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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 …