Article
Chemistry, Multidisciplinary
A. Pariente, E. Peled, I Zlotver, A. Sosnik
Summary: Sonodynamic therapy is an effective localized anticancer therapy that generates reactive oxygen species to kill cancer cells, showing potential for application in cancer treatment.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Physical
Yan Zhang, Peiwei Hu, Runqin Gao, Yanni Dai, Gangli Cheng
Summary: The major issue with the application of nano-zero valent iron (nZVI) is the degradation of performance due to continuous oxidation. A composite material called TiO2@nZVI, which slows down the oxidation of iron and improves the removal efficiency of hexavalent chromium (Cr(VI)), has been developed.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Green & Sustainable Science & Technology
Jeongsoo Hong, Norihiro Suzuki, Kazuya Nakata, Chiaki Terashima, Kyunghwan Kim, Akira Fujishima, Ken-ichi Katsumata
Summary: The study found that iron oxyhydroxide can produce hydrogen under UV irradiation, with the amount of hydrogen produced affected by the presence of oxygen and solution pH. The shape and crystallinity of iron oxyhydroxide remained unchanged after the reaction.
Article
Materials Science, Multidisciplinary
Mei Yu, Jing Shang, Yu Kuang
Summary: This study explores the use of UV-modified rGO as a sole photocatalyst for efficient removal of Cr(VI) under visible light. UV irradiation leads to reduction of oxygen-containing functional groups on GO surface, enhancing the photocatalytic activity of rGO.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Caili Yang, Yanjia Cui, Yingshi Su, Yonghui Cheng, Defu Yao, Yuting Liao, Suyao Liu, Yiwen Fang, Yuqi Wu, Xiaoming Wang, Yibing Song, Gongxuan Lu, Zhen Li
Summary: In this study, Rh2O3 nanoparticles were implanted on the surface of reduced graphene oxide (RGO) by a hydrothermal reaction. Sensitized by Eosin Y, Rh2O3 was converted into metal Rh, forming a strong interaction interface between Rh NPs and RGO. The fabricated Rh/RGO catalyst showed high performance for photocatalytic H-2 evolution under visible light irradiation, with a H-2 evolution rate of 98.1 mmol center dot g(-1)center dot h(-1) and a maximum apparent quantum efficiency of 79.3% at 520 nm. The enhanced performance was attributed to the excellent electron conduction ability of RGO and the strong interaction between Rh NPs and RGO, which accelerated electron transfer and prolonged charge lifetime. The strong interaction also ensured the strong anchoring and excellent stability of the Rh/RGO catalyst.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Jeasmin Akter, Md Abu Hanif, Md Akherul Islam, Kamal Prasad Sapkota, Insup Lee, Jae Ryang Hahn
Summary: The novel alpha-Fe2O3/Ta3N5 nanocomposites demonstrated significantly higher photocatalytic activity due to efficient electron-hole separation and a favorable band-edge position for reactive oxygen species generation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Van Tuong Pham, Maxen Cosset-Cheneau, Ariel Brenac, Olivier Boulle, Alain Marty, Jean-Philippe Attane, Laurent Vila
Summary: In this study, we measured the spin-charge interconversion using the spin Hall effect in various ferromagnetic/Pt nanodevices, and found that interface resistance and spin polarization play crucial roles in spin injection/detection. Additionally, we showed that interfacial asymmetric spin scattering becomes the dominant mechanism of spin injection in our samples.
Article
Chemistry, Physical
Wen Dong, Chunhui Lu, Mingwei Luo, Yuqi Liu, Taotao Han, Yanqing Ge, Xinyi Xue, Yixuan Zhou, Xinlong Xu
Summary: This study explores the potential of optimizing interfacial charge transfer in type-II heterostructures for improving solar energy conversion efficiency. The SnS/SnSe2 heterostructure exhibits higher photoresponsivity, attributed to enhanced light harvesting and efficient charge transportation. These findings provide an effective approach to further enhance the performance of heterostructure-based optoelectronic devices through appropriate interface design.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
M. A. Vidales-Hurtado, A. I. Caudana-Campos, R. A. Mauricio-Sanchez, G. Mendez-Montealvo, F. Caballero-Briones, A. Mendoza-Galvan
Summary: The study investigates the thermo-reversible sol-gel transition in solutions made of titanium n-butoxide, ethanol, water, and nitric acid using in situ temperature-dependent Fourier transform infrared spectroscopy. It was found that the nitrate ion plays a key role in substituting ligands and forming bridges and chelates, leading to gel formation. The elastic component was identified as the most important in the material's structure based on dynamic rheological studies of the temperature-dependent viscoelastic behavior.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Food Science & Technology
Hannes Bitterling, Lilo Mailaender, Walter Vetter, Dietmar R. Kammerer, Florian C. Stintzing
Summary: The impact of naturally occurring furocoumarins on essential agrumen oils was investigated, and it was found that the absence of furocoumarins led to the degradation of terpenes and the formation of hydroperoxides. However, the addition of furocoumarins slowed down the photo degradation and improved the olfactory quality of the oils. Blends of furocoumarins and terpenes can extend the shelf-life of light-sensitive oils.
