SERS investigation of ciprofloxacin drug molecules on TiO2 nanoparticles
Literature Information
Xiaoyu Qin, Mengdi Gong, Di Yin, Yingjiu Zhang, Bing Zhao
In this paper, TiO2 nanoparticles (NPs) with different crystallinity served as SERS-active substrates for SERS detection of ciprofloxacin (CIP) drug molecules for the first time. CIP is close to the surface of the TiO2 substrate through the carboxyl group. The mutual SERS enhancement behaviors between CIP molecules and TiO2 NPs were discovered, which are attributed to the contribution of the TiO2-to-molecule charge-transfer mechanism. The crystallinity of TiO2 NPs, the pH value of adsorption solution and the adsorption time have significant influences on the interaction and the SERS behavior between CIP and TiO2. When the calcination temperature of TiO2 NPs is 450 °C, the pH value of adsorption solution is 6 and the adsorption time is 9 h, the CIP molecules on TiO2 NPs exhibit the largest SERS enhancement.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.
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![4-Chloro-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine structure 4-Chloro-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine structure](https://static.chemtradehub.com/structs/869/869335-75-1-a9d0.webp)

![6-Benzyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridin-3(2H)-one structure 6-Benzyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridin-3(2H)-one structure](https://static.chemtradehub.com/structs/909/909187-64-0-f54f.webp)
