Thermal and plasma synthesis of metal oxide nanoparticles from MOFs with SERS characterization

Bing Han Li, Tsung Han Yu, Cheng Yu Weng, Chung Chun Yang, Chia Her Lin*, Szetsen Lee

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

9 引文 斯高帕斯(Scopus)

摘要

Aluminum oxide (Al2O3) and chromium oxide (Cr2O3) nanoparticles were synthesized by thermolysis of metal-organic frameworks (MOFs). Further O2 plasma treatment is required to obtain high crystalline quality metal oxides. The composition and morphology of metal oxide nanoparticles were confirmed by powder X-ray diffraction and scanning electron microscopy characterization, respectively. The quality of synthesized metal oxides was also examined by observing the surface-enhanced Raman scattering (SERS) spectra of methyl orange adsorbed on Al2O3 and Cr2O3. The observed SERS effect can be ascribed to charge-transfer (CT) resonance effect between methyl orange and metal oxide surfaces. UV-vis absorption spectra and DFT calculations of metal oxide- methyl orange complexes have confirmed that the observed SRS effect is due to CT resonance between the metal oxide nanoparticles and the adsorbed methyl orange molecules.

原文英語
頁(從 - 到)146-152
頁數7
期刊Vibrational Spectroscopy
84
DOIs
出版狀態已發佈 - 2016 5月 1
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ASJC Scopus subject areas

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