A Ternary Pt/Au/TiO2‐Decorated Plasmonic Wood Carbon for High‐Efficiency Interfacial Solar Steam Generation and Photodegradation of Tetracycline. Issue 2 (14th January 2019)

• Record Type: Journal Article
• Authors: Wang, Minmin; Wang, Ping; Zhang, Jie; Li, Chuanping; Jin, Yongdong
• Is Part Of: ChemSusChem. Volume 12:Issue 2(2019)
• Page Start: 467
• Page End: 472
• Publication Date: 2019-01-14
• Subjects: plasmonic photocatalysis -- solar evaporation -- water treatment -- wood carbon; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201802485
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: A ternary Pt/Au/TiO2 nanoparticle (NP) decorated plasmonic wood carbon has been successfully fabricated by a simple two‐step calcination method. The as‐prepared Pt/Au/TiO2 NP‐decorated wood carbon showed an interfacial solar steam generation efficiency up to 90.4 %. Furthermore, the floating system exhibits an excellent photodegradation of tetracycline (TC; 40 mg L −1 ). Up to 94 % degradation was achieved after 80 min of continuous light irradiation ( λ >420 nm) with the assistance of solar steam process. The photocatalysis is promoted by the introduction of Pt/Au nanocomponents, which suppress the recombination of electron–hole pairs generated on TiO2 and facilitate electron transfer. High‐performance liquid chromatography mass spectrometry was employed to identify the reaction products of the photocatalytic system and a mechanistic insight was also provided. The as‐prepared three‐dimensional plasmonic wood carbon has a high photocatalytic performance. Such wood carbon‐based system is recyclable and scalable for practical and versatile solar‐driven clean water generation. Abstract : Killing two birds with one wooden block : A ternary Pt/Au/TiO2 decorated plasmonic wood‐carbon‐based floating device was explored for photodegradation of tetracycline (TC). The effective solar steam evaporation capability benefits the contact and mass transfer of contaminants to the catalysts. Further, plasmonic effect of Pt/Au nanoparticles promotes charge separation over TiO2 . A high photodegradation rate of TC was achieved under visible‐light irradiation.