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首页> 外文期刊>Journal of Materials Research >In situ synthesis of adsorptive β-Bi_2O_3/Bi0Br photocatalyst with enhanced degradation efficiency
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In situ synthesis of adsorptive β-Bi_2O_3/Bi0Br photocatalyst with enhanced degradation efficiency

机译：原位合成具有增强降解效率的吸附性β-Bi_2O_3/ Bi0Br光催化剂

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摘要

Bismuth (Bi)-based photocatalytic materials are widely used in the field of photocatalytic degradation of wastewater. In this study, beta-beta i(2)O(3)/BiOBr heterojunction photocatalysts were prepared by an in situ chemical transformation method. BiOBr molecules are arrayed to cross each other to form a pore around beta-beta i(2)O(3). The prepared photocatalyst had a large specific surface area and excellent adsorption and photocatalytic properties. The beta-beta i(2)O(3)/BiOBr with a molecular ratio of 11.1% had the highest catalytic activity. The result of a degradation experiment, performed with Rhodamine B (RhB) as the target pollutant, revealed that the degradation rate reached 99.85% after 25 min under visible light irradiation. The pore structure can adsorb contaminants and the heterojunction facilitates the separation of photogenerated electron-hole pairs to enhance the photocatalytic properties. The high adsorption performance and heterojunction achieved higher photocatalytic efficiency. This semiconductor photocatalyst with high adsorption performance provides a new approach to control water pollution.
机译：铋（Bi）基光催化材料广泛用于废水的光催化降解领域。在这项研究中，β-βi（2）O（3）/ BiOBr异质结光催化剂是通过原位化学转化方法制备的。 BiOBr分子排列成彼此交叉以在β-βi（2）O（3）周围形成孔。制备的光催化剂具有大的比表面积以及优异的吸附和光催化性能。具有11.1％分子比的β-βi（2）O（3）/ BiOBr具有最高的催化活性。以若丹明B（RhB）为目标污染物进行的降解实验结果表明，在可见光照射下25分钟后，降解率达到99.85％。孔结构可以吸附污染物，异质结促进光生电子-空穴对的分离，从而增强光催化性能。高吸附性能和异质结实现了较高的光催化效率。这种具有高吸附性能的半导体光催化剂提供了一种控制水污染的新方法。

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