PVC （a poly vinyl chloride） membrane was prepared by using phenyl disulfide as a carrier for selective determination of Pd （II） ion. The membrane can be worked well over a wide concentration range （1.0 × 106...PVC （a poly vinyl chloride） membrane was prepared by using phenyl disulfide as a carrier for selective determination of Pd （II） ion. The membrane can be worked well over a wide concentration range （1.0 × 106-1.0 × 10-1） M with a slope 29.53 mV/decade and a limit of detection （1.77× 10-7） M. The measured of response time was 9 s. It was found to be selective and useable within the pH range （3.0-7.0）. The lifetime of membrane sensor prepared could be used for at least 4 months. The electrode was successfully used as an indicator electrode in potentiometric titration of palladium ion with EDTA.展开更多
Flexible perovskite photodetectors(FPDs)are promising for novel wearabledevices in bionics,robotics and health care.However,their performance degradationand instability during operations remain a grand challenge.Super...Flexible perovskite photodetectors(FPDs)are promising for novel wearabledevices in bionics,robotics and health care.However,their performance degradationand instability during operations remain a grand challenge.Superiorflexibility and spontaneous functional repair of devices without the need forany external drive or intervention are ideal goals for FPDs.Herein,by usingphenyl disulfide instead of alkyl disulfide as a crosslinking agent,disulfidebonds with lower bond energy are introduced,thus endowing the polyurethanenetwork(SCPU)with the ability of self-healing at room temperature.SCPU is filled to the grain boundary of perovskite film,which not onlyimproves the crystal quality of perovskite and mechanical stability of FPD butalso enables FPD to self-heal at room temperature.As a result,the as-preparedFPD exhibits a superior responsivity of 0.4 A W^(-1),a high specific detectivity of 2.5×10^(11)Jones and 2μs fast response time in a self-powered mode.Moreimportantly,the FPD still retained 91%of the initial photo responsivity after9000 times of bending upon cyclic healing.This polymer doping strategy providesan effective solution for stable operation and room-temperature selfhealingfor FPDs.展开更多
文摘PVC （a poly vinyl chloride） membrane was prepared by using phenyl disulfide as a carrier for selective determination of Pd （II） ion. The membrane can be worked well over a wide concentration range （1.0 × 106-1.0 × 10-1） M with a slope 29.53 mV/decade and a limit of detection （1.77× 10-7） M. The measured of response time was 9 s. It was found to be selective and useable within the pH range （3.0-7.0）. The lifetime of membrane sensor prepared could be used for at least 4 months. The electrode was successfully used as an indicator electrode in potentiometric titration of palladium ion with EDTA.
基金National Natural Science Foundation of China,Grant/Award Numbers:52025028,52072254,U23A20571Key University Science Research Project of Jiangsu Province,Grant/Award Number:21KJA430005King Saud University,Grant/Award Number:RSP2024R391。
文摘Flexible perovskite photodetectors(FPDs)are promising for novel wearabledevices in bionics,robotics and health care.However,their performance degradationand instability during operations remain a grand challenge.Superiorflexibility and spontaneous functional repair of devices without the need forany external drive or intervention are ideal goals for FPDs.Herein,by usingphenyl disulfide instead of alkyl disulfide as a crosslinking agent,disulfidebonds with lower bond energy are introduced,thus endowing the polyurethanenetwork(SCPU)with the ability of self-healing at room temperature.SCPU is filled to the grain boundary of perovskite film,which not onlyimproves the crystal quality of perovskite and mechanical stability of FPD butalso enables FPD to self-heal at room temperature.As a result,the as-preparedFPD exhibits a superior responsivity of 0.4 A W^(-1),a high specific detectivity of 2.5×10^(11)Jones and 2μs fast response time in a self-powered mode.Moreimportantly,the FPD still retained 91%of the initial photo responsivity after9000 times of bending upon cyclic healing.This polymer doping strategy providesan effective solution for stable operation and room-temperature selfhealingfor FPDs.
