Optimizing the local surface plasmon resonance(LSPR)effect of non-noble metals through alloying has been crucial for improving its practical application in the field of photocatalysis.Rare studies capture the detail t...Optimizing the local surface plasmon resonance(LSPR)effect of non-noble metals through alloying has been crucial for improving its practical application in the field of photocatalysis.Rare studies capture the detail that the change in the electronic structure of metal elements caused by alloying affects plasma carrier concentration and the local surface plasmon resonance effect.Herein,NiCuCoFe medium-entropy alloys(MEAs)nanoclusters were designed and used to modify the Bi_(3)O_(4)Br/CNNs Z-scheme heterojunc-tion.The cocktail effect of MEAs causes the 3d-orbital hybridization of various metal elements,which promotes the release of charge carriers.The higher the carrier concentration,the stronger the LSPR effect of MEAs.In addition,the mechanism of three typical working pathways of the LSPR effect to improve the photocatalytic performance of heterojunction is discussed.And compared with those of Bi_(3)O_(4)Br,CNNs,and Bi_(3)O_(4)Br/CNNs,the rate constant of MEAs-Bi_(3)O_(4)Br/CNNs was 3.26,11.16,and 3.17 times higher during the degradation of norfloxacin,respectively.This study provides a new strategy for understanding the mechanism of LSPR and the rational design of plasmonic coupling architectures for enhanced photocatalysis.展开更多
The localized surface plasmon resonance (LSPR) of noble metal nanoparticles have been described in numerous articles. Changes in the peak intensity and wavelength of
随着环境问题日益严重,具有环保清洁特质的超级电容器等新能量存储设备得到广泛关注。因此,对于实时灵活地评估能量存储器件的运行机理和充电状态(State of charge,SOC)仍然具有挑战性。电化学分析法是研究电极反应机理和电极过程动力...随着环境问题日益严重,具有环保清洁特质的超级电容器等新能量存储设备得到广泛关注。因此,对于实时灵活地评估能量存储器件的运行机理和充电状态(State of charge,SOC)仍然具有挑战性。电化学分析法是研究电极反应机理和电极过程动力学的重要方法,但有时不能实时在线监测内部电极的表面电荷状态。透射电子显微镜和X-射线衍射仪等检测设备由于体积庞大和价格昂贵等原因,限制了对超级电容器的原位监测的发展。提出了一种灵活便携的光纤局域表面等离子体共振(Local surface plasmon resonance,LSPR)探针,用于超级电容器内部电极的电荷量实时在线分析。将负载金纳米粒子的反射式光纤LSPR传感器贴合超级电容器电极表面,结果表明,此结构可以灵敏地监测超级电容器充放电过程中的电极表面电荷状态;通过与传统电化学工作站的结果比较,该方法得到的电荷状态与实际电荷量具有良好的线性关系,有效拓展了光纤传感器在能量检测领域的研究与应用。展开更多
基金supported by the National Natural Science Foundation of China(No.22172092)the PhD Start-up Foundation for Science and Technology(No.420071 and 420093)+1 种基金the Natural Science Foundation of Shandong Province(Nos.ZR2021MB048 and ZR2021MB079)the Development and Application of Cutting-edge Technologies for Comprehensive Utilization of Hydrogen Energy(No.219213).
文摘Optimizing the local surface plasmon resonance(LSPR)effect of non-noble metals through alloying has been crucial for improving its practical application in the field of photocatalysis.Rare studies capture the detail that the change in the electronic structure of metal elements caused by alloying affects plasma carrier concentration and the local surface plasmon resonance effect.Herein,NiCuCoFe medium-entropy alloys(MEAs)nanoclusters were designed and used to modify the Bi_(3)O_(4)Br/CNNs Z-scheme heterojunc-tion.The cocktail effect of MEAs causes the 3d-orbital hybridization of various metal elements,which promotes the release of charge carriers.The higher the carrier concentration,the stronger the LSPR effect of MEAs.In addition,the mechanism of three typical working pathways of the LSPR effect to improve the photocatalytic performance of heterojunction is discussed.And compared with those of Bi_(3)O_(4)Br,CNNs,and Bi_(3)O_(4)Br/CNNs,the rate constant of MEAs-Bi_(3)O_(4)Br/CNNs was 3.26,11.16,and 3.17 times higher during the degradation of norfloxacin,respectively.This study provides a new strategy for understanding the mechanism of LSPR and the rational design of plasmonic coupling architectures for enhanced photocatalysis.
文摘The localized surface plasmon resonance (LSPR) of noble metal nanoparticles have been described in numerous articles. Changes in the peak intensity and wavelength of
