Article
Optics
Yugbodh Patle, Nameeta Brahme, D. P. Bisen, Tripti Richhariya, Ekta Chandrawanshi, Anil Choubey, Manju Tiwari
Summary: In this study, Ba2ZnSi2O7 (BZS) phosphor doped with Dysprosium (Dy3+) was successfully synthesized using a solid-state reaction method. The prepared phosphor exhibited efficient blue and yellow emissions under UV excitation, with the optimum concentration for Dy3+ ion at 2 mol%. The emission color was confirmed to have been tuned with the incorporation of Dy3+ ion in the BZS samples, as shown by the CIE diagram.
Article
Materials Science, Multidisciplinary
S. Vidya Saraswathi, Nimitha S. Prabhu, Karunakara Naregundi, M. I. Sayyed, M. S. Murari, Aljawhara H. Almuqrin, Sudha D. Kamath
Summary: The present study investigates the thermoluminescence and luminescence characteristics of Ca2Al2SiO7:Dy3+ phosphors prepared via combustion method. The results show that these phosphors are suitable for high dosimetry applications.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
A. R. Kadam, Girish C. Mishra, S. J. Dhoble
Summary: The main focus of this work is the thermoluminescence study of RE3+ (RE3+ = Eu3+ and Dy3+) activated CaTiO3 phosphors, with trapping parameters determined through various methods. XRD, FT-IR, and SEM were used to analyze the structure and morphology of the samples, which were found to be crystallized well. The results indicate that both phosphors have potential for thermoluminescence dosimetry.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Materials Science, Ceramics
M. Oglakci, Z. G. Portakal-Ucar, S. Akca-Ozalp, V. Correcher, J. F. Benavente, M. Sonsuz, N. Can, Y. Z. Halefoglu, M. Topaksu
Summary: Ce3+ doped LaB3O6 phosphors were synthesized using the combustion method, and characterized by X-ray diffraction patterns and TL glow curves. The results showed that LaB3O6:Ce3+ (1%) had a feasible dose response linearity and stable dose peak intensity.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
A. Vidya Saraswathi, Karunakara Naregundi, M. S. Murari, M. I. Sayyed, Nouf Almousa, Sudha D. Kamath
Summary: This study focuses on the thermoluminescence characteristics and trap parameter analysis of Sr2Al2SiO7:Dy3+ phosphors prepared by the low-temperature combustion method. The results show that the energy gap decreases and the optimum emission performance is obtained at a doping concentration of 3 mol% Dy3+. Additionally, the phosphors exhibit high sensitivity to gamma radiation and can be used as gamma dosimeters in the range of 3 Gy to 250 Gy.
CERAMICS INTERNATIONAL
(2022)
Article
Spectroscopy
Maneshwar Thakur, Ankush Vij, Fouran Singh, Vir Singh Rangra
Summary: This study investigates the structural and luminescent properties of zirconium dioxide synthesized via the solid-state combustion method. The results show that the synthesized zirconium dioxide mainly exhibits a tetragonal structure, with a minor monoclinic phase observed in some samples. The sample with a 1:1 nitrate-fuel ratio demonstrates a more pronounced overall thermoluminescence intensity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Optics
ChJ. Salas-Juarez, S. E. Burruel-Ibarra, M. I. Gil-Tolano, A. Perez Rodriguez, F. Romo-Garcia, A. R. Garcia-Haro, F. Brown, M. Yacaman-Valdez, J. L. Iriqui-Razcon, M. Martinez-Gil, R. Melendrez
Summary: In this study, we synthesized ZrO2:Tb3+ samples via a conventional solid-state reaction and investigated their Persistent Luminescence (PLUM) and performance in radiation dosimetry. X-ray diffraction confirmed the formation of monoclinic phase ZrO2 and the presence of Tb3+ ions and Tb2O3 in the samples. The PLUM response of the ZrO2:Tb3+ 1% sample was measured for 600 s after exposure to beta particle irradiation in the dose range of 0.5 to 256 Gy. The integrated area of the PLUM decay curves showed a sublinear dependence within the dose range of 0.5 to 64 Gy. The TL glow curve of the ZrO2: Tb3+ 1% sample exhibited two maxima at 79 and 150 degrees C, indicating that trapping states associated with the 79 degrees C maximum are responsible for the PLUM emission at room temperature. Computational deconvolution analysis revealed that the 79 degrees C maximum consisted of two traps with first-order kinetics. These results suggest that the ZrO2:Tb3+ 1% sample holds potential as a dosimeter for beta particle irradiation.
