CuO/TiO2 Nanocomposites: Effect of Calcination on Photocatalytic Hydrogen Production

Authors

  • M. V. Shankar Nano Catalysis and Solar Fuels Research Lab, Department of Materials Science and Nanotechnology, Yogi Vemana University, Kadapa-516003, Andhra Pradesh, India
  • D. Praveen Kumar Nano Catalysis and Solar Fuels Research Lab, Department of Materials Science and Nanotechnology, Yogi Vemana University, Kadapa-516003, Andhra Pradesh, India
  • N. Lakshmana Reddy Nano Catalysis and Solar Fuels Research Lab, Department of Materials Science and Nanotechnology, Yogi Vemana University, Kadapa-516003, Andhra Pradesh, India
  • M. Mamatha Kumari Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology (IICT), Hyderabad-500607, Telangana, India
  • B. Srinivas Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology (IICT), Hyderabad-500607, Telangana, India
  • V. Durga Kumari Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology (IICT), Hyderabad-500607, Telangana, India

Keywords:

Nanorods, titanium dioxide, photocatalytic water splitting, biomass, solar fuel

Abstract

Hydrothermally synthesized TiO2 nanorods were subjected to calcination from 350 to 550 °C and tested their catalytic performance for hydrogen (H2) production in aqueous glycerol solution under solar irradiation. High rate of H2 evolution ca.300 µmol.h−1.g−1cat was recorded with TiO2 nanorods calcined at 500 °C. The nanocomposites were prepared by varying Cu-loading 0.1 to 2.0 wt% and activated at 350 or 500 °C. About 25 folds enhancement in H2 production rate was observed with 1.5% CuO/TiO2 nanorods than calcined ones. Catalyst characterization revealed that as-synthesized TiO2 material was nanorods with trititanate crystal structure. The optimized photocatalyst confirmed presence of copper in + 2 state and mixed crystal structure of TiO2(B) and anatase. Based on the experimental results high photocatalytic activity observed is due to improved crystallanity of TiO2 nanorods and CuO as well

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Published

2019-04-16

Issue

Vol. 1 No. 2 (2014)

Section

Articles

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