Controlled synthesis and fine-tuned interface of NiS nanoparticles/Bi2WO6 nanosheets heterogeneous as electrocatalyst for oxygen evolution reaction

Cu2S Nanoflakes Decorated with NiS Nanoneedles for Enhanced Oxygen Evolution Activity

“…(3) the Cu2S with high conductivity can promote the charge transfer ability; and (4) the synergistic effect between NiS and Cu2S will increase the catalytic property. In addition, the overpotential of the 15% NiS-Cu2S-CF composite was much lower than those previously reported (Table 1) [10,12,13,15,[22][23][24][36][37][38][39], suggesting that the as-fabricated NiS-Cu2S-CF composite is a promising OER electrocatalyst. Figure 4c shows the Tafel slopes of the as-prepared electrocatalysts.…”

“…Furthermore, the construction of binary metal sulfides heterostructure is a promising route for significantly improving the OER activity of catalysts because the heterostructure can enhance charge transfer and provides more surface-active sites [19][20][21]. For instance, Li et al fabricated the NiS/Bi 2 WO 6 heterostructure for OER, which exhibited a small overpotential of 527 mV@10 mA cm −2 [22]. Luo et al synthesized the NiS/C 3 N 4 composites for oxygen evolution, which displayed a small overpotential of 334 mV@10 mA cm −2 [23].…”

Interface engineering of CeO2nanoparticle/Bi2WO6nanosheet nanohybrids with oxygen vacancies for oxygen evolution reactions under alkaline conditions

“…This might be the surface of the Bi 2 WO 6 nanosheets of the CeO 2 nanoparticles due to low loading and even growth. 29–31…”

Highly Dispersion Cu2O QDs Decorated Bi2WO6 S-Scheme Heterojunction for Enhanced Photocatalytic Water Oxidation

“…As shown in Figure 8 a, Cu 2 O exhibits significantly smaller R ct under light irradiation (l) in comparison with being in darkness (d), indicating that the electrical resistance at the electrode/electrolyte interface is decreased due to the production of photoinduced charge carriers. In the case of the flower-like Bi 2 WO 6 MFs, a larger semicircle is recorded, suggesting that the Bi 2 WO 6 possesses poor electrochemical performance in charge-transfer process [ 53 , 54 ]. With the formation of the Cu 2 O QDs/Bi 2 WO 6 heterojunction, the R ct of Bi 2 WO 6 is intensively reduced, which apparently improves the photoelectrochemical property of Bi 2 WO 6 and is favorable for the transportation of the photogenerated charge carriers.…”