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Ana Maria Diez Pascual   Dr.  University Educator/Researcher 
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Ana Maria Diez Pascual published an article in April 2019.
Research Keywords & Expertise
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0 Carbon Nanotubes
0 Crystallization
0 Nanocomposites
0 Nanoparticles
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Top co-authors See all
Soledad Vera

40 shared publications

Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, Alcalá University, 28871 Alcalá de Henares, Madrid, Spain.

M. P. San Andres

24 shared publications

Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, Alcalá University, 28871 Alcalá de Henares, Madrid, Spain.

José Antonio Luceño-Sánchez

4 shared publications

Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, Alcalá University, 28871 Madrid, Spain

Camino Gonzalez-Arellano

2 shared publications

Departamento de Química Orgánica y Química Inorgánica, Facultad de Ciencias, University of Alcalá, E-28871 Madrid, Spain.

Georgiana Maties

2 shared publications

Departamento de Química Orgánica y Química Inorgánica, Facultad de Ciencias, University of Alcalá, E-28871 Madrid, Spain

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Publication Record
Distribution of Articles published per year 
(2007 - 2019)
Total number of journals
published in
 
14
 
Publications See all
Article 0 Reads 0 Citations Nanoparticle Reinforced Polymers Ana María Díez-Pascual Published: 04 April 2019
Polymers, doi: 10.3390/polym11040625
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The beginning of nanomaterials and nanoscience dates back to 1959 when the Nobel laureate in Physics Richard Feynman gave the famous lecture entitled “There’s Plenty of Room at the Bottom
Article 0 Reads 0 Citations Materials for Photovoltaics: State of Art and Recent Developments José Antonio Luceño-Sánchez, Ana María Díez-Pascual, Rafael ... Published: 23 February 2019
International Journal of Molecular Sciences, doi: 10.3390/ijms20040976
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In recent years, photovoltaic cell technology has grown extraordinarily as a sustainable source of energy, as a consequence of the increasing concern over the impact of fossil fuel-based energy on global warming and climate change. The different photovoltaic cells developed up to date can be classified into four main categories called generations (GEN), and the current market is mainly covered by the first two GEN. The 1GEN (mono or polycrystalline silicon cells and gallium arsenide) comprises well-known medium/low cost technologies that lead to moderate yields. The 2GEN (thin-film technologies) includes devices that have lower efficiency albeit are cheaper to manufacture. The 3GEN presents the use of novel materials, as well as a great variability of designs, and comprises expensive but very efficient cells. The 4GEN, also known as “inorganics-in-organics”, combines the low cost/flexibility of polymer thin films with the stability of novel inorganic nanostructures (i.e., metal nanoparticles and metal oxides) with organic-based nanomaterials (i.e., carbon nanotubes, graphene and its derivatives), and are currently under investigation. The main goal of this review is to show the current state of art on photovoltaic cell technology in terms of the materials used for the manufacture, efficiency and production costs. A comprehensive comparative analysis of the four generations is performed, including the device architectures, their advantages and limitations. Special emphasis is placed on the 4GEN, where the diverse roles of the organic and nano-components are discussed. Finally, conclusions and future perspectives are summarized.
Article 1 Read 0 Citations Experience in the Use of Social Software to Support Student Learning in University Courses of Science and Engineering De... Ana María Díez-Pascual, Pilar García-Díaz, Rafael Peña-Capil... Published: 28 December 2018
Education Sciences, doi: 10.3390/educsci9010005
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A wiki is an easy-to-use online tool for teachers and students, as it is a collaborative website that provides the opportunity to develop and modify its content to every member in an interactive and fast way. This paper comparatively describes experiences in the implementation of wikis as voluntary activities in first-year courses in a degree in Chemistry and third-year courses in a degree in Telecommunication System Engineering. The main goal of using the wikis was to achieve collaboration among students to generate knowledge. The developed methodology was applied to the resolution of exercises, problems, and test questions, as well as to the elaboration of class notes and a bilingual glossary. The approach turned the students into active learners, increasing their interest in the course contents, promoting knowledge exchange among students and encouraging the self-management of their learning process. The role of the teacher was to provide feedback to the students in order to ensure the accuracy of the contents. Four different patterns were distinguished among the students according to their participation level in the wiki. The students who were most committed to the courses were also the most involved