Highly dispersed Ni in Poly(heptazine imide) for efficient visible-light-induced photodegradation of dyes: Unraveling the mechanism and band structures - Almeida, Jânio Santos; Batista, Walker Vinícius Ferreira do Carmo; Junior, Ivan J.S.; Pires, Manoel José Mendes; Mesquita, João Paulo de; Mastelaro, Valmor Roberto; Lopes, Osmando Ferreira; Pereira, Márcio César; Rodríguez, Mariandry Del Valle; Mourão, Henrique Aparecido de Jesus Loures (Materials Science in Semiconductor Processing, 2026)