A bibliometric review on electric vehicle (EV) energy efficiency and emission effect research.

Electric vehicles have received extensive attention due to their unique energy efficiency and good emission reduction effects. While a large-scale of electric vehicles are gradually replacing traditional fuel vehicles, it is necessary to ensure the energy efficiency of electric vehicles and the effectiveness of their emission reduction effects. This study conducted a bibliometric analysis of scientific publications on energy efficiency and emission reduction effects of electric vehicles from 2003 to 2022, using a variety of bibliometric tools such as R Studio, biblioshiny and VOSviewer. The results showed the gradual elimination of traditional energy vehicles, where electric vehicles play an important role in connecting energy efficiency and emission control. The results also showed the top publication outlets, citations trackers, authors with thematic evaluation of energy efficiency and emission reduction effects of electric vehicles. The contribution of the study is manifold. The academic contribution of the present study is the bibliometric analysis which will help academicians to get a quick overview of the most popular journals, top collaborators, documents, authors, and scientific knowledge structure. Secondly, policy makers, environmentalists, researchers, and academician will definitely get a pathway how they should go for future research. Finally, this study suggests more researches trend to focus on the sales of electric vehicles, automobile exhaust emissions, sensitivity analysis of electric vehicles, energy storage analysis to improve the energy efficiency of electric vehicles, and V2G related to the energy efficiency of electric vehicle clusters.

A facile approach for syntheses of nearly monodisperse nanocrystals: sol-solvothermal process.

A novel facile approach, sol-solvothermal process, is reported here for syntheses of nearly monodisperse inorganic nanocrystals (NCs), such as elementary metals, simple metal oxides, composite oxides, and selenides by using inexpensive metal salts and environmental friendly solvents as reactants without a further size-selection treatment. The results revealed that mean diameter of the synthetic NCs measured by Dynamic Light Scattering (DLS) was consistent with the observed size by Field-emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM) images, demonstrating the agglomeration-free feature of the nanosized crystals. Moreover, the particle size and morphology of the synthetic NCs could be effectively controlled under various appropriate sets of experimental conditions.