0D/1D p-n heterostructured composite of bismuth ferrite perovskite clusters on sodium titanate nanotube arouse exceptional blue-light-driven photooxidation

被引：2

作者：

Li, Qiuhan ^{[1
,2
,4
]}

Zhang, Yifei ^{[3
]}

Xu, Liangliang ^{[5
]}

Chen, Haijun ^{[1
,2
]}

Zhang, Lu ^{[1
,2
]}

Khalid, Muhammad Shoaib ^{[4
]}

Li, Zhiwen ^{[4
]}

Li, Zhongjun ^{[1
,2
]}

Li, Gao ^{[3
,4
]}

机构：

[1] Zhengzhou Univ, Green Catalysis Ctr, 100 Kexue Rd, Zhengzhou, Peoples R China

[2] Zhengzhou Univ, Coll Chem, 100 Kexue Rd, Zhengzhou 450001, Peoples R China

[3] Shenyang Normal Univ, Inst Catalysis Energy & Environm, Coll Chem & Chem Engn, Shenyang 110034, Peoples R China

[4] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[5] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Daejeon, South Korea

来源：

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2025年 / 361卷

基金：

中国国家自然科学基金;

关键词：

Quantum dots; BiFeO3 perovskite clusters; Na2Ti3O7; nanotube; P-n heterojunction; Photooxidation; S-scheme; BENZYL ALCOHOL; SELECTIVE PHOTOOXIDATION; OXIDATION; BIFEO3; OXYGEN; PHOTOCATALYSIS; HETEROJUNCTION; SEPARATION;

D O I：

10.1016/j.apcatb.2024.124706

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This study describes the synthesis of a 0D/1D p-n heterostructured composite of bismuth ferrite perovskite clusters on sodium titanate nanotubes prepared using an in-situ hydrothermal method. BiFeO3/Na2Ti3O7 (BFT) nanocomposite, forming a p-n heterojunction due to the equilibrium of Fermi level, exhibits exceptional blue-light-driven photo-oxidation activity with an exceptional benzyl alcohol conversion rate of 29.64 mmol(produced) BAD center dot g(-1) h(-1). The outstanding performance originates from the promotion of photogenerated charge separation and effective inhibition of charge recombination due to internal electric field of p-n heterojunction. Density functional theory calculations combined with femtosecond transient absorption spectroscopy distinctly confirms the efficient separation and transfer of photogenerated carriers to be S-scheme charge transfer mechanism over the p-n heterojunctions. Furthermore, in-situ infrared spectroscopy combined with XPS results demonstrate the strong adsorption of benzyl alcohol and weak adsorption of benzaldehyde on BFT, which facilitates the transformation of reactant and desorption of product. This study provides a simple and effective approach to enhance photocatalytic selective oxidation reactions.

引用

页数：11