Fig. 7From: Mini Review on the Structure and Properties (Photocatalysis), and Preparation Techniques of Graphitic Carbon Nitride Nano-Based Particle, and Its ApplicationsSEM images of sample B: (a) alumina particles coated with carbon nitride; (b) detail of the projecting indentations of carbon nitride. It is possible to observe the jaggy shape of the carbon nitride sheets obtained by pyrolysis. SEM images of sample A: (c) and (d) views of alumina particles coated with carbon nitride. Reproduced from [60]Back to article page