Monodisperse Co3O4 quantum dots on porous carbon nitride nanosheets for enhanced visible-light-driven water oxidation

Huayang Zhang; Wenjie Tian; Li Zhou; Hongqi Sun; Moses Tade; Shaobin Wang

doi:10.1016/j.apcatb.2017.03.028

Monodisperse Co₃O₄ quantum dots on porous carbon nitride nanosheets for enhanced visible-light-driven water oxidation

Huayang Zhang, Wenjie Tian, Li Zhou, Hongqi Sun, Moses Tade, Shaobin Wang

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

127 Citations (Scopus)

Abstract

Here we report a facile annealing process for homogeneous deposition of Co₃O₄ quantum dots (Co₃O₄ QDs) onto porous g-C₃N₄ nanosheets. It was discovered that pores were catalytically produced around Co₃O₄ QDs. In the synthesis, annealing temperature was found to be crucial for the textural property, optical absorption, and the corresponding photocatalytic water oxidation as well as photochemical performances. The highest specific surface area, pore volume and optimal O₂ production rate as well as the highest photocurrent were obtained on 0.8 wt.% Co₃O₄ QDs decorated g-C₃N₄ nanosheets annealed at 300 °C (0.8% Co₃O₄-C₃N₄-300). These results underline the importance of surface heterojunction and afford us a feasible protocol for rational design of g-C₃N₄ based photocatalysts for water oxidation.

Original language	English
Pages (from-to)	2-9
Number of pages	8
Journal	Applied Catalysis B: Environmental
Volume	223
DOIs	https://doi.org/10.1016/j.apcatb.2017.03.028
Publication status	Published - Apr 2018
Externally published	Yes

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title = "Monodisperse Co3O4 quantum dots on porous carbon nitride nanosheets for enhanced visible-light-driven water oxidation",

abstract = "Here we report a facile annealing process for homogeneous deposition of Co3O4 quantum dots (Co3O4 QDs) onto porous g-C3N4 nanosheets. It was discovered that pores were catalytically produced around Co3O4 QDs. In the synthesis, annealing temperature was found to be crucial for the textural property, optical absorption, and the corresponding photocatalytic water oxidation as well as photochemical performances. The highest specific surface area, pore volume and optimal O2 production rate as well as the highest photocurrent were obtained on 0.8 wt.% Co3O4 QDs decorated g-C3N4 nanosheets annealed at 300 °C (0.8% Co3O4-C3N4-300). These results underline the importance of surface heterojunction and afford us a feasible protocol for rational design of g-C3N4 based photocatalysts for water oxidation.",

keywords = "CoO quantum dots, Nanosheets, Photocatalysis, Porous g-CN, Water oxidation",

author = "Huayang Zhang and Wenjie Tian and Li Zhou and Hongqi Sun and Moses Tade and Shaobin Wang",

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doi = "10.1016/j.apcatb.2017.03.028",

language = "English",

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T1 - Monodisperse Co3O4 quantum dots on porous carbon nitride nanosheets for enhanced visible-light-driven water oxidation

AU - Zhang, Huayang

AU - Tian, Wenjie

AU - Zhou, Li

AU - Sun, Hongqi

AU - Tade, Moses

AU - Wang, Shaobin

PY - 2018/4

Y1 - 2018/4

N2 - Here we report a facile annealing process for homogeneous deposition of Co3O4 quantum dots (Co3O4 QDs) onto porous g-C3N4 nanosheets. It was discovered that pores were catalytically produced around Co3O4 QDs. In the synthesis, annealing temperature was found to be crucial for the textural property, optical absorption, and the corresponding photocatalytic water oxidation as well as photochemical performances. The highest specific surface area, pore volume and optimal O2 production rate as well as the highest photocurrent were obtained on 0.8 wt.% Co3O4 QDs decorated g-C3N4 nanosheets annealed at 300 °C (0.8% Co3O4-C3N4-300). These results underline the importance of surface heterojunction and afford us a feasible protocol for rational design of g-C3N4 based photocatalysts for water oxidation.

AB - Here we report a facile annealing process for homogeneous deposition of Co3O4 quantum dots (Co3O4 QDs) onto porous g-C3N4 nanosheets. It was discovered that pores were catalytically produced around Co3O4 QDs. In the synthesis, annealing temperature was found to be crucial for the textural property, optical absorption, and the corresponding photocatalytic water oxidation as well as photochemical performances. The highest specific surface area, pore volume and optimal O2 production rate as well as the highest photocurrent were obtained on 0.8 wt.% Co3O4 QDs decorated g-C3N4 nanosheets annealed at 300 °C (0.8% Co3O4-C3N4-300). These results underline the importance of surface heterojunction and afford us a feasible protocol for rational design of g-C3N4 based photocatalysts for water oxidation.

KW - CoO quantum dots

KW - Nanosheets

KW - Photocatalysis

KW - Porous g-CN

KW - Water oxidation

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DO - 10.1016/j.apcatb.2017.03.028

M3 - Article

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SN - 0926-3373

VL - 223

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EP - 9

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -

Monodisperse Co₃O₄ quantum dots on porous carbon nitride nanosheets for enhanced visible-light-driven water oxidation

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