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This experiment introduces undergraduate students to the forefront of organic chemistry and new synthetic methodologies through the synthesis of isoquinolinone guided by photochemistry. By integrating organic photochemistry and continuous flow chemistry, the experiment aims to broaden the scope of undergraduate organic chemistry laboratory teaching. Carbon nitride (g-C3N4) is employed as a heterogeneous photocatalyst, while oxygen serves as a safe and atom-economic oxidant, enabling the synthesis of isoquinolinone under visiblelight irradiation in a continuous flow setup. The experiment encompasses both batch and continuous flow photochemical synthesis of isoquinolinone, as well as the preparation of the natural product corydaldine. Students are involved in various aspects of the experiment, including the installation of a simple flow photochemical reactor, reaction monitoring, product purification, and characterization. Through this project, students not only gain insights into photochemical reactions but also cultivate their creativity and research skills in the realm of green and sustainable chemistry. They acquire hands-on experience in thin-layer chromatography, column chromatography, and spectroscopic analysis techniques like IR and NMR, enhancing their practical skills and environmental awareness. This innovative experiment aligns with the principles of green chemistry and miniaturization and is suitable for incorporation into undergraduate laboratory courses such as Organic Chemistry Laboratory and Comprehensive Chemistry Laboratory. Its introduction into laboratory teaching can enrich teaching practices, promote active learning, and elevate the quality of practical education. [ABSTRACT FROM AUTHOR]

In order to efficiently degrade organic pollutants in the water environment, poly（heptazine） structured K intercalated carbon nitride （CN-K） was prepared using KCl and NH4Cl as structural inducers. The prepared CN-K was characterized by transmission electron microscopy（TEM）, X-ray diffraction（XRD）and so on. The prepared CN-K can be applied as an efficient photocatalyst for the visible-light photocatalytic degradation of endocrine disruptor bisphenol A （BPA）. The CN-K possessed 4 times enhancement photocatalytic performance than bulk g-C3N4, where the degradation ratio of BPA were 99.0% under light irradiation for 20 min. Owing to the K+ uniformly distributed in CN-K, crystalline structure endows the ordered electronic transmission channels in CN-K, thus enhanced the efficiency of photo induced charge carriers separation and migration, as well as visible light capture. In addition, this heterogeneous catalyst can be recycled at least five times and the recovered CN-K after the final cycle displayed unchanged photocatalytic degradation efficiency, demonstrating its excellent stability and outstanding reusability. This study highlighted opportunities for the recycling treatment of wastewater. [ABSTRACT FROM AUTHOR]