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
L. Diaz, V. D. Rodriguez, M. Gonzalez-Rodriguez, E. Rodriguez-Castellon, M. Algarra, P. Nunez, E. Moretti
Summary: Low-cost M/TiO2 semiconductor catalysts were prepared by impregnating five different first row transition metals on a commercial titania support, with Cu/TiO2 showing the best photocatalytic activity for hydrogen production under both UV and visible light. Ni/TiO2 and Co/TiO2 also exhibited significant photocatalytic activity under UV light. The Cu/TiO2 catalyst was characterized by TEM and XPS measurements, showing the dispersion of copper species on TiO2 and the oxidation-reduction process during the hydrogen production reaction. Impregnated TiO2 showed higher H-2 production rates compared to non-impregnated TiO2, making Cu/TiO2 a cost-effective alternative to Pt/TiO2 for hydrogen production.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Review
Horticulture
Honggui Peng, Yadan Pang, Qiuhong Liao, Fang Wang, Chun Qian
Summary: UV light irradiation, as a safe and effective physical method, can extend the shelf life and improve the quality of fruits, which aligns with the current trend of consumers pursuing green, healthy, and natural food. Preharvest UV light treatment has positive effects on fruit quality, appearance, flavor, and disease resistance. However, more research is needed to determine the correlation between UV light treatment dose and plant response in actual production.
Article
Chemistry, Physical
Gregory Barbillon
Summary: This study investigates the Fermi level shifts of gold nanospheres on zinc oxide (ZnO) film upon UV irradiation. The shifts are obtained by recording the extinction spectra of gold nanospheres and are attributed to the additional electrons stored in the nanospheres from ZnO film. The blueshift of plasmon resonance of the Au nanospheres indicates the transfer of electrons from ZnO film to Au nanospheres upon UV irradiation. The Fermi level shifts vary with UV irradiation time and can be estimated by a model based on the electronic structure of a semiconductor.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Anwar Iqbal, Usman Saidu, Farook Adam, Srimala Sreekantan, Noorfatimah Yahaya, Mohammad Norazmi Ahmad, Rajabathar Jothi Ramalingam, Lee D. Wilson
Summary: Mesoporous TiO2-modified ZnO quantum dots were immobilised on a linear low-density polyethylene (LLDPE) polymer for photocatalytic degradation of tetracycline (TC) antibiotics. The hybrid film catalyst exhibited high removal efficiency of TC at pH 9 due to enhanced water uptake by LLDPE film and increased surface roughness. Formation of heterojunctions improved separation of photogenerated electron-hole pairs, while quantum confinement effect of QDs enhanced oxidation ability for efficient photodegradation.
Article
Chemistry, Physical
Milad Laghaei, Mohsen Ghasemian, Mahmoud Reza Ghandehari Ferdowsi, Juerg A. Schuetz, Lingxue Kong
Summary: This study investigates the fabrication of nanoporous composites of titanium-vanadium oxide using magnetron sputtering, electrochemical anodization, and annealing processes. The effect of varying vanadium sputtering power on the composite semiconductors and their photodegradation performance was studied. The results showed that the composite with the lowest vanadium content exhibited the highest degradation efficiency under solar-simulated irradiation due to its homogeneous vanadium dispersion and lower recombination possibility.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Physics, Applied
W. Ravisy, M. Richard-Plouet, B. Dey, S. Bulou, P. Choquet, A. Granier, A. Goullet
Summary: The study revealed a close relationship between the crystallinity and microstructure of TiO2 thin films with film thickness, roughness, and anatase content. The critical thickness for coalescence of large polycrystalline columns varied between continuous and pulsed modes, impacting the photocatalytic activity. The use of ellipsometry to determine this coalescence thickness provides a method to evaluate the influence of process parameters on TiO2 thin film characteristics.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
T. Arh, B. Sana, M. Pregelj, P. Khuntia, Z. Jaglicic, M. D. Le, P. K. Biswas, P. Manuel, L. Mangin-Thro, A. Ozarowski, A. Zorko
Summary: Evidence for a quantum spin liquid phase in NdTa7O19 is reported, with effective spin-1/2 degrees of freedom and Ising-like nearest-neighbour correlations stabilized by strong spin-orbit coupling, allowing spin excitations to persist at low temperatures.
