Work

Band gap engineering of titanium dioxide (TiO2) nanoparticles prepared via green route and its visible light driven for environmental remediation

Year: 2024

Type: article

Abstract: The present study investigates the green synthesis and characterization of Calcium-doped titanium dioxide nanoparticles (Ca-TiO2 NPs) for their potential application in the degradation of organic pollutants under visible light. The nanoparticles were prepared using a simple phytosynthesis method and characterized by various spectroscopic and microanalytical techniques for structural and optical properties. From UV spectroscopic result it is observed that the energy band gap of pure titanium dioxide (TiO2) is decreased from 3.1eV to 2.52eV, 2.45eV and 2.35eV for 2%, 5% and 9% Ca-doped which shows the transformation from UV to Visible light absorbance. The results obtained suggested that, the introduction of calcium significantly enhanced visible light absorption, thereby extending the photocatalytic activity into the visible spectrum. In this study, the degradation potential of Ca-TiO2 NPs was assessed through the degradation of 4-Nitro phenol and Congo red organic pollutant dyes under visible light spectrum. Results show a substantial improvement in visible light degradation compared to undoped TiO2, indicating the phenomena of calcium-doped titanium dioxide nanoparticles as efficient visible light-responsive photocatalysts for environmental remediation.

Source: Results in Chemistry

DOI: 10.1016/j.rechem.2024.101850

Authors: Yonas Etafa Tasisa, Tridib Kumar Sarma, Ramaswamy Krishnaraj, Suryakamal Sarma

Institutions: Indian Institute of Management Indore, Indian Institute of Technology Indore, Dambi Dollo University

Language: English

Topic: TiO2 Photocatalysis and Solar Cells

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Clean water and sanitation

Open Access status: gold

Estimated APC paid: $1,490