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One Step Preparation of In-Situ Carbon-Modified Artificial Leaf BiVO4 for Photocatalytic Pollutants Degradation
Materials Research Bulletin ( IF 5.4 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.materresbull.2019.110756
Ruijie Yang , Yingying Fan , Rongshu Zhu

Abstract A novel BT-DCCOC method for in situ one-step preparation of carbon-modified BiVO4 with leaf-liked structures (artificial leaf) was developed. This strategy provides a new way for the preparation of C-modified photocatalyst (using biological template and controlling oxygen content in calcination atmosphere), and realizes the synchronous control of bionic structure and carbon modification. The leaf-liked structures and morphologies of the prepared samples were observed by the FE-SEM and TEM observations. The content of residual carbon, which was formed in-site by adjusting the oxygen content in the calcination atmosphere, was measured by TG-DSC. The photocatalytic activities of the samples were evaluated by the degradation of RhB. The results showed that the artificial leaf synthesized at 3 % oxygen content with a carbon content of 6.32 wt% demonstrated the best photocatalytic degradation activity. The improved photocatalytic performance can be attributed to the combination of unique morphology and carbon modification control.

中文翻译:

一步法制备原位碳改性人造叶BiVO4光催化降解污染物

摘要 开发了一种原位一步法制备具有叶状结构(人造叶)碳修饰BiVO4的新型BT-DCCOC方法。该策略为制备C修饰的光催化剂(利用生物模板,控制煅烧气氛中的氧含量)提供了一种新的途径,实现了仿生结构和碳修饰的同步控制。通过FE-SEM和TEM观察观察制备的样品的叶状结构和形貌。通过调整煅烧气氛中的氧含量而原位形成的残余碳的含量通过TG-DSC测量。通过降解RhB来评价样品的光催化活性。结果表明,人造叶合成的氧含量为 3%,碳含量为 6。32wt%表现出最好的光催化降解活性。改进的光催化性能可归因于独特的形态和碳改性控制的结合。
更新日期:2020-04-01
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