Weiqi Zhang

Distributed generations and renewable energy generations have been widely installed in the distribution systems all over the world. The intermittence of distributed renewable energy generations and their special characteristics have various impacts on power system operation and dispatch. In this paper, the impacts of distributed generations on dispatch modes of power systems are discussed based on the Guangdong power grid in China. We introduce the situations of Guangdong power system, and its installation of distributed generations. The impacts of various distributed renewable energy generations on the system dispatch from the system operator's view point have been discussed. Based on the Guangdong existing generation resources and potential distributed generation grid integration, we provide suggestions to smooth the future integration of large amount of distributed renewable energy generations.

TiO2/BiOCl heterojunction photocatalysts were synthesized from different exposed facets (BiOCl(010) and BiOCl(001)). Both heterojunctions had higher photocatalytic activity than their respective components. The favorable energy band shifts constructed an efficient Z-scheme TiO2/BiOCl heterostructure photocatalytic system, which significantly reduced recombination and accelerated the separation rate of photogenerated carriers. Due to the different electrostatic fields inside the crystal planes of BiOCl, electrons migrate from BiOCl to the TiO2 surface through different transport paths, resulting in the charge transport distance of photogenerated electrons in BiOCl(010) being shorter than that in BiOCl(001), and the electron loss was lower. Therefore, TiO2/BiOCl(010) had a higher photocatalytic activity. Besides, the photocatalytic oxidization mechanism was proposed, TiO2/BiOCl(010) oxidizing NOF mainly via photogenerated h+, while TiO2/BiOCl(001) oxidizing NOF through h+ and ·OH. This study contributes to an in-depth understanding of the charge transfer behavior in the TiO2/BiOCl heterojunction structure and provides a reference for the design of efficient heterojunction photocatalysts.