Synthesis and Characterization of Ca1-xCoxTiO3 and its Photocatalytic Activity on Photodegradation of Methylene Blue

Prodjosantoso, Anti Kolonial; Kusumawardani, Cahyorini; Utomo, M. Pranjoto; Handoko, Chanel Tri

doi:10.14233/ajchem.2017.20461

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…One of the alternative methods of dyes treatment that has been developed at this time is photodegradation method by using photocatalyst semiconductors and ultraviolet light [6,7]. The photocatalytic process needs to be further developed because unlike conventional waste treatment which only moves pollutants from one place to another but is able to convert pollutants into simple and environmentally friendly compounds [6,8].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Indonesian Natural Zeolite-Supported PbO Photocatalyst

Utomo¹,

Athoourrohman²,

Sari³

et al. 2018

Asian J. Chem.

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Indonesian natural zeolite-supported PbO has been prepared and characterized. The zeolite-supported PbO was prepared by sol-gel method using natural zeolite and Pb(CH3COO)2•3H2O as precursors and characterized by using a series method of XRD, FTIR, SEM-EDX and UV-visible diffuse reflectance. The catalytic activity of zeolite-supported PbO for removal of methylene blue was performed in the dark condition. The crystallite of zeolite-supported PbO having size of 23.2 nm was observed, but SEM-EDX measurement indicate the presences of zeolite-supported PbO and PbO having 2 to 8 µm and 0.5 to 2 µm in size, respectively, with PbO was spreaded over the surface of the zeolite. The PbO lowers the band gap energy (Eg) of the zeolite from 3.21 to 3.01 eV, allowing the catalysts works under either visible and UV light. The catalysts absorbs methylene blue following Freundlich isotherm absorption.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Indonesian Natural Zeolite-Supported PbO Photocatalyst

Utomo¹,

Athoourrohman²,

Sari³

et al. 2018

Asian J. Chem.

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Modified Auto-Combustion Synthesis of Mesoporous TiO<sub>2</sub>-NiO Nanosheets for Selective Adsorption and Photodegradation of Alizarin Yellow Dye under Direct Sunlight and Reaction Kinetic Study

Padmavathy

Narasimhamurthy

Manjunatha

et al. 2022

AMM

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The application of a photocatalyst with effective adsorption capacity and higher photocatalytic activity under direct sunlight for the treatment of industrial effluent contaminated with dyes has received increased attention. In this work, mesoporous TiO2-NiO nanosheets were synthesized by a modified auto-combustion technique followed by thermal post-treatment at 400°C. The XRD pattern for modified auto-combusted resulting TiO2 (sc) and TiO2-NiO (sc) [5wt%NiO] nanosheets comprised of mixed-phase anatase and rutile for TiO2 and cubic for NiO. The result of SEM demonstrated that the morphology of TiO2 is a sheet and TiO2-NiO is a rod-like structure. UV-vis spectroscopy results imply that the bandgap of TiO2 and TiO2-NiO mixed phase is 3.1eV and 2.7eV. N2 sorption (BET) showed a mesoporous structure and interpret specific surface areas of 19.528m2/g and 63.215 m²/g. Adsorption of the dye on the solid catalyst is inexpensive and efficient but disposing of the adsorbed dye is challenging. Among various dye removal techniques, photocatalytic degradation under direct sunlight is significant, cost-effective, and sustainable. Photocatalytic experiments using alizarin yellow as a model pollutant showed that the degradation percentage of AY was 93.54% in 120min for 100mg of TiO2(sc) and 97% in 90min for 60mg of TiO2-NiO(sc). Degradation of AY using TiO2(sc) and TiO2-NiO(sc) follows a pseudo-first-order reaction, whereas adsorption of AY on TiO2-NiO(sc) follows the second-order kinetics, fits well in the Freundlich Isotherm model. Therefore, nanosized mesoporous TiO2-NiO(sc) nanosheets with a p-n junction are considered efficient photocatalysts under direct sunlight due to narrowing down in bandgap, larger surface, and mixed-phase.

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Synthesis and Characterization of Ca1-xCoxTiO3 and its Photocatalytic Activity on Photodegradation of Methylene Blue

Cited by 2 publications

References 8 publications

Preparation and Characterization of Indonesian Natural Zeolite-Supported PbO Photocatalyst

Preparation and Characterization of Indonesian Natural Zeolite-Supported PbO Photocatalyst

Modified Auto-Combustion Synthesis of Mesoporous TiO<sub>2</sub>-NiO Nanosheets for Selective Adsorption and Photodegradation of Alizarin Yellow Dye under Direct Sunlight and Reaction Kinetic Study

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