02155nas a2200241   4500008004100000022001400041245009200055210006900147260006900216300001000285490000800295520127300303653003601576653002401612653001801636653001901654100002201673700002301695700002601718700002001744700002401764856012501788       2009                        eng d  a1010-603000aChlorophyll-based photocatalysts and their evaluations for methyl orange photoreduction0 aChlorophyllbased photocatalysts and their evaluations for methyl  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAY  a83-890 v2043 a<p>Immobilization of chlorophyll on different functionalized mesoporous materials has been attempted. The replacement of butanediol with monoethanol amine has resulted in increase in chlorophyll loading by a factor of two. The maximum immobilization of chlorophyll was on MCM-41 functionalized with monoethanolamine MCM-41/MEA/Chl) as compared to other mesoporous materials. This material has been characterized using XRD, UV-vis diffuse reflectance spectroscopy, scanning electron microscopy (SEM-EDX) and fluorescence spectroscopy. The photocatalytic reduction of methyl orange (MO)was studied using MCM-41/MEA/Chl as photocatalyst under the visible light. The photocatalytic reduction of MO was 0.396 mg/g of MCM-41/MEA/Chl photocatalyst as compared to 0.508 mg/g of TiO(2) for that of Degussa P-25 photocatalyst. The effect of various operating parameters like catalyst loading, initial concentration and intensity of light has also been studied. Photocatalytic property of chlorophyll-based photocatalytic material indicates that chlorophyll acts as a reaction center, which absorbs visible light and generates electron, which is transferred to different electron acceptors reducing MO into derivative of hydrazine. (C) 2009 Elsevier B.V. All rights reserved.</p>10aChlorophyll-based photocatalyst10aMesoporous material10aMethyl orange10aPhotoreduction1 aJoshi, Meenal, M.1 aKamble, Sanjay, R.1 aLabhsetwar, Nitin, K.1 aParwate, D., V.1 aRayalu, Sadhana, S.  uhttps://library.ncl.res.in/content/chlorophyll-based-photocatalysts-and-their-evaluations-methyl-orange-photoreduction-0