ListarDivisión de Nanociencias y Materiales por tema "QUÍMICA"

Mostrando ítems 1-20 de 105

    • A functional SiO2-TiO2 mesoporous assembly designed for the controlled release of carvacrol 

      Esquivel Castro, Tzipatly Angelica; Robledo Trujillo, Brianda Gabriela; Oliva Uc, Jorge Roberto; Rosu Barbus, Haret-Codratian.; Rodríguez González, Vicente (Elsevier, 2023)
      Mesoporous composites can be useful for the gentle release of biocides and fertilizers. Here, we study the structural, morphological, and drug-delivery advantages of SiO2-TiO2 (PST) particles synthesized by a hydrothermal ...

    • A simple method for fabrication of antifuse WORM memories 

      Ávila Niño, José Antonio; Reyes Reyes, Marisol; Núñez Olvera, Oscar Fernando; López Sandoval, Román (Elsevier, 2018)
      "A write-only-read-many (WORM) memory device was obtained by irradiating, with a commercial ultraviolet-ozone (UVO) lamp, the aluminium bottom electrode in an Al/AlOx-UVO/Al configuration. The formation of conductive paths ...

    • Ag-coated heterostructures of ZnO-TiO2/delaminated montmorillonite as solar photocatalysts 

      Belver, Carolina; Hinojosa Reyes, Mariana; Bedia, Jorge; Tobajas Vizcaino, Montserrat; Álvarez, María Ariadna; Rodríguez González, Vicente; Rodríguez Jiménez, Juan José (MDPI, 2017-08)
      "Heterostructures based on ZnO-TiO2/delaminated montmorillonite coated with Ag have been prepared by sol–gel and photoreduction procedures, varying the Ag and ZnO contents. They have been thoroughly characterized by XRD, ...

    • Aleación de Disprosio-Níquel en forma de cinta y método de síntesis 

      Sánchez Llamazares, José Luis; Sánchez Valdés, Cesar Fidel (2008-07)
      "La presente invención describe y reclama una nueva aleación del compuesto intermetálico DyNi2 en forma de cinta. Asimismo, se describe una cinta útil para la refrigeración magnetocalórica a bajas temperaturas formada por ...

    • Analytical magnetostatic model for 2D arrays of interacting magnetic nanowires and nanotubes 

      Velázquez Galván, Yenni Guadalupe; Encinas Oropesa, Armando (Royal Society of Chemistry, 2020)
      "A fully analytical model to describe the magnetostatic properties of these 2D nanocylinder arrays (tubes and wires) is presented. The model allows calculating the components of the effective demagnetizing field as a ...

    • Análisis de transferencia de carga electrónica en el sistema Au15 –(SPh)m, m=1, …, 6. 

      Hernández Vázquez, Esther Elena (2015-06)
      "En la década de los 90's se realizaron nuevos y diversos estudios en agregados metálicos de Au y Ag con un número pequeño de átomos con estructuras de capas llenas de n electrones (donde 2=2, 4, 6, 8, 18, 34, 54, 92…), ...

    • Anharmonic contribution to the stabilization of Mg(OH)2 from first principles 

      Treviño, Patricia; Garcia Castro, Andrés Camilo; López Moreno, Sinhué; Bautista Hernández, Alejandro; Bobocioiu, Ema; Reynard, Bruno; Caracas, Razvan; Romero Castro, Aldo Humberto (2018)
      "Geometrical and vibrational characterization of magnesium hydroxide was performed using density functional theory. Four possible crystal symmetries were explored: P[3 with combining macron] (No. 147, point group −3), C2/m ...

    • As(V) removal capacity of FeCu bimetallic nanoparticles in aqueous solutions: the influence of Cu content and morphologic changes in bimetallic nanoparticles 

      Sepulveda, Pamela; Rubio, Maria Angélica; Baltazar Rojas, Samuel Eleazar; Rojas Nuñez, Javier; Sánchez Llamazares, José Luis; García García, Alejandra; Arancibia Miranda, Nicolas (Elsevier, 2018)
      "In this study, bimetallic nanoparticles (BMNPs) with different mass ratios of Cu and Fe were evaluated. The influence of the morphology on the removal of pollutants was explored through theoretical and experimental studies, ...

    • Carbon sponge-type nanostructures based on coaxial nitrogen-doped multiwalled carbon nanotubes grown by CVD using benzylamine as precursor 

      Muñoz Sandoval, Emilio; Cortés López, Alejandro Javier; Flores Gómez, Beatriz; Fajardo Díaz, Juan Luis; Sánchez Salas, Roque; López Urías, Florentino (2017)
      "Carbon sponges-type nanostructures (CSTN) based on coaxial nitrogen-doped multiwalled carbon nanotubes (CA-MWCNTs) were synthesized using the aerosol assisted chemical vapor deposition method involving the decomposition ...

    • Catalytic conversion of 5-hydroxymethylfurfural (5-HMF) over Pd-Ru/FAU zeolite catalysts 

      Ramírez Bocanegra, Nathalia; Rivera De la Rosa, Javier; Lucio Ortiz, Carlos Javier; Cubillas Gozález, Pablo; Greenwell, Hugh Christopher; Badillo Almaráz, Véronica Elizabeth; Sandoval Rangel, Ladislao; Alcántar Vázquez, Brenda Cecilia; Rodríguez González, Vicente; De Haro Del Rio, David Alejnadro (Elsevier, 2021)
      "We present this study on FAU-type zeolites were prepared varying the Si/Al ratio (4, 5 and 6) and crystallization time (4, 6 and 8?h) to produce a highly pure and homogeneous material with enhanced surface area values. ...

