HANIFAH, YULIZAH and Mohadi, Risfidian and Mardiyanto, Mardiyanto and Lesbani, Aldes (2022) Photocatalytic Degradation of Malachite Green by NiAl-LDH Intercalated Polyoxometalate Compound. Bulletin of Chemical Reaction Engineering & Catalysis, 17 (3). pp. 627-637. ISSN 1978-2993
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BCREC 922 Photocatalytic Degradation of Malachite Green by NiAl-LDH Intercalated Polyoxometalate Compound.pdf Download (1MB) | Preview |
Abstract
Abstract Composites based on layered double hydroxide with polyoxometalate K3-PW12O40] and K4-SiW12O40] were syn-thesized to form NiAl-[SiW12O40] and NiAl-[PW12O40]. The materials were characterized by XRD, FTIR, SEM, and UV-DRS and were then applied as a photocatalyst to degrade MG. The effects of catalyst loading, pH value, and contact times on photodegradation performance were carried out in this study. The results indicated that NiAl-LDH was successfully synthesized by showing the peak diffractions at angles 11.63°, 23.13°, and 35.16°. Both kinds of attained NiAl-[SiW12O40] and NiAl-[PW12O40] had typical structures of LDH that were proved by appear-ing diffraction at 2θ angles 10.76°, 26.59°, 30.8°, and 63.11° for NiAl-[PW12O40] and at 2θ angles 8.26°, 11.34°, 29°, and 35.1° for NiAl-[SiW12O40]. The materials used for the fifth regeneration were characterized by FTIR, which still presents characteristics of LDH structure. The photocatalyst was applied for the first time to degrade MG. The decrease of band gap on NiAl pristine than LDH composite from 4.76 eV to 3.22 eV for NiAl-[SiW12O40] and 3.78 eV for NiAl-[PW12O40] respectively, was presented by DR-UV analysis. LDH composite shows improved degra-dation photocatalytic performance in comparison with LDH pristine. It was present by the %degradation MG per-formances were 68.94% for NiAl LDH, 84.51% for NiAl-[PW12O40]), and 88.91% for NiAl-[SiW12O40]. The degrada-tion percentage indicates that the LDH-polyoxometalate composite has succeeded in increasing the ability of pho-todegradation catalytic and the regeneration ability of LDH pristine.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QD Chemistry > QD701-731 Photochemistry |
| Divisions: | 08-Faculty of Mathematics and Natural Science > 45102-Physics (S2) |
| Depositing User: | Dr.rer.nat Risfidian Mohadi |
| Date Deposited: | 25 Dec 2022 01:40 |
| Last Modified: | 25 Dec 2022 01:40 |
| URI: | http://repository.unsri.ac.id/id/eprint/84584 |
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