Highly efficient and convenient QuEChERS using ZIF-67 derived magnetic nanoporous carbon for determination of carbamate pesticides in various vegetable and fruit samples.

Effective and convenient QuEChERS of lipophilic pesticides with wide pK range from strongly pigment-rich food samples remains a great challenge. Here, a ZIF-67 derived magnetic nanoporous carbon (Co@MPC) was firstly proposed for modified QuEChERS of carbamate pesticides (pK 4.3-12.

Ecofriendly and biocompatible biochars derived from waste-branches for direct and efficient solid-phase extraction of benzodiazepines in crude urine sample prior to LC-MS/MS.

Biochars (BCs) derived from waste-branches of apple tree, grape tree, and oak were developed for direct solid-phase extraction (SPE) of five benzodiazepines (BZDs) in crude urine samples prior to liquid chromatography-tandem mass spectrometry (LC-MS/MS) determination. Scanning electron microscopy, elemental analyzer, X-ray diffractometry, N adsorption/desorption experiments, and Fourier transform infrared spectrometry characterizations revealed the existence of their mesoporous structure and numerous oxygen-containing functional groups. The obtained BCs not only possessed high affinity towards BZDs via π-π and hydrogen bond interactions, but also afforded the great biocompatibility of excluding interfering components from undiluted urine samples when using SPE adsorbents.

Enhanced electrochemiluminescence of dual-defect graphite carbon nitride for ultrasensitive detection of CEA.

Herein, a dual-defective graphite carbon nitride (DDCN) was prepared by polymerization under N atmosphere combined with oxidation treatment. The luminous intensity of dual-defect graphite phase carbon nitride based on defect state luminescence is significantly improved compared to CN-air. On this basis, a biosensor for CEA detection was constructed based on specific immunobinding of antigen-antibody.

Self-assembled FeO-NH @g-CN composite for magnetic solid-phase extraction of benzophenones in sea water and lake water coupled with LC-MS/MS determination.

Magnetic solid-phase extraction (MSPE) was developed based on a well-designed FeO-NH @g-CN nanocomposite as sorbent for a mixture of six benzophenones (BPs) in environmental water samples. The composite fabricated via in-situ self-assembled g-CN shell with homogeneous polymerization of cyanuric chloride and cyanuric acid on FeO-NH core. While high adsorption capacity was derived from g-CN via hydrophobic, π-π and hydrogen bonding interactions to the targets, the fast magnetic separation was realized with FeO core for less solvent consumption.

A review on ZnS-based photocatalysts for CO reduction in all-inorganic aqueous medium.

Photocatalytic CO reduction mimics natural photosynthesis, which is a potential technology for "carbon neutrality". This article will review the recent research progress of a class of distinguished photocatalytic CO reduction systems based on ZnS nanocrystal photocatalysts. We will focus on the pathway of maximizing the photoreduction rate of CO by continuously optimizing the catalyst design and the composition of the reaction medium.

A rod-like melem with high fluorescence quantum yield for sensitive detection of reduced glutathione.

A rod-like melem with high fluorescence quantum yield of 71.3 % was prepared in this work to enhance the chemiluminescence (CL) intensity of NaSO-Ce (Ⅳ) system. The results showed that the CL intensity of NaSO-Ce (Ⅳ) system could be increased by 350 times based on chemiluminescence resonance energy transfer (CRET) mechanism.

Au Modified F-TiO for Efficient Photocatalytic Synthesis of Hydrogen Peroxide.

In this work, Au-modified F-TiO is developed as a simple and efficient photocatalyst for HO production under ultraviolet light. The Au/F-TiO photocatalyst avoids the necessity of adding fluoride into the reaction medium for enhancing HO synthesis, as in a pure TiO reaction system. The F modification inhibits the HO decomposition through the formation of the ≡Ti-F complex.

[Zoledronate regulates osteoclast differentiation and bone resorption in high glucose through p38 MAPK pathway].

Objective: To investigate the effect of zoledronate (ZOL) on osteoclast differentiation and bone resorption under high glucose, and the regulation mechanism of p38 mitogen activated kinase (p38 MAPK) signaling pathway in this process.

Methods: RAW264.7 cells were divided into four groups: low group, high group, low+ZOL group and high+ZOL group after induced into osteoclasts.

A β-cyclodextrin Modified Graphitic Carbon Nitride with Au Co-Catalyst for Efficient Photocatalytic Hydrogen Peroxide Production.

Photocatalytic hydrogen peroxide (HO) production has attracted considerable attention as a renewable and environment-friendly method to replace other traditional production techniques. The performance of HO production remains limited by the inertness of graphitic carbon nitride (CN) towards the adsorption and activation of O. In this work, a photocatalyst comprising of β-cyclodextrin (β-CD)-modified CN with supporting Au co-catalyst (Au/β-CD-CN) has been utilized for effective HO production under visible light irradiation.

