Gurbani, N.N.GurbaniHan, C.-P.C.-P.HanMarumoto, K.K.MarumotoLiu, R.-S.R.-S.LiuChoudhary, R.J.R.J.ChoudharyChouhan, N.N.Chouhan2019-07-312019-07-312018https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064815877&doi=10.1021%2facsaem.8b00552&partnerID=40&md5=6908316c560c90d5387db42aaa9497bdhttps://scholars.lib.ntu.edu.tw/handle/123456789/415898Here, we present the reduction of the graphene oxide (GO) sheets by means of the two reducing agents, i.e., ascorbic acid and lemon juice. As-prepared carbonaceous substances (rGO-AA and rGO-Lemon) exhibits good room temperature (RT) ferromagnetism even in absence of d- and f-electrons as well as they show good hydrogen generation capacity via photocatalytic water splitting. The amount of H2 evolved for Pt/GO, Pt/rGO-AA, and Pt/rGO-Lemon systems was 32.0790, 23.1649, and 38.0790 mmol h-1 g-1, respectively. The results go hand in hand and are supported by the reasonably good spin concentration due to the presence of a large amount of the free-radical-like carbon, long-range direct/indirect exchange or interaction between graphene matrix, fragmented graphitic zones, C-defect nonbonding localized electronic states, and flat-band quasi-localized (QL) states induced by the point defects. © Copyright 2018 American Chemical Society.ascorbic acid; lemon; paramagnetism; photocatalytic hydrogen production; reduced graphene oxide; water splitting[SDGs]SDG6[SDGs]SDG7Ascorbic acid; Citrus fruits; Free radicals; Graphene; Paramagnetism; Point defects; Reducing agents; lemon; Localized electronic state; Photocatalytic hydrogen production; Photocatalytic water splitting; Reduced graphene oxides; Room temperature ferromagnetism; Superparamagnetic materials; Water splitting; Hydrogen productionjournal article10.1021/acsaem.8b005522-s2.0-85064815877