Pt nanoparticles decorated heterostructured g-C3N4/Bi2MoO6 microplates with highly enhanced photocatalytic activities under visible light

Authors/Creators

Z. Jia
F. Lyu
Laichang Zhang, Edith Cowan UniversityFollow
S. Zeng
Shunxing Liang, Edith Cowan UniversityFollow
Y. Y. Li
J. Lu

Abstract

Exploring an efficient and photostable heterostructured photocatalyst is a pivotal scientific topic for worldwide energy and environmental concerns. Herein, we reported that Pt decorated g-C₃N₄/Bi₂MoO₆ heterostructured composites with enhanced photocatalytic performance under visible light were simply synthesized by one-step hydrothermal method for methylene blue (MB) dye degradation. Results revealed that the synthetic Pt decorated g-C₃N₄/Bi₂MoO₆ composites with Bi₂MoO₆ contents of 20 wt.% (Pt@CN/20%BMO) presented the highest photocatalytic activity, exhibiting 7 and 18 times higher reactivity than the pure g-C₃N₄ and Bi₂MoO₆, respectively. Structural analyses showed that Bi₂MoO₆ microplates were anchored on the wrinkled flower-like g-C₃N₄ matrix with Pt decoration, leading to a large expansion of specific surface area from 10.79 m²/g for pure Bi₂MoO₆ to 46.09 m²/g for Pt@CN/20%BMO. In addition, the Pt@CN/20%BMO composites exhibited an improved absorption ability in the visible light region, presenting a promoted photocatalytic MB degradation. Quenching experiments were also conducted to provide solid evidences for the production of hydroxyl radicals (^•OH), electrons (e⁻), holes (h⁺) and superoxide radicals (^•O²⁻) during dye degradation. The findings in this critical work provide insights into the synthesis of heterostructured photocatalysts with the optimization of band gaps, light response and photocatalytic performance in wastewater remediation.

Document Type

Journal Article

Date of Publication

5-21-2019

ISSN

2045-2322

Volume

9

Issue

1

PubMed ID

31114005

Publication Title

Scientific Reports

Publisher

Springer Nature

School

School of Engineering

RAS ID

28883

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 License.

Related Publications

Liang, S. (2019). Catalytic mechanism, multifunctionality and structural design of iron-based metallic glasses. https://ro.ecu.edu.au/theses/2274

Comments

Jia, Z., Lyu, F., Zhang, L., Zeng, S., Liang, S., Li, Y. Y., & Lu, J. (2019). Pt nanoparticles decorated heterostructured gC3N4/Bi2MoO6 microplates with highly enhanced photocatalytic activities under visible light. Scientific Reports, 9(1), Article 7636. Available here

First Page

7636

Last Page

7636