Nickel nanoparticles coated with graphene layers as efficient co-catalyst for photocatalytic hydrogen evolution

Metallic Ni3P/Ni Co‐Catalyst To Enhance Photocatalytic Hydrogen Evolution

“…Meanwhile, maintaining the metallicity of these cocatalysts has been identified to facilitate H 2 evolution from water. [13] In addition, metal nanoparticles, such as Bi and Ni, have also been demonstrated to further boost photocatalytic activity by improving electron transfer. [14] Therefore, we anticipate that the combinationo fp hosphides and metal materials could substitute for an oble metal as promising alternative cocatalysts to construct ah igh level H 2 evolution system.…”

“…[5] Recently,n on-noble-metal compounds, such as phosphides, [4b, 6] sulfides [7] and carbides, [8] have been extensively studied in electrocatalysis on account of their trapping electron ability and active reaction sites. [13] In addition, metal nanoparticles, such as Bi and Ni, have also been demonstrated to further boost photocatalytic activity by improving electron transfer. [9] It is reportedt hat the phosphorus (P) can act as a proton acceptoro nt he catalysts urface, [10] and subsequently facilitateH 2 release from proton reduction active sites.…”

Modified Graphitic Carbon Nitride Nanosheets for Efficient Photocatalytic Hydrogen Evolution

“…The XRD pattern of pristineg -C 3 N 4 exhibits two main diffraction peaks at 2 q = 27.5 and1 3.28 indexed to the (0 02)a nd (1 00)l attice planes, respectively. [24] Three sharpd iffraction peaks at 2 q = 44.2, 51.5, and 75.88 are observedi nt he XRD pattern of Co@NC, which correspond to the (110), (2 00), and (2 20)l attice planes of Co (JCPDS PDF no. 15-0806), respectively.T here is ab read peak at 2 q = 25.58 in the XRD pattern of Co@NC, which is indexed to the (0 02)l attice plane of graphitized carbon layers.…”

Catalytic H2 Evolution with CoO, Co(OH)2 and CoO(OH) Nanoparticles Generated from a Molecular Polynuclear Co Complex

“…399 eV for all samples is typical of Co–N bonds or N ‐pyridyls,[4a], [4b], which originate from the ligand L in precursor 1 during its electro‐decomposition (a comparison of the N atomic percentage measured by XPS indicates that the amount of N in the samples is between 8 and 15 %, and thus, is not negligible, compared with the 0.7 % atomic proportion of the blank), and the C 1s band at ca. 284.2 eV is due to the GC electrode . From now on in this work, and for the sake of brevity, the three sets of NPs formed after 1 h electrolysis at –1.86 V versus NHE will be named CoO–MeCN, CoO(OH)–MeOH and CoO(OH)–DCM.…”