In this paper, we consider fissionable wave solutions and lump solutions for the (2 + 1)-dimensional Sawada–Kotera equation via the Hirota bilinear form and the long wave limit method. We obtain two types of interactional solutions concluding the elastic interaction of a lump and a solitary wave and the elastic-fissionable-coexistence interaction of a lump and an (N – 2)-fissionable wave.

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A series of novel Bi2O2CO3/polypyrrole/g-C3N4 nanocomposites loaded with different contents of g-C3N4 was demonstrated for recyclable photocatalysis and nonlinear optical applications.