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Ag‐Enhanced TiO 2– x /C Composites with Metal‐Organic Frameworks as Precursors for Photodegradation of Methyl Blue
Author(s) -
Fan Dongmei,
Xu Qing
Publication year - 2019
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201800426
Subject(s) - photodegradation , photocatalysis , materials science , x ray photoelectron spectroscopy , metal organic framework , visible spectrum , metal , adsorption , methyl orange , doping , photochemistry , chemical engineering , nuclear chemistry , catalysis , chemistry , metallurgy , organic chemistry , optoelectronics , engineering
A series of Ag‐enhanced TiO 2– x /C composites (Ag/TiO 2– x /C composites) with metal‐organic frameworks (MOFs) as precursors were prepared, and their photocatalytic activities were evaluated by the UV‐light driven photodegradation behaviors of methyl blue (MB). The as‐obtained samples were characterized by several techniques such as SEM, XRD, N 2 ‐adsorption, XPS, UV/Vis spectrophotometry and UV/Vis diffuse‐reflectance spectra. The best photocatalytic performance was achieved in Ag/TiO 2– x /C composite pyrolyzed at 1000 °C (ATC‐P10) due to rapid capture of electrons caused by silver doping, higher density of TiO 2– x lattice oxygen vacancies for better trapping of electrons, and high surface area due to reduction and evaporation of metallic Zn. No obvious deactivation was observed after 10 cycles of UV‐light degradation of MB under the same experimental conditions. This report reveals a new approach to prepare stable and highly efficient UV‐light‐driven photocatalysts for organic pollutants in water.