N, N-Dimethylformamide-assisted One-step Synthesis of Fe Doped Hierarchical Flower-like BiOCOOH with Enhenced Photocatalytic Activity

The photocatalytic efficiency is often limited by the low utilization of visible light and the rapid recombination of photogenerated carriers. In this work, we successfully synthesized BiOCOOH micro-flowers self-assembled from two-dimensional nanosheets using N,N-dimethylformamide and Bi(NO3)3·5H2O as raw materials. The characterizations such as XRD, SEM, TEM, and EDS proved the success of Fe3+ doping into the lattice of BiOCOOH. By degrading the colored dye RhB, it was found that 0.8FBOC has the best photocatalytic performance, and its degradation rate constant is 0.013 min-1, which is 6 times than pure BiOCOOH. According to previous works, the intermediates generated during the photodegradation of RhB in this work were investigated and we speculate the possible photocatalytic mechanism at the end. Up to now, we have hardly discovered about the doping modification of BiOCOOH, so this study offers a new idea for the modification of BiOCOOH.