As an emerging member of the graphene family, structurally defined graphene nanoribbons (GNRs) have shown promising applications in various fields. The evaluation of the degradability of GNRs is particularly important for assessing the persistence level and risk of these materials in living organisms and the environment. However, there is a void in the study of the degradation of GNRs. Here, we report the degradation behavior of GNRs in the presence of human myeloperoxidase (hMPO) or treated with the photo‐Fenton (PF) reaction. With the assistance of potassium hydroxide or imidazole, which facilitates the dispersion of GNRs in the aqueous solution, GNRs underwent only partial degradation after 25‐hour incubation with hMPO, while, the PF reaction degraded GNRs almost completely after 120 hours. These results indicate that structurally precise GNRs can be efficiently degraded under suitable conditions, providing more opportunities for future applications in different fields.

中文翻译：

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髓过氧化物酶和光芬顿反应降解结构确定的石墨烯纳米带。

作为石墨烯家族的新兴成员，结构定义的石墨烯纳米带（GNR）在各个领域都显示出了广阔的应用前景。对GNRs的可降解性的评估对于评估这些物质在生物体和环境中的持久性水平和风险尤其重要。但是，GNRs降解的研究存在空白。在这里，我们报道了在人类髓过氧化物酶（hMPO）或光芬顿（PF）反应处理下GNRs的降解行为。在氢氧化钠或咪唑的帮助下，GNR在水溶液中的分散变得容易，在与hMPO孵育25小时后，GNR仅经历了部分降解，而PF反应在120小时后几乎完全降解了GNR。