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Aims. We investigate the role of photo-evaporation of dust exposed to theradiation field from hot young stars and planetary nebulae (PNe) as a possibledestruction mechanism of dust grains in the interstellar medium (ISM). Methods.We estimate photo-evaporation induced by the feedback of individual orclustered young stars, of PNe and in the presence of a variable radiation fieldscaled with the interstellar radiation field. For PNe we investigate dustphoto-evaporation of both dust grains already present in the ISM as well asthose formed in the last phases of the evolution of thermally pulsingasymptotic giant branch (TP-AGB) stars. We include dust photo-evaporation ratein models of dust evolution in galaxies for different assumptions of the dustgrowth scenario, dust-to-gas ratios, star formation histories, and initial massfunctions of the stars. Results. For all the cases considered, we find thatboth photo-evaporation from young stars and from PNe are negligible withrespect to other dust removal processes such as destruction from supernovaeshocks, astration and possibly outflow. Grains are stable againstphoto-evaporation if they are exposed to a radiation field which is up to 10^7times the interstellar radiation field. Conclusions. Dust grains of size >=0.01 microns are not efficiently destroyed by photo-evaporation also in thepresence of a strong radiation field.

Dust survival in harsh environments -- Is photo-evaporation an important destruction mechanism?