Synthesis and Characterization of B-S Co-doped TiO2 Photocatalyst with Variable Boron Concentration

International Fundamentum Science Symposium 2018

自然科学;工业技术

Adnen, N.A.I.^1 ; Abdullah, M.A.A.^1 ; Nor, M.A.A.M.^1

School of Fundamental Science, Universiti Malaysia Terengganu, Kuala Terengganu

21030, Malaysia^1

关键词: Anatase phase;    Boron concentrations;    FTIR analysis;    Methylene Blue;    Photocatalytic activities;    Synthesis and characterizations;    TiO2 photocatalyst;    Ultraviolet irradiations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/440/1/012020/pdf
DOI  :  10.1088/1757-899X/440/1/012020

来源: IOP

【 摘 要 】

This study aimed to enhance photocatalytic activity of TiO2 photocatalyst in methylene blue (MB) photodegradation. Boron (B)-sulphur (S) codoped TiO2 photocatalysts were synthesized using sol-gel method with addition of TTIP as precursor. The reaction was carried out using two dopants (0.05 wt. % of S and 0-7 wt. % of B), stirred for 4 hours followed by washing until pH 7. The samples were dried in oven at 100 °C for 12 hours and calcined at 560 °C with heating rate 5 °C/min. Photodegradation of MB were carried out under ultraviolet (UV) irradiation. The undoped and codoped TiO2 photocatalysts were characterized using FTIR, TGA, XRD and UV-Vis. The presence of TiO2 peaks (687-719 cm-1) were confirmed using FTIR analysis and thermal analysis of samples has been evaluated using TGA instrument. XRD analysis revealed the presence of anatase phase at 560 °C and the crystallite size (12-22 nm). Undoped and codoped TiO2 were tested in removing MB from the solution and the results possessed codoped TiO2 with 3 wt. % of B was the best photocatalyst for this study by degrading 59% and 100% of MB after 10 and 35 minutes, respectively.