論文

査読有り
2017年10月

Rapid Removal and Mineralization of Bisphenol A by Heterosupramolecular Plasmonic Photocatalyst Consisting of Gold Nanoparticle-Loaded Titanium(IV) Oxide and Surfactant Admicelle

LANGMUIR
  • Shin-ichi Naya
  • ,
  • Junpei Yamauchi
  • ,
  • Takashi Okubo
  • ,
  • Hiroaki Tada

33
40
開始ページ
10468
終了ページ
10472
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acs.langmuir.7b02396
出版者・発行元
AMER CHEMICAL SOC

The establishment of technology for rapid and complete removal and mineralization of harmful phenolic compounds from water is of great importance for environmental conservation. Visible-light irradiation (lambda > 430 nm, light intensity integrated from 420 to 485 nm = 6.0 mW cm(-2)) of Au nanoparticle (NP)-loaded TiO2 (Au/TiO2) in dilute aqueous solutions of bisphenol A (BPA) and p-cresol (PC) causes degradation of the phenols. The addition of trimethylstearylammonium chloride (C(18)TAC) enhances the adsorption of BPA on Au/TiO2 to greatly increase the rate of reaction. Consequently, 10 mu M phenols are completely removed from the solutions within 2.5 h irradiation, and prolonging irradiation time to 24 h quantitatively oxidizes BPA to CO2. Dynamic light scattering zeta-potential measurements indicate that a C(18)TAC bilayer or admicelle is formed on the Au/TiO2 particle surface at C(18)TAC concentration >50 mu M. The action spectrum for reaction shows that this reaction is driven by the Au NP localized surface plasmon resonance excitation-induced interfacial electron transfer from Au to TiO2. We propose a possible reaction scheme on the basis of the experimental results including intermediate analysis.

Web of Science ® 被引用回数 : 2

リンク情報
DOI
https://doi.org/10.1021/acs.langmuir.7b02396
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000412966100006&DestApp=WOS_CPL