A review on CaTiO3 photocatalyst: Activity enhancement methods and photocatalytic applications

Calcium titanate (CaTiO3) a multi-metal oxide has received extensive attention in recent years, due to its unique structural features, high chemical stability, optimum band edge positions, strong catalytic activity, inexpensiveness, low toxicity and easy synthesis. The current review summarizes various synthesis methods that have been carried out for the preparation of CaTiO3 nanomaterials, their structural properties, their modification strategies including elemental doping, noble metal deposition, heterostructure formation, hybridization with carbonaceous materials like graphene, graphitic‑carbon nitride and photocatalytic applications related to environmental and energy fields such as photodegradation of organic pollutants, carbon-dioxide reduction, and production of green currency of energy (hydrogen). Besides, efforts are also made to provide a perspective for future research. Overall this review aims to provide useful information for specialists dealings with calcium titanate. [Display omitted] •Summary of the significant advances achieved in the past few years on CaTiO3.•Review of the synthesis methods and its different morphologies•Strategies that enhance the photocatalytic activity of CaTiO3 are focused.•Great potential of CaTiO3 photocatalysts in energy and environmental applications•Future works for the highly efficient CaTiO3 based photocatalysis are suggested.