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Induced electron transfer by oxygen vacancy gradient on SnO2 conductive glass for electrocatalytic reduction

氧空位浓度梯度诱导电子转移的电催化还原

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摘要

通过表面氧空位缺陷调控催化剂的表面电子结构, 实现催化剂表面易于富集参与反应的电子, 从而提高还原催化效率. 本文中, 将导电玻璃隔绝空气加热, 在其表面形成氧空位缺陷. 通过控制热处理时间调控表面氧空位浓度梯度. 氧空位能导致SnO2导带弯曲, 因此调控氧空位梯度可增强SnO2导电玻璃表面电子富集速率, 从而实现高效电催化还原反应. 在相同条件下, 使其催化性能可以和金属铂相媲美.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (61774033). We also thank the Big Data Center of Southeast University for providing the facility support on the numerical calculations.

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  1. These authors contributed equally to this work.

Authors and Affiliations

  1. Institute of Advanced Materials, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China

    Xiaoyun Zhang  (张晓云), Dong Li  (李东), Lian Wang  (王练), Fan Yang  (杨帆) & Yuqiao Wang  (王育乔)

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  1. Xiaoyun Zhang  (张晓云)
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  2. Dong Li  (李东)
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  3. Lian Wang  (王练)
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  4. Fan Yang  (杨帆)
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  5. Yuqiao Wang  (王育乔)
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Author contributions All authors listed have made a direct and intellectual contribution to the work, and approved it for publication.

Corresponding author

Correspondence to Yuqiao Wang  (王育乔).

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Conflict of interest The authors declare no conflict of interest.

Additional information

Xiaoyun Zhang is currently a PhD candidate in the Nano Photo-electrochemistry & Device Group, at the Southeast University, under the supervision of Prof. Yuqiao Wang. She received her BSc (2017) and MSc (2020) degrees from China University of Mining and Technology. Her research interests focus on the development of high-efficiency catalysis and the electrocatalytic mechanism of electrocatalytic reduction reaction.

Dong Li is currently a Master candidate in the Nano Photo-electrochemistry & Device Group at the Southeast University, under the supervision of Prof. Yuqiao Wang. He received his BSc degree in chemical engineering in 2019 from Anqing Normal University. His current research focuses on the development of high-efficiency catalysis for water-splitting.

Yuqiao Wang received his BSc degree in fine chemicals (2001) from Anhui University, and MSc (2005) and PhD (2008) degrees in material physics & chemistry from the Southeast University. Now, he is a Full Professor at the Southeast University, who is also the Head of Nano Photo-electrochemistry & Device Group. His current research interests include the design and synthesis of nanostructured photoelectrochemical functional materials, the related device integration, and the relationship between material invalidation and device performance attenuation.

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Zhang, X., Li, D., Wang, L. et al. Induced electron transfer by oxygen vacancy gradient on SnO2 conductive glass for electrocatalytic reduction. Sci. China Mater. 64, 2081–2085 (2021). https://doi.org/10.1007/s40843-021-1674-3

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  • DOI: https://doi.org/10.1007/s40843-021-1674-3

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