Halobenzoquinones (HBQs) are emerging toxic disinfection byproducts in water. Development of effective methods to decompose or remove HBQs from water is imperative. Herein, we report the exploration of a metal-organic framework ZIF-8 as an effective catalysis of the transformation and removal of HBQs in darkness. Three HBQs (2,6-dichloro-1,4-benzoquinone (DCBQ), 2,6-dibromo-1,4-benzoquinone (DBBQ) and tetrachloro-1,4-benzoquinone (TCBQ)) were taken as examples and main degradation product of HBQs was studied. In the presence of ZIF-8, 90 % of the HBQs transformed in <10 min and the transformation followed pseudo-first-order kinetics with large reaction rate constants of 0.163–0.181 min⁻¹. ZIF-8 further made the major transformation product OH-HBQs disappear completely within the following 24 h. In addition, >80 % of ZIF-8 initial activity was maintained after 4 cycles. Radical and holes inhibition experiments verified that the holes in ZIF-8 dominated HBQs hydroxylation. Except for OH-HBQ, several other possible products were found and all of them were predicted as less toxic than their parent compound. This study offers a potential approach for HBQs removal from disinfected waters.

卤代苯醌 (HBQ) 是水中新出现的有毒消毒副产物。开发有效的方法来分解或去除水中的 HBQ 势在必行。在此，我们报告了对金属有机框架 ZIF-8 作为在黑暗中转化和去除 HBQ 的有效催化的探索。以三种HBQ（2,6-二氯-1,4-苯醌（DCBQ）、2,6-二溴-1,4-苯醌（DBBQ）和四氯-1,4-苯醌（TCBQ））为例，主要研究了HBQs的降解产物。在存在 ZIF-8 的情况下，90% 的 HBQ 在 10 分钟内转化，并且转化遵循准一级动力学，具有 0.163-0.181 分钟^{-1的大反应速率常数}. ZIF-8 进一步使主要转化产物 OH-HBQs 在接下来的 24 小时内完全消失。此外，在 4 个循环后，ZIF-8 初始活性的 > 80% 得以维持。自由基和空穴抑制实验证实了 ZIF-8 中的空穴主导了 HBQs 羟基化。除 OH-HBQ 外，还发现了其他几种可能的产物，并且预测它们的毒性均低于其母体化合物。这项研究提供了一种从消毒水中去除 HBQ 的潜在方法。