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      Seguimiento de una reacción fotocatalítica modelo expuesta a la propagación de la superposición de dos vórtices ópticos con momento angular orbital entero definido y opuesto, por medio de espectroscopía UV-VIS Translated title: Monitoring of a photocatalytic reaction pattern exposed to the propagation of the superposition of two optical vortices with defined and opposite orbital angular momentum, by UV-VIS spectroscopy

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          Abstract

          Resumen El presente artículo realiza un análisis espectral de un conjunto de ensayos efectuados sobre una reacción foto catalítica modelo basada en la actividad de fenol disuelto en agua con oxido de titanio dopado como catalizador e irradiada con un haz de luz coherente, cuyo frente de onda corresponde a la superposición de dos vórtices ópticos con momento angular orbital entero definido de sentido opuesto. Como primera instancia se describe la arquitectura opto electro-química empleada en el estudio, luego se selecciona por medio de un barrido discreto de haces propagados de 405 y 450 nm, la longitud de onda adecuada para proyectar los vórtices ópticos sobre la muestra. Por último se realiza el tratamiento y análisis de las señales adquiridas a través de espectrofotometría UV de las muestras irradiadas con las distribuciones espaciales de luz de interés controladas por un holograma generado por computador.

          Translated abstract

          Abstract This paper presents a spectral analysis of tests performed on a photocatalytic model reaction based on phenol activity diluted in water with doped titanium oxide using as catalyst and irradiated with a coherent beam of light, whose wave front is the superposition of the optical vortices with integer orbital angular momentum opposite. Primarily, the architecture of the system optoelectronics and chemistry related is described, then is selected by discrete test of beams propagated the appropriate wavelength (405 and 450 nm) to project optical vortices over the sample. Finally, the processing and analysis of the signals acquired by a spectrophotometry UV, corresponding to the samples irradiated with the controlled spatial distributions of light by hologram generated computer.

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          Most cited references11

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          Photo-catalytic conversion of methane into methanol using visible laser

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            Synthesis of nano-WO3 and its catalytic activity for enhanced antimicrobial process for water purification using laser induced photo-catalysis

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              Selective Laser Photocatalysis of Bromine Reactions: Laser light excites gaseous bromine molecules to single bound quantum states near the dissociation continuum

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                racefn
                Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales
                Rev. acad. colomb. cienc. exact. fis. nat.
                Academia Colombiana de Ciencias Exactas, Físicas y Naturales (Bogotá, Distrito Capital, Colombia )
                0370-3908
                June 2018
                : 42
                : 163
                : 194-199
                Affiliations
                [1] Bucaramanga Santander orgnameUniversidad Industrial de Santander orgdiv1Grupo de Investigación en Óptica y Tratamiento de Señales Colombia
                [2] Bucaramanga Santander orgnameUniversidad Industrial de Santander orgdiv1Centro de Investigación en Catálisis Colombia
                Article
                S0370-39082018000200194
                10.18257/raccefyn.615
                d72a294f-cab3-4e5c-9d16-0e541ceb476f

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 07 February 2018
                : 25 June 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 12, Pages: 6
                Product

                SciELO Colombia

                Categories
                Ciencias físicas

                Fotocatálisis,Absorbancia,Superposition,Orbital Angular Momentum of Light,Photocatalysis,Absorbance,Superposición,Momento Angular Orbital

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