Jinxue Guo

An electrochemical oxygen evolution reaction (OER) is the crucial and limiting reaction in several renewable energy conversion systems, and metal–organic frameworks (MOFs) have triggered increasing research interests as potential catalysts toward OER. Deeper understanding of the OER activity over MOFs is extremely desired for the exploitation of robust MOFs-based electrocatalysts. Herein, Pt nanoparticles are loaded on Prussian blue analogues (Co3[Fe(CN)6]2 and Ni3[Fe(CN)6]2 nanocubes) to obtain improved catalytic activity. Co3[Fe(CN)6]2 and Ni3[Fe(CN)6]2 are rationally selected because of their containing of the fascinating transition metals of Co and Ni species. Using the hybrid catalyst as the modular system, we demonstrate the inspiring effect of Pt on the OER activity of MOFs. Detailed exploration conclusively demonstrates that Pt supplies combined advantages for the enhanced OER activity of MOFs, such as improving the intrinsic catalytic activity by tuning the valence state of transition metals (Co, Ni), increasing active sites, and enhancing charge transfer. Moreover, thorough electrochemical studies are also performed to declare the key role of Pt in the excellent catalytic activity and stability. We believe that introduction of trace amounts of Pt or other noble metals will be an effective solution to achieve a significant improvement in the OER activity of MOFs.

Oxygen evolution

Prussian blue

Noble metal

10.1021/acssuschemeng.7b02926

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Citations (39)

Vanadium doped nickel hydroxide nanosheets for efficient overall alkaline water splitting

Journal of Physics and Chemistry of Solids (2022)

Peiwen Zhao Linzheng Ma Jinxue Guo

Oxygen evolution

Alkaline water electrolysis

10.1016/j.jpcs.2022.110634

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Citations (13)

ChemInform Abstract: Fe_2.25W_0.75O₄/Reduced Graphene Oxide Nanocomposites for Novel Bifunctional Photocatalyst: One‐Pot Synthesis, Magnetically Recyclable and Enhanced Photocatalytic Property.

ChemInform (2013)

Jinxue Guo Bin Jiang Xiao Zhang Xiaoyu Zhou Wanguo Hou

Abstract The title nanocomposites are hydrothermally prepared from aqueous solutions containing Na 2 WO 4 , FeSO 4 , graphene oxide, NaOH, and sodium dodecyl benzene sulfonate (autoclave, pH 10, 180 °C, 12 h).

Autoclave

10.1002/chin.201342210

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Hollow spheres of Co-doped V2O3 enveloped in N-doped carbon as efficient anode for sodium-ion storage

Journal of Alloys and Compounds (2023)

Jingna Li Jinbo Wang Wenwen Chen Xiao Zhang Jinxue Guo

Carbon fibers

10.1016/j.jallcom.2023.172522

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Citations (5)

Monodisperse spindle-like FeWO4 nanoparticles: Controlled hydrothermal synthesis and enhanced optical properties