College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350108, China.
Institute of Innovation and Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China.
Int J Mol Sci. 2023 Apr 6;24(7):6872. doi: 10.3390/ijms24076872.
Catalysis is the most efficient and economical method for treating volatile organic pollutants (VOCs). Among the many materials that are used in engineering, platinized carbon nitride (Pt/g-CN) is an efficient and multifunctional catalyst which has strong light absorption and mass transfer capabilities, which enable it to be used in photocatalysis, thermal catalysis and photothermal synergistic catalysis for the degradation of benzene. In this work, Pt/g-CN was prepared by four precursors for the photothermal synergistic catalytic degradation of benzene, which show different activities, and many tests were carried out to explore the possible reasons for the discrepancy. Among them, the Pt/g-CN prepared from dicyanamide showed the highest activity and could convert benzene (300 ppm, 20 mL·min) completely at 162 °C under solar light and 173 °C under visible light. The reaction temperature was reduced by nearly half compared to the traditional thermal catalytic degradation of benzene at about 300 °C.
催化是处理挥发性有机污染物（VOCs）最有效和最经济的方法。在众多工程材料中，担载铂的氮化碳（Pt/g-CN）是一种高效多功能催化剂，具有较强的光吸收和传质能力，可用于光催化、热催化和光热协同催化苯的降解。在这项工作中，使用四种不同前驱体制备了 Pt/g-CN，用于苯的光热协同催化降解，它们表现出不同的活性，并进行了多项测试来探索差异的可能原因。其中，由双氰胺制备的 Pt/g-CN 表现出最高的活性，在太阳光下 162°C 和可见光下 173°C 时可完全转化浓度为 300 ppm、体积为 20 mL·min 的苯。与传统的约 300°C 热催化苯降解相比，反应温度降低了近一半。
