Liu Baoliang, Zhang Wenkai, Zhang Qikun, Guan Yintao, Lu Zaijun
Key Laboratory for Special Functional Aggregated Materials of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China.
College of Chemical Engineering and Environment, China University of Petroleum, Beijing, 102249, P. R. China.
Small. 2023 Nov;19(48):e2303907. doi: 10.1002/smll.202303907. Epub 2023 Aug 11.
Hydrogen peroxide (H O ) is considered one of the most important chemical products and has a promising future in photocatalytic preparation, which is green, pollution-free, and hardly consumes any non-renewable energy. This study involves the preparation of benzoxazine with Si─O bonds via the Mannich reaction, followed by co-hydrolysis to produce photocatalysts containing benzoxazine with Si─O─Ti bonds. In this study, a benzoxazine photocatalyst with Si─O─Ti bonds is synthesized and characterized using fourier transform infrared spectroscopy, nuclear magnetic resonance, and X-ray photoelectron spectroscopy. The size and elemental distribution of the nanoparticles are confirmed by transmission electron microscopy and scanning electron microscopy. The photocatalytic synthesis of H O is tested using the titanium salt detection method, and the rate is found to be 7.28 µmol h . Additionally, the catalyst exhibits good hydrolysis resistance and could be reused multiple times. The use of benzoxazine with Si─O─Ti bonds presents a promising experimental and theoretical foundation for the industrial production of H O through photocatalytic synthesis.
过氧化氢（H₂O₂）被认为是最重要的化学产品之一，在光催化制备方面具有广阔的前景，其具有绿色、无污染且几乎不消耗任何不可再生能源的特点。本研究涉及通过曼尼希反应制备含Si─O键的苯并恶嗪，随后进行共水解以制备含Si─O─Ti键的苯并恶嗪光催化剂。在本研究中，合成了具有Si─O─Ti键的苯并恶嗪光催化剂，并通过傅里叶变换红外光谱、核磁共振和X射线光电子能谱对其进行了表征。通过透射电子显微镜和扫描电子显微镜确定了纳米颗粒的尺寸和元素分布。使用钛盐检测方法测试了H₂O₂的光催化合成，发现速率为7.28 μmol/h。此外，该催化剂表现出良好的耐水解性，并且可以多次重复使用。含Si─O─Ti键的苯并恶嗪的使用为通过光催化合成工业生产H₂O₂提供了有前景的实验和理论基础。
