Synthesis of platinum/graphene composites by a polyol method: The role of graphite oxide precursor surface chemistry

Real-time monitored photocatalytic activity and electrochemical performance of an rGO/Pt nanocomposite synthesizedviaa green approach

“…The characteristic peaks at 40 (111), 46.54 (200), 67.0 (220), and 81.46 (311) are related to Pt with the facecentered cubic structure, respectively, conrming the formation of rGO/Pt nanocomposite. 36 The formation of the rGO/Pt nanocomposites was further justied by Raman analysis (Fig. 2b).…”

“…41 Another pair of less intense peaks with binding energies at 74.48 and 77.98 eV assigned to Pt 4f 7/2 and Pt 4f 5/2 , respectively, can be ascribed to Pt 2+ . 36,41 The presence of Pt 2+ obtained during the nucleation and growth process of Pt on the surface of rGO containing oxygen groups leads to Pt-O-C bond formation. 36,42…”

Fabrication of reduced graphene oxide/metal (Cu, Ni, Co) nanoparticle hybrid composites via a facile thermal reduction method

“…In the FT-IR spectra of GO (Figure 7a), the characteristic absorption peaks at around 1050, 1400, 1620 30 and 1720 cm -1 can be ascribed to the stretching vibration of C-O, O-H deformation, the adsorbed H 2 O deformation, and C=O in carboxylic acid moieties, respectively. 47 However, in the FT-IR spectra of rGO/Cu-2-1 (Figure 7b), rGO/Ni-3-1 ( Figure 7c) and rGO/Co-3-1 (Figure 7d) obtained by the thermal reduction 35 method, almost no characteristic absorption peaks for C-O, C=O and O-H groups were observed, demonstrating that GO was thermally reduced.…”

Obtenção e caracterização de compósitos poliméricos com óxido de grafeno reduzido.

“…Número de onda (cm -1 ) Atribuição 1738, 1740 e 1767 Estiramento C=O em -COOH [58] 1614, 1620, 1624 e 1643 Estiramento C=C dos anéis fenílicos [33] 1435 e 1443 Estiramento OH em -COOH [49] 1290, 1298, 1339 e 1360 Deformação de O-H [73] 1165 Estiramento C-O-C em grupos epóxidos [39] 1043 e 1103 Estiramento C-O [36] Analisando Número de onda (cm -1 ) Atribuição…”

“…Estiramento O-H em -COOH [49] 1281, 1288, 1290, 1294, 1296 e 1319 Deformação de O-H [73] 1167 e 1170 Estiramento C-O-C em grupos epóxidos [39] 1060 e 1113 Estiramento C-O [36] 1419 Numero de Onda (cm -1 ) Estiramento O-H [74] 1738, 1749 e 1759 Estiramento C=O em -COOH [58] 1583, 1595, 1597, 1599, 1618 e 1628 Estiramento C=C dos anéis fenílicos [33] 1417…”