Nguyen, Thuy Thanh Doan;
Le, Nhung Cam Thi;
Nguyen, De;
Huynh, Vu Tan;
Nguyen, Linh Thuy Ba;
Nguyen, Phuong Tuyet;
(2023)
Surface properties of nano-TiO2 synthesized from two different TiO2 precursor sources by an alkaline hydrothermal process followed with a H2O2 treatment: Experiments combined with statistical analysis.
Vietnam Journal of Chemistry
, 61
(S2)
pp. 38-44.
10.1002/vjch.202300053.
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Nguyen_SURFACE PROPERTIES OF NANO-TiO2 SYNTHESIZED FROM TWO DIFFERENT TiO2 PRECURSOR SOURCES BY AN ALKALINE HYDROTHERMAL PROCESS FOLLOWED WITH A H2O2 TREATMENT EXPER.pdf Access restricted to UCL open access staff until 13 September 2024. Download (447kB) |
Abstract
Our research aimed to improve the surface properties of TiO2 for application in dye-sensitized solar cells (DSC) by an alkaline hydrothermal process combined with H2O2 treatment. The effect of the TiO2 sources on the product quality was evaluated further by statistical analysis of the experimental data. The two commercial TiO2 precursors from Supelco (Merck – Germany) and BA-100 (China) were used to produce nano TiO2 by the hydrothermal process in NaOH solution with two different concentrations of 5 M and 8 M at 150oC. The final products were characterized by XRD, FT-IR, FE-SEM, and chemical bonds on the TiO2 surface were particularly identified by XPS. The XPS data were then analyzed statistically by the K-Means Clustering algorithm based on R software. The results showed that NaOH concentrations were directly involved with the formation of Ti─O; Ti─OH bonds and TiO2 morphology. The H2O2 treatment showed similar effects on TiO2 surface bonding but with less significant impacts than those of NaOH. In particular, the TiO2 reactant sources did not influence the structures, morphologies, and especially the surface properties of the products. Hence, a low-cost TiO2 reactant should be selected in terms of economically effective products. The final TiO2 products were suitable for applications in DSC.
| Type: | Article |
|---|---|
| Title: | Surface properties of nano-TiO2 synthesized from two different TiO2 precursor sources by an alkaline hydrothermal process followed with a H2O2 treatment: Experiments combined with statistical analysis |
| DOI: | 10.1002/vjch.202300053 |
| Publisher version: | https://onlinelibrary.wiley.com/doi/10.1002/vjch.2... |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | TiO2; surface properties; hydrothermal synthesis; statistical analysis |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute > Biomaterials and Tissue Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10192013 |
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