Renewable and economical generation of hydrogen via electrochemical methods shows great potential in addressing the energy crisis. In this study, an emerging molten salt method was adopted for the synthesis of a cerium-modified rhenium disulfide nanosheet for electrical hydrogen evolution reactions. The prepared 1% Ce-doped rhenium disulfide (ReS2) sample showed promoted hydrogen evolution performance in both acid and alkaline electrolytes compared to bare ReS2. Generating of abundant defects in ReS2 exposed more reaction active sites. Moreover, adding cerium accelerated the hydrogen evolution dynamics. Hopefully, this work will offer new insight into developing ReS2-based electrocatalysts for hydrogen evolution reactions.
The Special-Contracted Teacher Scheme, a supplement to the traditional mode of teacher supply, has been implemented for 17 years and the teaching quality of those teachers has gained a lot of attention. Using data of teachers and students from the sample counties in four central and western provincial-level administrative units, this paper studies how special-contracted teachers have affected students’ academic performance and non-cognitive ability according to the student development framework of the new human capital theory, and how those effects vary among different teacher groups. Results show that while special-contracted teachers have helped improve the academic performance of rural students, their role is limited in improving students’ non-cognitive ability. At the same time, female special-contracted teachers and those without a normal major play an obviously bigger role in raising students’ academic performance. The conclusion is that special-contracted teachers can to some extent help narrow the urban-rural gap in academic performance, but more research needs to be done to better understand their effects on students’ non-cognitive ability. 相似文献