pH值适应范围窄一直是制约芬顿反应发展的技术瓶颈，因此，开发pH‐tolerant类芬顿催化剂成为环境催化领域的研究热点和难点。采用活性碳纤维（ACFs）耦合喹啉铁（QuFe）制得一种新型pH‐tolerant类芬顿催化纤维（QuFe＠ ACFs），该催化纤维在中性条件下可以活化双氧水有效降解活性艳红 M‐3B E。采用自由基捕获剂邻苯二胺，结合电子顺磁共振波谱、紫外‐可见光谱等对催化纤维的重复稳定性进行了重点考察。结果显示，QuFe＠ ACFs在pH值为3～9范围内均具有良好的催化性能和重复使用性，表现出了优异的pH‐tolerant性能。QuFe＠ ACFs制备方法简单，巧妙解决了制约传统芬顿反应发展的技术瓶颈，为制备新一代高活性pH‐tolerant芬顿催化剂提供了新思路。
The application of Fenton reaction is restricted to a narrow pH range (2‐3 5.) ,which has long been a technological bottleneck .Therefore ,the development of a pH‐tolerant Fenton‐like catalyst is an active and chal‐lenging research front in the field of environmental catalysis .In this work ,the pH‐tolerant performance of the novel Fenton‐like catalytic fibers (QuFe@ ACFs) based on activated carbon fibers (ACFs) coupled with 8‐hydroxyquinoline ferric (QuFe) was evaluated by a simple impregnation method .The UV‐Vis spectroscopy measurements showed that the reactive brilliant red M‐3BE (RR M‐3BE) was completely degraded in 32 min . Probe compound O‐phenylenediamine combined with electron paramagnetic resonance (EPR) spectroscopy and UV‐Vis spectroscopy were employed to demonstrate the catalytic stability of QuFe@ ACFs ,and the experimen‐tal results showed that QuFe@ ACFs exhibited excellent catalytic ability and recycle utilization performance across a wide pH range from 3 to 9 ,brought remarkable pH‐tolerant performance .To sum up ,the QuFe@ACFs prepared by an extremely simple impregnation method ,breaks the technological bottleneck for Fenton treatment ,providing new ideas for preparing novel pH‐tolerant Fenton‐like catalysts with excellent catalytic ac‐tivity .
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