Category: 6. Chemistry

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  • Experimental and theoretical investigation of zwitterionic surfactant adsorption on calcite for enhanced oil recovery

    Experimental and theoretical investigation of zwitterionic surfactant adsorption on calcite for enhanced oil recovery

    CMC measurement of ZW4

    The Critical Micelle Concentration (CMC) is the concentration at which surfactant molecules transition from existing as individual units to forming clusters called micelles. Below the CMC, the surfactant molecules remain…

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  • Developing transferable and universal IR biomarkers for intraoperative colorectal cancer diagnosis via FTIR spectroscopy

    Developing transferable and universal IR biomarkers for intraoperative colorectal cancer diagnosis via FTIR spectroscopy

    Spectral variations among different groups and cross studies

    Eight key IR bands were identified in the spectral region between 1000 cm-1 and 1800 cm– 1 (Fig. 1). The bands at 1080 cm– 1 and 1236 cm– 1 are attributed to the symmetric…

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  • Ag/ZnO nanodots from Artemisia austroyunnanensis as antibacterial and anticancer agents against human neuroblastoma cells

    Ag/ZnO nanodots from Artemisia austroyunnanensis as antibacterial and anticancer agents against human neuroblastoma cells

    UV-Vis spectroscopy

    The UV-Vis spectrum of the biogenic Ag/ZnO nanodots showed two distinct absorption peaks at 332 nm and 446 nm (Fig. 1A). The peak at 332 nm corresponds to the excitonic transition of ZnO, confirming the presence of ZnO…

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  • Bubbles nucleation in supersaturated emulsion drops

    Bubbles nucleation in supersaturated emulsion drops

    The nucleation of bubbles in supersaturated fluids has a practical application in carbonated beverages and foamed foods1,2. It has the potential to replace propellants (such as nitrous oxide or carbon dioxide) in aerosol whipped creams3,4, and…

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  • Poor quality of sewage water in Ukraine: a priority in post-war rebuilding

    Poor quality of sewage water in Ukraine: a priority in post-war rebuilding

    To address the discussion of sewage water compliance with regulation requirements hereafter authors use ‘Me: MPC’ indicator on figures, estimated as ratio of found metal concentration to its correspondent MPC value (Table 3), e.g.

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  • Unraveling the NLO potential of isoquinoline functionalized chromophores via molecular modeling using DFT/TD-DFT approaches

    Unraveling the NLO potential of isoquinoline functionalized chromophores via molecular modeling using DFT/TD-DFT approaches

    The synthesized parent chromophore 5,6-diphenylbenzol[4,5]imidazo[2,1-a]isoquinoline (DPBI) is designed into the reference chromophore (MPBIR) by replacing one of the phenyl group with methyl group to reduce steric hindrance and lesser the…

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  • Preparation and characterization of biodegradable cellulose nanofiber films modified with methylene blue and vitamin C for detecting oxidants

    Preparation and characterization of biodegradable cellulose nanofiber films modified with methylene blue and vitamin C for detecting oxidants

    In this study, the response surface method was used to investigate the effect of independent variables (MB amount and VC amount) on dependent variables (thickness, mechanical properties, moisture and WVP). Table 4 shows mathematical models…

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  • Improved performance of carbon-based perovskite solar cells using a multi-walled carbon nanotubes/Zn(COO)2 nanocomposite

    Improved performance of carbon-based perovskite solar cells using a multi-walled carbon nanotubes/Zn(COO)2 nanocomposite

    The FTIR spectra of the precursor, zinc oxalate dihydrate, were recorded in the range of 4000–400 cm−1 (see Fig. 1a). A broad absorption band at 3428–3104 cm⁻1 is attributed to the ν(O–H) stretching mode. Other notable bands include…

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  • Researchers demonstrate how intense electric fields from peeling tape create ‘microlightning’ that can drive chemical reactions

    Researchers demonstrate how intense electric fields from peeling tape create ‘microlightning’ that can drive chemical reactions

    The intense electric fields generated by peeling tape can produce ‘microlightning’ that can ionise reactants and drive chemical reactions, researchers in China and the US have shown.1 The researchers believe this demonstrates the…

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