Engineering of mono-dispersed mesoporous TiO 2 over 1-D nanorods for water purification under visible light irradiation
- PDF / 4,449,047 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 69 Downloads / 231 Views
WATER AND WASTE REMEDIATION PROCESSES. AN UPDATE
Engineering of mono-dispersed mesoporous TiO2 over 1-D nanorods for water purification under visible light irradiation Harish Santhanakrishnan 1,2 & Navaneethan Mani 1,3 & Archana Jayaram 1 & Ponnusamy Suruttaiyaudiyar 1 & Muthamizhchelvan Chellamuthu 1 & Masaru Shimomura 2 Received: 22 January 2020 / Accepted: 16 August 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Herein we synthesized a novel structure of mesoporous TiO2 decorated on 1D ZnO nanorods for environmental remediation. The effect of mesoporous TiO2 over 1D nanorods were investigated. The phase transitions of nanocomposite were confirmed by powder diffraction analysis. The morphological investigation of synthesized TiO2/ZnO catalyst revealed that the TiO2 are in porous in nature which covered the surface of 1D nanorods. The size of mesoporous TiO2 nanoparticles was about 10–15 nm. The chemical composition and elemental mapping results clearly evident that the presence of ZnO and TiO2 is distributed uniformly on ZnO nanorods. TiO2/ZnO nanocomposite shows enhanced activity which degrades in 14 min under visible light irradiation. TiO2/ZnO catalyst with 5 wt % exhibited the high photocatalytic activity (0.1882 min−1). It is proposed that a synergistic interaction between ZnO and TiO2 leads to a charge separation which leads to the enhanced activity. Keywords TiO2/ZnO . Mesoporous . Photocatalytic activity . Nanorods . Visible light
Introduction Hierarchical mesoporous structures with high surface area had great consideration due to its high adsorption and light scattering properties. Hierarchical mesoporous materials are made up of interconnected pores with micropores, mesopores, and macropores in the range of less than 2 nm, 2–50 nm, and greater than 50 nm, respectively (Xiao-Yu et al. 2017). The mesoporous with hierarchical structures has special advantage Responsible editor: Sami Rtimi * Harish Santhanakrishnan [email protected] Navaneethan Mani [email protected] 1
Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur 603 203, India
2
Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka 432-8011, Japan
3
Nanotechnology Research Centre (NRC), Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, India
in various applications such as energy, photocatalysis, life science, sensors, solar cell, and other industrial applications (Zhong et al. 2015; Wei et al. 2015; Meng et al. 2015; Ding et al. 2013; Yang et al. 2015; Konishi et al. 2008; Archana et al. 2016; Bai et al. 2014). As a green and sustainable technology, hierarchical mesoporous semiconductors with nanoscale have been designed and fabricated. Semiconductor ZnO and TiO2 are usually used in many sectors due to their functional properties. TiO2 and ZnO are of great significant semiconductors which can induce
Data Loading...
