Synthesis of Ag3PO4 microstructures with morphology-dependent optical and photocatalytic behaviors

The photodegradation activity and stability of silver orthophosphate (Ag 3 PO 4 ) photocatalysts have been greatly attributed to the morphology and exposed crystal facets. In this study, visible light-responsive Ag 3 PO 4 photocatalysts with fern-like, multipod-like and tetrapod-like morphologies we...

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Veröffentlicht in:Applied physics. A, Materials science & processing Materials science & processing, 2020, Vol.126 (7), Article 571
Hauptverfasser: Batvandi, Mohammadreza, Haghighatzadeh, Azadeh, Mazinani, Babak
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Mazinani, Babak
description The photodegradation activity and stability of silver orthophosphate (Ag 3 PO 4 ) photocatalysts have been greatly attributed to the morphology and exposed crystal facets. In this study, visible light-responsive Ag 3 PO 4 photocatalysts with fern-like, multipod-like and tetrapod-like morphologies were successfully synthesized using a facile soft-chemical technique. The morphology-controlled synthesis was conducted by changing tetrahydrofuran/water volumetric ratios in solutions containing orthophosphoric acid and silver nitrate precursors. The morphology effect on the physicochemical properties was systematically investigated using analytical methods including FESEM, EDS, XRD, FT-IR, Raman, UV–Vis DRS and PL. Ag 3 PO 4 microstructures were examined for their photocatalytic capabilities in the degradation of methylene blue (MB) under visible light irradiation. The assessment of the photocatalytic activity was performed through optimizing operational factors including irradiation time, pH, initial MB concentration and photocatalyst dosage. Fern-like Ag 3 PO 4 microstructures exhibited the highest photodegradation efficiency compared to other morphologies in which the degradation order followed a trend as fern-like Ag 3 PO 4 (85.91) > multipod-like Ag 3 PO 4 (74.72) > tetrapod-like Ag 3 PO 4 (62.92). The morphology-dependent photocatalytic performances of Ag 3 PO 4 microstructures were perfectly in agreement with the recombination rate of photoexcited electron–hole pairs and visible light adsorption capacity. Photodegradation process kinetics was explored through the Langmuir–Hinshelwood model, while the adsorption equilibrium was surveyed using Langmuir and Freundlich isotherms.
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In this study, visible light-responsive Ag 3 PO 4 photocatalysts with fern-like, multipod-like and tetrapod-like morphologies were successfully synthesized using a facile soft-chemical technique. The morphology-controlled synthesis was conducted by changing tetrahydrofuran/water volumetric ratios in solutions containing orthophosphoric acid and silver nitrate precursors. The morphology effect on the physicochemical properties was systematically investigated using analytical methods including FESEM, EDS, XRD, FT-IR, Raman, UV–Vis DRS and PL. Ag 3 PO 4 microstructures were examined for their photocatalytic capabilities in the degradation of methylene blue (MB) under visible light irradiation. The assessment of the photocatalytic activity was performed through optimizing operational factors including irradiation time, pH, initial MB concentration and photocatalyst dosage. Fern-like Ag 3 PO 4 microstructures exhibited the highest photodegradation efficiency compared to other morphologies in which the degradation order followed a trend as fern-like Ag 3 PO 4 (85.91) &gt; multipod-like Ag 3 PO 4 (74.72) &gt; tetrapod-like Ag 3 PO 4 (62.92). The morphology-dependent photocatalytic performances of Ag 3 PO 4 microstructures were perfectly in agreement with the recombination rate of photoexcited electron–hole pairs and visible light adsorption capacity. 