High-efficient removal of Oxygen(O2) impurity from H2 flow on nickel-manganese Oxide: Regulating the exposed crystal plane, structure-activity relationship and determination of active sites

Xue, Yixin; Gu, Jia-nan; Yu, Chengwei; Liang, Jianxing; Guo, Mingming; Li, Kan; Jia, Jinping; Sun, Tonghua

doi:10.1016/j.apsusc.2023.159054

Applied Surface Science

2024

DOI: 10.1016/j.apsusc.2023.159054

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High-efficient removal of Oxygen(O2) impurity from H2 flow on nickel-manganese Oxide: Regulating the exposed crystal plane, structure-activity relationship and determination of active sites

Yixin Xue,

Jia-nan Gu,

Chengwei Yu

et al.

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Optimizing Cu 3d Bands with Nanotubular SnO₂ to Boost Their Catalytic Transfer Hydrogenation Activity

Pan,

Cai,

et al. 2024

Langmuir

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Catalytic transfer hydrogenation (CTH) using Cu nanocatalysts offers significant advantages over direct high-pressure hydrogenation. However, the active hydrogen (H*) in this process exhibits poor adsorption and tends to release H 2 readily due to the fully occupied 3d states of Cu. To address this issue, a tubular SnO 2 support with electron-accepting ability was selected to host Cu nanoparticles, aiming to optimize the Cu 3d bands. The Cu/SnO 2 nanohybrids were prepared through an electrospinning technique, followed by hydrothermal synthesis. As evidenced by X-ray photoelectron spectroscopy (XPS) binding energy shifts and density functional theory (DFT) simulations, some electrons from Cu transferred to SnO 2 in the Cu/SnO 2 nanohybrids due to their different work functions. Such electron transfer enables the Cu 3d orbitals to lose electrons and alters its valence configuration from 3d 10 to 3d 10−x , which enhances the adsorption of active H* atoms and thereby inhibits undesirable H 2 release. The 15 wt % Cu/SnO 2 exhibits improved catalytic hydrogenation of 4nitrophenol with NaBH 4 , with an optimal normalized rate constant of 56.98 mg −1 min −1 and a turnover frequency of 4.82 min −1 , surpassing most reported catalysts. The enhanced activity is attributed to the optimized electronic states, improved hydrogen adsorption, and the tubular structure of the support. This work might shed light on developing more non-noble metal nanocatalysts for CTH by tuning their d bands with appropriate oxide supports.

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Optimizing Cu 3d Bands with Nanotubular SnO₂ to Boost Their Catalytic Transfer Hydrogenation Activity

Pan,

Cai,

et al. 2024

Langmuir

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High-efficient removal of Oxygen(O2) impurity from H2 flow on nickel-manganese Oxide: Regulating the exposed crystal plane, structure-activity relationship and determination of active sites

Cited by 1 publication

References 29 publications

Optimizing Cu 3d Bands with Nanotubular SnO₂ to Boost Their Catalytic Transfer Hydrogenation Activity

Optimizing Cu 3d Bands with Nanotubular SnO₂ to Boost Their Catalytic Transfer Hydrogenation Activity

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High-efficient removal of Oxygen(O2) impurity from H2 flow on nickel-manganese Oxide: Regulating the exposed crystal plane, structure-activity relationship and determination of active sites

Cited by 1 publication

References 29 publications

Optimizing Cu 3d Bands with Nanotubular SnO2 to Boost Their Catalytic Transfer Hydrogenation Activity

Optimizing Cu 3d Bands with Nanotubular SnO2 to Boost Their Catalytic Transfer Hydrogenation Activity

Contact Info

Product

Resources

About

Optimizing Cu 3d Bands with Nanotubular SnO₂ to Boost Their Catalytic Transfer Hydrogenation Activity

Optimizing Cu 3d Bands with Nanotubular SnO₂ to Boost Their Catalytic Transfer Hydrogenation Activity