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author:

Huang, Wenyuan (Huang, Wenyuan.) [1] | Jing, Chuwen (Jing, Chuwen.) [2] | Zhang, Xiaodong (Zhang, Xiaodong.) [3] | Tang, Mengqi (Tang, Mengqi.) [4] | Tang, Liang (Tang, Liang.) [5] | Wu, Minghong (Wu, Minghong.) [6] (Scholars:吴明红) | Liu, Ning (Liu, Ning.) [7]

Indexed by:

SCIE

Abstract:

High electron-hole separation efficiency and wide spectrum absorption are desired for improving the photocatalytic activity. In this research, we integrate plasmonic Ag/AgCl with a typical semiconductor-like metalorganic framework MIL-88A(Fe) to form Ag/AgCl@MIL-88A(Fe) (ACMA) nanocomposites by a facile one-pot solvothermal method. The results demonstrate that ACMA nanocomposites not only broaden the visible-light absorption of MOFs, but also greatly accelerate photo-induced charge transfer rate. EDS mapping and HRTEM results suggest that Ag/AgCl is uniformly and densely dispersed on the surface of MOF, which is beneficial for charge flow and expedites the charge migration. By virtue of the structural and compositional features, these unique ACMA nanocomposites perform excellent photocatalytic activity on ibuprofen (IBP) in terms of high degradation efficiency, high mineralization and excellent cycling stability. ACMA-2 (Fe:Ag = 2:1) displays highly efficient photocatalytic activity on IBP under visible light irradiation, and the corresponding photo-degradation rate is 10.8 and 40.4 folds higher than that of MIL-88A(Fe) and Ag/AgCl, respectively. Total organic carbon (TOC) removal of IBP photodegradation reaches 91% by the catalysis of ACMA-2. Combined with the electrochemical tests, quencher experiments and analysis of related degradation products identified by ion chromatography (IC) and LC-MS-MS, oxidation by superoxide radicals (center dot O2-) as well as holes (h(+)) and electrons (e(-)) is the dominant degradation process in the photocatalytic degradation of IBP. This work provides a new perspective for the preparation of environment-stable and efficient MOF-based photocatalysts by steering charge flow.

Keyword:

Ag/AgCl Ibuprofen MIL-88A(Fe) Plasmonic effect Visible light

Community:

  • [ 1 ] [Huang, Wenyuan]Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
  • [ 2 ] [Jing, Chuwen]Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
  • [ 3 ] [Zhang, Xiaodong]Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
  • [ 4 ] [Tang, Mengqi]Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
  • [ 5 ] [Liu, Ning]Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
  • [ 6 ] [Tang, Liang]Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
  • [ 7 ] [Wu, Minghong]Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China

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Source :

CHEMICAL ENGINEERING JOURNAL

ISSN: 1385-8947

Year: 2018

Volume: 349

Page: 603-612

8 . 3 5 5

JCR@2018

1 3 . 4 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 181

SCOPUS Cited Count: 191

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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