Facile and One Pot Synthesis of Gold Nanoparticles Using Tetraphenylborate and Polyvinylpyrrolidone for Selective Colorimetric Detection of Mercury Ions in Aqueous Medium

<table>UV-vis spectra of AuNPs synthesized using various stabilizers: black line: <svg height="10.9125" id="M19" style="vertical-align:-0.17554pt" version="1.1" viewbox="0 0 34.325001 10.9125" width="34.325001" xmlns="http://www.w3.org/2000/svg">
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<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">P</tspan>
<tspan style="font-size: 12.50px; " x="6.9641709" y="0">S</tspan>
<tspan style="font-size: 12.50px; " x="13.915839" y="0">S</tspan>
</text>
<text transform="matrix(1,0,0,-1,-51.08,68.67)">
<tspan style="font-size: 8.75px; " x="0" y="0">−</tspan>
</text>
</g>
</g>
</svg>, blue line: Nafion, red line: <svg height="10.9125" id="M20" style="vertical-align:-0.17554pt" version="1.1" viewbox="0 0 36.900002 10.9125" width="36.900002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.9125)">
<g transform="translate(72,-63.27)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">S</tspan>
<tspan style="font-size: 12.50px; " x="6.9516678" y="0">D</tspan>
<tspan style="font-size: 12.50px; " x="15.978834" y="0">S</tspan>
</text>
<text transform="matrix(1,0,0,-1,-49.02,68.67)">
<tspan style="font-size: 8.75px; " x="0" y="0">−</tspan>
</text>
</g>
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</svg> and light green line: PVP; <i>Inset</i>. UV-vis spectra of various stabilized AuNPs such as black line: <svg height="10.9125" id="M21" style="vertical-align:-0.17554pt" version="1.1" viewbox="0 0 34.325001 10.9125" width="34.325001" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.9125)">
<g transform="translate(72,-63.27)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">P</tspan>
<tspan style="font-size: 12.50px; " x="6.9641709" y="0">S</tspan>
<tspan style="font-size: 12.50px; " x="13.915839" y="0">S</tspan>
</text>
<text transform="matrix(1,0,0,-1,-51.08,68.67)">
<tspan style="font-size: 8.75px; " x="0" y="0">−</tspan>
</text>
</g>
</g>
</svg>, blue line: Nafion, red line: <svg height="10.9125" id="M22" style="vertical-align:-0.17554pt" version="1.1" viewbox="0 0 36.900002 10.9125" width="36.900002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.9125)">
<g transform="translate(72,-63.27)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">S</tspan>
<tspan style="font-size: 12.50px; " x="6.9516678" y="0">D</tspan>
<tspan style="font-size: 12.50px; " x="15.978834" y="0">S</tspan>
</text>
<text transform="matrix(1,0,0,-1,-49.02,68.67)">
<tspan style="font-size: 8.75px; " x="0" y="0">−</tspan>
</text>
</g>
</g>
</svg>, and light green line: PVP by addition of 3 M NaCl.</table>

Journal of Analytical Methods in Chemistry

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Figure 3

Figure 3: Facile and One Pot Synthesis of Gold Nanoparticles Using Tetraphenylborate and Polyvinylpyrrolidone for Selective Colorimetric Detection of Mercury Ions in Aqueous Medium 

Figure 3 | Facile and One Pot Synthesis of Gold Nanoparticles Using Tetraphenylborate and Polyvinylpyrrolidone for Selective Colorimetric Detection of Mercury Ions in Aqueous Medium 