H2O2-assisted Bi3NbO7 loaded on porous carbon for enhancing the photocatalytic degradation of tetracycline

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Solid State Sciences Pub Date : 2024-11-19 DOI:10.1016/j.solidstatesciences.2024.107763

Yao Wang , Pengzhan Zhang , Fan Li , Liang Zhang , Bing Xu , Kangkang Wang , Zhixian He , Yuyan Sun , Shengnan Zhang

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Abstract

Bi₃NbO₇ loaded on porous carbon (BNO/PC) composite materials has been prepared by the in-suit sol-gel method. The photocatalytic efficacy of the BNO/PC composite has been evaluated by degrading tetracycline (TC) in an environment of visible light and hydrogen peroxide. Moreover, the relevant influencing factors of TC degradation efficiency have been explored through a series of condition optimization experiments. UV–vis DRS and PL tests showed that the loading on porous carbon significantly broadens the visible light response range of the catalyst and improves the separation efficiency of photogenerated carriers. Compared with the bare BNO, the specific surface area and average pore diameter of the BNO/PC composite material increased greatly. The optimal sample of 35 % BNO/PC exhibited outstanding visible light response ability and excellent charge separation efficiency. The “cata + H₂O₂+vis” system had the highest photocatalytic activity, with TC degradation reaching 86.9 % after 60 min of visible light illumination. The addition of hydrogen peroxide (H₂O₂) promoted the formation of more powerful active substances. Following this, a mechanism for photocatalytic degradation has been proposed.

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多孔碳上负载的 H2O2- 辅助 Bi3NbO7 可提高四环素的光催化降解能力

采用内服溶胶-凝胶法制备了负载在多孔碳上的 Bi3NbO7（BNO/PC）复合材料。通过在可见光和过氧化氢环境下降解四环素（TC），评估了 BNO/PC 复合材料的光催化功效。此外，还通过一系列条件优化实验探讨了四环素降解效率的相关影响因素。UV-vis DRS 和 PL 测试表明，多孔碳的负载显著拓宽了催化剂的可见光响应范围，提高了光生载流子的分离效率。与裸 BNO 相比，BNO/PC 复合材料的比表面积和平均孔径都大大增加。BNO/PC 含量为 35% 的最佳样品具有突出的可见光响应能力和优异的电荷分离效率。cata + H2O2 +vis "体系的光催化活性最高，在可见光照射 60 分钟后，TC 降解率达到 86.9%。过氧化氢（H2O2）的加入促进了更强活性物质的形成。据此，提出了一种光催化降解机制。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.