Parası kalmadığı için otobüse binemiyordur ailesi porno izle ona daha yeni para gönderdiği için tekrar porno istemeye utanınca mecburen otostop çekmek için youporn çantasını alarak yol kenarına gelir etekli porno liseli türk kız yol kenarında dururken yanına yaklaşan porno kibar bir gencin onu gideceği yere kadar bırakmak porno izle istemesine çok mutlu olur arabaya bindiklerinde gideceği yer ile porno arabayı kullanan adamın gittiği yer arasında çok mesafe sex izle farkı olduğunu anlayan türk kız bu yaptığı porno indir iyilik karşısında arabada ona memelerini açar porno sapıklaşan adam yol kenarındaki hotelde durarak porno izle üniversiteli otostop çeken türk kızına odada sakso çektirip sikerGreen Synthesis of Zinc Oxide and Hydrogenated Zinc Oxide Catalysts| Abstract

7187379870

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Abstract

Green Synthesis of Zinc Oxide and Hydrogenated Zinc Oxide Catalysts

Author(s): James D Onubun, Joshua L Konne and Grace A Cookey

A novel green synthesis of zinc oxide catalysts using zinc nitrate, aqueous extract of plantain peel ash (for ZnO-PT control experiment) with hydrogen gas (for hydrogenated zinc oxide, ZnO-PTH) has been reported. The samples were characterized using XRD, SEM, EDS, UV and FT-IR. The XRD patterns of both samples showed characteristic reflections of ZnO with broader background for ZnO-PTH. Particle size estimations gave 50.67 and 52.93 nm for ZnO-PT and ZnO-PTH respectively. The SEM micrographs of ZnO-PH showed porous monophasic rod-like and rectangular polycrystallite plates while ZnO-PTH appeared largely biphasic (greyish and cloudy-patches) with larger pores. The EDS analysis showed Zn contents of both phases as approximately 50% and 56% in ZnO-PT and ZnO-PTH respectively. The UV-Vis of ZnO-PT nanoparticles in ethanol also showed different strong absorption bands at 310 nm, 330 nm and 360 nm while ZnO-PTH showed only at 320 nm in the UV region and two others at 580 nm and 620 nm in the visible region. Similarly, the FT-IR showed decrease in the wave number of bands (blue shift) for corresponding ZnO-PTH bands due to hydrogenation that caused ligand-metal charge transfer (LMCT). The results confirmed the formation of Zn1-xO (ZnO-PT) and ZnO1-x (ZnO-PTH) phases respectively.


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Materials Science: An Indian Journal received 337 citations as per Google Scholar report

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