Browsing by Author "Srivastava, S"

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    Immune Modulatory Effects of Ketogenic Diet in Different Disease Conditions
    (2022-12) Srivastava, S; Sharma, K; Tyagi, A
    Interceding nutrients have been acquiring increased attention and prominence in the field of healing and deterrence of various disorders. In this light, the present article encompasses several facets of ketogenic diet as an immunomodulator with respect to its expansive clinical applications. Accordingly, several scientific records, models, and case histories, including viral infections, cancer, chronic diseases, e.g., cardiovascular diseases, epilepsy, as well as numerous other neuro-disorders, are assembled, revealing a profound influence of KD in favor of improvement in the patient’s condition. We accentuate possible manifold mechanisms of KD that require further exploration.
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    Photocatalytic Properties of Anisotropic β-PtX2 (X= S, Se) and Janus β-PtSSe monolayers
    (2022-08) Jamdagni, P; Kumar, A; Srivastava, S
    The highly efficient photocatalytic water splitting to produce clean energy requires novel semiconductor materials to achieve high solar-to-hydrogen energy conversion efficiency. Herein, the photocatalytic properties of anisotropic β-PtX2 (X=S, Se) and Janus β-PtSSe monolayers are investigated based on density functional theory. Small cleavage energy for β PtS2 (0.44 J/m2) and β-PtSe2 (0.40 J/m2) endorses the possibility of their mechanical exfoliation from respective layered bulk material. The calculated results find β-PtX2 monolayers to have an appropriate bandgap (~1.8-2.6 eV) enclosing the water redox potential, light absorption coefficients (~104 cm-1), and excitons binding energy (~0.5-0.7 eV), which facilitates excellent visible-light driven photocatalytic performance. Remarkably, an inherent structural anisotropy leads to the anisotropic and high carrier mobility (up to ~5 x 103 cm2V−1S−1) leading to fast transport of photogenerated carriers. Notably, the small required external potential to derive hydrogen evolution reaction and oxygen evolution reaction processes with an excellent solar to-hydrogen energy conversion efficiency of β-PtSe2 (~16%) and β-PtSSe (~18%) makes them promising candidates for solar water splitting applications.