    • Cement pastes and mortars containing nitrogen-doped and oxygen-functionalized multiwalled carbon nanotubes 

      Martínez Alanis, Mauricio; López Urías, Florentino (Hindawi, 2016)
      "Cement pastes and mortars based on ordinary Portland cement containing nitrogen-doped multiwalled carbon nanotubes (MWCNT-Nx) or oxygen-functionalized multiwalled carbon nanotubes (MWCNT-Ox) are investigated. To incorporate ...

    • Comparison of two synthesis methods on the preparation of Fe, N-Co-doped TiO2 materials for degradation of pharmaceutical compounds under visible light 

      Aba Guevara, Cinthia Guadalupe; Medina Ramírez, Iliana Ernestina; Hernández Ramírez, Aracely; Jáuregui Rincón, Juan; Lozano Álvarez, Juan Antonio; Rodríguez López, José Luis (Elsevier, 2017)
      "In this work, we report the synthesis, characterization and photocatalytic evaluation of visible light active iron-nitrogen co-doped titanium dioxide (Fe3+-TiO2?xNx) nanostructured catalyst. Fe3+-TiO2?xNx was synthesized ...

    • Compressibility, microcalorimetry, elastic properties and EELS of rhenium borides 

      Neun, Christopher; Petermüller, Benedikt; Bayarjargal, Lkhamsuren; Morgenroth, Wolfgang; Ávalos Borja, Miguel; Silva Pereyra, Héctor Gabriel; Spahr, Dominik; Schmuck, Felix; Milman, Victor; Huppertz, Hubert; Winkler, Bjoern (Elsevier, 2018)
      "Based on synchrotron X-ray diffraction on phase-pure samples, we revised the bulk moduli of the rhenium borides Re7B3 (B-0 (Re7B3) = 391(5) GPa) and orthorhombic Re3B (B-0 (orthorhombic Re3B) = 393(4) GPa) and determined ...

    • Concreto reforzado con nanotubos de carbono dopados con oxígeno y dopados con nitrógeno 

      Martínez Alanis, Mauricio (2015-05)
      "En éste trabajo se describen los efectos de la incorporación de nanotubos de carbono multipared en mezclas de morteros hidráulicos basados en cemento gris tipo Portland. Los nanotubos de carbono fabricados presentan ...

    • Control of the asymmetric growth of nanowire arrays with gradient profiles 

      Patiño Cárdenas, Juan; Encinas Oropesa, Armando; Ramírez Villegas, Rossana; De la Torre Medina, Joaquín (Royal Society of Chemistry, 2021)
      "A novel electrochemical methodology for the growth of arrays of Ni and Co nanowires (NWs) with linear and non-linear varying micro-height gradient profiles (?HGPs), has been developed. The growth mechanism of these ...

    • Correlation between crystallographic and microstructural features and low hysteresis behavior in Ni50.0Mn35.25In14.75 melt-spun ribbons 

      Yan, Haile; Sánchez Valdés, Cesar Fidel; Zhang, Yudong; Sánchez Llamazares, José Luis; Li, Zongbin; Yang, Bo; Esling, Claude; Zhao, Xiang; Zuo, Liang (Elsevier, 2018)
      "In this work, crystallographic, microstructural and magnetocaloric investigations were performed on textured Ni50Mn35.25In14.75 melt-spun ribbons with low thermal (6?K) and magnetic-field induced hysteresis (?0.73?J?kg?1 ...

    • División de Materiales Avanzados-IPICyT* 

      Flores Zúñiga, Horacio (UNAM, 2016)
      "En este trabajo se describen las actividades en nanociencias y nanotecnologías (NyN) que se llevan a cabo en la División de Materiales Avanzados del Instituto Potosino de Investigación Científica y Tecnológica A.C. (IPICyT). ...

    • Effect of ball to powder ratio on the mechanosynthesis of Re2C and its compressibility 

      Martínez García, Alfredo; Navarro Martínez, Ana Karín; Neun, Christopher; Bayarjargal, Lkhamsuren; Morgenroth, Wolfgang; López Vázquez, Erick; Ávalos Borja, Miguel; Winkler, Bjoern; Juárez Arellano, Erick Adrián (Elsevier, 2019)
      "The mechanosynthesis of hexagonal rhenium carbide (Re2C) from the elements is explored as a function of the balls to powder ratio (BPR). Burgios's equation has been used to calculate the accumulated energy (Delta E-accum) ...

    • Effect of Mg as impurity on the structure of mesoporous γ-Al203: efficiency as catalytic support in HDS of DBT 

      Romero Toledo, Rafael; Bravo Sánchez, Mariela; Rangel Porras, Gustavo; Fuentes Ramírez, Rosalba; Pérez Larios, Alejandro; Medina Ramírez, Adriana; Martínez Rosales, Merced (Walter de Gruyter GmbH, 2018)
      "This work shows the study of two alumina materials synthesized from aluminum sulfate with different purity by hydrolysis-precipitation route. The main difference between the aluminum salt precursors was the lower cost of ...

    • Effect of silicon dots into coconut fibers on the nucleating capacity of β-crystals of polypropylene 

      Del Angel Monroy, Mayra; Escobar Barrios, Vladimir Alonso; Peña Juárez, Mariana; Camarena Rangel, Rodrigo; Montes Zavala, Isidro; González Calderon, José Amir; Pérez, Elías (Universidad Autónoma Metropolitana, 2021)
      "Three concentrations of sodium hydroxide (3, 5, and 7% based on a composition by weight) and 2 reaction times (1 and 4 h) were used to treat coconut fiber. According to the results, the inclusion of treated fiber in polymer ...