Electronic doping-enabled transition from n- To p-type conductivity over Au@CdS core-shell nanocrystals toward unassisted photoelectrochemical water splitting

Rongrong Pan; Jia Liu; Yuemei Li; Xinyuan Li; Erhuan Zhang; Qiumei Di; Mengyao Su; Jiatao Zhang

doi:10.1039/c9ta08766d

Electronic doping-enabled transition from n- To p-type conductivity over Au@CdS core-shell nanocrystals toward unassisted photoelectrochemical water splitting

Rongrong Pan, Jia Liu^*, Yuemei Li, Xinyuan Li, Erhuan Zhang, Qiumei Di, Mengyao Su, Jiatao Zhang

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

Here we show a novel strategy for tailoring the synergistic electrical properties of metal@semiconductor hybrid nanocrystals (HNCs) based on cation exchange-enabled electronic doping. As a demonstration, the conductive nature of Au@CdS core-shell HNCs was changed from n- to p-type by introducing Cu dopants into the CdS shell. The dependence of the conductivity type on the dopant concentration in the HNCs is disclosed by combined photoelectrochemical (PEC) studies. Moreover, a tandem PEC cell consisting of an undoped Au@CdS photoanode and a Cu-doped Au@CdS photocathode respectively modified with cocatalysts is fabricated, which displayed stable H₂ and O₂ evolution in unassisted PEC overall water splitting.

Original language	English
Pages (from-to)	23038-23045
Number of pages	8
Journal	Journal of Materials Chemistry A
Volume	7
Issue number	40
DOIs	https://doi.org/10.1039/c9ta08766d
Publication status	Published - 2019

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Pan, R., Liu, J., Li, Y., Li, X., Zhang, E., Di, Q., Su, M., & Zhang, J. (2019). Electronic doping-enabled transition from n- To p-type conductivity over Au@CdS core-shell nanocrystals toward unassisted photoelectrochemical water splitting. Journal of Materials Chemistry A, 7(40), 23038-23045. https://doi.org/10.1039/c9ta08766d

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abstract = "Here we show a novel strategy for tailoring the synergistic electrical properties of metal@semiconductor hybrid nanocrystals (HNCs) based on cation exchange-enabled electronic doping. As a demonstration, the conductive nature of Au@CdS core-shell HNCs was changed from n- to p-type by introducing Cu dopants into the CdS shell. The dependence of the conductivity type on the dopant concentration in the HNCs is disclosed by combined photoelectrochemical (PEC) studies. Moreover, a tandem PEC cell consisting of an undoped Au@CdS photoanode and a Cu-doped Au@CdS photocathode respectively modified with cocatalysts is fabricated, which displayed stable H2 and O2 evolution in unassisted PEC overall water splitting.",

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AU - Pan, Rongrong

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AU - Li, Xinyuan

AU - Zhang, Erhuan

AU - Di, Qiumei

AU - Su, Mengyao

AU - Zhang, Jiatao

PY - 2019

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AB - Here we show a novel strategy for tailoring the synergistic electrical properties of metal@semiconductor hybrid nanocrystals (HNCs) based on cation exchange-enabled electronic doping. As a demonstration, the conductive nature of Au@CdS core-shell HNCs was changed from n- to p-type by introducing Cu dopants into the CdS shell. The dependence of the conductivity type on the dopant concentration in the HNCs is disclosed by combined photoelectrochemical (PEC) studies. Moreover, a tandem PEC cell consisting of an undoped Au@CdS photoanode and a Cu-doped Au@CdS photocathode respectively modified with cocatalysts is fabricated, which displayed stable H2 and O2 evolution in unassisted PEC overall water splitting.

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Electronic doping-enabled transition from n- To p-type conductivity over Au@CdS core-shell nanocrystals toward unassisted photoelectrochemical water splitting

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