Abstract

Photocatalytic and catalytic activity of NiO loaded on mixture of anatase/rutile phases of TiO2 nanoparticles were investigated for some organic reactions including selective oxidation of alcohols, synthesis of benzimidazoles and preparation of imines at room temperature. The p–n junction formed between NiO and TiO2 as well as difference between band gaps in anatase/rutile phases facilitated electron transfer to TiO2 and successfully promoted synthesis of compounds. The use of a reusable photocatalyst without noble metal co-catalysts, along with the mild reaction conditions and use of light energy, make this method as an environmentally benign and energy saving chemical procedure.

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