02037nas a2200169   4500008004100000245008100041210006900122260000900191300001600200490000700216520143400223100002201657700002201679700002901701700002601730856011101756       2021                        eng d00aEnhanced photocatalytic properties of a chemically modified blue phosphorene0 aEnhanced photocatalytic properties of a chemically modified blue  cAPR   a13348-133580 v113 a<p>It is high time to placate the peak demand for an efficient, economic and green fuel in the form of H-2 through photocatalytic water splitting. Several low dimensional materials have been explored for their photocatalytic properties on account of their surface to volume ratio. The present study illustrates the excellent photocatalytic potential of a two-dimensional material, viz. a chemically tempered blue-phosphorene sheet, with single atom thickness and high carrier mobility. Metal-free element, sulphur, is explored as a dopant in a 32-atom blue-phosphorene sheet. The dopant is inserted at three locations viz. central, edge and central edge positions with varying concentrations from 3.125% to 18.75% (corresponding to n = 1 to 6 sulphur atoms within a 32-atom blue-phosphorene sheet, P32-nSn). The cohesive energy studies predict the higher stability of even number S doped sheets as compared to their odd counterparts. Photocatalytic activity is studied in terms of band gap and band alignment for different concentrations of the former. Studies reveal that edge doping demonstrates better water molecule activation independent of S atom concentration. The edge doped systems not only provide the chemical activity to activate water, but also show feasible HER overpotentials of 1.24-1.29 eV at neutral medium. Finally, this work opens up a driving lead of non-corrosive catalysts for water molecule splitting.</p>1 aMaibam, Ashakiran1 aDas, Sawan, Kumar1 aSamal, Pragnya, Paramita1 aKrishnamurty, Sailaja  uhttps://library.ncl.res.in/content/enhanced-photocatalytic-properties-chemically-modified-blue-phosphorene