Photocatalytic Activity of MoS2 Nanoflower-Modified CaTiO3 Composites for Degradation of RhB under Visible Light

Minghan Luo; Jiaxing Xu; Wenjie Xu; Yu Zheng; Gongde Wu; Taeseop Jeong

doi:10.3390/nano13040636

Photocatalytic Activity of MoS₂ Nanoflower-Modified CaTiO₃ Composites for Degradation of RhB under Visible Light

Nanomaterials (Basel). 2023 Feb 6;13(4):636. doi: 10.3390/nano13040636.

Authors

Minghan Luo^{1

2}, Jiaxing Xu¹, Wenjie Xu¹, Yu Zheng¹, Gongde Wu^{1

2}, Taeseop Jeong³

Affiliations

¹ School of Environmental Engineering, Nanjing Institute of Technology, Nanjing 211167, China.
² Energy Research Institute, Nanjing Institute of Technology, Nanjing 211167, China.
³ Department of Environmental Engineering, Chonbuk National University, Chonbuk 561-756, Republic of Korea.

Abstract

Nanoflower-like MoS₂ deposited on the surface of rectangular CaTiO₃(CTO) was designed and synthesized via a simple template-free strategy. Through SEM, TEM, and other characterization methods, the MoS₂ nanoflowers were confirmed to be well deposited on the surface of CTO. LED was used as the visible light source, and rhodamine B (RhB) in an aqueous solution was used as the model pollutant to assess the photodegradation activity of the samples. The results showed that the MoS₂/CaTiO₃(MCTO) composite significantly improved the photocatalytic degradation of rhodamine B (RhB) in water, compared with a single CTO, and with the MCTO-2 composite photocatalysts, 97% degradation of RhB was achieved in 180 min, and its photocatalytic activity was about 5.17 times higher than that of the bare CTO. The main reasons for enhancing photocatalytic performance are the strong interaction between the nanoflower-like MoS₂ and rectangular CTO, which can lead to the effective separation of electron transfer and photoexcited electron-hole pairs in MCTO composites. This work provides a new notion for researching an effective method of recycling catalytic materials.

Keywords: CaTiO3; MoS2; RhB; perovskite.

Grants and funding

This research was funded by the Cooperation Fund of Energy Research Institute, Nanjing Institute of Technology (No. CXY201925), and The Natural Sciences Foundation of Nanjing Institute of Technology (NO. YKJ201847).