BiOBr Photocatalyzed Polymer Water Based Drilling Fluid
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摘要: 针对目前各种废弃聚合物水基钻井液无害化处理技术存在的诸多缺点，提出了以常温水解法的方式，在室温下合成三维花状BiOBr光催化材料，并对其组成、形貌和光学性能进行了表征。以罗丹明B（RhB）为目标降解物，考察了其在可见光下的光催化活性，并首次将其用于聚合物水基钻井液体系的降解。研究表明，BiOBr可在可见光条件下激发； 10 min对RhB的降解率达58.3%，同时对聚合物水基钻井液体系有很好的降解效果。通过活性物种俘获实验，证明BiOBr通过产生O2−和H+活性组分，从而降解聚合物材料。为废弃聚合物水基钻井液的降解提供了新的思路。Abstract: A 3D flower-shaped BiOBr photocatalytic material has been produced through hydrolysis reaction at room temperature to deal with the deficiencies in the harmless disposal of various waste water based polymer muds. The composition, morphology and optical performance of BiOBr were characterized. The photocatalytic activity under visible light was examined using Rhodamine B (RhB) as the target degradant, and the BiOBr was for the first time used in the degradation of water based polymer muds. Laboratory study showed that BiOBr can be excited under visible light; the rate of degradation of RhB in 10 min can be as high as 58.3%. BiOBr also has good effect on the degradation of water based polymer muds. It was proved, through capture of active species, that BiOBr degrades polymers by producing active O2− and H+ ions. This study has provided a new clue for the degradation of waste water based polymer muds.
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Key words:
- BiOBr /
- Photocatalysis /
- Active species /
- Water based polymer mud
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