Bismuth chromate, a semiconductor in the bismuth-based materials family, was successfully prepared in this work. This semiconductor exhibited high solar and visible-light responsivity, making it a promising candidate for photocatalysis under solar light. Compared to other two widely reported photocatalysts (i.e. Bi₂WO₆ and Bi₂MoO₆), Bi₂CrO₆ exhibited superiorities, including narrower band gap (2.00 eV), wider responsive wavelength range of the solar spectrum (up to 622 nm) and one-dimensional morphology. However, one of the most challenging problems for Bi₂CrO₆ applied in photocatalysis may be due to its high recombination of photogenerated charge carriers (lifetime of photoactivated charges: 0.660 ns). This should be further addressed in future work with advanced strategies. This work provides a method to experimentally prepare Bi₂CrO₆ and sheds a light on the significance of this ‘new’ bismuth-based semiconductor in photocatalysis.

这项工作成功地制备了铬酸铋，一种基于铋的材料家族中的半导体。这种半导体表现出高的太阳能和可见光响应性，使其成为在太阳光下光催化的有希望的候选者。与其他两种广为报道的光催化剂（即Bi ₂ WO ₆和Bi ₂ MoO ₆）相比，Bi ₂ CrO ₆具有优势，包括更窄的带隙（2.00 eV），更宽的太阳光谱响应波长范围（最高达622 nm）。和一维形态。然而，Bi ₂ CrO ₆最具挑战性的问题之一应用于光催化的原因可能是由于它能高度重组光生载流子（光活化电荷的寿命：0.660 ns）。在以后的工作中，应使用高级策略进一步解决此问题。这项工作提供了一种实验上制备Bi ₂ CrO ₆的方法，并阐明了这种“新型”铋基半导体在光催化中的重要性。