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In this work, a sensitive fluorescent sensor for the detection of ciprofloxacin (CIP) was developed by wrapping the surface of CdTe quantum dots (QDs) with molecularly imprinted polymers (MIPs). The MIP@QDs were synthesized via a simple sol–gel method using 3-aminopropyltriethoxysilane (APTES) as the functional monomer and tetraethoxysilane (TEOS) as the crosslinker. The fluorescence emission of the probe was at 643 nm. Linear calibration curves were obtained in the range of 0.5–24 $\mu$M for CIP with the detection limit of 0.23 $\mu$M (S/N$=$3). The fluorescent probe was successfully applied to the determination of CIP in seawater samples with the spiked recoveries ranging from 98.2% to 110.6% and the relative standard deviation (RSD) was less than 10.7%. It is the first time that QDs with molecularly imprinted polymers (MIP@QDs) were introduced for separation and detection of CIP in seawater and obtained good specific identification ability and potential practical value.

This case report describes a patient who experienced closed simultaneous rupture of the left Extensor Pollicis Longus (EPL)-, Extensor Digitorum (ED) and Extensor Digiti Minimi (EDM) tendons.

The removal of CIP from the environment has become a mandatory issue. In our paper, we have realized the visible-light-driven degradation of CIP on the BiVO₄–Bi₂WO₆ nano-heterojunction photocatalysts. The synthesized photocatalysts were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), ultraviolet-visible (UV-Vis) absorption spectra and photoluminescence (PL) spectra. Compared with the single-phase BiVO₄ and Bi₂WO₆ counterparts, BiVO₄–Bi₂WO₆ nano-heterojunction photocatalysts show enhanced photocatalytic degradation activities in visible-light-driven CIP degradation. Particularly, when R_{(Bi2WO6∕BiVO4)} = 10 wt.%, the products exhibit the highest CIP degradation ratio in 60 min of 76.8% under visible light illumination. The tentative mechanism of the interface charge transfer (IFCT) effect in the BiVO₄–Bi₂WO₆ heterojunction structure is also discussed by using the band position calculation.

The preparation of N-doped TiO₂ with excellent photocatalytic performance is reported. The study of the synthesis process involves the control of N-doping and the crystalline phase. The incorporation of urea provides dual features; it introduces a nitrogen source and also reduces the phase transition temperature of anatase to rutile. The optimal N-doped catalyst that possesses both anatase and rutile phases shows excellent catalytic efficiency in the degradation of ciprofloxacin under illumination by visible light and sunlight.

Recently, it has been reported that α-tricalcium phosphate (α-TCP) dental cements containing antibiotics can make good results when used over carious dentine. However, the release behavior of antibiotics and Ca from the cement is not clarified. Therefore, the aim of this study is to examine the in vitro release profile of the antibiotic-containing α-TCP cements. Three kinds of antibiotics (Metronidazole, Cefaclor and Ciprofloxacin) were added to two commercially available α-TCP cements. The set cements were immersed in water at 37°C and the released antibiotics and Ca were determined at regular intervals until three months. The release profile of the antibiotic-containing α-TCP cements was depended on the antibiotics added. The release rate of Ciprofloxacin was not so high in the early stage but it tended to elute continuously for three months, though the release of Metronidazole and Cefaclor reached plateaus within one month. The release rates of Ca from the antibiotic-containing α-TCP cements were higher than that from the control. The amounts of Ca released from Type II were higher than that from Type I. These differences in the release profile between Type I and II cements seemed to reflect the setting reaction of these cements.