随着通信技术和电子技术的紧密结合,手持终端得到了快速发展。本文采用一种基于PXA310和WINCE6.0的设计方案设计了应用于高级计量架构(AMI)系统中电力营销智能手持终端的GPRS、电力红外、RS485、RFID(Radio Frequency Identification,...随着通信技术和电子技术的紧密结合,手持终端得到了快速发展。本文采用一种基于PXA310和WINCE6.0的设计方案设计了应用于高级计量架构(AMI)系统中电力营销智能手持终端的GPRS、电力红外、RS485、RFID(Radio Frequency Identification,射频识别技术)四个通信模块。通过对智能手持终端四个通信模块的设计与研究,结合智能用电的技术要求,提出了智能电网下电力营销智能手持终端通信系统的硬件结构和软件功能设计方案,为提高电力用户现场服务提供了有效技术手段。展开更多
Investigation of the charge dynamics and roles of cocatalysts is crucial for understanding the reaction of photocatalytic water splitting on semiconductor photocatalysts.In this work,the dynamics of photogenerated ele...Investigation of the charge dynamics and roles of cocatalysts is crucial for understanding the reaction of photocatalytic water splitting on semiconductor photocatalysts.In this work,the dynamics of photogenerated electrons in Ga_(2)O_(3) loaded with Cr_(2)O_(3)-Rh cocatalysts was studied using time-resolved mid-infrared spectroscopy.The structure of these Cr_(2)O_(3)-Rh cocatalysts was identified with high-resolution transmission electron microscopy and CO adsorption Fourier-transform infrared spectroscopy,as Rh particles partly covered with Cr_(2)O_(3).The decay dynamics of photogenerated electrons reveals that only the electrons trapped by the Rh particles efficiently participate in the H2 evolution reaction.The loaded Cr_(2)O_(3) promotes electron transfer from Ga_(2)O_(3) to Rh,which accelerates the electron-consuming reaction for H2 evolution.Based on these observations,a photocatalytic water-splitting mechanism for Cr_(2)O_(3)-Rh/Ga_(2)O_(3) photocatalysts has been proposed.The elucidation of the roles of the Cr_(2)O_(3)-Rh cocatalysts aids in further understanding the reaction mechanisms of photocatalytic water splitting and guiding the development of improved photocatalysts.展开更多
文摘随着通信技术和电子技术的紧密结合,手持终端得到了快速发展。本文采用一种基于PXA310和WINCE6.0的设计方案设计了应用于高级计量架构(AMI)系统中电力营销智能手持终端的GPRS、电力红外、RS485、RFID(Radio Frequency Identification,射频识别技术)四个通信模块。通过对智能手持终端四个通信模块的设计与研究,结合智能用电的技术要求,提出了智能电网下电力营销智能手持终端通信系统的硬件结构和软件功能设计方案,为提高电力用户现场服务提供了有效技术手段。
文摘Investigation of the charge dynamics and roles of cocatalysts is crucial for understanding the reaction of photocatalytic water splitting on semiconductor photocatalysts.In this work,the dynamics of photogenerated electrons in Ga_(2)O_(3) loaded with Cr_(2)O_(3)-Rh cocatalysts was studied using time-resolved mid-infrared spectroscopy.The structure of these Cr_(2)O_(3)-Rh cocatalysts was identified with high-resolution transmission electron microscopy and CO adsorption Fourier-transform infrared spectroscopy,as Rh particles partly covered with Cr_(2)O_(3).The decay dynamics of photogenerated electrons reveals that only the electrons trapped by the Rh particles efficiently participate in the H2 evolution reaction.The loaded Cr_(2)O_(3) promotes electron transfer from Ga_(2)O_(3) to Rh,which accelerates the electron-consuming reaction for H2 evolution.Based on these observations,a photocatalytic water-splitting mechanism for Cr_(2)O_(3)-Rh/Ga_(2)O_(3) photocatalysts has been proposed.The elucidation of the roles of the Cr_(2)O_(3)-Rh cocatalysts aids in further understanding the reaction mechanisms of photocatalytic water splitting and guiding the development of improved photocatalysts.
