Co/Fe₃O₄ nanoparticles embedded in N-doped hierarchical porous carbon derived from zeolitic imidazolate frameworks as efficient oxygen reduction electrocatalysts for zinc–air battery-based desalination

Abstract

Zinc-air battery-based desalination (ZABD) is a potential solution to effectively desalinate brackish water and supply energy simultaneously, which requires catalysts with high and durable electrocatalytic activity for oxygen reduction reaction...

Ambient Ammonia Synthesis via Nitrate Electroreduction in Neutral Media on Fe3O4 Nanoparticles-decorated TiO2 Nanoribbon Array

“…Figure a illustrates the X-ray diffraction (XRD) pattern of Fe 3 O 4 @TiO 2 /TP. The diffraction peaks at 30.2°, 35.5°, 57.1°, and 62.7° are indexed to the (220), (311), (511), and (440) crystal faces of Fe 3 O 4 (PDF 88-0315), respectively . The remaining diffraction peaks are attributed to TiO 2 (PDF 89-4921) and Ti (PDF 89-5009).…”

“…The diffraction peaks at 30.2°, 35.5°, 57.1°, and 62.7°are indexed to the (220), (311), (511), and (440) crystal faces of Fe 3 O 4 (PDF 88-0315), respectively. 36 The remaining diffraction peaks are attributed to TiO 2 (PDF 89-4921) and Ti (PDF 89-5009). Remarkably, except for the characteristic peaks of these phases, there are no other obvious ) illustrate the purity of TiO 2 /TP and no particle coverage on TiO 2 surface.…”

“…The SEM image and relevant energy-dispersive X-ray (EDX) elemental mapping images demonstrate that Fe 3 O 4 @TiO 2 /TP is composed of Fe, Ti, and O, which are evenly distributed on the surface of TP (Figure 1c). In addition, a high-resolution TEM (HRTEM) image displays lattice fringes with interplanar distances of 0.253 nm and 0.351 and 0.325 nm, ascribed to the (311) face of Fe 3 O 4 36 and the (101) face of TiO 2 , 18 respectively (Figure 1e). These observations confirm the successful preparation of Fe 3 O 4 nanoparticles decorated TiO 2 nanoribbon array on TP.…”

Insights into desalination battery concepts: current challenges and future perspectives

“…3(c)); (iii) Redox-flow DB systems (RF-DB) [51][52][53]67,68,[102][103][104][105][106] (Fig. 3(d and e); and (iv) Metal Air DBs [54][55][56]107,108 (Fig. 3(f and g)).…”

Charge Carriers for Aqueous Dual‐Ion Batteries

“…By applying N‐doped hierarchically porous carbon material encapsulating Co/Fe 3 O 4 nanoparticles as catalyst for oxygen reduction, the desalination battery receives fast NaCl removal rate of 32.9 μg cm −2 min −1 together with high energy output of 91.6 kJ mol −1 (Figure 4c). [70b] …”