in the wikis, and the combination resulted in the students’ success. The results obtained for the degree in Chemistry were better than those of the degree in Telecommunication System Engineering, which was ascribed to the increased connection among the first-year students. The didactic strategy was very positive, although the percentage of participation in the wikis was somewhat low, in particular for the third-year students, who were more independent and self-organized. Initially, the number of wiki visits increased suddenly, and then moved to a long period of lower activity in the degree of Chemistry and lethargy in the degree of Telecommunication System Engineering. Therefore, it is desirable to introduce modifications in the approach, such as flexible and consensual planning with the students in order to ensure their full engagement.
Article 0 Reads 0 Citations Development of a Social Networking Platform as a Methodology for Teaching in the Degree of Chemistry Ana María Diez-Pascual, Pilar García Díaz, Rafael Peña Capil... Published: 29 October 2018
Proceedings, doi: 10.3390/proceedings2211363
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Wikis are often used to create collaborative websites that allow users to create and modify their content and structure in a simple and quick way; these characteristics make them an effective platform for collaborative writing on a given topic. This article illustrates the experience in the design of a wiki as an educational activity in a practical subject of the degree in Chemistry. This methodology has been used for the elaboration of a dictionary with the conceptual terms learned during the classes. The learning strategy has been constructive, even if the percentage of student participation has been scarce. Consequently, it is necessary to introduce modifications in the design of the activity in order to obtain more satisfactory results.
Article 0 Reads 0 Citations Design of Simulation Tools for Teaching in Photovoltaic Energy Engineering Ana Maria Diez-Pascual, Rafael Peña Capilla, Pilar García Dí... Published: 26 October 2018
Proceedings, doi: 10.3390/proceedings2211364
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Software tools are used to support the development of engineering projects in different fields, including the area of renewable energies (solar photovoltaic, thermal, wind, etc.). In the field of solar energy, there are commercial programs that allow sizing the installations and evaluating their performance. Some of the most representative are PVGIS, the Photovoltaic Geographical Information System, PVSYST, a tool designed by the Energy Group of the Institute of Environmental Sciences of the University of Genova, and Censol, developed by the Spanish Center for Solar Energy Studies. This paper describes different simulation tools developed at Alcalá University in order to teach photovoltaic energy engineering. A web application is compared to other tools, such as spreadsheets and applications in Matlab environment, developed by the authors. In all the cases, the tools are focused on learning project engineering.
Article 1 Read 0 Citations Synthesis and Characterization of Graphene Oxide Derivatives via Functionalization Reaction with Hexamethylene Diisocyan... Jose Antonio Luceño-Sánchez, Georgiana Maties, Camino Gonzal... Published: 23 October 2018
Nanomaterials, doi: 10.3390/nano8110870
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Graphene oxide (GO), the oxidized form of graphene, shows unique properties including high mechanical strength, optical transparency, amphiphilicity and surface functionalization capability that make it attractive in fields ranging from medicine to optoelectronic devices and solar cells. However, its insolubility in non-polar and polar aprotic solvents hinders some applications. To solve this issue, novel functionalization strategies are pursued. In this regard, this study deals with the preparation and characterization of hexamethylene diisocyanate (HDI)-functionalized GO. Different reaction conditions were tested to optimize the functionalization degree (FD), and detailed characterizations were conducted via elemental analysis, Fourier-transformed infrared (FT-IR) and Raman spectroscopies to confirm the success of the functionalization reaction. The morphology of HDI-GO was investigated by transmission electron microscopy (TEM), which revealed an increase in the flake thickness with increasing FD. The HDI-GO showed a more hydrophobic nature than pristine GO and could be suspended in polar aprotic solvents such as N,N-dimethylformamide (DMF), N-methylpyrrolidone (NMP) and dimethyl sulfoxide (DMSO) as well as in low polar/non-polar solvents like tetrahydrofuran (THF), chloroform and toluene; further, the dispersibility improved upon increasing FD. Thermogravimetric analysis (TGA) confirmed that the covalent attachment of HDI greatly improves the thermal stability of GO, ascribed to the crosslinking between adjacent sheets, which is interesting for long-term electronics and electrothermal device applications. The HDI-GO samples can further react with organic molecules or polymers via the remaining oxygen groups, hence are ideal candidates as nanofillers for high-performance GO-based polymer nanocomposites.
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