High-Performance Room-Light-Driven β-AgVO3/mpg-C3N4 Core/Shell Photocatalyst Prepared by Mechanochemical Method  

作　　者：Hendrik Kosslick Yingyong Wang M. Farooq Ibad Xiangyun Guo Matthias Lütgens Stefan Lochbrunner Marcus Frank Nguyen Quang Liem Axel Schulz Hendrik Kosslick;Yingyong Wang;M. Farooq Ibad;Xiangyun Guo;Matthias Lütgens;Stefan Lochbrunner;Marcus Frank;Nguyen Quang Liem;Axel Schulz(Institute of Chemistry, University of Rostock, Rostock, Germany;Leibniz-Institute for Catalysis at the University of Rostock, Rostock, Germany;Institute of Coal Chemistry, State Key Laboratory of Coal Conversion, Chinese Academy of Sciences, Beijing, China;Institute of Physics, University of Rostock, Rostock, Germany;Electron Microscopic Center (EMZ), Institute of Pathology, University of Rostock, Rostock, Germany;Institute of Materials Science, Vietnam Academy of Science and Technology, Ha Noi, Viet Nam)

机构地区：[1]Institute of Chemistry, University of Rostock, Rostock, Germany [2]Leibniz-Institute for Catalysis at the University of Rostock, Rostock, Germany [3]Institute of Coal Chemistry, State Key Laboratory of Coal Conversion, Chinese Academy of Sciences, Beijing, China [4]Institute of Physics, University of Rostock, Rostock, Germany [5]Electron Microscopic Center (EMZ), Institute of Pathology, University of Rostock, Rostock, Germany [6]Institute of Materials Science, Vietnam Academy of Science and Technology, Ha Noi, Viet Nam

出　　处：《Advances in Chemical Engineering and Science》2021年第4期290-315,共26页化学工程与科学期刊（英文）

摘　　要：A new highly efficient, visible light active, silver vanadate/polymeric carbonitride “core/shell” photocatalyst was prepared mechano-chemically prepared by grinding mixtures of <i><span><span style="white-space:nowrap;">&#946;</span></span></i><span>-silver vanadate and mesoporous graphitic carbonitride. Besides the core/shell photocatalyst, </span><i><span><span style="white-space:nowrap;">&#946;</span></span></i><span>-silver vanadate/mesoporous polymeric carbonitride composites and supported mpg-C</span>_{<span>3</span>}<span>N</span>_{<span>4</span>}<span><span style="white-space:nowrap;">&#64;</span></span><i><span><span style="white-space:nowrap;">&#946;</span></span></i><span>-silver vanadates were prepared. The materials were characterized by transmission elec</span><span>tron microscopy (TEM), X-ray diffraction (XRD), nitrogen ad- and</span><span> de-sorption, diffuse reflectance UV-Vis measurement (DRS), infrared spectroscopy, Raman microscopy, and time-resolved photoluminescence spectroscopy. The photocatalytic performance of the materials was investigated in the degradation of organics using pharmaceutical ibuprofen and 4-(isobutyl phenyl) propionic acid sodium salt as model compounds under batch conditions. Reaction intermediates were studied by electrospray ionization and time-of-flight mass spectrometry (ESI-TOF-MS). Additionally, the degree of mineralization was determined by total organic carbon TOC measurements. The core/shell photocatalyst has shown superior photocatalytic activity compared to the other prepared composites or supported photocatalysts as well as the single mpg-C</span>_{<span>3</span>}<span>N</span>_{<span>4</span>}<span>. Scavenger experiments showed that valence band holes and anio</span><span>nic superoxide radicals are the main active species in the photocatalytic</span><span> process. TOC measurement confirmed the mineralization of the organic compound, which was in line with ESI-TOF-MS experiments. Time-resolved photoluminescence measureA new highly efficient, visible light active, silver vanadate/polymeric carbonitride “core/shell” photocatalyst was prepared mechano-chemically prepared by grinding mixtures of <i><span><span style="white-space:nowrap;">&#946;</span></span></i><span>-silver vanadate and mesoporous graphitic carbonitride. Besides the core/shell photocatalyst, </span><i><span><span style="white-space:nowrap;">&#946;</span></span></i><span>-silver vanadate/mesoporous polymeric carbonitride composites and supported mpg-C</span>_{<span>3</span>}<span>N</span>_{<span>4</span>}<span><span style="white-space:nowrap;">&#64;</span></span><i><span><span style="white-space:nowrap;">&#946;</span></span></i><span>-silver vanadates were prepared. The materials were characterized by transmission elec</span><span>tron microscopy (TEM), X-ray diffraction (XRD), nitrogen ad- and</span><span> de-sorption, diffuse reflectance UV-Vis measurement (DRS), infrared spectroscopy, Raman microscopy, and time-resolved photoluminescence spectroscopy. The photocatalytic performance of the materials was investigated in the degradation of organics using pharmaceutical ibuprofen and 4-(isobutyl phenyl) propionic acid sodium salt as model compounds under batch conditions. Reaction intermediates were studied by electrospray ionization and time-of-flight mass spectrometry (ESI-TOF-MS). Additionally, the degree of mineralization was determined by total organic carbon TOC measurements. The core/shell photocatalyst has shown superior photocatalytic activity compared to the other prepared composites or supported photocatalysts as well as the single mpg-C</span>_{<span>3</span>}<span>N</span>_{<span>4</span>}<span>. Scavenger experiments showed that valence band holes and anio</span><span>nic superoxide radicals are the main active species in the photocatalytic</span><span> process. TOC measurement confirmed the mineralization of the organic compound, which was in line with ESI-TOF-MS experiments. Time-resolved photoluminescence measure

关 键 词：CARBONITRIDES Photocatalysis Visible Light Water Treatment MINERALIZATION Core-Shell Catalyst Silver Vanadate 

分 类 号：O61[理学—无机化学]