Enhanced Activity of TiO2/Natural Zeolite Composite for Degradation of Methyl Orange under Visible Light Irradiation&#x0D;

Rahman, Arif; Nurjayadi, Muktiningsih; Wartilah, Rika; Kusrini, Eny; Prasetyanto, Eko Adi; Degermenci, Volkan

doi:10.14716/ijtech.v9i6.2368

Cited by 27 publications

(26 citation statements)

References 17 publications

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“…Zeolite is a porous material that has been widely used as a catalyst, adsorbent, and ion exchanger (Rahman et al, 2018). Synthetic zeolite was chosen to be the adsorbent because synthetic zeolite has the physical properties that much better than those of natural zeolite.…”

Section: Introductionmentioning

confidence: 99%

“…One of the most successful methods for preparing the nano-sized metal oxide materials is the sol-gel method; hence, this method is suitable for application in the preparation process of the ZnO-Zeolite nanocomposites. The sol-gel method is used for the preparation of thin films and powder-shaped materials, where the alkoxides are hydrolyzed by alcohol to metal hydroxides (Rahman et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of ZnO-Zeolite Nanocomposite for Photocatalytic Degradation by Ultraviolet Light

Gayatri¹,

Agustina²,

Moeksin³

et al. 2021

J. Ecol. Eng.

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The increasing growth of the textile industry does not only provide benefits in the economic sector but also has the potential to damage the environment, because it generates the dye wastewater which is hard to eliminate. Procion red is one of the synthetic textile dyes that is toxic to the aquatic environment and it needs to be processed properly. The photocatalytic method of processing dye wastewater is the most effective, because it can remove the harmful pollutants in the dye wastewater. This study aimed to prepare and characterize the ZnO-Zeolite nanocomposites for photocatalytic applications tested with a 50 mg/L procion red dye sample. The nanocomposites consisted of the ZnO semiconductors and synthetic zeolite adsorbents prepared by using the sol-gel method. The dye degradation test was carried out under the irradiation conditions with ultraviolet (UV) lamp. Apart from the ZnO-Zeolite nanocomposite, testing was also carried out with the synthetic zeolite and ZnO. The results of SEM-EDX and XRD characterization proved that the nanocomposite forming components were ZnO and zeolite and could be seen from the resulting peaks. BET showed that the surface area value of the ZnO-Zeolite nanocomposite increased to 95.98 m 2 /g, the pore size of the ZnO-Zeolite nanocomposite was 4.42 nm, and the total pore volume was 0.08 cm³/g. The obtained average crystalline size of ZnO-Zeolite nanocomposite was 32.87 nm. The percentage of dye degradation using the ZnO-Zeolite nanocomposite for 120 minutes has reached 90.42%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of ZnO-Zeolite Nanocomposite for Photocatalytic Degradation by Ultraviolet Light

Gayatri¹,

Agustina²,

Moeksin³

et al. 2021

J. Ecol. Eng.

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“…Zeolite is used as a carrier molecular because its crystal structure is porous and has a large surface area, it is composed of a silica-alumina skeleton, it has a high thermal stability, and its presence is quite abundant (Wang and Peng, 2010). The pore structure of zeolite also allows it to be used as a host material (Rahman et al, 2018). Moreover, zeolite is recommended for the degradation of dye through adsorption due to its large surface area (Viswanathan, 2018).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nano-Photocatalyst ZnO-Natural Zeolite to Degrade Procion Red

