Novel synthetic route for low-cost carbon-modified TiO2 with enhanced visible light photocatalytic activity: carbon content and calcination effects - Moraes, Nícolas Perciani de; Silva, Maria Lucia Caetano Pinto da; Campos, Tiago Moreira Bastos; Thim, Gilmar Patrocínio; Rodrigues, Liana Alvares (Journal of sol-gel science and technology, 2018)