GO-TiO 2 as a Highly Performant Photocatalyst Maximized by Proper Parameters Selection

Aida M. Díez (), Marta Pazos, M. Ángeles Sanromán and Yury V. Kolen’ko
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Aida M. Díez: Nanochemistry Research Group, International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, 4715-330 Braga, Portugal
Marta Pazos: CINTECX, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, Universidade de Vigo, 36310 Vigo, Spain
M. Ángeles Sanromán: CINTECX, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, Universidade de Vigo, 36310 Vigo, Spain
Yury V. Kolen’ko: Nanochemistry Research Group, International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, 4715-330 Braga, Portugal

IJERPH, 2022, vol. 19, issue 19, 1-14

Abstract: The synthesis and characterization of novel graphene oxide coupled to TiO 2 (GO-TiO 2 ) was carried out in order to better understand the performance of this photocatalyst, when compared to well-known TiO 2 (P25) from Degussa. Thus, its physical-chemical characterization (FTIR, XRD, N 2 isotherms and electrochemical measurements) describes high porosity, suitable charge and high electron mobility, which enhance pollutant degradation. In addition, the importance of the reactor set up was highlighted, testing the effect of both the irradiated area and distance between lamp and bulb solution. Under optimal conditions, the model drug methylthioninium chloride (MC) was degraded and several parameters were assessed, such as the water matrix and the catalyst reutilization, a possibility given the addition of H 2 O 2 . The results in terms of energy consumption compete with those attained for the treatment of this model pollutant, opening a path for further research.

Keywords: titanium dioxide doping; graphene oxide; methylthioninium chloride; electrochemical characterization measurements; photodegradation; process and catalyst characterization (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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