Synthesis of <i>α</i>-MnO<sub>2</sub> Nanomaterial from a Precursor <i>γ</i>-MnO<sub>2</sub>: Characterization and Comparative Adsorption of Pb(II) and Fe(III)

<div>XRD image of MnO<sub>2</sub> at different temperatures: gamma-MnO<sub>2</sub> (a); <svg height="8.02022pt" id="M13" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -7.81382 4.54925 8.02022" width="4.54925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="341" vert-adv-y="341"></glyph.data></g></svg> = 400°C (b); <svg height="8.02022pt" id="M14" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -7.81382 4.54925 8.02022" width="4.54925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="341" vert-adv-y="341"></glyph.data></g></svg> = 600°C (c); and <svg height="8.02022pt" id="M15" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -7.81382 4.54925 8.02022" width="4.54925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="341" vert-adv-y="341"></glyph.data></g></svg> = 800°C (d).</div>

Journal of Chemistry

fig3

Figure 3

Figure 3: Synthesis of <i>α</i>-MnO<sub>2</sub> Nanomaterial from a Precursor <i>γ</i>-MnO<sub>2</sub>: Characterization and Comparative Adsorption of Pb(II) and Fe(III) 

Journal of Chemistry

Synthesis of α-MnO2 Nanomaterial from a Precursor γ-MnO2: Characterization and Comparative Adsorption of Pb(II) and Fe(III)

Figure 3

Synthesis of α-MnO₂ Nanomaterial from a Precursor γ-MnO₂: Characterization and Comparative Adsorption of Pb(II) and Fe(III)