Degradation of polyethylene terephthalate(PET)plastics by the traditional technologies usually requires high energy consumption and encounters poor product selectivity.Herein,we report the photoconversion of PET into ...Degradation of polyethylene terephthalate(PET)plastics by the traditional technologies usually requires high energy consumption and encounters poor product selectivity.Herein,we report the photoconversion of PET into carbon dioxide with 100%selectivity by in-plane heterostructured NiO/Fe_(2)O_(3) nanosheets in pure water under normal temperature and pressure.High-resolution transmission electron microscopy,X-ray absorption near-edge spectroscopy and X-ray photoelectron spectra demonstrate the construction of the Z-scheme heterojunction,which can help to accelerate the separation of electron-hole pairs for enhanced PET conversion property.Various in-situ characterization techniques and experiments unveil that PET is photodegraded into carbon dioxide by the photogenerated holes,while oxygen is photoreduced into water by the photoexcited electrons.This work will open new avenues toward resolving the white pollution crisis.展开更多
基金financially supported by the National Key R&D Program of China(2019YFA0210004,2017YFA0207301)the National Natural Science Foundation of China(22125503,21975242,U2032212,21890754)+8 种基金the Strategic Priority Research Program of Chinese Academy of Sciences(CAS,XDB36000000)the Youth Innovation Promotion Association of CAS(CX2340007003)the Major Program of Development Foundation of Hefei Center for Physical Science and Technology(2020HSC-CIP003)the Key Research Program of Frontier Sciences of CAS(QYZDYSSW-SLH011)the Fok Ying-Tong Education Foundation(161012)the Users with Excellence Program of Hefei Science Center(2020HSC-UE001)the University Synergy Innovation Program of Anhui Province(GXXT-2020-001)Anhui Provincial Natural Science Foundation(2108085QB69)the Fundamental Research Funds for the Central Universities(WK2060000006)。
文摘Degradation of polyethylene terephthalate(PET)plastics by the traditional technologies usually requires high energy consumption and encounters poor product selectivity.Herein,we report the photoconversion of PET into carbon dioxide with 100%selectivity by in-plane heterostructured NiO/Fe_(2)O_(3) nanosheets in pure water under normal temperature and pressure.High-resolution transmission electron microscopy,X-ray absorption near-edge spectroscopy and X-ray photoelectron spectra demonstrate the construction of the Z-scheme heterojunction,which can help to accelerate the separation of electron-hole pairs for enhanced PET conversion property.Various in-situ characterization techniques and experiments unveil that PET is photodegraded into carbon dioxide by the photogenerated holes,while oxygen is photoreduced into water by the photoexcited electrons.This work will open new avenues toward resolving the white pollution crisis.
