Cauliflower-like Ni/NiO and NiO architectures transformed from nickel alkoxide and their excellent removal of Congo red and Cr(<scp>vi</scp>) ions from water

Abstract

Cauliflower-like nickel alkoxide, Ni/NiO and NiO architectures were synthesized <italic>via</italic> a reflux route using NaBH₄–EG as alkaline precipitant.