Structure, photocatalytic and antibacterial activity study of Meso porous Ni and S co-doped TiO2 nano material under visible light irradiation

doi:10.1016/j.cjche.2018.11.001

摘要/Abstract

摘要： Undoped and Ni-S co-doped mesoporous TiO₂ nano materials were synthesized by using sol-gel method. The characteristic features of as prepared catalyst samples were investigated using various advanced spectroscopic and analytical techniques. The characterization results of the samples revealed that all the samples exhibited anatase phase (XRD), decreasing band gap (2.68 eV) (UV-Vis-DRS), small particle size (9.2 nm) (TEM), high surface area (142.156 m²·g^-1) (BET), particles with spherical shape and smooth morphology (SEM); there is a frequency shift observed for co-doped sample (FT-IR) and the elemental composition electronic states and position of the doped elements (Ni and S) in the TiO₂ lattice analyzed by XPS and EDX. These results supported the photocatalytic degradation of Bismarck Brown Red (BBR) achieved with in 110 min and also exhibited the antibacterial activity on Staphylococcus aureus (MTCC-3160), Pseudomonas fluorescence (MTCC-1688) under visible light irradiation.

关键词: Sol-gel, Ni-S co-doped TiO₂, Photocatalysis under visible light, Degradation of Bismarck Brown Red, Antibacterial activity

Abstract: Undoped and Ni-S co-doped mesoporous TiO₂ nano materials were synthesized by using sol-gel method. The characteristic features of as prepared catalyst samples were investigated using various advanced spectroscopic and analytical techniques. The characterization results of the samples revealed that all the samples exhibited anatase phase (XRD), decreasing band gap (2.68 eV) (UV-Vis-DRS), small particle size (9.2 nm) (TEM), high surface area (142.156 m²·g^-1) (BET), particles with spherical shape and smooth morphology (SEM); there is a frequency shift observed for co-doped sample (FT-IR) and the elemental composition electronic states and position of the doped elements (Ni and S) in the TiO₂ lattice analyzed by XPS and EDX. These results supported the photocatalytic degradation of Bismarck Brown Red (BBR) achieved with in 110 min and also exhibited the antibacterial activity on Staphylococcus aureus (MTCC-3160), Pseudomonas fluorescence (MTCC-1688) under visible light irradiation.

Key words: Sol-gel, Ni-S co-doped TiO₂, Photocatalysis under visible light, Degradation of Bismarck Brown Red, Antibacterial activity

K. V. Divya Lakshmi, T. Siva Rao, J. Swathi Padmaja, I. Manga Raju, M. Ravi Kumar. Structure, photocatalytic and antibacterial activity study of Meso porous Ni and S co-doped TiO₂ nano material under visible light irradiation[J]. 中国化学工程学报, 2019, 27(7): 1630-1641.

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Structure, photocatalytic and antibacterial activity study of Meso porous Ni and S co-doped TiO₂ nano material under visible light irradiation

Structure, photocatalytic and antibacterial activity study of Meso porous Ni and S co-doped TiO₂ nano material under visible light irradiation

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