JOURNAL OF LUMINESCENCE
(2023)
Article
Materials Science, Multidisciplinary
Tripti Richhariya, Nameeta Brahme, D. P. Bisen, T. Badapanda, Anil Choubey, Yugbodh Patle, Ekta Chandrawanshi
Summary: The present study investigates the photoluminescence, thermoluminescence, and mechanoluminescence behavior of Ba2Al2SiO7: xDy(3+) (x = 1-4 mol%) phosphor synthesized via solid-state reaction method. The results suggest that the phosphor may serve as a potential candidate for low UV dosimetry and damage sensor applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Physical
C. M. Mehare, N. S. Dhoble, Chandan Ghanty, S. J. Dhoble
Summary: The study reported the synthesis of Dy(3+)-activated CaAl2Si4O12 phosphor using combustion techniques, showing excellent luminescence performance suitable for white light emitting diodes. Thermoluminescence characterization indicated potential applications of the phosphor.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Physics, Condensed Matter
Latief Mohi Ud Din, Umer Mushtaq, Irfan Ayoub, Vishal Sharma, H. C. Swart, Vijay Kumar
Summary: This article reports the structural, morphological, and optical properties of Dy3+-activated ZrO2 phosphors synthesized using the sol-gel technique. The results show that the synthesized phosphors exhibit a stable monoclinic structure with efficient photoluminescence, making them suitable for white light-emitting diode applications.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Physical
Abhijeet R. Kadam, Samiksha B. Dhoble, Girish C. Mishra, A. D. Deshmukh, S. J. Dhoble
Summary: In this study, Dy3+ ion-doped SrYAl3O7 phosphors were prepared using a solution combustion route and showed potential for near-ultraviolet excitation in LED lighting. Photoluminescence characterization revealed emission peaks in the blue and yellow regions of the spectrum. The crystal structure and morphology of the phosphor sample were analyzed, and thermoluminescence studies were performed to calculate trapping parameters.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Analytical
P. Diana, Subramanian Saravanakumar, D. Sivaganesh, V. Sivakumar, Yang Li, S. Sebastian, Ji-Man Kim, Padmanathan Karthick Kannan, L. Sangeetha, Vijayendran K. K. Praneeth
Summary: The effect of calcination temperature on the structural and thermoluminescent properties of Zn2SiO4 materials was investigated. Zn2SiO4 was prepared using a hydrothermal route and calcinated at different temperatures. The TL data of all samples showed two peaks, with the Zn2SiO4 sample calcinated at 900 degrees C exhibiting the optimal TL intensity. This material could be used for high-temperature dosimetry applications.
Article
Chemistry, Analytical
Sansar Chand, Rohit Mehra, Vibha Chopra
Summary: This study investigates the thermoluminescence (TL) properties of Ca10K(PO4)(7):Dy phosphor synthesized using a wet chemical method. The results confirm the formation of the desired crystalline phase and reveal the presence of polyhedrons and agglomerations on the surface. The TL response is found to be optimal at 5 mol% Dy doping concentration and a heating rate of 5 °C/s.
Article
Materials Science, Ceramics
Runze Li, Huahui Li, Chengkang Chang, Zhongmei Sun
Summary: A new Eu2+: NaBa4(BO3)(3) phosphor synthesized using a conventional solid state method exhibits bright and persistent yellow luminescence. The luminescence is divided into two emissions due to the two coordination forms of Eu2+ cations in the crystal structure. Optimized doping concentrations were determined for Eu2+, Dy3+, Ho3+, and Nd3+. Among the synthesized phosphors, the 2 at%Eu2+/3 at%Ho3+: NaBa4(BO3)(3) sample shows the best performance with higher initial brightness and longer lifetime.
