This book provides a comprehensive overview of the synthesis, properties, and multifunctional applications of g-C₃N₄, with a strong emphasis on its role in solving critical global challenges. As the world faces escalating challenges related to energy scarcity and environmental pollution, the demand for sustainable solutions has never been greater. Over the past four decades, global energy consumption has risen by an average of 2.2% per year, and by 2050, it is projected to increase by an a...