title: Photoluminescence Properties and Photocatalytic Performance of Different Size ZnO Nanoparticles Decorated Graphene Oxide.
abstract: We synthesized the hybrid structure of the graphene oxide (GO) sheet and the size-controlled ZnO nanoparticles. The ZnO quantum sizes were confirmed from UV-vis spectrophotometry and TEM results. The ZnO quantum dot exhibited a stable broad and strong photoluminescence (PL) emission which is broader with the increase of ZnO nanoparticle size. The hybrid ZnO/GO results an abrupt decrease of PL emission and the excellent photodegradation performance of methylene blue under UV-light irradiation. A considerable increase of the photodegradation rate with decreasing ZnO nanoparticle size is due to the enhancement of ZnO surface interaction and the improvement of electron transfer at the ZnO/GO interface.
authors.forename: Doan Van
authors.initials: DV
authors.lastname: Thuan
authors.forename: Nguyen Tri
authors.initials: NT
authors.lastname: Khoa
authors.forename: Soon Wook
authors.initials: SW
authors.lastname: Kim
authors.forename: Dae-Hwang
authors.initials: DH
authors.lastname: Yoo
authors.forename: Eui Jung
authors.initials: EJ
authors.lastname: Kim
authors.forename: Sung Hong
authors.initials: SH
authors.lastname: Hahn