In this study,a new series of zinc oxide(ZnO)with high specific surface area and narrow energy band gap are prepared using a facile microwave-induced method.The corresponding formation mechanism is also discussed for ...In this study,a new series of zinc oxide(ZnO)with high specific surface area and narrow energy band gap are prepared using a facile microwave-induced method.The corresponding formation mechanism is also discussed for the first time.Due to the introduction of C,these ZnO can be excited by long wave temperature light without harmful short wave radiation,and play an efficient photocatalytic activity.This valuable property fundamentally improves the biological safety of its photocatalytic application.Herein,taking teeth whitening as an example,the photocatalytic performance of ZnO is evaluated.The“pure”yellow light-emitting diode(PYLED)with high biological safety is used as the excitation source.It is found that this method could effectively remove pigment on the tooth surface through physical adsorption.In addition,these ZnO could generate active oxygen to degrade the pigment on the tooth surface under the irradiation of yellow light.Some further optimization of these“warm light”responsive ZnO is also discussed in this systematical study,which could open up new opportunities in biomedical field.展开更多
基金This work was supported by the National Natural Science Foundation of China(No.31860263 to Xiaolei Wang)Science Foundation of Jiangxi Provincial Department of Science and Technology(20182BCB22019 to Xigao Cheng)+1 种基金Science Foundation of Jiangxi Provincial Department of Education(KJLD14010,20153BCB23035,20161ACB21002,20165BCB19002 to Xiaolei Wang)Nanchang University Seed Grant for Biomedicine.
文摘In this study,a new series of zinc oxide(ZnO)with high specific surface area and narrow energy band gap are prepared using a facile microwave-induced method.The corresponding formation mechanism is also discussed for the first time.Due to the introduction of C,these ZnO can be excited by long wave temperature light without harmful short wave radiation,and play an efficient photocatalytic activity.This valuable property fundamentally improves the biological safety of its photocatalytic application.Herein,taking teeth whitening as an example,the photocatalytic performance of ZnO is evaluated.The“pure”yellow light-emitting diode(PYLED)with high biological safety is used as the excitation source.It is found that this method could effectively remove pigment on the tooth surface through physical adsorption.In addition,these ZnO could generate active oxygen to degrade the pigment on the tooth surface under the irradiation of yellow light.Some further optimization of these“warm light”responsive ZnO is also discussed in this systematical study,which could open up new opportunities in biomedical field.
