| Title |
Study of the quantitative composition of the cobalt sulfide Layers on the polyamide 6 surface / |
| Authors |
Vaičiukynaitė, K ; Žalenkienė, S ; Ivanauskas, R |
| DOI |
10.15388/CCT.2023 |
| ISBN |
9786090708330 |
| Full Text |
|
| Is Part of |
Chemistry and chemical technology: international conference CCT-2023, March 10, 2023, Vilnius: conference book.. Vilnius : Vilnius university press, 2023. P 084, p. 121.. ISBN 9786090708330 |
| Abstract [eng] |
In the face of energy degradation and global warming, there is an urgent need to develop new clean and efficient energy storage devices [1]. Transition-metal sulfides have been considered as an important material to create efficient and stable photoelectric catalysts because of their exceptional properties and distinctive structures. Over the past few years, they have been used not only in photoelectric catalysis but also in energy storage [2]. The material composition of the supercapacitor electrode has a significant influence on its capacity characteristics. In contrast with metal oxide electrode materials, transition metal sulfides have more abundant raw materials, higher theoretical capacity and low cost. Cobalt sulfide has attracted the attention of scientists due to its high specific capacity, low toxicity and simple synthesis. However, different morphologies and structures have a great impact on the performance of electrode materials [1]. Therefore, it is very important to know the quantitative and qualitative composition of the compounds obtained. The purpose of this work was to investigate the quantitative composition of the cobalt sulfide layers obtained on the polyamide 6 (PA) surface. At the beginning of the experiment, PA 6 films were boiled in distilled water for 2 h. Subsequently, PA 6 films were kept in pentathionic acid (H2S5O6) for 1.0 to 5.0 h at room temperature. After interaction with acid, the samples were treated with the 0.16 mol × dm–3 solution of cobalt sulfate, (CoSO4⋅7H2O) for 10 minutes at different temperatures – 60, 70 and 80 ºC (5 samples for each temperature). After the formation of cobalt sulfide layers on PA 6 surfaces, films were investigated using atomic absorption spectroscopy (AAS) and electron dispersion spectroscopy (EDS). The results of the EDS analysis confirmed the presence of sulfur and cobalt elements. It was noticed that the peaks of both sulfur and cobalt elements are particularly intense in the sample that was sulfurized the longest and stored in a cobalt salt solution at the highest temperature. AAS analysis showed a clear trend of increasing cobalt concentration depending on the temperature of the solution - the higher the temperature, the higher the Co concentration. |
| Published |
Vilnius : Vilnius university press, 2023 |
| Type |
Conference paper |
| Language |
English |
| Publication date |
2023 |
| CC license |
|
