SYNTHESIS OF ZIRCONIUM-NAPHTALENEDICARBOXYLIC MOF (DUT-52) BY MICROWAVE HEATING AS A PHOTOCATALYST FOR REDUCTION OF Cr(VI)
Zirconium-Naphtalenedicarboxylic MOF (Zr-NDC) was synthesized by reacting zirconium tetrachloride (ZrCl4) and 2,6-naphtalenedicarboxilic acid by microwave heating at 115 oC and power of 800 watt for 20 minutes. This synthetic procedure is more efficient than solvothermal method that temperature abou...
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id-itb.:241392017-09-27T15:39:48ZSYNTHESIS OF ZIRCONIUM-NAPHTALENEDICARBOXYLIC MOF (DUT-52) BY MICROWAVE HEATING AS A PHOTOCATALYST FOR REDUCTION OF Cr(VI) FEBRIANA KESUMA (NIM : 20513011), RUTH Indonesia Theses INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/24139 Zirconium-Naphtalenedicarboxylic MOF (Zr-NDC) was synthesized by reacting zirconium tetrachloride (ZrCl4) and 2,6-naphtalenedicarboxilic acid by microwave heating at 115 oC and power of 800 watt for 20 minutes. This synthetic procedure is more efficient than solvothermal method that temperature about 100-150 oC is needed for 24 h. Powder X-ray diffraction (PXRD) was carried out to confirm the formation of Zr-NDC MOF with characteristic peaks at 2θ = 6.47 and 7.45. The result showed that MOF has crystallinity up to 77%. Fourier transform infrared (FTIR) spectra of MOF Zr-NDC indicated that the carboxylic groups of NDC ligand has bounded to Zr4+ ion. It can be confirmed by wavenumber shift of carbonyl vibrations of H2NDC (1687 cm-1) to a smaller wavenumber. UV-vis diffuse reflectance spectra were obtained by spectrophotometer UV-vis revealed absorption peak at λex 287 nm which is corresponds to a band gap energy 4.32 eV. Excitation at 275 and 300 nm gave the emission wavelength in the purple region (433 nm) so Zr-NDC MOF has luminescent performance in the visible region. The synthesized ZrNDC MOF was used as a photocatalyst to reduce Cr(VI) that is carcinogenic and toxic at level of ≥0.05 ppm. The photocatalytic results showed the reduction ratio of Cr(VI) up to 90% after 3 h and there is no significant effect if it is observed in the absence of light or in the absence of catalyst. It demonstrates that Zr-NDC MOF is a photocatalyst material. text |
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Zirconium-Naphtalenedicarboxylic MOF (Zr-NDC) was synthesized by reacting zirconium tetrachloride (ZrCl4) and 2,6-naphtalenedicarboxilic acid by microwave heating at 115 oC and power of 800 watt for 20 minutes. This synthetic procedure is more efficient than solvothermal method that temperature about 100-150 oC is needed for 24 h. Powder X-ray diffraction (PXRD) was carried out to confirm the formation of Zr-NDC MOF with characteristic peaks at 2θ = 6.47 and 7.45. The result showed that MOF has crystallinity up to 77%. Fourier transform infrared (FTIR) spectra of MOF Zr-NDC indicated that the carboxylic groups of NDC ligand has bounded to Zr4+ ion. It can be confirmed by wavenumber shift of carbonyl vibrations of H2NDC (1687 cm-1) to a smaller wavenumber. UV-vis diffuse reflectance spectra were obtained by spectrophotometer UV-vis revealed absorption peak at λex 287 nm which is corresponds to a band gap energy 4.32 eV. Excitation at 275 and 300 nm gave the emission wavelength in the purple region (433 nm) so Zr-NDC MOF has luminescent performance in the visible region. The synthesized ZrNDC MOF was used as a photocatalyst to reduce Cr(VI) that is carcinogenic and toxic at level of ≥0.05 ppm. The photocatalytic results showed the reduction ratio of Cr(VI) up to 90% after 3 h and there is no significant effect if it is observed in the absence of light or in the absence of catalyst. It demonstrates that Zr-NDC MOF is a photocatalyst material. |
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FEBRIANA KESUMA (NIM : 20513011), RUTH |
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FEBRIANA KESUMA (NIM : 20513011), RUTH SYNTHESIS OF ZIRCONIUM-NAPHTALENEDICARBOXYLIC MOF (DUT-52) BY MICROWAVE HEATING AS A PHOTOCATALYST FOR REDUCTION OF Cr(VI) |
author_facet |
FEBRIANA KESUMA (NIM : 20513011), RUTH |
author_sort |
FEBRIANA KESUMA (NIM : 20513011), RUTH |
title |
SYNTHESIS OF ZIRCONIUM-NAPHTALENEDICARBOXYLIC MOF (DUT-52) BY MICROWAVE HEATING AS A PHOTOCATALYST FOR REDUCTION OF Cr(VI) |
title_short |
SYNTHESIS OF ZIRCONIUM-NAPHTALENEDICARBOXYLIC MOF (DUT-52) BY MICROWAVE HEATING AS A PHOTOCATALYST FOR REDUCTION OF Cr(VI) |
title_full |
SYNTHESIS OF ZIRCONIUM-NAPHTALENEDICARBOXYLIC MOF (DUT-52) BY MICROWAVE HEATING AS A PHOTOCATALYST FOR REDUCTION OF Cr(VI) |
title_fullStr |
SYNTHESIS OF ZIRCONIUM-NAPHTALENEDICARBOXYLIC MOF (DUT-52) BY MICROWAVE HEATING AS A PHOTOCATALYST FOR REDUCTION OF Cr(VI) |
title_full_unstemmed |
SYNTHESIS OF ZIRCONIUM-NAPHTALENEDICARBOXYLIC MOF (DUT-52) BY MICROWAVE HEATING AS A PHOTOCATALYST FOR REDUCTION OF Cr(VI) |
title_sort |
synthesis of zirconium-naphtalenedicarboxylic mof (dut-52) by microwave heating as a photocatalyst for reduction of cr(vi) |
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