Institute of Research and development, Duy Tan University, Da Nang, Vietnam.
School of Engineering & Technology, Duy Tan University, Da Nang, Vietnam.
Environ Geochem Health. 2024 Feb 17;46(3):76. doi: 10.1007/s10653-023-01834-y.
The escalating global industrial expansion has led to the extensive release of organic compounds into water bodies, resulting in substantial pollution and posing severe threats to both human health and the ecosystem. Among common micropollutants, bisphenol A (MP-BA) has emerged as a significant endocrine-disrupting chemical with potential adverse effects on human health and the environment. This study aims to develop an efficient photocatalyst, specifically by incorporating palladium-doped graphitic carbon nitride (Pd@GCN), to eliminate MP-BA pollutants present in industrial wastewater. The examination of optical properties and photoluminescence indicates that incorporating Pd into GCN enhances the visible light absorption spectra, which extends beyond 570 nm, and accelerates the separation rate of electron-hole pairs. The photocatalytic degradation efficiency of MP-BA increases from 81.7 to 98.8% as the solution pH rises from 5.0 to 9.0. Moreover, Pd@GCN significantly improves the removal rate of MP-BA in wastewater samples, reaching an impressive 92.8% after 60 min of exposure to solar light. Furthermore, the Pd@GCN photocatalyst exhibits notable reusability over six cycles of MP-BA degradation, indicating its promising potential for the treatment of organic pollutants in wastewater under solar light conditions.
全球工业的不断扩张导致有机化合物广泛释放到水体中，造成了严重的污染，并对人类健康和生态系统构成了严重威胁。在常见的微量污染物中，双酚 A（MP-BA）是一种重要的内分泌干扰化学物质，可能对人类健康和环境造成不良影响。本研究旨在开发一种高效的光催化剂，具体方法是将钯掺杂石墨相氮化碳（Pd@GCN），以消除工业废水中存在的 MP-BA 污染物。光学性质和光致发光的研究表明，将钯掺入 GCN 可以增强可见光吸收光谱，使其延伸至 570nm 以上，并加速电子-空穴对的分离速率。当溶液 pH 值从 5.0 升高到 9.0 时，MP-BA 的光催化降解效率从 81.7%提高到 98.8%。此外，Pd@GCN 显著提高了废水样品中 MP-BA 的去除率，在 60 分钟的太阳光照射下达到了惊人的 92.8%。此外，Pd@GCN 光催化剂在六次 MP-BA 降解循环中表现出良好的可重复使用性，表明其在太阳光条件下处理废水中有机污染物具有广阔的应用前景。
