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In the research field of alternative energy, perovskite oxides remain one of the prominent classes of electrocatalysts because of their outstanding compositional and chemical versatility, tuneable catalytically active centers, and structural robustness leading to operational stability. However, their routine high‐temperature synthesis curbs the available active sites, and consequently, there is an ongoing urge to mend the perovskite oxides towards dimensionally reduced forms which can endow maximum surface‐active sites to accelerate the redox processes. Despite the burgeoning interests, research in this field barely began in the last decade. This review highlights some of the relevant literature findings, and rationalizes the limitations, and benefits of developing two‐dimensional (2D) nanostructures of electrocatalytically active perovskite oxides. Furthermore, the roadblocks of the current approaches for wide‐stretched adaptability and standing gaps to counter such bottlenecks are discussed. [ABSTRACT FROM AUTHOR]

The current study was focused on the investigation of anticancer activity of Scindapsus Officinalis fruit extract embedded silver nanoparticles (So -AgNPs) followed by anticovid activity prognosis of major phytocompounds, which participate in nanoformulation synthesis. The synthesis process involved the addition of AgNO 3 solution (1 mM) and color change of the extract from light brown to dark, confirmed the formation of silver nanoparticles. Further, the characterization of synthesized So -AgNPs were done using different spectroscopical and microscopical techniques. FTIR spectra of So-AgNPs indicated vibrational peaks of polyphenolic hydroxyl groups, which are responsible for the stabilization of nanoformulation. Others microscopy methods such as SEM, TEM, XRD, and EDX illustrated that the synthesized So-AgNPs consist irregular size, spherical shape and thoroughly dispersed above the plane. Anticancer evaluation illustrated that the So-AgNPs have dose dependent anti-breast and anti-hepatic cancer activity (range of 97.72 ± 0.42–54.86 ± 0.46% cell viability), which were noticed more effective than raw fruit extract of Scindapsus Officinalis. The computational anticovid prediction of major phyto-compound of the extract [which designate as inhibitor 1: ((2R,3S,4S, 5R)-2-(hydroxymethyl)-6-(((1S, 5S)-1-methyl-5-(2-methylprop-1-en-1-yl)cyclopent-2-en-1-yl)oxy)tetrahydro-2H-pyran-3,4,5-triol)] illustrated moderate tendency to interact with corona main protease enzyme (expected pIC > 6 μM). However, the molecular docking and dynamics studies showed that selected compounds have moderate tendency to interact human dihydrofolate reductase and topoisomerase 1 enzyme. The accomplished approach shows that So -AgNPs with adsorbed phytocompounds on its surface consist valuable experimentally proved anticancer potency and computationally predicted anticovid effect. Thus, the formulation can be used as an alternative to the covid infected cancer population. [Display omitted] •Green synthesis of Scindapsus Officinalis stabilized silver nanoparticles. • So -AgNPs showed significant activity against r cancer cells. • SO-AgNPs shows significant specificity and nontoxic effect against two non-cancerous cell lines. [ABSTRACT FROM AUTHOR]

Five-fold intertwined Ag x Ni 1-x (x=0.01-0.25) heterogeneous alloy nanocrystal (NC) catalysts, prepared through unique reagent combinations, are presented. With only ca. 5 at % Ag (AgNi-5), Pt-like activity has been achieved at pH 14. To reach a current density of 10 mA cm -2 the extremely stable AgNi-5 requires an overpotential of 24.0±1.2 mV as compared to 20.1±0.8 mV for 20 % Pt/C, both with equal catalyst loading of 1.32 mg cm -2 . The turnover frequency (TOF) is as high as 2.1 H 2  s -1 at 50 mV (vs. RHE). Site-specific elemental analyses show the Ag:Ni compositional variation, where the apex and edges of the decahedra are Ag-rich, thereby exposing Ni onto the faces to achieve maximum charge transport for an exceptional pH universal HER activity. DFT calculations elucidate the relative H-atom adsorption capability of the Ni centers as a function of their proximity to Ag atom., (© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)