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Predoană L, Petcu G, Preda S, Pandele-Cușu J, Petrescu SV, Băran A, Apostol NG, Costescu RM, Surdu VA, Vasile BŞ, Ianculescu AC. Copper-/Zinc-Doped TiO 2 Nanopowders Synthesized by Microwave-Assisted Sol-Gel Method. Gels 2023; 9:gels9040267. [PMID: 37102879 PMCID: PMC10137937 DOI: 10.3390/gels9040267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/17/2023] [Accepted: 03/22/2023] [Indexed: 04/28/2023] Open
Abstract
Using the microwave-assisted sol-gel method, Zn- and Cu-doped TiO2 nanoparticles with an anatase crystalline structure were prepared. Titanium (IV) butoxide was used as a TiO2 precursor, with parental alcohol as a solvent and ammonia water as a catalyst. Based on the TG/DTA results, the powders were thermally treated at 500 °C. XRD and XRF revealed the presence of a single-phase anatase and dopants in the thermally treated nanoparticles. The surface of the nanoparticles and the oxidation states of the elements were studied using XPS, which confirmed the presence of Ti, O, Zn, and Cu. The photocatalytic activity of the doped TiO2 nanopowders was tested for the degradation of methyl-orange (MO) dye. The results indicate that Cu doping increases the photoactivity of TiO2 in the visible-light range by narrowing the band-gap energy.
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Affiliation(s)
- Luminița Predoană
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Gabriela Petcu
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Silviu Preda
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Jeanina Pandele-Cușu
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Simona Viorica Petrescu
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Adriana Băran
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Nicoleta G Apostol
- National Institute of Materials Physics, Atomiștilor 405A, 077125 Măgurele, Romania
| | - Ruxandra M Costescu
- National Institute of Materials Physics, Atomiștilor 405A, 077125 Măgurele, Romania
| | - Vasile-Adrian Surdu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, "Politehnica" University of Bucharest, 1-7 Gh. Polizu, 011061 Bucharest, Romania
| | - Bogdan Ştefan Vasile
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, "Politehnica" University of Bucharest, 1-7 Gh. Polizu, 011061 Bucharest, Romania
| | - Adelina C Ianculescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, "Politehnica" University of Bucharest, 1-7 Gh. Polizu, 011061 Bucharest, Romania
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Mang C, Luo J, Huang C, Jiang H, Rao M, Li G. Calcium silicate hydrate decorated by Fe, Ti co-modified birnessite direct multi-component photocatalyst: Design, preparation and photocatalytic performance under visible light irradiation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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