A condensation polymer (urea-formaldehyde resin) passivated ZnO nanoparticles were used as an efficient photocatalyst for methyl blue degradation in the presence of H₂O₂ involving a Fenton-like reaction. The formation of OH˙ radicals were attributed to the pivotal factor for the degradation process. The method was easy and recyclable. The dose of photocatalyst, initial dye concentration, pH variation, variations of the composition of the photocatalyst, and the effect of scavengers were gauged. The degraded product was highly fluorescent and fluorometric detection of H₂O₂ was achieved along with a colorimetric recognition pathway. No other dye could be degraded under similar experimental conditions, implying the novel utility of methyl blue for environmental remediation.

中文翻译：

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H2O2 传感光催化降解甲基蓝染料

_{缩聚物（脲醛树脂）钝化的 ZnO 纳米颗粒被用作一种有效的光催化剂，在 H 2} O ₂存在下进行甲基蓝降解，涉及类芬顿反应。 OH˙自由基的形成被认为是降解过程的关键因素。该方法简单且可回收。测量了光催化剂的剂量、初始染料浓度、pH变化、光催化剂组成的变化以及清除剂的效果。降解产物具有强荧光，并且通过比色识别途径实现了H ₂ O ₂的荧光检测。在类似的实验条件下，没有其他染料可以降解，这意味着甲基蓝在环境修复方面具有新的用途。