degrees C.
Article
Chemistry, Analytical
Eduardo Gaya, Nieves Menendez, Eva Mazario, Pilar Herrasti
Summary: A simple electrochemical sensor based on electrochemically synthesized Fe3O4 nanoparticles was constructed to detect dopamine, uric acid, and ascorbic acid. The sensor showed significant sensitivity and selectivity, without interference from the three analyte molecules presented simultaneously in solution. The sensor has been successfully applied for the detection of these molecules in real samples.
Article
Chemistry, Multidisciplinary
Carmen Abia, Carlos A. Lopez, Javier Gainza, Joao Elias F. S. Rodrigues, Maria T. Fernandez-Diaz, Eva Cespedes, Jose Luis Martinez, Jose Antonio Alonso
Summary: The search for lead-free materials for optoelectronic applications is a current research focus in the field of environment-friendly energy transition. In this study, we investigated the substitution of toxic Pb2+ with Cu2+ in all-inorganic CsPbBr3 perovskite, and explored the CsCuBr3 halide with little previous research. A mechanically-synthesized CsCuBr3 specimen was obtained and characterized by calorimetric and structural analysis techniques. The results revealed a structural phase transition and the presence of magnetic coupling between Cu2+ spins.
Article
Materials Science, Multidisciplinary
R. S. Silva Jr, J. Gainza, J. E. Rodrigues, L. Martinez, E. Cespedes, N. M. Nemes, J. L. Martinez, J. A. Alonso
Summary: In this study, FexTi2S4 polycrystalline materials were prepared using a rapid high-pressure method, and their crystal structure and magnetic properties were investigated. The results revealed a Fe/Ti inversion in the TiS2 layers and different magnetic behaviors depending on the Fe content. Furthermore, the material exhibited better relative cooling power and temperature stability compared to other transition metal sulfides reported in the literature.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Instruments & Instrumentation
Felix J. Villacorta, Damian Martin Rodriguez, Mads Bertelsen, Heloisa N. Bordallo
Summary: To enhance the science case of MIRACLES, a time-of-flight backscattering spectrometer is proposed at ESS, with an optimized neutron guide system. This systematic study improves the transport of cold neutrons and maintains the instrument's ability to carry out neutron scattering experiments on a large dynamic range. By adjusting the geometry and selecting appropriate guide segments, the collection and transport of cold neutrons from the source to the sample position are improved.
QUANTUM BEAM SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
M. A. Laguna-Marco, E. Arias-Egido, V Cuartero, J. Herrero-Albillos, P. Kayser, J. A. Alonso, G. Fabbris, D. Haskel, T. Irifune
Summary: This study investigates the interplay between the magnetic structure of Sr2NiIrO6 and lattice degrees of freedom under high pressure using x-ray absorption spectroscopy and x-ray diffraction. The results show non-monotonic changes in the x-ray magnetic circular dichroism spectrum with increasing pressure, indicating that the observed changes are not a transition from antiferromagnetic to ferromagnetic order. Instead, the changes can be better explained by the weakening/strengthening of the long-range antiferromagnetic interaction between the Jr sublattice planes associated with the reduction of the lattice parameters.
Article
Chemistry, Multidisciplinary
E. Arias-Egido, M. A. Laguna-Marco, C. Piquer, P. Jimenez-Cavero, I Lucas, L. Morellon, F. Gallego, A. Rivera-Calzada, M. Cabero-Piris, J. Santamaria, G. Fabbris, D. Haskel, R. Boada, S. Diaz-Moreno
Summary: A metal-insulator transition is observed in spin-orbit-coupled IrO2 thin films as the film thickness is reduced, with the critical thickness depending on growth orientation. The experimental electrical response fits well with Efros-Shklovskii-VRH and Arrhenius-type behaviors, indicating the importance of electron correlations. Magnetic measurements also suggest a significant role of magnetic order in the electrical properties of IrO2, pointing to a mixed Slater- and Mott-type insulator.
Article
Instruments & Instrumentation
Felix J. Villacorta, Heloisa N. Bordallo, Masatoshi Arai
Summary: The study proposes a future upgrade for the neutron spectrometer MIRACLES, using a new chopper layout concept to increase elastic signal intensity while maintaining the original beamline layout. The challenge lies in achieving efficient pulse multiplication while guaranteeing minimal changes and impact.
QUANTUM BEAM SCIENCE
(2021)