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A, Materials science &amp; processing</title><addtitle>Appl. Phys. A</addtitle><description>The photodegradation activity and stability of silver orthophosphate (Ag 3 PO 4 ) photocatalysts have been greatly attributed to the morphology and exposed crystal facets. In this study, visible light-responsive Ag 3 PO 4 photocatalysts with fern-like, multipod-like and tetrapod-like morphologies were successfully synthesized using a facile soft-chemical technique. The morphology-controlled synthesis was conducted by changing tetrahydrofuran/water volumetric ratios in solutions containing orthophosphoric acid and silver nitrate precursors. The morphology effect on the physicochemical properties was systematically investigated using analytical methods including FESEM, EDS, XRD, FT-IR, Raman, UV–Vis DRS and PL. Ag 3 PO 4 microstructures were examined for their photocatalytic capabilities in the degradation of methylene blue (MB) under visible light irradiation. The assessment of the photocatalytic activity was performed through optimizing operational factors including irradiation time, pH, initial MB concentration and photocatalyst dosage. Fern-like Ag 3 PO 4 microstructures exhibited the highest photodegradation efficiency compared to other morphologies in which the degradation order followed a trend as fern-like Ag 3 PO 4 (85.91) &gt; multipod-like Ag 3 PO 4 (74.72) &gt; tetrapod-like Ag 3 PO 4 (62.92). The morphology-dependent photocatalytic performances of Ag 3 PO 4 microstructures were perfectly in agreement with the recombination rate of photoexcited electron–hole pairs and visible light adsorption capacity. 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A, Materials science &amp; processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Batvandi, Mohammadreza</au><au>Haghighatzadeh, Azadeh</au><au>Mazinani, Babak</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Synthesis of Ag3PO4 microstructures with morphology-dependent optical and photocatalytic behaviors</atitle><jtitle>Applied physics. A, Materials science &amp; processing</jtitle><stitle>Appl. Phys. A</stitle><date>2020</date><risdate>2020</risdate><volume>126</volume><issue>7</issue><artnum>571</artnum><issn>0947-8396</issn><eissn>1432-0630</eissn><abstract>The photodegradation activity and stability of silver orthophosphate (Ag 3 PO 4 ) photocatalysts have been greatly attributed to the morphology and exposed crystal facets. In this study, visible light-responsive Ag 3 PO 4 photocatalysts with fern-like, multipod-like and tetrapod-like morphologies were successfully synthesized using a facile soft-chemical technique. The morphology-controlled synthesis was conducted by changing tetrahydrofuran/water volumetric ratios in solutions containing orthophosphoric acid and silver nitrate precursors. The morphology effect on the physicochemical properties was systematically investigated using analytical methods including FESEM, EDS, XRD, FT-IR, Raman, UV–Vis DRS and PL. Ag 3 PO 4 microstructures were examined for their photocatalytic capabilities in the degradation of methylene blue (MB) under visible light irradiation. The assessment of the photocatalytic activity was performed through optimizing operational factors including irradiation time, pH, initial MB concentration and photocatalyst dosage. Fern-like Ag 3 PO 4 microstructures exhibited the highest photodegradation efficiency compared to other morphologies in which the degradation order followed a trend as fern-like Ag 3 PO 4 (85.91) &gt; multipod-like Ag 3 PO 4 (74.72) &gt; tetrapod-like Ag 3 PO 4 (62.92). The morphology-dependent photocatalytic performances of Ag 3 PO 4 microstructures were perfectly in agreement with the recombination rate of photoexcited electron–hole pairs and visible light adsorption capacity. Photodegradation process kinetics was explored through the Langmuir–Hinshelwood model, while the adsorption equilibrium was surveyed using Langmuir and Freundlich isotherms.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s00339-020-03761-6</doi></addata></record>
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subjects Adsorption
Applied physics
Catalytic activity
Characterization and Evaluation of Materials
Chemical synthesis
Condensed Matter Physics
Light irradiation
Machines
Manufacturing
Materials science
Methylene blue
Morphology
Nanotechnology
Optical and Electronic Materials
Phosphates
Photocatalysis
Photocatalysts
Photodegradation
Physics
Physics and Astronomy
Processes
Silver compounds
Silver nitrate
Surfaces and Interfaces
Tetrahydrofuran
Thin Films
title Synthesis of Ag3PO4 microstructures with morphology-dependent optical and photocatalytic behaviors
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