Article
Materials Science, Coatings & Films
Benjamin Dey, Simon Bulou, William Ravisy, Nicolas Gautier, Mireille Richard-Plouet, Agnes Granier, Patrick Choquet
Summary: This article presents an innovative sequential deposition method that enables the deposition of self-cleaning TiO2 coatings on thermolabile substrates at low temperatures using chemical vapor deposition. It opens a new way for the application of photocatalytic coatings on heat-sensitive substrates.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Pierre-Antoine Dubos, Ameni Zaouali, Pierre-Yves Jouan, Mireille Richard-Plouet, Valerie Brien, David Gloaguen, Baptiste Girault
Summary: In this study, uniaxial tensile tests were conducted on nickel sheets with few grains across the thickness. It was found that surface treatment can significantly improve the mechanical performances of the nickel sheets by blocking dislocation movement.
MATERIALS LETTERS-X
(2022)
Article
Multidisciplinary Sciences
Matej Pregelj, Zurab Guguchia, Marie-Cecile de Weerd, Pascal Boulet, Stanislav Vrtnik, Janez Dolinsek
Summary: We report on the dynamics of a magnetic-field-driven antiferromagnetic-to-paramagnetic quantum phase transition in monocrystalline Ce3Al using transverse-field muon spin rotation (TF-mu SR) experiments down to a low temperature of approximately 80 mK. The research reveals that the fluctuations have the largest amplitude at the quantum critical point, as demonstrated by the maximum muon transverse relaxation rate at the critical field. The quantum fluctuations observed exhibit temperature independence in the average local magnetic field component and muon transverse relaxation rate within the investigated temperature range.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Issraa Shahine, Jean-Yves Mevellec, Mireille Richard-Plouet, Bernard Humbert, Pierre-Yves Tessier
Summary: This article introduces a SERS substrate consisting of stacked ultrathin nanoporous gold layers, which can be used to detect very low concentrations of molecules in liquids or gases, and achieves a reproducible and robust SERS response at extremely low detection limits. The study also reveals the role of gold ligaments inside nanoporous layers, resulting in an increase in the size of the active SERS area.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Physics, Applied
S. Chouteau, M. Mitronika, A. Goullet, M. Richard-Plouet, L. Stafford, A. Granier
Summary: Mist-assisted methods in plasma deposition of high-quality thin films have recently gained attention, but little is known about plasma interactions with misted colloidal solutions. Time-resolved optical diagnostics were used to study the deposition of TiO2-SiO2 nanocomposite thin films in low-pressure oxygen-argon plasmas. The presence of nanoparticles in misty plasma effects were dominated by plasma droplets, not plasma-nanoparticle interactions. Subsequent matrix-rich and nanoparticle-rich deposition steps were confirmed using in situ spectroscopic ellipsometry.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Hind Lamkaouane, Hajar Ftouhi, Mireille Richard-Plouet, Nicolas Gautier, Nicolas Stephant, Mimoun Zazoui, Mohammed Addou, Linda Cattin, Jean Christian Bernede, Yamina Mir, Guy Louarn
Summary: In this study, MoO3:MoS2 hybrid thin layers were synthesized through partial oxidation of MoS2 under darkness conditions. Liquid-phase exfoliation was used to achieve uniform MoS2 nanoflakes and high reproducibility of results. XPS analyses confirmed the presence of MoO3, MoS2, and MoOxSy in the hybrid layer, while optical absorbance showed redshifted absorption peaks and new peaks in the near-infrared region.
