▎ 摘　　要

NOVELTY - Photocatalytic nanocomposite comprises a core-shell capsule comprising a core made of triple-quadrupole quenching organic molecule and a shell formed on the core and made of silica; a semiconductor nanoparticles supported on the shell; and graphene oxide located on semiconductor nanoparticles. The graphene oxide is produced in form of a disk having diameter of 10-100 nm. USE - The nanocomposite is useful as catalyst for producing hydrogen peroxide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing photocatalytic nanocomposite, comprising (a) producing oil in water including triple-quadrupole quenching organic molecule, fatty acid and water, (b) adding alkoxysilane compound having amino group into the oil in water to form micelle suspension, and preparing a core-shell capsule by sol-gel reaction of alkoxysilane compound having amino group, (c) supporting the semiconductor nanoparticles on the shell of the core-shell capsule, and (d) placing graphene oxide on surface of the semiconductor nanoparticles.