CERAMICS INTERNATIONAL
(2022)
Article
Optics
Engin Aslar, Eren Sahiner
Summary: This study investigated the TL dosimetric properties of CaF2:Dy dosimeters under different irradiation sources, revealing that the TL glow curve shape and trap parameters remain unchanged regardless of the source and dose value. Additionally, the impact of thermal quenching on TL peaks and the variation in TL intensity under light-induced effect were studied.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Multidisciplinary
Janet A. Elias, Luis A. Diaz-Torres, Christian Gomez-Solis, Eduardo Montes, Gerardo Toscano, Miguel A. Vallejo
Summary: Evidence shows that the presence of copper nanoparticles (CNP) in lithium borate glasses doped with Ce3+ and Tm3+ reduces photo-darkening. This reduction is attributed to the plasmon effect produced by the CNP, enhancing the effect of Ce3+ in preventing photo-darkening in the glass samples.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Karla Santacruz-Gomez, Rodrigo Melendrez, Marlen Licerio-Ramirez, Ana L. Gallego-Hernandez, Martin Pedroza-Montero, Ratnesh Lal
Summary: The actin cytoskeleton plays a crucial role in cancer cell metastasis. Plasmonic photothermal therapy mediated by PEGylated gold nanorods can disrupt the cytoskeleton integrity of HeLa cells and induce cell death through apoptosis.
JOURNAL OF NANOPARTICLE RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Luis A. Val-Felix, Tomas J. Madera-Santana, Suresh D. Pillai, H. Soto-Valdez, Dora E. Rodriguez Felix, P. Quintana-Owen, E. Peralta, R. Melendrez-Amavizca, Guillermo Martinez-Colunga
Summary: LLDPE is widely used in food packaging, but its accumulation in the environment leads to plastic pollution and harmful effects on biodiversity. This study formulated 12 types of LLDPE films with additives and thermoplastic starch, and found that gamma irradiation and accelerated weathering could increase the crystallinity of the films under certain conditions, but the biodegradability was affected by the treatment methods.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Maria Claudia Calderon-Martinez, Maria Ines Gil-Tolano, Epifanio Cruz-Zaragoza, Rodrigo Melendrez, Valery Chernov, Marcelino Barboza-Flores
Summary: In this study, the thermal annealing effect on the TL properties of commercial HPHT microdiamonds was investigated. The results showed that annealing at 1000 degrees Celsius improved the TL performance and reduced the TL fading.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Applied
C. R. Garcia, J. Oliva, D. Chavez, E. Viesca-Villanueva, Y. Tejada-Velasquez, A. Mtz-Enriquez, L. A. Diaz-Torres
Summary: This study reports on the structural, morphological and photocatalytic properties of Sr2CeO4 and Ni-doped Sr2CeO4 powders synthesized by a combustion method. The results show that the SCO powder doped with 1 mol% of Ni achieved 100% degradation of CR dye under solar irradiation, and had the highest production of inorganic carbon. Furthermore, the absorption of light in the visible region was enhanced with increasing Ni concentration, but decreased at higher concentrations.
TOPICS IN CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Maria Claudia Calderon-Martinez, Maria Ines Gil-Tolano, Sofia Navarro-Espinoza, Rodrigo Melendrez, Valery Chernov, Marcelino Barboza-Flores
Summary: In this study, commercial high-pressure, high-temperature microdiamond powders were characterized and found to possess optical, structural, and surface properties comparable to high-quality synthetic diamond. The findings suggest potential applications in biosensors and radiation detection and dosimetry.
Article
Chemistry, Analytical
Sandeep Surendra Panikar, Dana Cialla-May, Tina Haass, Uwe Huebner, Ana L. Gonzalez, Pedro Salas, Juergen Popp
Summary: In this study, a simple and inexpensive method of stamping was used to assemble approximately 30 nm gold nanoparticles (AuNPs) on electron beam lithography (EBL) substrates, resulting in a highly regular arrangement of AuNPs in the nanochannels. The groove width of the gratings in the stamping method was found to play a critical role in linearly arranging the AuNPs on the EBL substrates. The SERS efficiency of the substrate was evaluated by testing rhodamine 6G and brilliant blue with a limit of detection (LOD) of 10.2 nM. Furthermore, the detection of the chemotherapy drug methotrexate (MTX) in human blood serum was performed with an LOD of 13.7 nM, illustrating its potential in therapeutic drug monitoring (TDM) and clinical translation.
VIBRATIONAL SPECTROSCOPY
(2023)
Article
Environmental Sciences
Marlene Vargas-Zamarripa, Aura A. Rivera, Uriel Sierra, Pedro Salas, Alma H. Serafin-Munoz, Gonzalo Ramirez-Garcia
Summary: This work reports the development of a sensitive SERS substrate based on graphene oxide (GO) and quantum-sized ZrO2 nanoparticles (GO/ZrO2) for label-free determination of methyl parathion (MP). The substrate exhibited enhanced light-matter interactions and strong SERS effects due to the effective charge transfer mechanism. The GO/ZrO2-based substrates showed an enhancement factor over 5 times higher than platforms without GO, with a detection limit of 0.12 μM and excellent repeatability.
