Graphitic Carbon Nitride: Synthesis and Characterization, Monolayer at the Air–Water Interface, Langmuir–Blodgett Films, and Its Photocatalytic Performance - Éverton Wilker A. Almeida; Claire M. C. Dazon; Mariandry D. V. R. Rodriguez; Thatyane M. Nobre; Márcio César Pereira; Douglas S. Monteiro (ACS Omega)