[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Chemistry of persulfates in water and wastewater treatment: A review

http://library.um.ac.id/free-contents/downloadpdf.php/buku/complexation-reactions-in-aquatic-systems-an-analytical-approach-j-buffle-translators-s-p-kounaves-a-kounaves-and-r-s-altman-12623.pdf

Complexation reactions in aquatic systems : an analytical approach / J. Buffle, translators S.P. Kounaves, A. Kounaves and R.S. Altman

Nanotechnology has opened new and exhilarating opportunities for exploring glucose biosensing applications of the newly prepared nanostructured materials. Nanostructured metal-oxides have been extensively explored to develop biosensors with high sensitivity, fast response times, and stability for the determination of glucose by electrochemical oxidation. This article concentrates mainly on the development of different nanostructured metal-oxide [such as ZnO, Cu(I)/(II) oxides, MnO2, TiO2, CeO2, SiO2, ZrO2, and other metal-oxides] based glucose biosensors. Additionally, we devote our attention to the operating principles (i.e., potentiometric, amperometric, impedimetric and conductometric) of these nanostructured metal-oxide based glucose sensors. Finally, this review concludes with a personal prospective and some challenges of these nanoscaled sensors.

/pdf/a-comprehensive-review-of-glucose-biosensors-based-on-ye0vz5ywv7.pdf

A comprehensive review of glucose biosensors based on nanostructured metal-oxides.

Graphene quantum dots (GQDs) that are flat 0D nanomaterials have attracted increasing interest because of their exceptional chemicophysical properties and novel applications in energy conversion and storage, electro/photo/chemical catalysis, flexible devices, sensing, display, imaging, and theranostics. The significant advances in the recent years are summarized with comparative and balanced discussion. The differences between GQDs and other nanomaterials, including their nanocarbon cousins, are emphasized, and the unique advantages of GQDs for specific applications are highlighted. The current challenges and outlook of this growing field are also discussed.

/pdf/recent-advances-on-graphene-quantum-dots-from-chemistry-and-1d6dzbzh6n.pdf

Recent Advances on Graphene Quantum Dots: From Chemistry and Physics to Applications

Electronic tongue as innovative instrument for detection of crocin concentration in saffron (Crocus sativus L.)

Nanocrystals provide a confinement effect for nanoscale engineering. In this work the cadmium selenide quantum dot and its nanoparticle films have been deposited by chemical bath deposition method (CBD). Effects of deposition time, pH and annealing operation on the optical and structural of CdSe nanoparticle film were studied. The energy band gap, structure and morphology of the samples are investigated by X-ray diffraction (XRD), UV-Vis spectrometer and scanning electron microscope (SEM). It was found that the optical band gap, nanoparticle size and thin film configuration are changed by varying pH, deposition time and annealing operation.

Synthesis, characterization and size dependent energy band gap of binary CdSe quantum dot and its nanoparticle film

In this study, for the first time, a simple immunosensor for ultrasensitive recognition of Human Chorionic Gonadotropin (hCG) in serum samples was fabricated by exploiting a simple approach. In this method, a low-cost and sensitive immunosensor was fabricated based on QDs-N-S/Au nanoparticles (NPs) modified Screen-Printed Carbon Electrode (SPCE). It seems that, QDs-N-S/Au NPs/ antibody as a biocomposite can be a good choice for the development of an impressive immunosensor. It must be said that in the modifying of immunosensor the length of the process have been reduced and the use of another substrates have been eliminated. pH and incubation time were optimized as two important parameters. Under the optimal conditions at modified SPCE, a linear communication in the range of 0.1 to 125 pg mL−1 and the detection limit of 12.5 fg mL−1 were obtained. The present procedure was utilized to the detection of hCG in real samples with the desirable results.

http://www.nanochemres.org/article_92929_0aebc1fbd6c7755bc80c0ea0d50aa4cb.pdf

The potentiality of the functionalized nitrogen and thiol-doped graphene quantum dots (GQDs-N-S) to stabilize the antibodies in the designing of human chorionic gonadotropin immunosensor

Bifunctional impedimetric sensors based on azodicarboxamide supported on modified graphene nanosheets.

In the present research the electronic tongue system was proposed consisted of an array of 4 voltammetric sensors to discriminate saffron samples based on the safranal concentration. Different samples were provided by blending saffron samples with distilled water and pure safranal with ethanol. The provided signals by the electronic tongue system were analyzed using the PCA and ANN methods. The total variance among safranal concentrations by PCA method were 90% and 100% in pure safranal and saffron samples, respectively. Also, it was revealed that the electronic tongue could provide good prediction for safranal concentration in saffron as 98.81% accuracy by means of optimized ANN model. Results showed that there are some relationships between HPLC and electronic tongue signals to determine safranal concentration levels in different saffron samples.

Mahmoud Roushani

Papers

Electronic tongue as innovative instrument for detection of crocin concentration in saffron (Crocus sativus L.)

Synthesis, characterization and size dependent energy band gap of binary CdSe quantum dot and its nanoparticle film

The potentiality of the functionalized nitrogen and thiol-doped graphene quantum dots (GQDs-N-S) to stabilize the antibodies in the designing of human chorionic gonadotropin immunosensor

Bifunctional impedimetric sensors based on azodicarboxamide supported on modified graphene nanosheets.

Applications of electronic tongue system for quantification of safranal concentration in saffron (Crocus sativus L.)