Growth and Structure of Single-Crystal ZnO Nanorods Codoped with Fe and Li for Multiferroic Applications

Shestakov, Mikhail V.; Тафеенко, В. А.; Zubavichus, Yan V.; Presniakov, Igor A.; Abakumov, Artem M.; Panin, G. N.; Баранов, А. Н.

doi:10.1021/acs.cgd.2c00811

Cited by 1 publication

(2 citation statements)

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“…43 Besides, it has been discussed that Fe doping into the ZnO structure can be in two types: Zn substitution and surface and interstitial doping. 44 Therefore, it has been explored that transition metals such as Fe and Mn doping into the crystal lattice of ZnO have a substantial impact on the properties of the ZnO nanostructure and create new opportunities for its use in various applications. One of the most notable effects of Fe and Mn doping is the creation of new electronic states within the band gap of ZnO.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, introducing Mn doping can modulate ZnO’s grain size and band gap . Besides, it has been discussed that Fe doping into the ZnO structure can be in two types: Zn substitution and surface and interstitial doping . Therefore, it has been explored that transition metals such as Fe and Mn doping into the crystal lattice of ZnO have a substantial impact on the properties of the ZnO nanostructure and create new opportunities for its use in various applications.…”

Section: Introductionmentioning

confidence: 99%

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Band Energy Modulation in an Fe–Mn–ZnO Nanowire–Nanosheet Catalyst for Efficient Overall Water Splitting

Mishra,

Choi,

Ryu

et al. 2024

Energy Fuels

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Here, we studied a simple, scalable, and in situ hydrothermal method to prepare an Fe−Mn-doped ZnO nanowire−nanosheet on a three-dimensional (3D) Ni-foam substrate for electrocatalytic overall water splitting. Attractively, the doping of Fe and Mn in ZnO plays a significant role in mobilizing the electron from Fe and Mn toward ZnO in the Fe−Mn-doped ZnO nanowire−nanosheet due to different vacuum levels of Fe, Mn, and ZnO, facilitating the development of more active sites on the surface of the catalyst, which plays a crucial role in improving the catalytic performances during overall water splitting. Consequently, the Fe−Mn-doped ZnO nanowire−nanosheet shows a lowermost overpotential of 230 mV and a lowermost Tafel slope of 115.2 mV dec −1 during the hydrogen evolution reaction (HER) and 248 mV overpotential and a short Tafel slope of 109.1 mV dec −1 during the oxygen evolution reaction (OER) in a 1.0 M KOH electrolyte. Besides, the Fe−Mn-doped ZnO nanowire−nanosheet depicts low charge transfer and series resistances of 3.7 and 0.41 Ω during the HER and 0.36 and 1.66 Ω during the OER, respectively. Also, it elucidates outstanding durability at −10 mA cm −2 for 12 h (HER) and 10 mA cm −2 for 12 h (OER) using chronopotentiometry and 1000 cycles. In addition, the Fe−Mn−ZnO||Fe− Mn−ZnO nanowire−nanosheet cell shows a lower potential of 1.74 V and outstanding stability over 24 h to deliver 10 mA cm −2 in electrocatalytic overall water splitting. Besides, the staircase stability of the Fe−Mn−ZnO||Fe−Mn−ZnO nanowire−nanosheet cell also suggests outstanding stability over 8.2 h at different current densities. Captivatingly, the concept of energy band modulation in the bimetallic doped Fe−Mn−ZnO nanowire−nanosheet catalyst is envisaged to explore insights into the mechanisms of the evolution of hydrogen and oxygen.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%