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Yunhua Li; Weizhong Liao; Cuixue Chen; Meiling Ye; Alexander Luis Imbault – Journal of Chemical Education, 2023
The electrolysis of water to produce hydrogen is a critical step in many green chemistry processes. The key to the efficiency of water electrolysis is the synthesis of an appropriate electrocatalyst. Three-dimensional (3D) printing is an increasingly important part of many industrial processes. In this study, we propose an efficient laboratory…
Descriptors: Printing, Computer Peripherals, Educational Technology, Chemistry
Ledesma, Claudia Martins; Krepsky, Larissa Mascarenhas; Borges, Endler Marcel – Journal of Chemical Education, 2019
Here, students determine the total phenolic content in beers using the Folin-Ciocalteu assay. The Folin-Ciocalteu reagent is a yellow complex, in an alkaline medium; it reacts with phenols and non-phenolic reducing substances to form a blue complex. Quantitative analysis was carried out using absorbance measured at 765 nm (standard method) and…
Descriptors: Science Instruction, Science Experiments, Chemistry, College Science