The development of highly efficient and green catalytic oxidation process based on peroxymonosulfate (PMS) activation has been identified to be a significant yet challenging objective in the environmental catalysis field. A simple, environmentally benign and highly effective catalytic oxidation system was innovatively constructed by coupling NaBO2 and PMS for the removal of Acid Red 1. The catalytic mechanism in the NaBO2/PMS system was elucidated by electron paramagnetic resonance (EPR) combined with several radical capture reagents (ascorbic acid, methanol, tert-butyl alcohol, ethanol and l-histidine). The experimental results indicated that singlet oxygen (1O2) severed as the predominant reactive oxygen species (ROS) rather than the HO or during the catalytic oxidation process, at variance with the reported radical pathway in the Co2+/PMS system. Inspiringly, p-benzoquinone (p-BQ) as a trapping agent in most advanced oxidation process could be turned into the positive one in the NaBO2/PMS system, achieving a nearly 3-times enhancement in terms of the rate constant for AR1 removal. More interestingly, sodium chloride (NaCl) presented the same enhancement effect as p-benzoquinone due to generation of hypochlorous acid (HOCl) and more 1O2, which was completely different from the reported. This study develops a highly efficient green oxidation process and opens up a new insight in the remediation of contaminated water.

中文翻译：

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通过基于偏硼酸钠和过氧一硫酸盐的绿色催化氧化系统高效去除有机污染物。

基于过氧单硫酸盐（PMS）活化的高效，绿色催化氧化工艺的开发已被认为是环境催化领域中一个重要但具有挑战性的目标。通过将NaBO2和PMS偶联以去除酸性红1，创新性地构建了一个简单，对环境无害且高效的催化氧化系统。通过电子顺磁共振（EPR）结合多个自由基捕获，阐明了NaBO2 / PMS系统中的催化机理。试剂（抗坏血酸，甲醇，叔丁醇，乙醇和L-组氨酸）。实验结果表明，单线态氧（1O2）被切断为主要的活性氧（ROS）而不是HO，或者在催化氧化过程中被切断，与报道的Co2 + / PMS系统中的自由基途径不同。令人鼓舞的是，在最先进的氧化过程中，对苯二酚（p-BQ）作为捕集剂可以在NaBO2 / PMS系统中转变为正极性，在去除AR1的速率常数方面实现了近3倍的提高。更有趣的是，氯化钠（NaCl）由于产生次氯酸（HOCl）和更多的1O2而具有与对苯醌相同的增强作用，这与已报道的完全不同。这项研究开发了一种高效的绿色氧化工艺，并为污染水的修复开辟了新的见解。在去除A​​R1的速率常数方面实现了近3倍的增强。更有趣的是，氯化钠（NaCl）由于产生次氯酸（HOCl）和更多的1O2而具有与对苯醌相同的增强作用，这与已报道的完全不同。这项研究开发了一种高效的绿色氧化工艺，并为污染水的修复开辟了新的见解。在去除A​​R1的速率常数方面实现了近3倍的增强。更有趣的是，氯化钠（NaCl）由于产生次氯酸（HOCl）和更多的1O2而具有与对苯醌相同的增强作用，这与已报道的完全不同。这项研究开发了一种高效的绿色氧化工艺，并为污染水的修复开辟了新的见解。