Article
Materials Science, Ceramics
Janet Elias, Luis A. Diaz-Torres, Gemma Perez-Cuellar, Pablo Reyes-Hernandez, Eduardo Montes, Miguel Vallejo
Summary: A family of sixteen lithium diborate glass samples doped with Er3+, Yb3+, Dy+3 and containing Ag and Cu were synthesized using the melt-quenching technique. SEM micrograph confirmed the non-crystalline nature of the samples. Physical properties such as density, molar volume, and boron-boron separation were determined. UV-Vis-IR absorption spectra showed characteristic bands of the rare earths used, with increased metallic nanoparticle concentration leading to enhanced absorption. The optical energy band gap of the samples was estimated using the Tauc's plot method. Emission spectra collected at different temperatures indicated that the addition of metallic nanoparticles (Ag and Cu) stabilized the emission of the samples as temperature increased.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Physical
Mariana Villagomez-Mora, Luis A. Diaz-Torres, Laura E. Puentes-Prado, Christian Gomez-Solis
Summary: This study focuses on the hydrogen production of KBiO3 and NaBiO3. The two compounds were characterized using various techniques such as XRD, SEM, UV-vis spectroscopy, voltammetry, and chronoamperometry. It was found that KBiO3 has a cubic crystalline structure while NaBiO3.2H2O has a rhombohedral crystal structure. KBiO3 exhibited a higher photocatalytic efficiency and hydrogen evolution rate compared to NaBiO3 under UV and visible light radiation without sacrificial agents.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Polymer Science
Jean Flores-Gomez, Victor Hugo Romero-Arellano, Milton Vazquez-Lepe, Alvaro de Jesus Martinez-Gomez, Juan Morales-Rivera
Summary: In this paper, a model for Cr (VI) removal and optimization was developed using a novel aerogel material, chitosan-resole CS/R aerogel. The aerogel was fabricated using freeze-drying and thermal treatment, which ensured a stable network structure despite non-uniform ice growth. Computational techniques were used to model and optimize the adsorption capacity of the aerogel. The developed model successfully described the process and was optimized to achieve superior Cr (VI) removal under specific conditions.
Article
Materials Science, Multidisciplinary
P. Salas, L. A. Diaz-Torres, L. Ojedac, J. Oliva
Summary: Bi2Ti2-xZrxO7:Er3+,Yb3+ phosphors were synthesized with different content of Zr by combusion method at 550°C, producing a mixture of Bi2Ti2O7/Bi4Ti3O12 phases. After increasing the synthesis temperature to 1000°C, a pure Bi2Ti2O7 phase was obtained as well as porous coalesced microparticles. The color emission of the phosphors can be tuned from green to yellow-red or vice versa by increasing the Zr content or synthesis temperature.
Article
Nuclear Science & Technology
Ch J. Salas-Juarez, M. A. Ugalde-Valdes, J. Guzman-Mendoza, D. Nolasco-Altamirano, M. Martinez-Gil, C. E. Gomez-Dominguez, C. A. Guarin, R. Melendrez, T. Rivera-Montalvo
Summary: This work reports the persistent luminescence properties and performance of the commercial LiF:Mg,Ti (TLD-100) dosimeter in dosimetry applications. The study reveals that the TLD-100 dosimeter exhibits a linear increase in persistent luminescence intensity with increasing irradiation dose in the range of 0.22-32 Gy, without saturation. The TLD-100 dosimeter shows good repeatability and the advantage of fast post-irradiation measurements.
RADIATION MEASUREMENTS
(2023)
Article
Environmental Sciences
Ernesto Valadez-Renteria, Rafael Perez-Gonzalez, Christian Gomez-Solis, Luis Armando Diaz-Torres, Armando Encinas, Jorge Oliva, Vicente Rodriguez-Gonzalez
Summary: The structural, morphological, and photocatalytic properties of stretchable composites made with carbon nanotubes (CNTs), silicon rubber, and Ni@TiO 2 :W nanoparticles (TiWNi NPs) were studied. The TiWNi NPs decorated the surface of CNT fibers in a preferential direction. The stretchable CNT + TiWNi composites showed enhanced photocatalytic degradation of diclofenac (DCF) drug, with a degradation percentage increasing from 97.1% to 100% through stretching.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
