Work

Enhancement of light absorption and charge separation through construction of Bi/BiOBr-Bi4O5I2 heterojunction for efficient degradation of bisphenol A

Year: 2025

Type: article

Abstract: How to realize the efficient utilization of the solar energy and the separation capacity of photo-generated charges is an instant problem in the field of photocatalytic degradation utilizing bismuth oxyhalide. Here, Bi/BiOBr-Bi 4 O 5 I 2 (BOB-BI) heterojunctions have been successfully designed and constructed. The optimized 1BOB-1BI heterojunction achieves a 100 % degradation rate of BPA under simulated solar light illumination (25 min). This excellent photocatalytic ability is ascribable to the synergistic effect of Bi particles and the formation of heterojunction. The significantly improved light absorption of the photocatalyst was benefited by the localized surface plasmon resonance (LSPR) effect of Bi particles. The construction of the heterojunction effectively reduces the interfacial transfer resistance, enhancing the separation capacity of photo-generated charges. This research provides a deep insight to the construction of effective bismuth-based heterojunction photocatalysts.

Source: Materials Science in Semiconductor Processing

DOI: 10.1016/j.mssp.2025.109543

Authors: Shuang Fu, Jinyuan Zhang, Junhao Ma, Qincan Ma, Xianzhong Lin, Yueli Zhang

Institutions: Sun Yat-sen University, State Key Laboratory of Optoelectronic Materials and Technology

Language: English

Topic: Advanced Photocatalysis Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $3,540