A novel "turn-on" fluorescent sensor for hydrogen peroxide based on oxidized porous g-C N nanosheets.

An oxidized, porous graphitic carbon nitride nanosheets (CNNs) was successfully obtained via a bottom-up approach. The inner filter effect (IFE) of Fe (III) tetrakis (1-methyl-4-pyridyl) porphyrin pentachlorideporphyrin pentachloride (FeTMPyP) on the CNNs results in fluorescence quenching of the CNNs due to the overlap of FeTMPyP absorbance band and CNNs emission band. It is interesting that the quenched fluorescence could be "turned on" in response to the participation of H O , which caused by decomposition of FeMPyP.

A hybrid material composed of graphitic carbon nitride and magnetite (FeO) for magnetic solid-phase extraction of trace levels of hydroxylated polycyclic aromatic hydrocarbons.

Magnetic carbon nitride composites were synthesized via a solvothermal reaction and developed as an effective adsorbent for magnetic solid-phase extraction of trace hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) from urine samples prior to their determination by HPLC. The sorbent was characterized by Fourier transform infrared spectrometry, X-ray diffractometry, scanning electron microscopy, vibrating sample magnetometry and solvent stability experiments. The adsorption of hydroxy-PAHs is better by a factor or 20 to 49 compared to bare FeO and comparable that of a commercial C sorbent.

Correction to: Self assembly and controlled drug release of a nano-laminated graphite carbon nitride/methotrexate complex.

The original version of this article unfortunately contained a mistake. In the Abstract section the sentence "Furthermore, the drug release mechanism was investigated by kinetic models and a first-order relationship was concluded, which indicated that the drug release is a simple diffusion process cohydroxyapatite/methotrexate complexntrolled by gradient drug concentration." was wrong.

Self assembly and controlled drug release of a nano-laminated graphite carbon nitride/methotrexate complex.

In this study, g-CN/methotrexate (g-CN/MTX) nanohybrids were obtained via a self assembly method. XRD and TEM demonstrated that bulk g-CN had been stripped into thin nanosheets with size range of 150-250 nm. FTIR investigation indicated that the self assembly of the hybrid was attributed to the hydrogen bond between g-CN nanosheets and MTX molecules.

Engineering photoluminescent and magnetic lamellar hydroxyapatite by facile one-step Se/Gd dual-doping.

The design and synthesis of multifunctional hydroxyapatite (HAp) nanoparticles are important in expanding their clinical applications. Herein we report a novel selenium (Se) and gadolinium (Gd) dual-doped lamellar hydroxyapatite (L-HAp-Se-Gd) produced by facile one-step template-assisted synthesis. The results show that the as-prepared L-HAp-Se-Gd nanoparticles exhibit obvious changes in morphology, dimensions, and crystallinity as compared to bare L-HAp.

Magnetic Lamellar Nano-Hydroxyapatite as a Vector for Gene Transfection in Three-Dimensional Cell Culture.

Compared to two-dimensional (2D) conditions, investigation on gene transfection in three-dimensional (3D) conditions is much less extensive. In this work, lamellar nano-hydroxyapatite (L-HAp) with and without magnetism were used as the vectors and gene transfection in 2D and 3D cell culture was carried out and compared. We found that the transfection efficiency in 3D conditions was much higher than 2D cell culture.

Morphology effect of nano-hydroxyapatite as a drug carrier of methotrexate.

In this study, morphology effect of nano-hydroxyapatite as a drug carrier was investigated for the first time. Hydroxyapatite/methotrexate (HAp/MTX) hybrids with different morphologies were successfully prepared in situ using polyethylene glycol (PEG) as a template. SEM, TEM, XRD and FTIR results confirmed that the hybrids of different morphologies (laminated, rod-like and spherical) with similar phase composition and functional groups were obtained by changing the preparation parameters.

Mechanical properties and cytotoxicity of nanoplate-like hydroxyapatite/polylactide nanocomposites prepared by intercalation technique.

Hydroxyapatite (HAp) in the forms of fiber, needle, and whisker has been employed as fillers in polymer composites. Herein, nanoplate-like HAp synthesized by template-assisted self-assembly was used to reinforce polylactide (PLA) nanocomposites via the solution intercalation method. Dynamic and static mechanical properties and cytotoxicity of the as-prepared HAp/PLA nanocomposites were assessed in addition to characterizations by XRD, FTIR, and TGA.

The inhibition of lamellar hydroxyapatite and lamellar magnetic hydroxyapatite on the migration and adhesion of breast cancer cells.

Hydroxyapatite nanoparticles have been reported to exhibit potent anti-tumor effects in some cancer cells. In our previous study, we have successfully synthesized two types of hydroxyapatite nanoparticles, laminated hydroxyapatite (L-HAp) and laminated magnetic hydroxyapatite (LM-HAp). In this study, we wanted to investigate the effects of L-HAp and LM-HAp with various concentrations on human breast cancer MDA-MB-231 cells.