FeOOH Quantum Dot-Coupled Z-Scheme BiVO₄/g-C₃N₄ Heterojunction for Enhancing Photo-Fenton Reactions

Rui Liu; Ru Li; Lei Yang; Rong-Xu Wang; Han-Yang Chen; Nan Wang; Zhi Li; You-Qiang Chen; Seeram Ramakrishna; Yun-Ze Long

doi:10.1021/acsanm.3c03138

journal article·2023-09-22

FeOOH Quantum Dot-Coupled Z-Scheme BiVO₄/g-C₃N₄ Heterojunction for Enhancing Photo-Fenton Reactions

Rui Liu, Ru Li, Lei Yang, Rong-Xu Wang, Han-Yang Chen, Nan Wang, Zhi Li, You-Qiang Chen, Seeram Ramakrishna, Yun-Ze Long

ACS Applied Nano Materials· Volume 6· Issue 18

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Source abstract

Abstract

Herein, FeOOH quantum dots and a Z-scheme BiVO 4 /g-C 3 N 4 catalyst were coupled to obtain a Z-scheme heterojunction for photo-Fenton reactions to facilitate the transport of electrons and the generation of radicals. The obtained materials exhibited better visible light-driven photo-Fenton degradation of Rhodamine B, which is 22.06 times as high as pure BiVO 4, 18.65 times as high as pure g-C 3 N 4, and 3.44 times as high as BiVO 4 /g-C 3 N 4, showing great potential in photo-Fenton degradation of pollutants. Moreover, the performance tests, radical capture experiments, and time-resolved fluorescence spectroscopy revealed that electron migration exists between the BiVO 4 /g-C 3 N 4 and FeOOH-QDs. This composite system accelerates the cycling of Fe 3+ /Fe 2+ during the photo-Fenton process, thus continuously generating reactive species (hydroxyl radicals (−OH) and superoxide radicals (−O 2 – )), leading to the rapid degradation of organic pollutants.

Source: openalex_inverted_index · Quality: baseline

Research context

Composites Catalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Perovskite Materials and Applications · Gas Sensing Nanomaterials and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Collaborative Innovation Center for Nanomaterials & Devices, College of Physics, Qingdao University, Qingdao 266071, China

Instrumental Analysis Center of Qingdao University, Qingdao 266071, China

Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China

Center for Nanofibers & Nanotechnology, Faculty of Engineering, National University of Singapore, Singapore 119007, Singapore

State Key Laboratory of Bio-Fibers & Eco-Textiles (Qingdao University), Qingdao 266071, China

Funding

State Key Laboratory of Bio-Fibers and Eco-Textiles · National Natural Science Foundation of China · Natural Science Foundation of Shandong Province

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