| 학회 | 한국재료학회 |
| 학술대회 | 2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 | 26권 1호 |
| 발표분야 | G. 나노/박막 재료 분과 |
| 제목 | Anion intercalated ZnAl-layered double hydroxide nanostructures grown by a low-temperature hydrothermal method |
| 초록 | Layered Double Hydroxides (LDHs) have received great attention due to its large specific surface area, high electrocatalytic characteristics. In particular, LDHs have the advantage of being able to easily control physical and chemical properties depending on the type and combination of exchangeable interlayer anions. Its novel properties allow LDHs to be used as a multifunctional material such as photoelectric energy conversion, electrochemical catalysts, and sensor active layers, etc. Among the LDHs, ZnAl-LDH is one of the promising materials due to its wide band gap, low cost, environmental friendliness and good bendability. However, ZnAl-LDHs in some researches show mixed properties due to two or more than types of interlayer anions. This coexistence of different types of anions makes it difficult to quantify the characteristics and performance of ZnAl-LDH as a device. So many researches have been conducted on obtaining single anion intercalated ZnAl-LDH through anion exchange method. However, most of them have limits of incomplete intercalation or powder form, which makes actual devices application difficult. Herein, we tried to fabricate only single anion intercalated ZnAl-LDH as a 2D film type via several methods ranging from synthesis to post-processing. We used two-steps low-temperature hydrothermal synthesis on silicon substrates, which includes the deposition of an Al thin film as seed layer and a low-temperature hydrothermal synthesis for the main LDH growth. After synthesis, The structural properties of ZnAl-LDHs were observed by field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD) and optical properties were investigated by UV-visible absorption spectroscopy. Acknowledgement This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2018R1A2B6006968). |
| 저자 | Geon-Hyeong Kang1, Ba-Da On2, Sang-Seok Lee1, Il-Kyu Park2 |
| 소속 | 1Department of Materials Science and Engineering, 2Seoul National Univ. of Science and Technology |
| 키워드 | Layered Double Hydroxides; Anion Intercalation; Hydrothermal Growth; Two-dimensional Nanostructure |