Agustina¹,

Melwita²,

Bahrin³

et al. 2020

IJTech

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The development of textile factories has had a significant impact on the environment because dye wastewater is difficult to degrade. The handling of textile wastewater usually involves the adsorption method, in which pollutants only transfer to another phase. As an alternative solution, a photodegradation method was developed using photocatalyst material assisted by ultraviolet irradiation. In this photodegradation method, dye substances are broken down into components that are simpler and safer for the environment. The possibility of using sunlight as a radiation source makes this a particularly promising method for countries such as Indonesia. Procion red, one of the most commonly utilized synthetic dyes in the home textile or Batik industry, was used as a model pollutant in this study. The objectives of the present research were to synthesize and characterize a nano-photocatalyst of ZnO-natural zeolite with the capacity to degrade Procion red. This nano-photocatalyst was synthesized using the sol-gel method, by which Zn(CH3COO)2 2H2O was used as a precursor and combined with natural zeolite to increase its photocatalytic ability. The nano-photocatalyst was characterized using X-ray diffraction (XRD), scanning electron microscope/energy dispersive X-ray spectroscopy (SEM/EDX), and Brunauer-Emmett-Teller (BET). The activity of nano-photocatalyst ZnO-natural zeolite was compared to ZnO alone and natural zeolite alone in terms of its ability to degrade Procion red. An average photocatalyst crystallite diameter of 82 nm was achieved, proving that a nano-sized photocatalyst of ZnO-natural zeolite was successfully synthesized. BET characterization showed that nanophotocatalyst ZnO-natural zeolite had a specific surface area of 14.84 m 2 /g, a pore size of 32.71 nm, and a pore volume of 0.12 cm 2 /g. A peak Procion red degradation percentage of 96.23% was obtained using nano-photocatalyst ZnO-natural zeolite after 120 minutes of irradiation under sunlight applied to a Procion red concentration of 50 ppm.

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“…Therefore, many attempts have been made to enhance the photocatalytic performance, such as by modification of the ZnO structure in order to increase the surface area and light absorption (Kadam et al, 2018). Furthermore, doping the ZnO nanoparticles with noble metals (Dermenci et al, 2014), lanthanide groups (Vaiano et al, 2017), natural zeolite (Rahman et al, 2018), and Fe3O4 (Winatapura et al, 2016) have also been reported as promising candidates for enhancing the photocatalytic activity. In general, Ag nanoparticles are more attractive as dopants compared to other noble metals because of their high electrical and thermal conductivity, non-toxicity, cost-effectiveness, and high work function (Kadam et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Activity of ZnO-Ag Nanocomposites Prepared by a One-step Process using Flame Pyrolysis

Kusdianto¹,

Widiyastuti²,

Nurtono³

et al. 2019

IJTech

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The degradation of organic pollutants using photocatalysis is more effective than conventional methods, with ZnO being the most widely used of the various semiconductor materials for application in photocatalysis. Unfortunately, degradation efficiency is inhibited by the electronhole recombination. The photocatalytic activity of ZnO can be enhanced by adding noble metals, such as Ag nanoparticles. However, the fabrication of ZnO˗Ag using liquid-phase processes is complicated and often requires multiple steps. In this study, the effects of Ag content, ranging from 0 to 20 wt%, in the photocatalytic activity of ZnO˗Ag nanocomposites are investigated. The nanocomposites were fabricated by a one-step process using flame pyrolysis and with zinc acetate and AgNO3 as the precursors. The nanocomposites were collected using an electrostatic precipitator and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and nitrogen adsorption-desorption of the Brunauer-Emmett-Teller (BET) specific surface area. The XRD results confirm the existence of Ag nanoparticles in the prepared nanocomposites, whose crystallite size was not significantly influenced by the presence of the nanoparticles. The SEM indicated that the morphology of the nanocomposites produced was spherical, with some aggregates. Particle size distribution of the nanocomposites increased with higher Ag content. The photocatalytic activity of the produced nanocomposites, estimated by evaluating the degradation of the methylene blue aqueous solution under UV irradiation, showed that the highest photocatalytic performance was attained when the concentration of Ag was equal to 5 wt%.

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Enhanced Activity of TiO2/Natural Zeolite Composite for Degradation of Methyl Orange under Visible Light Irradiation

Cited by 27 publications

References 17 publications

Preparation and Characterization of ZnO-Zeolite Nanocomposite for Photocatalytic Degradation by Ultraviolet Light

Preparation and Characterization of ZnO-Zeolite Nanocomposite for Photocatalytic Degradation by Ultraviolet Light

Synthesis of Nano-Photocatalyst ZnO-Natural Zeolite to Degrade Procion Red

Photocatalytic Activity of ZnO-Ag Nanocomposites Prepared by a One-step Process using Flame Pyrolysis

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