A polydopamine-coated control-release nano-calcium peroxide(nCaO2@PDA)was produced in this study,and the effects of various influencing factors on the control-release of hydrogen peroxide(H2O2)were investigated.The results show that the release of H2O2 was strongly negative correlated to temperature,dopamine content and pH.Further investigation was conducted to elucidate the mechanism and the role of the surface core-shell PDA.The composite material demonstrated effective inhibition of the pH increase in the system during the controlled release of hydrogen peroxide retardation.This inhibition was attributed to the presence of the catechol group on the surface of the PDA core-shell structure.
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