He Li, Guan Wei, Zeng Yao, Zhao De, Qiu Xuemin, Jia Guo
Resource and Environment College, Zunyi Normal University, Zunyi, China.
Chongqing Key Laboratory of Environmental Materials and Remediation Technologies, Chongqing University of Arts and Sciences, Chongqing, China.
Front Chem. 2022 Jan 28;9:748622. doi: 10.3389/fchem.2021.748622. eCollection 2021.
Air pollutants cause severe problems in urban areas, specifically in terms of toxicological impacts on human health. Therefore, it is urgent to develop an effective, safe, and inexpensive technique to remove these air pollutants. In this study, the MoS/OMC heterojunction photocatalyst was successfully synthesized by a hydrothermal process and used for improving photocatalytic oxidation performance for removing VOCs. Formaldehyde was used as a model VOC in the gas phase and was removed at room temperature under visible light irradiation. For my research, the microstructure and morphology of the photocatalyst were deeply characterized, and the results indicated that MoS were successfully coupled into OMC materials to prepare MoS/OMC heterojunction photocatalysts. The trend of photocatalytic efficiency for formaldehyde decomposition was MoS/OMC > MoS > OMC. Besides, the MoS/OMC heterojunction photocatalyst showed an excellent regeneration performance after several recycles, indicating the potential of MoS/OMC composite as a promising photocatalyst for VOC removal. These results indicated that the photocatalytic reactor containing MoS/OMC photocatalysts was highly active and stable.
空气污染物在城市地区引发严重问题，尤其是在对人类健康的毒理学影响方面。因此，迫切需要开发一种有效、安全且廉价的技术来去除这些空气污染物。在本研究中，通过水热法成功合成了MoS/OMC异质结光催化剂，并用于提高去除挥发性有机化合物（VOCs）的光催化氧化性能。甲醛被用作气相中的模型VOC，并在室温可见光照射下被去除。对于我的研究，对光催化剂的微观结构和形态进行了深入表征，结果表明MoS成功地耦合到OMC材料中，制备出了MoS/OMC异质结光催化剂。甲醛分解的光催化效率趋势为MoS/OMC > MoS > OMC。此外，MoS/OMC异质结光催化剂在多次循环后表现出优异的再生性能，表明MoS/OMC复合材料作为一种有前景的VOC去除光催化剂具有潜力。这些结果表明，含有MoS/OMC光催化剂的光催化反应器具有高活性和稳定性。
