Low temperature decomposition of hydrous hydrazine over FeNi/Cu nanoparticles

Hydrogen production from water–gas shift reaction over Ni–Cu–CeO 2 oxide catalyst: The effect of preparation methods

“…The broad asymmetric Cu 2p 3/2 peak has been resolved into three main peaks and two satellite peaks after deconvolution. NieCueCeO 2 ÀSG showed two peaks appeared at 932.4 and 933.3 eV were attributed to the metallic phase of Cu and Cu þ , respectively [32,33]. However, in the case of NiÀCuÀCeO 2 ÀCP, these two peaks are slightly shifted to lower binding energy (BE).…”

Role of Metal–Support Interactions, Particle Size, and Metal–Metal Synergy in CuNi Nanocatalysts for H2 Generation

“…[35][36][37][38][39][40] Although noble metal-based catalysts have been shown to be effective in these reactions, the high cost hinders their widespread application, so that there is considerable current efforts devoted to explore efficient alternatives based on non-noble metals. 37,[41][42][43] For example, bimetallic Ni-Fe, Cu-Co, Ni-Co nanoparticles were reported to be active catalysts for these reactions. 37,41,42,44,45 Nevertheless, the use of colloidal nanoparticles will raise problems of handling, stability and separation.…”

“…[32][33][34] Among the potential candidates for effective chemical hydrogen storage, ammonia borane (AB; NH 3 BH 3 ) and hydrous hydrazine (N 2 H 4 .H 2 O) with high hydrogen contents have been shown to be promising hydrogen carriers for storage and transportation. [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] Binary metallic nanocatalysts based on the combination of noble and non-noble metals have been widely investigated for hydrogen release from both AB and hydrazine. [35][36][37][38][39][40] Although noble metal-based catalysts have been shown to be effective in these reactions, the high cost hinders their widespread application, so that there is considerable current efforts devoted to explore efficient alternatives based on non-noble metals.…”

Selectivity of Ni-based surface alloys toward hydrazine adsorption: A DFT study with van der Waals interactions

“…Xu and coworkers synthesized the bimetallic nanoparticles of Ni-Rh [5,6], Ni-Pd [7] and Ni-Ir [8] for chemical hydrogen storage; especially, they found that noble-metal-free Ni-Fe nanoparticles exhibited excellent catalytic performance for the complete decomposition of hydrous hydrazine [9]. Manukyan and coworkers designed a supported catalyst by reduction of Ni and Fe salts on copper nanoparticles, which exhibited high catalytic conversion and enhanced selectivity of hydrogen evolution [10]. Zhang' group prepared graphene supported Rh-Ni catalysts, with the promotion effect of NaOH, which exhibited 100% selectivity to H 2 and a much higher catalytic efficiency compared with bare Rh-Ni nanoparticles [11].…”