Plasmon Induced Near‐Infrared Active Photocatalysts: A Review. Issue 23 (12th July 2022)

• Record Type: Journal Article
• Authors: Ghosh, Utpal; Pal, Anjali; Pal, Tarasankar
• Is Part Of: Advanced materials interfaces. Volume 9:Issue 23(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-07-12
• Subjects: hot electrons -- localized surface plasmon resonance modulation -- near‐infrared light -- photocatalysis -- plasmonic materials; Materials science -- Periodicals; 620.11
• DOI: 10.1002/admi.202200465
• Languages: English
• ISSNs: 2196-7350

Abstract

Abstract: In the recent past, near‐infrared (NIR) active photocatalysts have received tremendous research attention to harvest solar NIR energy as the solar spectrum carries abundant NIR light. Again, plasmonic materials with their intense surface plasmon resonance (SPR) activity in the visible and NIR range can be a suitable candidate for NIR active photocatalysis. However, the ultrafast energy relaxation of the plasmon‐generated hot electrons restricts their application in photocatalysis. In this review, the recent progress in the plasmon‐induced NIR active photocatalysis has been summarized. Particular emphasis has been given to divulging the mechanism to NIR modulation of localized surface plasmon resonance (LSPR), LSPR intensification, LSPR induction mechanism in non‐noble metals, and suitable technologies to separate the photogenerated hot electrons efficiently and their exploration in photocatalytic reactions. The drawbacks, possible solutions, and potential of non‐noble metal plasmonic photocatalysis have been discussed in detail. Finally, the review ends with concluding remarks and possible prospects of plasmonic photocatalysts. It is believed that this review will inspire researchers to rationally design broad‐spectrum (UV–vis–NIR) active photocatalysts to harvest solar light efficiently. Abstract : Utilization of abundant near‐infrared (NIR) light is theoretically not feasible in solar photocatalysis. The intense surface plasmon resonance activity of plasmonic materials in the NIR range makes them suitable for NIR active photocatalysis. But, the ultrafast energy relaxation of the plasmon‐generated hot electrons restricts their application in photocatalysis. Hence, the potent methodologies for capturing hot electrons need to be reviewed.