Article
Nanoscience & Nanotechnology
Maria Anagnostopoulou, Areti Zindrou, Thomas Cottineau, Andreas Kafizas, Clement Marchal, Yiannis Deligiannakis, Valerie Keller, Konstantinos C. Christoforidis
Summary: This work reports the development of tunable organic/inorganic heterojunctions comprised of cobalt oxides (Co3O4) and modified carbon nitride (CN), targeting on optimizing their response under UV-visible irradiation. The study highlights the importance of MOF structures used as precursors in forming advanced materials and the stepwise functionalization of the individual parts in nanocomposites for the development of materials with superior activity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
J. Trahan, J. Profili, G. Robert-Bigras, M. Mitronika, M. Richard-Plouet, L. Stafford
Summary: This study investigates the effect of plasma treatment and thermal annealing on the morphology and composition of silver nanoparticle thin films. The results show that both treatments result in a decrease in isolated nanoparticles and the formation of polygonal structures with sharp corners and edges. The main absorption band of the silver nanoparticles experiences a redshift after treatment, and surface oxidation occurs. Only the plasma-exposed samples exhibit a significant increase in the surface-enhanced Raman scattering signal. Large-scale micrometer domains with sharp corners and edges control the surface-enhanced Raman scattering signal.
Article
Chemistry, Physical
Clement Marchal, Caroline Mary, Leila Hammoud, Qingyang Xi, Joumana Toufaily, Tayssir Hamieh, Luka Suhadolnik, Paolo Fornasiero, Christophe Colbeau-Justin, Valerie Caps, Thomas Cottineau, Valerie Keller
Summary: Au/TiO2 photocatalysts were studied and compared for gas phase reduction of CO2. The nature of the TiO2 support was found to significantly affect the performance of the catalyst. Among the studied catalysts, the 0.84 wt.% Au/TiO2 SG (Sol Gel) calcined at 400 degrees C exhibited the best performance, which could be attributed to its large surface area, high density of exposed (101) anatase TiO2 facets, and oxygen vacancies acting as reactive defects sites.
Article
Materials Science, Coatings & Films
Aissatou Diop, Danielle Ngoue, Amine Mahammou, Babacar Diallo, Beatrice Plujata, Angelique Bousquet, Thierry Sauvage, Sebastien Quoizola, Mireille Richard-Plouet, Jonathan Hamon, Audrey Soum-Glaude, Eric Tomasella, Laurent Thomas
Summary: WSiC:H coatings were prepared by reactive magnetron sputtering in an Ar/Si(CH3)4 plasma assisted by ECR microwave sources. These coatings have great potential for optical or mechanical applications. The development of these coatings is based on the correlation between in-situ diagnostics of the reactive plasma phase and the characterization of the resulting coatings. Optical emission spectroscopy identified a precursor flow rate range where W particles can be favored in the reactive plasma, facilitating the formation of composite coatings with a SiC:H matrix containing W-containing particles or aggregates. Material characterization techniques, like Scanning Electron Microscopy, Ion Beam Analysis, and X-ray Photoelectron Spectroscopy, were used to study the influence of the plasma phase on the microstructure and chemical composition of the deposited materials.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
J. Khatua, M. Pregelj, A. Elghandour, Z. Jaglicic, A. Elghandour, R. Klingeler, A. Zorko, P. Khuntia
Summary: Frustration-induced strong quantum fluctuations, spin correlations, and interplay between competing degrees of freedom are important factors in the formation of exotic states with fractional excitations in quantum materials. In this study, it was found that the rare-earth-based two-dimensional magnetic lattice Ba3RB9O18 possesses a perfect triangular lattice structure with localized R3+ spins showing pseudospin Jeff = 1/2 degrees of freedom and weak antiferromagnetic interactions. Crystal electric field calculations further suggest the presence of higher-crystal-electric-field states and a small gap between the ground and excited Kramers doublets.
Article
Materials Science, Multidisciplinary
Urelle Biapo, Valerie Keller, Philippe Bazin, Thomas Cottineau
Summary: The development of a gas-phase detector for organophosphorus molecules was achieved through the chemical modification of resonant microcantilever surfaces with TiO2 nanorods using a solvothermal synthesis method. Functionalizing the TiO2 sensor with amine terminated molecules resulted in a significantly higher sensing response. In situ IR analysis revealed varying strengths of hydrogen bonding between DMMP and the TiO2 surface at room temperature.
MATERIALS ADVANCES
(2022)
Article
Materials Science, Multidisciplinary
M. Pregelj, A. Zorko, D. Arcon, M. Klanjsek, N. Jansa, P. Jeglic, O. Zaharko, S. Kraemer, M. Horvatic, A. Prokofiev
Summary: In this study, a comprehensive investigation of β-TeVO4 using nuclear magnetic resonance technique reveals the dynamic nature of spin-density-wave (SDW) and spin-stripe phases in this material. In the high-field phase, the arrangement of magnetic moments is similar to that of the SDW phase, possibly stabilized by magnetic anisotropy.
