In this study, a DMP5 polymer (DMPBP[5]) adsorption enhanced Bi₂WO₆ (BWO) photocatalysis Fe₃O₄ self-Fenton system (DMPBP[5]-BWO-Fe₃O₄) was proposed. The system includes the adsorption of pollutants and active substances by DMPBP[5] as the prerequisite and driving force for the reaction, a Bi-based photocatalyst as an in situ robust H₂O₂ generator, and decorated Fe₃O₄ (Fe²⁺/Fe³⁺) as the trigger and enhancer for H₂O₂ formation and transformation, which leads to a highly efficient and stable activity for persistent organic pollutants. Considering the photo-oxidation of RhB as a model reaction, this system exhibits 17–18 times higher photodegradation rate than that of the original BWO, which corresponds to a high catalytic activity of 98.3% (k = 14.2 × 10^-3 min⁻¹) within 180 min. The advantages of the system are mainly attributed to: (1) DMPBP[5] has a large specific surface area (1386 m²/g), which provides more adsorption sites for pollutants; (2) Further, through theoretical calculation, we found that the super-strong adsorption capacity of DMPBP[5] for RhB (−0.061 eV) was much higher than that of Fe₃O₄ (−0.0025 eV) and BWO (−0.0015 eV); (3) The production of H₂O₂ on DMPBP[5]-BWO-Fe₃O₄ is greatly increased, and the concentration of H₂O₂ can be accumulated to 5.506 μM within 120 min, which is about 90.3 times and 9.25 times higher than that of BWO and BWO-D₇, respectively. The system presented here provides new insights into the efficient and environmentally friendly removal of refractory organic contaminants.

本研究提出了一种DMP5聚合物(DMPBP[ 5 ])吸附增强Bi ₂ WO ₆ (BWO)光催化Fe ₃ O ₄自芬顿体系(DMPBP[ 5 ]-BWO-Fe ₃ O _{4 )。}该系统包括以DMPBP[ 5 ]吸附污染物和活性物质作为反应的前提和驱动力，Bi基光催化剂作为原位稳健的H ₂ O ₂发生器，以及修饰的Fe ₃ O ₄ (Fe ^{2 +} /Fe ^{3+ ) 作为 H} ₂ O ₂的触发剂和增强剂形成和转化，从而实现对持久性有机污染物的高效稳定的活性。以RhB的光氧化为模型反应，该系统的光降解率比原始BWO高17-18倍，相当于98.3%的高催化活性（k = 14.2 × 10 ^-3 min ^-1）180分钟内。该系统的优点主要归因于：（1）DMPBP[ 5 ]具有较大的比表面积（1386 m ² /g），为污染物提供了更多的吸附位点；(2)进一步，通过理论计算，我们发现DMPBP[5]对RhB(-0.061 eV)的超强吸附能力远高于Fe ₃ O ₄(-0.0025 eV) 和 BWO (-0.0015 eV)；(3) DMPBP[5]-BWO-Fe ₃ O _{4上H 2} O ₂产量大幅增加，120 min内H ₂ O ₂浓度可累积至5.506 μM，约为原来的90.3倍。分别比BWO和BWO-D ₇高9.25倍。这里介绍的系统为高效、环保地去除难降解有机污染物提供了新的见解。