Visible-light-driven photodegradation is an effective method for the elimination of organic water pollutants.In this work,through linker engineering,we designed a series of UiO-67-type metal-organic frameworks(termed ...Visible-light-driven photodegradation is an effective method for the elimination of organic water pollutants.In this work,through linker engineering,we designed a series of UiO-67-type metal-organic frameworks(termed as UiO-67-NA,UiO-67-BT,and UiO-67-NB)with different electron donors and acceptors.Photoelectric characterization revealed that UiO-67-NB fabricated from the donor-acceptor-conjugated photosensitizer 7-(4-carboxynaphthalen-1-yl)-2,1,3-benzothiadiazole-4-carboxylic acid(H2NB)featured the best electron-hole separation and transfer efficiency to generate abundant active reaction species.Photocatalytic experiments showed that UiO-67-NB could be exploited as a high-performance heterogeneous catalyst for the photodegradation of tetracycline under visible-light irradiation.This work provides a feasible platform to improve the utilization of solar energy in water pollutant removal.展开更多
In Floquet engineering,we apply a time-periodic modulation to change the effective behavior of a wave system.In this work,we generalize Floquet engineering to more fully exploit spatial degrees of freedom,expanding th...In Floquet engineering,we apply a time-periodic modulation to change the effective behavior of a wave system.In this work,we generalize Floquet engineering to more fully exploit spatial degrees of freedom,expanding the scope of effective behaviors we can access.We develop a perturbative procedure to engineer space-time dependent driving forces that effectively transform broad classes of tight-binding systems into one another.We demonstrate several applications,including removing disorder,undoing Anderson localization,and enhancing localization to an extreme in spatially modulated waveguides.This procedure straightforwardly extends to other types of physical systems and different Floquet driving field implementations.展开更多
基金supported by Natural Science Foundation of Jilin Province(YDZJ202201ZYTS646)Jilin Provincial Education Department(JJKH20210875KJ,JJKH20220825KJ)Natural Science Foundation of Changchun Normal University(2018011).
文摘Visible-light-driven photodegradation is an effective method for the elimination of organic water pollutants.In this work,through linker engineering,we designed a series of UiO-67-type metal-organic frameworks(termed as UiO-67-NA,UiO-67-BT,and UiO-67-NB)with different electron donors and acceptors.Photoelectric characterization revealed that UiO-67-NB fabricated from the donor-acceptor-conjugated photosensitizer 7-(4-carboxynaphthalen-1-yl)-2,1,3-benzothiadiazole-4-carboxylic acid(H2NB)featured the best electron-hole separation and transfer efficiency to generate abundant active reaction species.Photocatalytic experiments showed that UiO-67-NB could be exploited as a high-performance heterogeneous catalyst for the photodegradation of tetracycline under visible-light irradiation.This work provides a feasible platform to improve the utilization of solar energy in water pollutant removal.
基金U.S.Department of Energy,Office of Science,Office of Nuclear Physics(DE-SC0011090)National Science Foundation(1745302)+1 种基金MIT Physics Department and School of Science,LDRD Program of Los Alamos National Laboratory(20240786PRD1)National Nuclear Security Administration of the U.S.Department of Energy(892332188CNA000001)。
文摘In Floquet engineering,we apply a time-periodic modulation to change the effective behavior of a wave system.In this work,we generalize Floquet engineering to more fully exploit spatial degrees of freedom,expanding the scope of effective behaviors we can access.We develop a perturbative procedure to engineer space-time dependent driving forces that effectively transform broad classes of tight-binding systems into one another.We demonstrate several applications,including removing disorder,undoing Anderson localization,and enhancing localization to an extreme in spatially modulated waveguides.This procedure straightforwardly extends to other types of physical systems and different Floquet driving field implementations.
