Solvothermal Crystallization of Ag/Ag<sub>x</sub>O-AgCl Composites: Effect of Different Chloride Sources/Shape-Tailoring Agents

Zsejke-Réka Tóth; Saurav Kumar Maity; Tamás Gyulavári; Enikő Bárdos; Lucian Baia; Gábor Kovács; Seema Garg; Zsolt Pap; Klara Hernadi

doi:10.3390/catal11030379

Catalysts (Mar 2021)

Solvothermal Crystallization of Ag/Ag<sub>x</sub>O-AgCl Composites: Effect of Different Chloride Sources/Shape-Tailoring Agents

Zsejke-Réka Tóth,
Saurav Kumar Maity,
Tamás Gyulavári,
Enikő Bárdos,
Lucian Baia,
Gábor Kovács,
Seema Garg,
Zsolt Pap,
Klara Hernadi

Affiliations

Zsejke-Réka Tóth: Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, Rerrich Béla Sqr. 1, HU-6720 Szeged, Hungary
Saurav Kumar Maity: Department of Chemistry, Amity Institute of Applied Sciences, Amity University, Sector-125, Noida 201313, Uttar Pradesh, India
Tamás Gyulavári: Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, Rerrich Béla Sqr. 1, HU-6720 Szeged, Hungary
Enikő Bárdos: Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, Rerrich Béla Sqr. 1, HU-6720 Szeged, Hungary
Lucian Baia: Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, Treboniu Laurian Str. 42, RO-400271 Cluj-Napoca, Romania
Gábor Kovács: Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, Rerrich Béla Sqr. 1, HU-6720 Szeged, Hungary
Seema Garg: Department of Chemistry, Amity Institute of Applied Sciences, Amity University, Sector-125, Noida 201313, Uttar Pradesh, India
Zsolt Pap: Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, Rerrich Béla Sqr. 1, HU-6720 Szeged, Hungary
Klara Hernadi: Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, Rerrich Béla Sqr. 1, HU-6720 Szeged, Hungary

DOI: https://doi.org/10.3390/catal11030379
Journal volume & issue: Vol. 11, no. 3
p. 379

Abstract

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In the present work, AgCl microcrystals were obtained by solvothermal crystallization to investigate the effect of H+, Na+, K+, and different shape-tailoring agents (non-ionic: polyvinylpyrrolidone vs. anionic: sodium dodecyl sulfate) on the textural and photocatalytic properties of the samples. The crystallization process resulted in secondary products, such as AgxO or Ag, AgClO3, AgClO4, which were further transformed during the photocatalytic tests. The most efficient photocatalyst (assessed for methyl orange degradation) was synthesized using HCl, as a chloride source and polyvinylpyrrolidone, as a shape-tailoring agent. Therefore, the ability of polyvinylpyrrolidone to enhance the photocatalytic activity was also investigated, and it was found that the addition of 0.6 g polyvinylpyrrolidone resulted in the most efficient photocatalyst. Moreover, AgxO, being a charge separator, could play a critical role in the photocatalytic process, while reversibly transforming to Ag back and forth.

Published in Catalysts

ISSN: 2073-4344 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology; Science: Chemistry
Website: https://www.mdpi.com/journal/catalysts

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