Conversion of CO to carbon-based fuels via photocatalytic reduction, as a prospective approach, could alleviate energy shortages and environmental problems. However, the adsorption and activation of CO in the process of photocatalytic CO reduction are still great challenge. Herein, Zr isomorphous substituted BiOBr catalyst with surface frustrated Lewis acid-base pairs (SFLPs) are formed by a convenient chemical method. The photocatalytic activity of CO reduction for optimal Zr-BiOBr is significantly improved, with CO yield of 185.7 μmol·g·h and CH of 0.7 μmol·g·h, being 9.2 - fold and 3.2 - fold higher than that of original BiOBr, respectively. It is found that zirconium is considered as Lewis acid site and lattice oxygen as Lewis base site, which could effectively boost the adsorption and activiation of CO molecules. This work not only demonstrates that construction of SFLPs for catalyst could be taken as an effective tactics for CO adsorption and activation, but also suggests a possible photocatalytic mechanism in depth.

中文翻译：

---

锆诱导表面抑制了 BiOBr 的路易斯酸碱对，促进 CO2 光还原

作为一种前瞻性方法，通过光催化还原将二氧化碳转化为碳基燃料，可以缓解能源短缺和环境问题。然而，光催化CO还原过程中CO的吸附和活化仍然是巨大的挑战。在此，通过方便的化学方法形成了具有表面受挫路易斯酸碱对（SFLP）的Zr同晶取代BiOBr催化剂。最佳Zr-BiOBr的光催化CO还原活性显着提高，CO产率185.7 μmol·g·h，CH产率0.7 μmol·g·h，比原始BiOBr分别提高9.2倍和3.2倍。分别。研究发现，锆被认为是路易斯酸位，晶格氧被认为是路易斯碱位，可以有效促进CO分子的吸附和活化。这项工作不仅证明了构建 SFLP 催化剂可以作为 CO 吸附和活化的有效策略，而且还深入提出了一种可能的光催化机制。