PMID- 36555570 OWN - NLM STAT- MEDLINE DCOM- 20221226 LR - 20221227 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 23 IP - 24 DP - 2022 Dec 14 TI - Facet-Dependent SERS Activity of Co(3)O(4). LID - 10.3390/ijms232415930 [doi] LID - 15930 AB - Surface-enhanced Raman spectroscopy (SERS) is an ultra-sensitive and rapid technique that is able to significantly enhance the Raman signals of analytes absorbed on functional substrates by orders of magnitude. Recently, semiconductor-based SERS substrates have shown rapid progress due to their great cost-effectiveness, stability and biocompatibility. In this work, three types of faceted Co(3)O(4) microcrystals with dominantly exposed 100 facets, 111 facets and co-exposed 100-111 facets (denoted as C-100, C-111 and C-both, respectively) are utilized as SERS substrates to detect the rhodamine 6G (R6G) molecule and nucleic acids (adenine and cytosine). C-100 exhibited the highest SERS sensitivity among these samples, and the lowest detection limits (LODs) to R6G and adenine can reach 10(-7) M. First-principles density functional theory (DFT) simulations further unveiled a stronger photoinduced charge transfer (PICT) in C-100 than in C-111. This work provides new insights into the facet-dependent SERS for semiconductor materials. FAU - Feng, Yibo AU - Feng Y AD - Beijing Key Laboratory and Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China. FAU - Wang, Jiaxing AU - Wang J AD - Beijing Key Laboratory and Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China. FAU - Hou, Jixiang AU - Hou J AD - Beijing Key Laboratory and Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China. FAU - Zhang, Xu AU - Zhang X AD - Beijing Key Laboratory and Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China. FAU - Gao, Yuhang AU - Gao Y AD - Beijing Key Laboratory and Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China. FAU - Wang, Kaiwen AU - Wang K AUID- ORCID: 0000-0002-1046-4525 AD - Beijing Key Laboratory and Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China. LA - eng GR - 12009015202001/National Natural Science Foundation of China/ PT - Journal Article DEP - 20221214 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (cobalt tetraoxide) SB - IM MH - *Metal Nanoparticles/chemistry MH - Spectrum Analysis, Raman/methods MH - Semiconductors PMC - PMC9788474 OTO - NOTNLM OT - Co3O4 OT - DFT simulation OT - SERS OT - facet-dependent COIS- The authors declare no conflict of interest. EDAT- 2022/12/24 06:00 MHDA- 2022/12/27 06:00 PMCR- 2022/12/14 CRDT- 2022/12/23 01:35 PHST- 2022/11/26 00:00 [received] PHST- 2022/12/09 00:00 [revised] PHST- 2022/12/12 00:00 [accepted] PHST- 2022/12/23 01:35 [entrez] PHST- 2022/12/24 06:00 [pubmed] PHST- 2022/12/27 06:00 [medline] PHST- 2022/12/14 00:00 [pmc-release] AID - ijms232415930 [pii] AID - ijms-23-15930 [pii] AID - 10.3390/ijms232415930 [doi] PST - epublish SO - Int J Mol Sci. 2022 Dec 14;23(24):15930. doi: 10.3390/ijms232415930.