Construction of oxygen-vacancies-rich S-scheme BaTiO_(3)/red phosphorous heterojunction for enhanced photocatalytic activity  

作　　者：Yuhua Ma Xiadiye Aihemaiti Kezhen Qi Shiyin Wang Yanjie Shi Zhuanhu Wang Minghe Gao Fuhe Gai Yulian Qiu 

机构地区：[1]College of Chemistry and Chemical Engineering,Xinjiang Normal University,Urumqi 830054,China [2]Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials,Xinjiang Normal University,Urumqi 830054,China [3]College of Pharmacy,Dali University,Dali 671000,China

出　　处：《Journal of Materials Science & Technology》2023年第25期217-229,共13页材料科学技术（英文版）

基　　金：financially supported by the National Natu-ral Science Foundation of China(Nos.52063028,22208275 and 22268003);the Ph.D.Startup Fund of Xinjiang Normal Univer-sity(No.XJNUBS1907);the Xinjiang Normal University Outstanding Young Teachers’Research Initiation Project(No.XJNU202015);the Innovation team for monitoring of emerging contaminants and biomarkers(No.2021D14017).

摘　　要：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 BaTiO_(3)(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 1.8×10^(9) 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.

关 键 词：S-scheme heterojunction Red phosphorous BATIO3 Photocatalytic activity 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]