Apatite formation in Hanks' solution on β-Ca2SiO4 films prepared by MOCVD

► Single phase di-calcium silicate (β-Ca2SiO4) films were prepared by MOCVD. ► The β-Ca2SiO4 films showed excellent apatite formation after 7 d of immersion. ► The apatite formation of β-Ca2SiO4 film was slower than that of HAp film, but faster than that of CaTiO3 and α-TCP films. ► β-Ca2SiO4 films can be used as a coating on other materials to be used as bone implant materials.