J. Mater. Sci. Technol. ›› 2023, Vol. 156: 217-229.DOI: 10.1016/j.jmst.2023.03.007

• Research Article • Previous Articles     Next Articles

Construction of oxygen-vacancies-rich S-scheme BaTiO3/red phosphorous heterojunction for enhanced photocatalytic activity

Yuhua Maa,b,1,*, Xiadiye Aihemaitia,1, Kezhen Qic,**, Shiyin Wanga, Yanjie Shia, Zhuanhu Wanga, Minghe Gaoa, Fuhe Gaia, Yulian Qiua   

  1. aCollege of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi 830054, China;
    bXinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, Xinjiang Normal University, Urumqi 830054, China;
    cCollege of Pharmacy, Dali University, Dali 671000, China
  • Received:2023-02-14 Revised:2023-02-28 Accepted:2023-03-05 Published:2023-09-01 Online:2023-03-21
  • Contact: * College of Chemistry and Chemical Engineering, Xin-jiang Normal University, Urumqi 830054, China. **E-mail addresses: 15199141253@163.com (Y. Ma), qkzh2003@aliyun.com (K. Qi).
  • About author:1 These authors contributed equally to this work.

Abstract: The S-scheme heterojunctions can effectively separate photogenerated electrons and holes, retain their high redox capacity, and provide great prospects for enhancing the photocatalytic activity of the composites in different fields. Herein, S-scheme heterojunction photocatalytic materials were rationally designed and prepared by a simple hydrothermal method between narrow-bandgap red phosphorus (HRP) and wide-bandgap BaTiO3 (BTO) photocatalysts. Owing to the effective charge separation and redox ability from the S-scheme mechanism and oxygen vacancies, BTO/HRP exhibited good photoelectrochemical and photocatalytic degradation ability. Systematic photoreaction tests demonstrated that BTO/HRP had high practicality in the removal of pollutants from wastewater; its photodegradation rate of Rhodamine B reached 3.029 × 10-1 min-1 in 12 min; and it could inactivate 1.8 × 109 CFU/mL of Escherichia. coli in 1 h, with an antibacterial rate of 99.8%. This paper provided a promising photocatalyst for pollutant removal and a new strategy for the fabrication of efficient RP-based photocatalytic materials.

Key words: S-scheme heterojunction, Red phosphorous, BaTiO3, Photocatalytic activity