Eco-friendly Approach: Synthesis of Novel Green TiO 2 Nanoparticles for Degradation of Reactive Green 19 Dye and Replace
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ORIGINAL PAPER
Eco-friendly Approach: Synthesis of Novel Green TiO2 Nanoparticles for Degradation of Reactive Green 19 Dye and Replacement of Chemical Synthesized TiO2 Harpreet Kaur1 • Simerjeet Kaur1 • Sanjeev Kumar1 • Jagpreet Singh2 • Mohit Rawat2 Received: 31 March 2020 Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In the present research work, a novel and green TiO2 as an excellent photocatalyst has been synthesized and a comparative study of its structural, morphological and optical properties has been carried out with that of chemical synthesized. Green TiO2 has been synthesized using Titanium(IV)-iso-propoxide as a precursor and Lagenaria siceraria leaf extract has been used as a reducing and capping agent. Photocatalytic activity results indicate that TiO2 nanoparticles synthesized by green method exhibit excellent percentage removal (98.88%) of RG-19 dye in acidic medium as compared to chemical synthesized TiO2 sample which exhibits only 88.55% removal of dye. Higher apparent rate constant (0.02802 min-1) of photocatalytic reaction for green synthesized TiO2 nanoparticles as compared to that of chemical synthesized with apparent rate constant (0.0154 min-1), leads to the lower incubation time i.e., 60 min for green synthesized and 120 min for chemical synthesized. TiO2 nanoparticles synthesized via green synthesis offer high and fast removal of RG-19 dye as compared to chemical route. This study explores the green chemistry based TiO2 as an efficient photocatalyst with outstanding photocatalytic performance, which may open a new perspective for the preparation of excellent photocatalyst with cost-effective and environmentally friendly alternative to chemical and physical methods. Keywords TiO2 nanoparticles Photocatalyst Green materials Semiconductor materials
Introduction
& Sanjeev Kumar [email protected] & Mohit Rawat [email protected] Harpreet Kaur [email protected] Simerjeet Kaur [email protected] Jagpreet Singh [email protected] 1
Optical Material Synthesis Lab, Department of Physics, Sri Guru Granth Sahib World University, Fatehgarh Sahib, Punjab 140407, India
2
Department of Nanotechnology, Sri Guru Granth Sahib World University, Fatehgarh Sahib, Punjab 140407, India
Synthesis of nanoparticles (NPs) using green chemistry is the utilization of a set of principles that might eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. This method has been proposed as a cost-effective and environmentally friendly alternative to chemical and physical methods. The research interest in an era of green synthesis of NPs for the designating the implementation of chemical processes and bio products to regulate the chemical toxicity in the environment, has increased attention towards potential applications like antimicrobial, antibacterial and photocatalytic activity [1–3]. The employment of green synthesis of NPs is bound to the us
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