01731nas a2200181   4500008004100000022001400041245015100055210006900206260007100275300001400346490000800360520096800368100001801336700002601354700002101380700001801401856013001419       2015                        eng d  a1932-744700aSurface site modulations by conjugated organic molecules to enhance visible light activity of ZnO nanostructures in photocatalytic water splitting0 aSurface site modulations by conjugated organic molecules to enha  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcFEB  a3060-30670 v1193 a<p>Surface modification of ZnO nanoparticles is identified as a method of modulating surface sites advantageously. ZnO nanoparticles of two different sizes are surface modified with a conjugated organic moiety to enable electron conduction and transfer. Enhanced H-2 evolution from water-methanol mixtures was observed in the composite systems compared to pristine ZnO under visible light irradiation without any cocatalyst. The system is also marginally active in water splitting in pure water without any sacrificial agents. Photophysical characterization indicates that even though reducing size into the nanoregime affects the band gap detrimentally, modifications by simple conjugated organic molecules assist in enhanced visible light activity. The experimental observations are corroborated with computational studies, which also point to a localization of valence band maximum of the interface on the organic moiety and conduction band minimum on ZnO.</p>1 aGeorge, Leena1 aSappati, Subrahmanyam1 aGhosh, Prasenjit1 aDevi, Nandini  uhttps://library.ncl.res.in/content/surface-site-modulations-conjugated-organic-molecules-enhance-visible-light-activity-zno-0