Patra Rashmiranjan, Dash Pranjyan, Panda Pradeep Kumar, Yang Po-Chih
Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan.
Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 10608, Taiwan.
Nanomaterials (Basel). 2023 Jul 26;13(15):2173. doi: 10.3390/nano13152173.
Water pollution has emerged as a major global environmental crisis due to the massive contamination of water resources by the textile dyeing industry, organic waste, and agricultural residue. Since water is fundamental to life, this grave disregard puts lives at risk, making the protection of water resources a serious issue today. Recent research has shown great interest in improving the photocatalytic performance of graphitic carbon nitride (g-CN) for wastewater treatment. However, the photocatalytic removal activity of pure g-CN is poor, owing to its minimal surface area, fast recombination of photo-generated electron-hole pairs, and poor light absorption. Recently, titanate perovskites (TNPs) have attracted significant attention in both environmental remediation and energy conversion due to their exceptional structural, optical, physiochemical, electrical, and thermal properties. Accordingly, TNPs can initiate a variety of surface catalytic reactions and are regarded as an emerging category of photocatalysts for sustainability and energy-related industries when exposed to illumination. Therefore, in this review article, we critically discuss the recent developments of extensively developed g-CN/TNPs that demonstrate photocatalytic applications for wastewater treatment. The different synthetic approaches and the chemical composition of g-CN/TNP composites are presented. Additionally, this review highlights the global research trends related to these materials. Furthermore, this review provides insight into the various photocatalytic mechanisms, including their potential impact and significance. Also, the challenges faced by such materials and their future scope are discussed.
由于纺织印染行业、有机废物和农业残留物对水资源的大规模污染，水污染已成为全球主要的环境危机。由于水是生命的基础，这种严重的漠视将生命置于危险之中，使得水资源保护成为当今一个严峻的问题。最近的研究表明，人们对提高石墨相氮化碳（g-CN）用于废水处理的光催化性能表现出极大兴趣。然而，纯g-CN的光催化去除活性较差，这是由于其表面积最小、光生电子-空穴对快速复合以及光吸收能力差。最近，钛酸钙钛矿（TNPs）因其优异的结构、光学、物理化学、电学和热学性质，在环境修复和能量转换方面都引起了广泛关注。因此，TNPs在光照下可以引发各种表面催化反应，被视为可持续发展和能源相关产业中新兴的光催化剂类别。因此，在这篇综述文章中，我们批判性地讨论了广泛开发的g-CN/TNPs在废水处理光催化应用方面的最新进展。介绍了g-CN/TNP复合材料的不同合成方法和化学成分。此外，本综述突出了与这些材料相关的全球研究趋势。此外，本综述深入探讨了各种光催化机制，包括它们的潜在影响和意义。同时，还讨论了这类材料面临的挑战及其未来发展前景。
