Preparation of Type I n-n Heterojunction Cd(OH)2/Bi10Cd3O20 and its Enhanced Photocatalytic Properties
Year: 2025
Type: article
Abstract: The heterojunction structure Cd(OH)2/Bi10Cd3O20 was successfully constructed through a straightforward hydrothermal method. The product was characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), high resolution transmission electron microscope (HRTEM), selected area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS), Diffuse reflectance spectrum (DRS), Raman analysis, photocurrent and electrochemical impedance spectroscopy (EIS) measurements. SEM, HRTEM and Raman analysis confirmed that the nanorod Bi10Cd3O20 was effectively stacked on the surface of the hexagonal microblock Cd(OH)2, forming the heterojunction composite. This composite demonstrated exceptional photocatalytic performance in the degradation of azo dye pollutants, with a degradation rate for Rhodamine B reaching 98% under optimal synthesis conditions. A plausible photocatalytic mechanism for the heterojunction composite, based on a type I n-n heterojunction, was also proposed. The heterostructure significantly facilitates the migration and separation of charge carriers, thereby enhancing the photoactivity and stability.
Source: Journal of nano research
DOI: 10.4028/p-7n70uc
Authors: Yan Feng, Hang Min Guan, Tong Xi Zhu, Yan Jun Zhao
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4408844244