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Non-metal (Oxygen, Sulphur, Nitrogen, Boron and Phosphorus)-Doped Metal Oxide Hybrid Nanostructures as Highly Efficient Photocatalysts for Water Treatment and Hydrogen Generation

  • M. S. Jyothi
  • Vignesh Nayak
  • Kakarla Raghava Reddy
  • S. Naveen
  • A. V. Raghu
Chapter
Part of the Environmental Chemistry for a Sustainable World book series (ECSW, volume 29)

Abstract

Inorganic metal oxide semiconductor-based photocatalyst plays key role in the photocatalytic process for applications such as environmental pollution (air and water) and hydrogen generation, due to their physico-chemical and photocatalytic properties. However, they are only active under ultraviolet irradiation, and it is a major drawback of oxide-based photocatalysts. The designing of visible-light-driven photocatalysts based on metal oxides is very important for the highly efficient photocatalytic process.

Doping of metal oxides (e.g. TiO2, ZnO, ZrO2) with non-metals such as oxygen, sulphur, nitrogen, boron and phosphorus elements enhances their photocatalytic efficiency under visible-light irradiation due to the strong oxidizing ability of non-metals. In this chapter, we discussed recent advances in various methodologies for the synthesis of series of above non-metal-doped hybrid nanostructured metal oxides, their properties, photocatalytic mechanism and the parameters (e.g. dopant concentration, photocatalyst content, morphological structures and band gap characteristics) that decide the photocatalytic performance for photocatalytic applications such as wastewater treatment and hydrogen generation. This chapter will provide novel ideas for the synthesis strategies of metal-free efficient photocatalysts with superior visible-light response for applications in the fields of the environment and energy.

Keywords

Metal oxide (TiO2, ZnO) semiconductors Non-metal (oxygen, sulphur, nitrogen, boron and phosphorus) dopants Non-metal-doped metal oxide hybrids Photocatalysis Visible-light-driven photocatalysts Band gap properties Wastewater treatment Hydrogen generation 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • M. S. Jyothi
    • 1
  • Vignesh Nayak
    • 2
  • Kakarla Raghava Reddy
    • 3
  • S. Naveen
    • 4
  • A. V. Raghu
    • 4
  1. 1.Department of Chemical Technology, Faculty of SciencesChulalongkorn UniversityBangkokThailand
  2. 2.Center for Nano and Material sciencesJain UniversityBangaloreIndia
  3. 3.School of Chemical & Biomolecular EngineeringThe University of SydneySydneyAustralia
  4. 4.Department of Basic Sciences, School of Engineering and Technology, CETJain UniversityBangaloreIndia

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