ZIF-8 has been synthesized with methanol solvent at room temperature (25-30°C), with molar composition of zinc nitrate: 2-methylimidazolate: TEA = 1: 4: 4. Furthermore, ZIF-8 has been synthesized using filtrate from synthesis. Repetition of ZIF-8 synthesis using filtrate from synthesis has been done for six times. The produced samples were investigated using XRD, FT-IR and SEM. XRD pattern showed that ZIF-8 which have been synthesized using reuse filtrate has same peaks with ZIF-8 from first synthesized. FTIR spectra of ZIF-8 showed a peak at 422 cm−1 which indicated the presence of zinc bonded to the nitrogen in ZIF-8. Besides SEM analysis of ZIF-8 particles size whit are synthesized using MeOH and reuse filtrate have yielded that ZIF-8 micropore size. The results showed that the synthesis of ZIF-8 using reuse filtrate was succesfully carried out.
School laboratory facilities are one of the supporting facilities in the teaching and learning process. Laboratory conditions must be the suitability with the standards set by the government. The purpose of this study was to analyze the problem of the students in laboratory use in chemistry learning. The problems studied in this research were related to the problems of the students when using laboratories in chemistry learning. This research used a qualitative descriptive approach, with the sample used were students from several high schools in Aceh Barat Daya district. Data collection using questionnaires, interviews, and observation sheets. The results of this study indicate that the use of laboratories in chemistry learning activities in the schools has not been optimal. Laboratory facilities, as well as supporting facilities and infrastructure for practicum activities, are not yet fully available. The absence of competent laboratory assistants in designing the implementation of practicum in the laboratory. The solution offered in answering the above problems is by providing training to the teachers and laboratory assistants on basic laboratory techniques and laboratory management techniques as well as developing motivation of teachers and students in conducting practicum activities by providing practical training in accordance with the expected competencies.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.