Work

Photocatalytic Papers Comprising Au@SnO2 Nanocrystals Immobilized on Cellulose Nanofibers for Sustainable Dye Degradation

Year: 2024

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide This work presents the synthesis, characterization, and photocatalytic performance of a sophisticated photocatalytic paper comprising Au@SnO 2 core@shell nanocrystals immobilized on cellulose nanofibers (CNF). The Au@SnO 2 /CNF nanocrystal immobilized paper (NIP) is employed as photocatalysts for degradation of rhodamine B (RhB) under simulated sunlight irradiation. Results reveal that the Au@SnO 2 /CNF NIP exhibits a notable photocatalytic activity driven by efficient charge separation at the interface of Au and SnO 2 . Mechanistic insights into the degradation process indicate that photoexcited electrons in the Au core reduce dissolved oxygen to form superoxide radicals, while photogenerated holes in the SnO 2 valence band oxidize water to generate hydroxyl radicals. These reactive oxygen species, along with the separated holes themselves, contribute to RhB degradation. Importantly, the Au@SnO 2 /CNF NIP demonstrates remarkable recyclability toward RhB degradation, retaining 88% of its initial activity after 18 degradation cycles, highlighting its potential for sustainable environmental remediation applications.

Source: ACS Materials Au

DOI: 10.1021/acsmaterialsau.4c00130

Authors: Yu-Chen Wei, Huai-En Chang, Pulikkutty Subramaniyan, Shan-Chu Yu, Yung-Jung Hsu, Tzu-En Lin

Institutions: National Yang Ming Chiao Tung University, National Taiwan University, Institute of Science Tokyo

Language: English

Topic: Advanced Photocatalysis Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Responsible consumption and production, Clean water and sanitation

Open Access status: gold

Estimated APC paid: $3,500